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Region 1: EPA New England

2012 Ozone Exceedances

(Through September 30, 2012)

Below are the exceedances of the 0.075 parts per million (ppm) eight-hour average ozone standard, and the dates they occurred for each ozone monitor in New England. These data are preliminary, not quality assured and are subject to change.

Connecticut
Monitor Location Date Concentration (ppm)  
Danbury
East Hartford
Middletown
Staffordt
09/13/12
09/13/12
09/13/12
09/13/12
0.076
0.079
0.081
0.085
Peak Ozone AQI
Greenwich
Groton
Madison
Middletown
New Haven
Stratford
Westport
08/31/12
08/31/12
08/31/12
08/31/12
08/31/12
08/31/12
08/31/12
0.089
0.092
0.097
0.088
0.096
0.095
0.092
Peak Ozone AQI
Stratford 08/24/12 0.081 Peak Ozone AQI
Greenwich
Middletown
New Haven
Westport
08/23/12
08/23/12
08/23/12
08/23/12
0.077
0.079
0.076
0.077
Peak Ozone AQI
New Haven
Stratford
08/22/12
08/22/12
0.079
0.082
Peak Ozone AQI
Danbury
East Hartford
Greenwich
Middletown
Stafford
Westport
08/17/12
08/17/12
08/17/12
08/17/12
08/17/12
08/17/12
0.084
0.077
0.078
0.079
0.083
0.076
Peak Ozone AQI
Cornwall
Danbury
Middletown
08/09/12
08/09/12
08/09/12
0.079
0.087
0.076
Peak Ozone AQI
Danbury 08/08/12 0.078 Peak Ozone AQI
Danbury
Greenwich
Madison
Middletown
Stratford
Westport
08/03/12
08/03/12
08/03/12
08/03/12
08/03/12
08/03/12
0.081
0.077
0.077
0.080
0.084
0.078
Peak Ozone AQI
Greenwich
Groton
Stratford
08/02/12
08/02/12
08/02/12
0.081
0.077
0.078
Peak Ozone AQI
East Hartford
Greenwich
Middletown
New Haven
Stafford
Westport
07/26/12
07/26/12
07/26/12
07/26/12
07/26/12
07/26/12
0.076
0.080
0.079
0.081
0.083
0.080
Peak Ozone AQI
Greenwich
Groton
Madison
New Haven
Stratford
Westport
07/18/12
07/18/12
07/18/12
07/18/12
07/18/12
07/18/12
0.077
0.091
0.087
0.084
0.080
0.083
Peak Ozone AQI
Cornwall
Danbury
East Hartford
Greenwich
Middletown
New Haven
Stafford
Stratford
Westport
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
0.079
0.085
0.091
0.095
0.098
0.081
0.096
0.087
0.093
Peak Ozone AQI
Greenwich
Madison
Middletown
New Haven
Stafford
Stratford
Westport
07/14/12
07/14/12
07/14/12
07/14/12
07/14/12
07/14/12
07/14/12
0.079
0.086
0.085
0.090
0.076
0.088
0.086
Peak Ozone AQI
Cornwall
Danbury
East Hartford
07/13/12
07/13/12
07/13/12
0.079
0.090
0.077
Peak Ozone AQI
Stafford 07/12/12 0.076 Peak Ozone AQI
Greenwich
Westport
07/06/12
07/06/12
0.076
0.077
Peak Ozone AQI
Madison
New Haven
Stratford
07/04/12
07/04/12
07/04/12
0.078
0.078
0.078
Peak Ozone AQI
Greenwich
Groton
New Haven
Stratford
Westport
07/01/12
07/01/12
07/01/12
07/01/12
07/01/12
0.080
0.076
0.089
0.093
0.091
Peak Ozone AQI
Groton
Madison
Stratford
06/30/12
06/30/12
06/30/12
0.083
0.080
0.082
Peak Ozone AQI
Groton
Madison
Middletown
New Haven
Stratford
Westport
06/29/12
06/29/12
06/29/12
06/29/12
06/29/12
06/29/12
0.104
0.099
0.076
0.078
0.090
0.078
Peak Ozone AQI
Greenwich
Madison
Straford
Westport
06/28/12
06/28/12
06/28/12
06/28/12
0.088
0.076
0.084
0.084
Peak Ozone AQI
Greenwich
Madison
Middletown
New Haven
Stratford
06/22/12
06/22/12
06/22/12
06/22/12
06/22/12
0.081
0.079
0.077
0.076
0.077
Peak Ozone AQI
Greenwich
Groton
Madison
Middletown
New Haven
Stratford
Westport
06/21/12
06/21/12
06/21/12
06/21/12
06/21/12
06/21/12
06/21/12
0.082
0.082
0.090
0.078
0.076
0.089
0.082
Peak Ozone AQI
Greenwich
Groton
Madison
Stratford
Westport
06/20/12
06/20/12
06/20/12
06/20/12
06/20/12
0.090
0.087
0.093
0.097
0.089
Peak Ozone AQI
Danbury
Stafford
05/13/12
05/13/12
0.077
0.086
Peak Ozone AQI
Stafford 04/16/12 0.079 Peak Ozone AQI

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Maine
Monitor Location Date Concentration (ppm)  
Kennebunkport 08/23/12 0.079 Peak Ozone AQI
Cape Elizabeth
Kennebunkport
08/03/12
08/03/12
0.078
0.079
Peak Ozone AQI
Cape Elizabeth
Kennebunkport
West Buxton
07/13/12
07/13/12
07/13/12
0.076
0.082
0.077
Peak Ozone AQI
Kennebunkport 06/29/12 0.077 Peak Ozone AQI

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Massachusetts
Monitor Location Date Concentration (ppm)  
Ware 09/13/12 0.076 Peak Ozone AQI
Fall River
Truro
08/31/12
08/31/12
0.078
0.085
Peak Ozone AQI
Ware 08/17/12 0.077 Peak Ozone AQI
Haverhill 08/09/12 0.079 Peak Ozone AQI
Fall River 07/18/12 0.080 Peak Ozone AQI
Boston - Long Island
Boston - Roxbury
Chelmsford
Chicopee
East Milton
Haverhill
Lynn
Newburyport
Uxbridge
Ware
Worcester
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
07/17/12
0.087
0.083
0.089
0.076
0.080
0.089
0.094
0.080
0.089
0.079
0.092
Peak Ozone AQI
Lynn 07/15/12 0.076 Peak Ozone AQI
Fall River
Martha's Vineyard
Truro
07/14/12
07/14/12
07/14/12
0.077
0.084
0.077
Peak Ozone AQI
Amherst
Chicopee
Haverhill
Newburyport
07/13/12
07/13/12
07/13/12
07/13/12
0.082
0.084
0.079
0.080
Peak Ozone AQI
Martha's Vineyard 07/07/12 0.076 Peak Ozone AQI
Martha's Vineyard 07/01/12 0.078 Peak Ozone AQI
Fall River
Martha's Vineyard
Truro
06/30/12
06/30/12
06/30/12
0.082
0.077
0.088
Peak Ozone AQI
East Milton
Fall River
Martha's Vineyard
Truro
06/29/12
06/29/12
06/29/12
06/29/12
0.078
0.090
0.083
0.079
Peak Ozone AQI
Fall River
Martha's Vineyard
Truro
06/22/12
06/22/12
06/22/12
0.078
0.080
0.080
Peak Ozone AQI
Martha's Vineyard 06/21/12 0.100 Peak Ozone AQI
Martha's Vineyard
Truro
06/20/12
06/20/12
0.094
0.077
Peak Ozone AQI
Ware 05/13/12 0.076 Peak Ozone AQI

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New Hampshire
Monitor Location Date Concentration (ppm)  
Miller State Park 09/13/12 0.078 Peak Ozone AQI
Odiorne State Park 08/23/12 0.076 Peak Ozone AQI
Londonderry
Nashua
07/17/12
07/17/12
0.082
0.085
Peak Ozone AQI
Londonderry
Miller State Park
Nashua
Odiorne State Park
Portsmouth
07/13/12
07/13/12
07/13/12
07/13/12
07/13/12
0.077
0.078
0.079
0.078
0.083
Peak Ozone AQI

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Rhode Island
Monitor Location Date Concentration (ppm)  
East Providence
Narragansett
West Greenwich
08/31/12
08/31/12
08/31/12
0.093
0.084
0.078
Peak Ozone AQI
East Providence 08/23/12 0.076 Peak Ozone AQI
East Providence 08/17/12 0.076 Peak Ozone AQI
East Providence 08/03/12 0.079 Peak Ozone AQI
East Providence
Narragansett
07/18/12
07/18/12
0.077
0.082
Peak Ozone AQI
East Providence 07/17/12 0.080 Peak Ozone AQI
East Providence
Narragansett
07/14/12
07/14/12
0.079
0.081
Peak Ozone AQI
Narragansett 06/30/12 0.086 Peak Ozone AQI
East Providence
Narragansett
West Greenwich
06/29/12
06/29/12
06/29/12
0.085
0.097
0.082
Peak Ozone AQI
East Providence 06/22/12 0.076 Peak Ozone AQI
Narragansett 06/21/12 0.078 Peak Ozone AQI
Narragansett 06/20/12 0.081 Peak Ozone AQI

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Vermont
Monitor Location Date Concentration (ppm)  
None None None None

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