Air quality in Connecticut

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

Last update at (local time)

LIVE AQI CITY RANKING

Real-time Connecticut
Most polluted city ranking

#cityUS AQI
1 Westport

20

2 East Hartford

17

3 Danbury

16

4 Bridgeport

15

5 Waterbury

15

6 Middletown

14

7 New Haven

14

8 West Cornwall

14

9 Groton

13

10 Hartford

13

(local time)

SEE WORLD AQI RANKING

Air Quality Data contributor(s)

Station(s) operated by

Contributors

35

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

#cityUS AQI
1 Enfield

0

2 Guilford

0

3 Stamford

1

4 Sherman

3

5 Middlebury

4

6 Waterford

4

7 Hamden

6

8 Somers

6

9 Winsted

6

10 Guilford Center

7

(local time)

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

Reduce your air pollution exposure in Connecticut

Connecticut air quality data attribution

Contributors 35

Data sources 2

Which is the most polluted city in Connecticut?

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