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 Madison

97

2 Stratford

56

3 Guilford Center

41

4 Guilford

33

5 Groton

23

6 Branford

20

7 Bridgeport

11

8 East Haven

11

9 Oxford

11

10 Waterbury

10

(local time)

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Air Quality Data contributor(s)

Station(s) operated by

Contributors

40

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

#cityUS AQI
1 Northwest Harwinton

0

2 Sherman

0

3 Somers

0

4 Winsted

0

5 Enfield

1

6 Hebron

1

7 Middlebury

1

8 Stamford

1

9 West Hartford

1

10 Danbury

2

(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 40

Data sources 2

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