Air quality in Ontario

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

LAST UPDATE (local time)

LIVE AQI CITY RANKING

Real-time Ontario
Most polluted city ranking

#cityUS AQI
1Chatham

74

2Windsor

66

3Burlington

61

4Temiskaming Shores

60

5Kitchener

59

6Brantford

57

7Cornwall

57

8Hamilton

52

9Ottawa

49

10Nepean

44

(local time)

SEE WORLD AQI RANKING

Data provided by
8 sources

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LIVE AQI CITY RANKING

Real-time Ontario
Cleanest city ranking

#cityUS AQI
1Petawawa

12

2Peterborough

12

3Oshawa

17

4Port Stanley

17

5Sarnia

17

6North Bay

21

7Belleville

25

8Dorset

25

9Grand Bend

25

10Oakville

25

(local time)

SEE WORLD AQI RANKING
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