AQHI map
AQHI now · major cities
highest first- Toronto, ONModerate risk · Today 43.6
- Calgary, ABModerate risk · Today 33.2
- Hamilton, ONLow risk · Today 32.9
- Edmonton, ABLow risk · Today 32.5
- Ottawa, ONLow risk · Today 22.4
- Winnipeg, MBLow risk · Today 22.2
- Halifax, NSLow risk · Today 22
- Moncton, NBLow risk · Today 21.9
- Saskatoon, SKLow risk · Today 21.7
- Vancouver, BCLow risk · Today 21.5
- Victoria, BCLow risk · Today 11.2
- London, ONLow risk · Today 31
About the AQHI
The Air Quality Health Index combines ozone, fine particles (PM2.5) and nitrogen dioxide into one number for the short-term health risk of the air. Wildfire smoke can push it above 10 even hundreds of kilometres from the fires, so check it before a long run or hike in summer.
Most of Quebec reports air quality through the province's own IQA index; Montréal, Gatineau and Québec City also have the AQHI.