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
1 Hartford

41

2 East Hartford

32

3 Groton

22

4 Waterbury

21

5 Bridgeport

20

6 West Hartford

20

7 Danbury

17

8 Darien

15

9 New Haven

12

10 Fairfield

9

(local time)

SEE WORLD AQI RANKING

Air Quality contributors Sources

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Contributors

3

Data sources

2

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

#cityUS AQI
1 Sherman

1

2 Trumbull

1

3 West Cornwall

1

4 Winsted

1

5 South Coventry

2

6 Northwest Harwinton

3

7 East Haven

5

8 Guilford Center

7

9 Oxford

8

10 Fairfield

9

(local time)

SEE WORLD AQI RANKING
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
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