Air quality · North America
Air quality in Canada today
Right now the most polluted of the 8 Canada cities we cover is Vancouver at AQI 100 (Moderate); the cleanest is Winnipeg at 31.
US EPA AQI, modelled from the CAMS forecast. Refreshed 3 Nov, 07:52 UTC+0.
Cities in Canada, worst air first
| # | City | AQI | Category | Population |
|---|---|---|---|---|
| 1 | Vancouver British Columbia | 100 | Moderate | 0.7 m people |
| 2 | Montreal Quebec | 59 | Moderate | 1.8 m people |
| 3 | Ottawa Ontario | 57 | Moderate | 1.0 m people |
| 4 | Edmonton Alberta | 54 | Moderate | 1.0 m people |
| 5 | Calgary Alberta | 52 | Moderate | 1.3 m people |
| 6 | Toronto Ontario | 41 | Good | 2.8 m people |
| 7 | Mississauga Ontario | 40 | Good | 0.7 m people |
| 8 | Winnipeg Manitoba | 31 | Good | 0.7 m people |
- Good 0–50
- Moderate 51–100
- Unhealthy for sensitive groups 101–150
- Unhealthy 151–200
- Very unhealthy 201–300
- Hazardous 301–500
Each city’s value is the CAMS model at the city’s coordinates, scored on the US EPA AQI. It is an estimate, not a station reading. How we calculate it.