Real-time air pollution rankings for 19 cities across Canada, updated hourly. See which cities have the highest pollution levels and worst air quality.
Most Polluted Cities in Canada
The most polluted city in Canada is Laval (AQI 78), followed by Edmonton (AQI 57), Québec (AQI 55). Currently, 0 out of 19 monitored cities in Canada report unhealthy air quality with an AQI above 100.
Laval
Canada
AQI
Edmonton
Canada
AQI
Québec
Canada
AQI
Vancouver
Canada
AQI
Victoria
Canada
AQI
Surrey
Canada
AQI
Winnipeg
Canada
AQI
Halifax
Canada
AQI
London
Canada
AQI
Calgary
Canada
AQI
Markham
Canada
AQI
Ottawa
Canada
AQI
Hamilton
Canada
AQI
Vaughan
Canada
AQI
Toronto
Canada
AQI
Brampton
Canada
AQI
Mississauga
Canada
AQI
Etobicoke
Canada
AQI
Windsor
Canada
AQI
Understanding Air Quality Index
Good
Air quality is satisfactory, and air pollution poses little or no risk.
Moderate
Air quality is acceptable. However, there may be a risk for some people.
Unhealthy for Sensitive Groups
Members of sensitive groups may experience health effects.
Unhealthy
Everyone may begin to experience health effects.
Very Unhealthy
Health alert: everyone may experience more serious health effects.
Hazardous
Health warnings of emergency conditions. The entire population is likely to be affected.
The Air Quality Index (AQI) is a scale from 0 to 500 that measures air pollution levels. Poor air quality can cause respiratory issues, cardiovascular problems, and other health concerns. Rankings are updated hourly to help you stay informed.
Source: US EPA Air Quality Index
Last updated: 23 Mar 23:09
