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 Southington

85

2 Wauregan

72

3 Storrs

71

4 Mansfield City

67

5 Oxford

63

6 Hartford

60

7 East Hartford

59

8 Waterbury

58

9 Somers

57

10 Middletown

56

(local time)

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LIVE AQI CITY RANKING

Real-time Connecticut
Cleanest city ranking

#cityUS AQI
1 Guilford

0

2 Northwest Harwinton

4

3 Clinton

9

4 Milford

10

5 Winsted

11

6 Branford

14

7 Westport

18

8 New London

20

9 Old Greenwich

21

10 Hamden

22

(local time)

SEE WORLD AQI RANKING

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Connecticut air quality data attribution

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