AQHI map
AQHI now · major cities
highest first- Calgary, ABModerate risk · Today 33.2
- Regina, SKLow risk · Today 33
- Edmonton, ABLow risk · Today 32.6
- Saskatoon, SKLow risk · Today 32.6
- Toronto, ONLow risk · Tonight 22.5
- London, ONLow risk · Tonight 22.3
- Kelowna, BCLow risk · Today 32.3
- Ottawa, ONLow risk · Tonight 22.1
- Vancouver, BCLow risk · Today 32.1
- Greater Sudbury, ONLow risk · Tonight 22
- Hamilton, ONLow risk · Tonight 22
- Thunder Bay, ONLow risk · Tonight 21.9
- Whitehorse, YTLow risk · Today 21.9
- Victoria, BCLow risk · Today 41.8
- Prince George, BCLow risk · Today 21.8
- Moncton, NBLow risk · Tonight 11.7
- Halifax, NSLow risk · Tonight 21.6
- Winnipeg, MBLow risk · Tonight 21.6
- Charlottetown, PELow risk · Tonight 11.6
- St. John's, NLLow risk · Tonight 11.4
- Yellowknife, NTLow risk · Today 11.4
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.