Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date 63 6/27/19 67 6/5/19 74 7/2/19 74 7/1/19 65 5/31/19 61 6/27/19 68 6/27/19 67 7/19/19 67 7/10/19 75 7/10/19 63 7/15/19 65 7/10/19 71 7/10/19 74 7/10/19 64 7/28/19 61 7/9/19 60 6/4/19 67 7/28/19 67 7/26/19 73 7/2/19 62 7/1/19 64 7/9/19 69 5/31/19 73 6/27/19 63 6/27/19 61 9/19/19 59 4/22/19 66 5/31/19 62 6/12/19 72 7/5/19 62 7/10/19 64 9/20/19 66 7/9/19 68 7/15/19 60 9/20/19 60 7/10/19 57 5/31/19 65 7/9/19 60 7/18/19 71 7/28/19 61 6/28/19 63 6/7/19 66 9/20/19 64 6/28/19 62 7/10/19 69 5/31/19 61 8/3/19 63 7/13/19 65 7/5/19 64 7/27/19 60 7/27/19 68 7/19/18 62 5/15/19 65 7/13/19 63 6/19/19 67 7/4/19 62 6/26/19 65 8/5/19 63 7/26/19 65 6/27/19 62 6/29/19 63 7/28/19 63 8/3/19 65 7/9/19 61 6/27/19 62 5/15/19 63 8/12/19 65 9/11/19 60 5/31/19 62 6/5/19 61 8/20/19 63 6/29/19 60 6/1/19 62 6/28/19 61 9/10/19 62 7/15/19 62 7/25/19 61 9/21/19 62 9/20/19 61 5/5/19 60 6/12/19 61 7/27/19 60 6/7/19 60 6/26/19 61 8/12/19 60 6/29/19 61 9/10/19 60 7/2/19 60 6/11/19 60 7/4/19 60 6/28/19 60 9/20/19 60 8/3/19 Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date 59 3/9/19 70 5/31/19 65 6/5/19 57 6/27/19 71 6/27/19 80 7/10/19 71 7/10/19 77 6/27/19 62 6/27/19 73 7/27/19 59 4/25/19 66 7/19/19 64 6/27/19 57 7/10/19 62 5/31/19 69 6/27/19 64 7/26/19 72 7/15/19 62 7/10/19 72 7/10/19 58 3/12/19 66 7/28/19 62 7/9/19 57 7/28/19 62 6/4/19 68 7/28/19 63 6/19/19 67 6/19/19 60 6/4/19 72 8/12/19 58 4/22/19 65 6/27/19 61 5/31/19 55 6/4/19 62 7/9/19 68 8/5/19 63 7/1/19 66 7/1/19 60 6/12/19 70 7/1/19 65 7/9/19 61 7/2/19 60 7/10/19 67 7/19/19 63 7/5/19 66 7/26/19 60 7/27/19 70 7/26/19 62 7/4/19 60 6/28/19 66 8/3/19 63 8/16/19 65 7/10/19 68 6/27/19 62 7/10/19 60 7/10/19 65 7/4/19 62 7/27/19 65 9/20/19 66 7/5/19 60 6/7/19 60 9/20/19 64 5/31/19 62 8/12/19 64 6/6/19 66 9/21/19 60 6/28/19 64 7/27/19 61 8/5/19 64 6/28/19 65 7/18/19 64 9/20/19 60 9/21/19 63 7/9/19 64 6/19/19 63 7/9/19 62 6/18/19 64 8/16/19 63 7/15/19 62 8/20/19 63 6/28/19 62 7/26/19 61 6/12/19 60 7/28/19 61 4/22/19 60 7/27/19 60 7/29/19 60 6/11/19 59 6/4/19 59 6/14/19 57 4/25/19 57 6/7/19 57 7/2/19 56 5/5/19 55 3/12/19 56 7/5/19 Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date 60 7/1/19 59 6/27/19 67 7/26/19 63 6/27/19 70 7/1/19 64 6/27/19 62 5/31/19 63 6/27/19 66 7/9/19 58 6/27/19 58 6/4/19 61 3/12/19 62 6/19/19 68 6/27/19 62 7/9/19 62 6/27/19 63 7/10/19 60 6/12/19 55 5/15/19 57 4/21/19 60 6/27/19 62 7/9/19 67 7/10/19 62 7/15/19 62 9/20/19 60 6/4/19 59 6/27/19 55 7/10/19 57 4/22/19 59 7/25/19 59 7/10/19 62 7/15/19 60 6/19/19 61 6/4/19 59 6/12/19 58 6/29/19 60 4/21/19 60 4/22/19 60 4/25/19 7/10/19 Southeast NA Southeast NA Southeast NA Southeast NA Muskegon Co. NA Southeast NA 77 ppb 261130001 261390005 260770008 260650012 70 ppb Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Max Allowable Hoxyville Unionville Ann Arbor Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Rose Lake Scottville Seney Sault Ste Marie Tecumseh Warren Ypsilanti Max Allowable Max Allowable CASTNET SITE CASTNET SITE CASTNET SITE Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable 260370001 261050007 261530001 260330901 260910007 260991003 261610008 Southeast NA Southeast NA 82 ppb 58 ppb 81 ppb 84 ppb 71 ppb Allen Park 261630001 Max Allowable 66 ppb 81 ppb 69 ppb 79 ppb 80 ppb 93 ppb 107 ppb 75 ppb 76 ppb 74 ppb 84 ppb 74 ppb 73 ppb Max Allowable 260810020 Grand Rapids Max Allowable 260630007 Southeast NA Max. allowable values calculated using 70 ppb as the primary NAAQS 76 ppb 260810022 Evans Max Allowable Max Allowable Harbor Beach Max Allowable 260490021 Flint Max Allowable 260190003 Frankfort Cassopolis Max Allowable 260210014 Coloma East Seven Mile 7/1/19 79 ppb 79 ppb 65 ppb 70 ppb 62 ppb 260050003 Holland Max Allowable Max Allowable 261250001 260492001 261470005 Port Huron Max Allowable 261010922 261210039 260990009 Summary of the Highest 8-Hour Ozone Concentrations for 2019 for All Sites in Michigan The four highest values in ppb are listed. All values at and above 60 ppb are included to illustrate frequency of occurrence. Max. Allowable is the maximum 4th highest value that can occur in 2019 without violation of the standard. Values above Max. Allowable are bold. 7/27/19 Data updated through 3/27/20 - Top 10 2019 concentrations validated Non-attainment Area (NA) Allegan Co NA 6/11/19 78 ppb 77 ppb 78 ppb 67 ppb Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green. Berrien Co. NA Max Allowable Max Allowable 260270003 261630019
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Summary of the Highest 8-Hour Ozone Concentrations for All ... · 55 3/12/19 56 7/5/19 Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date
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Southeast NA Southeast NA Southeast NAMuskegon Co. NA
Southeast NA
77 ppb
261130001 261390005 260770008 260650012
70 ppb
Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville
Max AllowableHoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max AllowableRose Lake Scottville Seney Sault Ste Marie Tecumseh Warren Ypsilanti
Max Allowable Max Allowable
CASTNET SITE CASTNET SITE CASTNET SITE
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
Max. allowable values calculated using 70 ppb as the primary NAAQS
76 ppb
260810022Evans
Max Allowable Max AllowableHarbor BeachMax Allowable
260490021Flint
Max Allowable
260190003FrankfortCassopolis
Max Allowable
260210014Coloma East Seven Mile
7/1/19
79 ppb 79 ppb65 ppb 70 ppb 62 ppb
260050003Holland
Max Allowable Max Allowable
261250001 260492001 261470005Port Huron
Max Allowable
261010922 261210039 260990009
Summary of the Highest 8-Hour Ozone Concentrations for 2019 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 60 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2019 without violation of the standard. Values above Max. Allowable are bold.
7/27/19
Data updated through 3/27/20 - Top 10 2019 concentrations validatedNon-attainment Area (NA)
Allegan Co NA
6/11/19
78 ppb 77 ppb 78 ppb 67 ppb
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max AllowableRose Lake Scottville Seney Sault Ste Marie Tecumseh Warren Ypsilanti
Max Allowable Max Allowable
261130001 261390005 260770008 260650012
71 ppb
CASTNET SITE CASTNET SITE CASTNET SITE
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville
78 ppb 80 ppb 69 ppb
Allen Park261630001
Max Allowable
68 ppb 76 ppb 72 ppb
77 ppb 74 ppb 81 ppb 99 ppb 77 ppb 77 ppb 75 ppb
76 ppb 73 ppb 70 ppb
Max Allowable
260810020Grand RapidsMax Allowable
260630007
5/28/18
Max. allowable values calculated using 70 ppb as the primary NAAQS
5/25/18
75 ppb
260810022Evans
Max Allowable Max AllowableHarbor BeachMax Allowable
260490021Flint
Max Allowable
260190003FrankfortCassopolis
Max Allowable
260210014Coloma East Seven Mile
77 ppb 62 ppb
74 ppb 76 ppb63 ppb 65 ppb 62 ppb
260050003Holland
Max Allowable Max Allowable
261250001 260492001 261470005Port Huron
Max Allowable
261010922 261210039 260990009
Summary of the Highest 8-Hour Ozone Concentrations for 2018 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 60 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2018 without violation of the standard. Values above Max. Allowable are bold.
6/29/18
Data updated through 11/13/18 - Data is not validated
5/24/18
5/25/18 6/7/187/13/18
75 ppb 73 ppb 76 ppb 65 ppb
6/7/18
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
5/25/18
Max Allowable Max Allowable
260270003 261630019
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable78 ppb 67 ppb 62 ppb 68 ppb 75 ppb 74 ppb 73 ppb 70 ppb 73 ppb 64 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste Marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable75 ppb 72 ppb 67 ppb 91 ppb 78 ppb 77 ppb 79 ppb 77 ppb 77 ppb 74 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2017 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 60 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2017 without violation of the standard. Values above Max. Allowable are bold.
7/6/17
Data updated through 10/31/17 - Data is not validated
6/9/17
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
6/10/17 7/6/17
Max. allowable values calculated using 70 ppb as the primary NAAQS
6/10/17
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable84 ppb 78 ppb 67 ppb 69 ppb 81 ppb 78 ppb 76 ppb 79 ppb 79 ppb 63 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste Marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable82 ppb 76 ppb 74 ppb 95 ppb 79 ppb 80 ppb 78 ppb 82 ppb 85 ppb 81 ppb
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
Data subject to validation- updated through 9/30/16Max. allowable values calculated using 70 ppb as the primary NAAQS
5/23/16
5/23/16 6/19/16
5/23/16 6/10/16
Summary of the Highest 8-Hour Ozone Concentrations for 2016 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 60 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2016 without violation of the standard. Values above Max. Allowable are bold.
6/19/16
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable99 ppb 90 ppb 80 ppb 87 ppb 93 ppb 94 ppb 89 ppb 93 ppb 97 ppb 72 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable97 ppb 89 ppb 92 ppb 109 ppb 95 ppb 93 ppb 92 ppb 95 ppb 101 ppb 94 ppb
Top four values for each site are validatedMax. allowable values calculated using 75 ppb as the primary NAAQS
Summary of the Highest 8-Hour Ozone Concentrations for 2015 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2015 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable86 ppb 72 ppb 62 ppb 77 ppb 81 ppb 77 ppb 75 ppb 78 ppb 80 ppb 54 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable84 ppb 74 ppb 76 ppb 89 ppb 76 ppb 78 ppb 77 ppb 90 ppb 86 ppb 78 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2014 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2014 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
4/20/14
5/21/14
5/20/14
Data subject to validation - updated through 9/30/14Max. allowable values calculated using 75 ppb as the primary NAAQS
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable73 ppb 62 ppb 53 ppb 61 ppb 73 ppb 69 ppb 73 ppb 71 ppb 74 ppb 47 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable78 ppb 70 ppb 78 ppb N/A 64 ppb 62 ppb 65 ppb 87 ppb 80 ppb 76 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2013 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2013 without violation of the standard. Values above Max. Allowable are bold.
7/19/13
8/19/13
4/4/13
4/30/13 8/21/13
5/14/13
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
Data subject to validation - updated through 9/30/13
8/19/13
Max. allowable values calculated using 75 ppb as the primary NAAQS
9/10/13
4/22/13 6/21/13
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable81 ppb 77 ppb 72 ppb 66 ppb 84 ppb 84 ppb 84 ppb 83 ppb 88 ppb 69 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2012 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2012 without violation of the standard. Values above Max. Allowable are bold.
8/3/125/24/12 5/21/12
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
2012 Data Subject to ValidationMax. allowable values calculated using 75 ppb as the primary NAAQS
6/28/12 5/20/12
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260370001 261050007 261530001 260330901 260910007 260991003 261610008 CASTNET SITE CASTNET SITE CASTNET SITERose Lake Scottville Seney Sault Ste marie Tecumseh Warren Ypsilanti Hoxyville Unionville Ann Arbor
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable92 ppb 85 ppb 87 ppb N/A 85 ppb 71 ppb 84 ppb 90 ppb 91 ppb 93 ppb
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable95 ppb 86 ppb 85 ppb 76 ppb 89 ppb 91 ppb 86 ppb 92 ppb 92 ppb 78 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
Data validated through 9/30/2011Max. allowable values calculated using 75 ppb as the primary NAAQS
Summary of the Highest 8-Hour Ozone Concentrations for 2011 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2011 without violation of the standard. Values above Max. Allowable are bold.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable97 ppb 84 ppb 84 ppb 78 ppb 87 ppb 93 ppb 92 ppb 95 ppb 95 ppb 78 ppb
261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port HuronMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
Data validated through 9/30/2010Max. allowable values calculated using 75 ppb as the primary NAAQS
Summary of the Highest 8-Hour Ozone Concentrations for 2010 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2010 without violation of the standard. Values above Max. Allowable are bold.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable81 ppb 73 ppb 68 ppb 59 ppb 73 ppb 77 ppb 79 ppb 77 ppb 77 ppb 60 ppb
261130001 261390005 260770008 260650012 261630016 261010922 261210039 260990009 261250001 260492001Houghton Lake Jenison Kalamazoo Lansing Linwood Manistee (tribal) Muskegon New Haven Oak Park OtisvilleMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260890001 261470005 260370001 261050007 261530001 261630015 260910007 260991003 261610008Pashawbestown Port Huron Rose Lake Scottville Seney SW HS Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable86 ppb 71 ppb 78 ppb 76 ppb 78 ppb n/a 74 ppb 64 ppb 81 ppb
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
6/23/2009
Dates shown above a site are the date the violation occurred
5/20/2009 5/3/2009
6/5/2009 5/23/2009 6/24/2009
Summary of the Highest 8-Hour Ozone Concentrations for 2009 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2009 without violation of the standard. Values above Max. Allowable are bold.
Monitor discontinued due to lack of
funding
Max. allowable values calculated using 75 ppb as the primary NAAQS
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable80 ppb 71 ppb 65 ppb 60 ppb 61 ppb 73 ppb 65 ppb 61 ppb 70 ppb 42 ppb
261130001 261390005 260770008 260650012 261630016 261010922 261210039 260990009 261250001 260492001Houghton Lake Jenison Kalamazoo Lansing Linwood Manistee (tribal) Muskegon New Haven Oak Park OtisvilleMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
260890001 261470005 260370001 261050007 261530001 261630015 260910007 260991003 261610008Pashawbestown Port Huron Rose Lake Scottville Seney SW HS Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable75 ppb 60 ppb 75 ppb 68 ppb 66 ppb n/a 72 ppb 58 ppb 74 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2008 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2008 without violation of the standard. Values above Max. Allowable are bold.
Monitor discontinued due to lack of
funding
Monitor discontinued due to lack of
funding
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.Max. allowable values calculated using 75 ppb as the primary NAAQS
Summary of the Highest 8-Hour Ozone Concentrations for 2007 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2007 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable109 ppb 95 ppb 88 ppb 96 ppb 90 ppb 103 ppb 88 ppb 89 ppb 104 ppb 69 ppb
261130001 261390005 260770008 260650012 261630016 261010922 261210039 260990009 261250001 260492001Houghton Lake Jenison Kalamazoo Lansing Linwood Manistee (tribal) Muskegon New Haven Oak Park OtisvilleMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
107 ppb 85 ppb 105 ppb 101 ppb 106 ppb new site 74 ppb 88 ppb 104 ppb 99 ppbValue,
260890001 261470005 260370001 261050007 261530001 261630015 260910007 260991003 261610008Pashawbestown Port Huron Rose Lake Scottville Seney SW HS Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable101 ppb 88 ppb 105 ppb 93 ppb 93 ppb new site 98 ppb 87 ppb 95 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2006 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2006 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable112 ppb 91 ppb 91 ppb 108 ppb 99 ppb 100 ppb 93 ppb 103 ppb 109 ppb 81 ppb
261130001 261390005 260770008 260650012 261630016 261010922 261210039 260990009 261250001 260492001Houghton Lake Jenison Kalamazoo Lansing Linwood Manistee (tribal) Muskegon New Haven Oak Park OtisvilleMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
109 ppb 99 ppb 105 ppb 104 ppb 109 ppb new site 94 ppb 85 ppb 101 ppb 97 ppbValue,
260890001 261470005 260370001 261050007 261530001 261630015 260910007 260991003 261610008Pashawbestown Port Huron Rose Lake Scottville Seney SW HS Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable104 ppb 92 ppb 106 ppb 98 ppb 95 ppb new site 98 ppb 94 ppb 100 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2005 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2005 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable104 ppb 88 ppb 92 ppb 90 ppb 89 ppb 92 ppb 90 ppb 101 ppb 100 ppb
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable80 ppb 101 ppb 95 ppb 101 ppb 101 ppb 104 ppb 90 ppb 71 ppb 89 ppb
260492001 260890001 261470005 260370001 261050007 261530001 260910007 260991003 261610008Otisville Pashawbestown Port Huron Rose Lake Scottville Seney Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable86 ppb 105 ppb 94 ppb 98 ppb 96 ppb 104 ppb 92 ppb 82 ppb 92 ppb
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.Max. Allowable is the maximum 4th highest value that can occur in 2004 without violation of the standard. Values above Max. Allowable are bold.
Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable81 ppb 62 ppb 67 ppb 73 ppb 73 ppb 79 ppb 79 ppb 82 ppb 81 ppb
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable54 ppb 95 ppb 71 ppb 79 ppb 81 ppb 78 ppb 64 ppb 57 ppb 71 ppb
260492001 260890001 261470005 260370001 261050007 261530001 260910007 260991003 261610008Otisville Pashawbestown Port Huron Rose Lake Scottville Seney Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable74 ppb N/A 68 ppb 83 ppb 78 ppb 95 ppb 77 ppb 61 ppb 72 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2004 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 2003 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable86 ppb 63 ppb 68 ppb 79 ppb 81 ppb 75 ppb 77 ppb 84 ppb 79 ppb
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable57 ppb 93 ppb 75 ppb 79 ppb 83 ppb 75 ppb 63 ppb 71 ppb 71 ppb
260492001 260890001 261470005 260370001 261050007 261530001 260910007 260991003 261610008Otisville Pashawbestown Port Huron Rose Lake Scottville Seney Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable74 ppb new site 70 ppb 82 ppb 72 ppb new site 79 ppb 68 ppb 71 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2003 for All Sites in Michigan
Site operated by the State of Indiana (will update when data
becomes available).
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 2002 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable107 ppb 87 ppb 89 ppb 82 ppb 96 ppb 91 ppb 82 ppb 103 ppb 94 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 2002 for All Sites in Michigan
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable82 ppb 97 ppb 91 ppb 99 ppb 94 ppb 90 ppb 81 ppb 84 ppb 89 ppb
260492001 261470005 260370001 261050007 261530001 260910007 260991003 261610008Otisville Port Huron Rose Lake Scottville Seney Tecumseh Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable89 ppb 90 ppb 93 ppb 80 ppb new site 86 ppb 83 ppb 84 ppb
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 2001 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable100 ppb 80 ppb 81 ppb 82 ppb 87 ppb 93 ppb 76 ppb 101 ppb 92 ppb
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable83 ppb 90 ppb 86 ppb 93 ppb 88 ppb 93 ppb 73 ppb 83 ppb 91 ppb
* 1999 data from Ann Arbor is used to calculate the maximum allowable value for Ypsilanti.
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 2000 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable90 ppb 70 ppb 67 ppb 71 ppb 75 ppb * 78 ppb 69 ppb 92 ppb 79 ppb
260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009 261250001Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New Haven Oak Park
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable68 ppb 86 ppb 80 ppb 78 ppb 86 ppb 86 ppb 61 ppb 62 ppb 79 ppb
260492001 261470005 260370001 261050007 260910007 260550903 260991003 261610008Otisville Port Huron Rose Lake Scottville Tecumseh Traverse City Warren Ypsilanti
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable72 ppb 74 ppb 91 ppb 68 ppb 87 ppb 92 ppb 76 ppb 80 ppb **
* 1998 data from Parnell is used to calculate the maximum allowable value for Evans.** 1998 & 1999 data from Ann Arbor is used to calculate the maximum allowable value for Ypsilanti.
Summary of the Highest 8-Hour Ozone Concentrations for 2000 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 1999 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261630001 261610007 260270003 260210014 261630019 260810022 260490021 260190003 260810020Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable100 ppb 96 ppb 73 ppb 62 ppb 73 ppb 88 ppb *** 89 ppb 86 ppb 98 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 1999 for All Sites in Michigan
260630007 260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009Harbor Beach Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New HavenMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
92 ppb 62 ppb new site 90 ppb 86 ppb 97 ppb 89 ppb 78 ppb 66 ppbValue,
261250001 260492001 261470005 260370001 261050007 260910007 260991003 260550903Oak Park Otisville Port Huron Rose Lake Scottville Tecumseh Warren Traverse City
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable89 ppb 86 ppb 84 ppb 98 ppb 81 ppb 92 ppb 83 ppb new site
* Based on 1997 data from Ludington, which was closed in 1997.*** Used 1997 & 1998 data from Parnell to calculate Max allowable value for Evans.
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence.
Max. Allowable is the maximum 4th highest value that can occur in 1998 without violation of the standard. Values above Max. Allowable are bold.Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.
261470030 261630001 261610007 260270003 260210014 261630019 260490021 260190003 260810020Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Flint Frankfort Grand Rapids
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable77 ppb 96 ppb 90 ppb 68 ppb 56 ppb 79 ppb 83 ppb 87 ppb 87 ppb
Summary of the Highest 8-Hour Ozone Concentrations for 1998 for All Sites in Michigan
260630007 260050003 261130001 261390005 260770008 260650012 261630016 261210039 260990009Harbor Beach Holland Houghton Lake Jenison Kalamazoo Lansing Linwood Muskegon New HavenMax Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable
90 ppb 68 ppb new site 83 ppb 83 ppb 92 ppb 95 ppb 71 ppb 71 ppbValue,
261250001 260492001 260812001 261470005 260370001 261050007 260910007 260550903 260991003Oak Park Otisville Parnell Port Huron Rose Lake Scottville Tecumseh Traverse City Warren
Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable103 ppb 89 ppb 85 ppb 84 ppb 107 ppb 69 ppb * 92 ppb new site 72 ppb
* Based on 1996 & 1997 data from Ludington, whose last year of operation was 1997.** Values through 7/30/98.
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610007 260270003 260210014 261630019 260490021 260190003 260810020Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Flint Frankfort Grand Rapids
** Same as 260770905. Operation taken over by MDEQ AQD.
Summary of the Highest 8-Hour Ozone Concentrations for 1997 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610005 260270003 260210014 261630019 261330902 260490021 260190003Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Evart/Paris Flint Frankfort
Summary of the Highest 8-Hour Ozone Concentrations for 1996 for All Sites in Michigan
261050006 261210039 260990009 261250001 260492001 260812001 261470005 260370001 260910007Ludington Muskegon New Haven Oak Park Otisville Parnell Port Huron Rose Lake Tecumseh
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610005 260270003 260210014 261630019 260490021 260190003 260810020Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Flint Frankfort Grand Rapids
Summary of the Highest 8-Hour Ozone Concentrations for 1995 for All Sites in Michigan
260990009 261250001 260492001 260812001 261470005 260370001 260910007 260991003New Haven Oak Park Otisville Parnell Port Huron Rose Lake Tecumseh Warren
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610005 260270003 260210014 261630019 260490021 260190003 260810020Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Flint Frankfort Grand Rapids
260990009 261250001 260492001 260812001 261470005 260370001 260910007 260991003New Haven Oak Park Otisville Parnell Port Huron Rose Lake Tecumseh Warren
Summary of the Highest 8-Hour Ozone Concentrations for 1994 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610005 260270003 260210014 261630019 260410912 260490021 260190003Algonac Allen Park Ann Arbor Cassopolis Coloma East Seven Mile Escanaba Flint Frankfort
Summary of the Highest 8-Hour Ozone Concentrations for 1993 for All Sites in Michigan
The four highest values in ppb are listed. All values at and above 85 ppb are included to illustrate frequency of occurrence. Values at and above 85 ppb are bold.
261470030 261630001 261610005 260270003 260210014 261618001 261630019 260410912 260490021Algonac Allen Park Ann Arbor Cassopolis Coloma Dexter East Seven Mile Escanaba Flint