Air quality in Connecticut

Air quality index (AQI) and PM2.5 air pollution in Connecticut

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time Connecticut
Most polluted city ranking

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#cityUS AQI
1 Westport

44

2 East Haven

35

3 Hamden

35

4 Naugatuck

35

5 Waterbury

35

6 Oxford

34

7 Trumbull

34

8 Danbury

33

9 Middlebury

31

10 New Haven

29

(local time)

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Air Quality Data contributor(s)

Station(s) operated by

Contributors

2

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

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#cityUS AQI
1 South Coventry

1

2 Guilford

5

3 Storrs

5

4 Winsted

8

5 West Hartford

10

6 West Cornwall

12

7 Groton

14

8 Somers

14

9 Sherman

16

10 Northwest Harwinton

20

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
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Hazardous
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How to best protect from air pollution?

Reduce your air pollution exposure in Connecticut

Connecticut air quality data attribution

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Which is the most polluted city in Connecticut?

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