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Region 1: EPA New England

2013 Ozone Exceedances

(Through September 30, 2013)

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)  
Cornwall
Danbury
E. Hartford
Middletown
Stafford
Westport
09/11/13
09/11/13
09/11/13
09/11/13
09/11/13
09/11/13
0.081
0.088
0.086
0.079
0.084
0.079
Peak Ozone AQI
Greenwich
Westport
08/21/13
08/21/13
0.082
0.082
Peak Ozone AQI
Groton
Madison
Stratford
07/20/13
07/20/13
07/20/13
0.084
0.079
0.082
Peak Ozone AQI
E. Hartford
Greenwich
Groton
Madison
Middletown
New Haven
Stafford
Stratford
Westport
07/19/13
07/19/13
07/19/13
07/19/13
07/19/13
07/19/13
07/19/13
07/19/13
07/19/13
0.079
0.083
0.092
0.079
0.086
0.077
0.081
0.090
0.100
Peak Ozone AQI
Greenwich
Groton
Madison
Stratford
Westport
07/18/13
07/18/13
07/18/13
07/18/13
07/18/13
0.084
0.076
0.081
0.090
0.087
Peak Ozone AQI
Greenwich
Westport
07/17/13
07/17/13
0.080
0.079
Peak Ozone AQI
Greenwich 07/09/13 0.078 Peak Ozone AQI
Madison
Stratford
Westport
07/08/13
07/08/13
07/08/13
0.078
0.081
0.081
Peak Ozone AQI
Madison
New Haven
Stratford
Westport
07/07/13
07/07/13
07/07/13
07/07/13
0.078
0.076
0.078
0.082
Peak Ozone AQI
Stratford 07/06/13 0.076 Peak Ozone AQI
Groton
Madison
Middletown
New Haven
Stratford
Westport
06/25/13
06/25/13
06/25/13
06/25/13
06/25/13
06/25/13
0.090
0.089
0.097
0.078
0.091
0.088
Peak Ozone AQI
Greenwich
Groton
Madison
Stratford
Westport
06/24/13
06/24/13
06/24/13
06/24/13
06/24/13
0.080
0.087
0.089
0.088
0.085
Peak Ozone AQI
Danbury 06/22/13 0.076 Peak Ozone AQI
Danbury
E. Hartford
Middletown
Stafford
06/21/13
06/21/13
06/21/13
06/21/13
0.076
0.077
0.082
0.083
Peak Ozone AQI
Stafford 06/01/13 0.081 Peak Ozone AQI
Cornwall
Danbury
E. Hartford
Greenwich
Groton
Middletown
New Haven
Stafford
Stratford
Westport
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
05/31/13
0.085
0.081
0.079
0.076
0.078
0.082
0.082
0.083
0.082
0.082
Peak Ozone AQI
Greenwich
Groton
Madison
Middletown
Stratford
Westport
05/30/13
05/30/13
05/30/13
05/30/13
05/30/13
05/30/13
0.089
0.086
0.085
0.086
0.094
0.095
Peak Ozone AQI

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Maine
Monitor Location Date Concentration (ppm)  
Cape Elizabeth
Kennebunkport
Port Clyde
09/11/13
09/11/13
09/11/13
0.081
0.084
0.076
Peak Ozone AQI
Kennebunkport 08/22/13 0.076 Peak Ozone AQI
Jonesport
Port Clyde
07/19/13
07/19/13
0.079
0.082
Peak Ozone AQI
Acadia NP - Cadillac Mtn
Acadia NP - McFarland Hill
Cape Elizabeth
Holden
Kennebunkport
Port Clyde
06/01/13
06/01/13
06/01/13
06/01/13
06/01/13
06/01/13
0.078
0.079
0.080
0.076
0.081
0.076
Peak Ozone AQI
Cape Elizabeth
Kennebunkport
Port Clyde
05/31/13
05/31/13
05/31/13
0.077
0.076
0.077
Peak Ozone AQI

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Massachusetts
Monitor Location Date Concentration (ppm)  
Chicopee
Lynn
09/11/13
09/11/13
0.082
0.078
Peak Ozone AQI
Fall River
Lynn
Truro
07/19/13
07/19/13
07/19/13
0.079
0.078
0.076
Peak Ozone AQI
Fairhaven
Fall River
Martha's Vineyard
07/18/13
07/18/13
07/18/13
0.087
0.090
0.079
Peak Ozone AQI
Fall River
Truro
06/25/13
06/25/13
0.080
0.077
Peak Ozone AQI
Adams
Boston - Long Island
05/31/13
05/31/13
0.076
0.077
Peak Ozone AQI
Fall River
Truro
05/30/13
05/30/13
0.078
0.079
Peak Ozone AQI

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New Hampshire
Monitor Location Date Concentration (ppm)  
Portsmouth 08/21/13 0.076 Peak Ozone AQI
Mount Washington Summit 04/29/13 0.076 Peak Ozone AQI
Mount Washington Summit 04/28/13 0.076 Peak Ozone AQI

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Rhode Island
Monitor Location Date Concentration (ppm)  
E. Providence 09/11/13 0.084 Peak Ozone AQI
E. Providence 07/19/13 0.081 Peak Ozone AQI
E. Providence
Narragansett
07/18/13
07/18/13
0.078
0.093
Peak Ozone AQI
E. Providence
Narragansett
W. Greenwich
06/25/13
06/25/13
06/25/13
0.076
0.080
0.083
Peak Ozone AQI
Narragansett 06/24/13 0.079 Peak Ozone AQI
E. Providence
W. Greenwich
05/31/13
05/31/13
0.076
0.081
Peak Ozone AQI
E. Providence
Narragansett
05/30/13
05/30/13
0.076
0.082
Peak Ozone AQI

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Vermont
Monitor Location Date Concentration (ppm)  
None

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