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Region 1: EPA New England

2010 Ozone Exceedances

(Through December 31, 2010)

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)  
Stafford 09/07/10 0.078 Peak Ozone AQI
Cornwall
Danbury
East Hartford
Middletown
Stafford
Westport
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
0.083
0.097
0.089
0.086
0.101
0.079
Peak Ozone AQI
Danbury
Greenwich
Groton
Middletown
Stratford
Westport
09/01/10
09/01/10
09/01/10
09/01/10
09/01/10
09/01/10
0.076
0.091
0.078
0.079
0.080
0.087
Peak Ozone AQI
Greenwich
Stratford
Westport
08/17/10
08/17/10
08/17/10
0.082
0.077
0.077
Peak Ozone AQI
Greenwich
Westport
08/10/10
08/10/10
0.080
0.076
Peak Ozone AQI
Danbury
Middletown
Stafford
08/09/10
08/09/10
08/09/10
0.084
0.080
0.083
Peak Ozone AQI
Danbury
East Hartford
Stafford
Westport
07/28/10
07/28/10
07/28/10
07/28/10
0.076
0.079
0.087
0.078
Peak Ozone AQI
Greenwich
Stratford
Westport
07/21/10
07/21/10
07/21/10
0.076
0.077
0.079
Peak Ozone AQI
Stafford 07/19/10 0.078 Peak Ozone AQI
Madison 07/18/10 0.077 Peak Ozone AQI
Madison
Stratford
Westport
07/17/10
07/17/10
07/17/10
0.081
0.080
0.078
Peak Ozone AQI
Danbury
East Hartford
Middletown
Stafford
07/16/10
07/16/10
07/16/10
07/16/10
0.091
0.077
0.078
0.083
Peak Ozone AQI
Danbury
Greenwich
Stratford
Westport
07/12/10
07/12/10
07/12/10
07/12/10
0.084
0.082
0.076
0.083
Peak Ozone AQI
Greenwich
Stratford
07/07/10
07/07/10
0.079
0.077
Peak Ozone AQI
Madison 07/06/10 0.080 Peak Ozone AQI
Madison
Stratford
Westport
07/05/10
07/05/10
07/05/10
0.079
0.080
0.079
Peak Ozone AQI
Madison
Stratford
07/04/10
07/04/10
0.082
0.079
Peak Ozone AQI
Madison 06/28/10 0.080 Peak Ozone AQI
Danbury
East Hartford
Middletown
New Haven
06/27/10
06/27/10
06/27/10
06/27/10
0.084
0.076
0.083
0.076
Peak Ozone AQI
Madison 06/26/10 0.076 Peak Ozone AQI
Groton 06/24/10 0.078 Peak Ozone AQI
Groton 06/05/10 0.076 Peak Ozone AQI
Greenwich
Stratford
Westport
06/04/10
06/04/10
06/04/10
0.077
0.077
0.077
Peak Ozone AQI
Cornwall
Danbury
Middletown
05/01/10
05/01/10
05/01/10
0.087
0.088
0.080
Peak Ozone AQI

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Maine
Monitor Location Date Concentration (ppm)  
Acadia NP - Cadillac Mtn. 09/03/10 0.080 Peak Ozone AQI
Acadia NP - McFarland Hill
Acadia NP - Cadillac Mtn.
Cape Elizabeth
Jonesport
Kennebunkport
Port Clyde
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
0.087
0.079
0.096
0.078
0.094
0.092
Peak Ozone AQI
Acadia NP - McFarland Hill
Kennebunkport
09/01/10
09/01/10
0.078
0.077
Peak Ozone AQI
Cape Elizabeth
Kennebunkport
07/28/10
07/28/10
0.080
0.076
Peak Ozone AQI
Port Clyde 07/17/10 0.076 Peak Ozone AQI
Acadia NP - Cadillac Mtn. 05/02/10 0.089 Peak Ozone AQI

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Massachusetts
Monitor Location Date Concentration (ppm)  
Ware 09/07/10 0.076 Peak Ozone AQI
Adams
Amherst
Boston - Long Island
Chelmsford
Chicopee
East Milton
Haverhill
Lynn
Stow
Truro
Uxbridge
Ware
Worcester
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
09/02/10
0.080
0.078
0.080
0.079
0.091
0.082
0.076
0.084
0.078
0.078
0.078
0.089
0.084
Peak Ozone AQI
Fairhaven
Martha's Vineyard
Newburyport
09/01/10
09/01/10
09/01/10
0.077
0.080
0.079
Peak Ozone AQI
Truro
Martha's Vineyard
08/31/10
08/31/10
0.079
0.082
Peak Ozone AQI
Worcester 08/09/10 0.078 Peak Ozone AQI
Chicopee
Ware
Worcester
07/28/10
07/28/10
07/28/10
0.078
0.084
0.077
Peak Ozone AQI
East Milton 07/21/10 0.076 Peak Ozone AQI
Martha's Vineyard 07/18/10 0.086 Peak Ozone AQI
Fairhaven
Martha's Vineyard
Truro
07/17/10
07/17/10
07/17/10
0.080
0.076
0.080
Peak Ozone AQI
Fairhaven 07/06/10 0.079 Peak Ozone AQI
East Milton
Fairhaven
Martha's Vineyard
07/05/10
07/05/10
07/05/10
0.083
0.082
0.076
Peak Ozone AQI
Martha's Vineyard 07/04/10 0.101 Peak Ozone AQI
Fairhaven
Martha's Vineyard
Truro
06/24/10
06/24/10
06/24/10
0.078
0.078
0.087
Peak Ozone AQI
Ware 05/02/10 0.076 Peak Ozone AQI
Ware 05/01/10 0.077 Peak Ozone AQI

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New Hampshire
Monitor Location Date Concentration (ppm)  
Miller State Park 09/07/10 0.078 Peak Ozone AQI
Laconia 09/03/10 0.076 Peak Ozone AQI
Miller State Park
Nashua - Gilson Road
09/02/10
09/02/10
0.082
0.078
Peak Ozone AQI
Portsmouth
Rye
09/01/10
09/01/10
0.082
0.081
Peak Ozone AQI
Concord
Manchester
Miller State Park
Nashua
Portsmouth
07/28/10
07/28/10
07/28/10
07/28/10
07/28/10
0.080
0.077
0.082
0.081
0.076
Peak Ozone AQI
Mount Washington Summit 07/13/10 0.077 Peak Ozone AQI
Mount Washington Summit 07/12/10 0.080 Peak Ozone AQI
Laconia 05/02/10 0.076 Peak Ozone AQI
Miller State Park 05/01/10 0.077 Peak Ozone AQI

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Rhode Island
Monitor Location Date Concentration (ppm)  
East Providence
West Greenwich
09/02/10
09/02/10
0.086
0.081
Peak Ozone AQI
Narragansett 09/01/10 0.080 Peak Ozone AQI
East Providence 07/21/10 0.076 Peak Ozone AQI
East Providence
Narragansett
07/17/10
07/17/10
0.076
0.080
Peak Ozone AQI
Narragansett 07/05/10 0.083 Peak Ozone AQI
Narragansett
West Greenwich
06/24/10
06/24/10
0.079
0.076
Peak Ozone AQI

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Vermont
Monitor Location Date Concentration (ppm)  
None      

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