Calculated at 12:00 pm EDT Tuesday, September 2, 2025
3

low risk
(1 - 3)
moderate risk
(4 - 6)
high risk
(7 - 10)
very high risk
Forecast for Toronto Downtown
- Forecast Air Quality Health Index maximums for Toronto Downtown
- Issued at: 6:00 am EDT September 2, 2025
Forecast Air Quality Health Index maximums for Toronto Downtown
Tuesday | 3 - Low Risk |  |
Tuesday night | 3 - Low Risk |  |
Wednesday | 4 - Moderate Risk |  |
Health message for Toronto Downtown
- Current Air Quality Health Index:
3
- Calculated at 12:00 pm EDT Tuesday, September 2, 2025
- Risk: Low
At-risk population:
General population:
- Ideal air quality for outdoor activities.
See the Ontario Ministry of the Environment, Conservation and Parks air quality health messages.
Note: AQHI readings on this web page are based on automatically polled data and have not undergone final verification.