(Through July 27, 2021)
Below are the exceedances of the 0.070 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) |
|
| Greenwich |
July 27, 2021 |
0.072 |
Peak Ozone AQI |
| Greenwich |
July 16, 2021 |
0.076 |
Peak Ozone AQI |
| Middletown |
July 16, 2021 |
0.076 |
| Stratford |
July 16, 2021 |
0.087 |
| Westport |
July 16, 2021 |
0.087 |
| Greenwich |
July 7, 2021 |
0.077 |
Peak Ozone AQI |
| Madison |
July 7, 2021 |
0.089 |
| New Haven |
July 7, 2021 |
0.081 |
| Stratford |
July 7, 2021 |
0.091 |
| Westport |
July 7, 2021 |
0.089 |
| Middletown |
July 7, 2021 |
0.077 |
Peak Ozone AQI |
| Stratford |
July 6, 2021 |
0.071 |
| Westport |
July 6, 2021 |
0.078 |
| Greenwich |
June 30, 2021 |
0.078 |
Peak Ozone AQI |
| Madison |
June 30, 2021 |
0.079 |
| Middletown |
June 30, 2021 |
0.078 |
| New Haven |
June 30, 2021 |
0.071 |
| Stratford |
June 30, 2021 |
0.080 |
| Westport |
June 30, 2021 |
0.085 |
| Greenwich |
June 29, 2021 |
0.077 |
Peak Ozone AQI |
| Middletown |
June 29, 2021 |
0.074 |
| Stratford |
June 29, 2021 |
0.072 |
| Westport |
June 29, 2021 |
0.080 |
| Middletown |
June 28, 2021 |
0.072 |
Peak Ozone AQI |
| Groton |
June 19, 2021 |
0.072 |
Peak Ozone AQI |
| Madison |
June 19, 2021 |
0.081 |
| Stratford |
June 19, 2021 |
0.073 |
| Middletown |
June 18, 2021 |
0.076 |
Peak Ozone AQI |
| Danbury |
June 7, 2021 |
0.071 |
Peak Ozone AQI |
| East Hartford |
June 7, 2021 |
0.074 |
| Greenwich |
June 7, 2021 |
0.072 |
| Greenwich |
June 6, 2021 |
0.082 |
Peak Ozone AQI |
| Groton |
June 6, 2021 |
0.074 |
| Madison |
June 6, 2021 |
0.077 |
| Middletown |
June 6, 2021 |
0.071 |
| Stratford |
June 6, 2021 |
0.078 |
| Westport |
June 6, 2021 |
0.086 |
| Abington |
June 5, 2021 |
0.082 |
Peak Ozone AQI |
| Greenwich |
June 5, 2021 |
0.071 |
| Groton |
June 5, 2021 |
0.079 |
| Madison |
June 5, 2021 |
0.083 |
| Middletown |
June 5, 2021 |
0.086 |
| New Haven |
June 5, 2021 |
0.076 |
| Stratford |
June 5, 2021 |
0.086 |
| Westport |
June 5, 2021 |
0.080 |
| Danbury |
May 26, 2021 |
0.075 |
Peak Ozone AQI |
| Stafford |
May 26, 2021 |
0.071 |
| Cornwall |
May 21, 2021 |
0.076 |
Peak Ozone AQI |
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Maine
| Monitor Location |
Date |
Concentration (ppm) |
|
| Acadia NP—McFarland |
June 7, 2021 |
0.072 |
Peak Ozone AQI |
| Bar Harbor—Cadillac Mtn. |
June 7, 2021 |
0.076 |
| Cape Elizabeth |
June 7, 2021 |
0.079 |
| Kennebunkport |
June 7, 2021 |
0.075 |
| Port Clyde |
June 7, 2021 |
0.072 |
| Acadia NP—McFarland |
June 6, 2021 |
0.075 |
Peak Ozone AQI |
| Bar Harbor—Cadillac Mtn. |
June 6, 2021 |
0.080 |
| Cape Elizabeth |
June 6, 2021 |
0.075 |
| Kennebunkport |
June 6, 2021 |
0.077 |
| Port Clyde |
June 6, 2021 |
0.076 |
| Shapleigh Ball Park |
June 6, 2021 |
0.071 |
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Massachusetts
| Monitor Location |
Date |
Concentration (ppm) |
|
| Fairhaven |
June 6, 2021 |
0.071 |
Peak Ozone AQI |
| Fall River |
June 6, 2021 |
0.071 |
| Truro |
June 6, 2021 |
0.073 |
| Weymouth |
June 6, 2021 |
0.073 |
| Boston—Roxbury |
June 5, 2021 |
0.074 |
Peak Ozone AQI |
| Brockton |
June 5, 2021 |
0.071 |
| Truro |
June 5, 2021 |
0.071 |
| Uxbridge |
June 5, 2021 |
0.072 |
| Weymouth |
June 5, 2021 |
0.077 |
| Chicopee |
May 26, 2021 |
0.072 |
Peak Ozone AQI |
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New Hampshire
| Monitor Location |
Date |
Concentration (ppm) |
|
| Concord |
June 6, 2021 |
0.071 |
Peak Ozone AQI |
| Odiorne State Park |
June 6, 2021 |
0.075 |
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Rhode Island
| Monitor Location |
Date |
Concentration (ppm) |
|
| East Providence |
June 6, 2021 |
0.071 |
Peak Ozone AQI |
| Narragansett |
June 6, 2021 |
0.073 |
| West Greenwich |
June 6, 2021 |
0.074 |
| East Providence |
June 5, 2021 |
0.081 |
Peak Ozone AQI |
| West Greenwich |
June 5, 2021 |
0.082 |
| East Matunuck |
May 18, 2021 |
0.072 |
Peak Ozone AQI |
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Vermont
| Monitor Location |
Date |
Concentration (ppm) |
|
| |
|
|
|
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