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

#cityUS AQI
1Hartford

43

2Northwest Harwinton

42

3East Hartford

38

4West Cornwall

38

5West Hartford

38

6Groton

37

7Waterbury

36

8Bridgeport

35

9Guilford Center

35

10New Haven

34

(local time)

SEE WORLD AQI RANKING

Data provided by
9 Anonymous contributor

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

#cityUS AQI
1Sherman

23

2Fairfield

26

3Westport

26

4Danbury

28

5Winsted

29

6New Haven

34

7South Coventry

34

8Bridgeport

35

9Guilford Center

35

10Waterbury

36

(local time)

SEE WORLD AQI RANKING
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