Toronto - Air Quality Health Index
2Low Risk
Moderate Risk
(4-6)
High Risk
(7-10)
Very High Risk
At-Risk Population:
- Enjoy your usual outdoor activities.
- Find out if you are at risk
General Population:
- Ideal air quality for outdoor activities.
Friday
Friday night
Saturday
Saturday night
Who is at risk?
People with heart and lung conditions are most affected by air pollution.
To find out if you are at risk, consult the health guide, your physician, or your local health authority.
Visit the national AQHI Web site to learn more about the AQHI.
Did you know...?
You can change your lifestyle to reduce air pollution levels: drive less, use energy more efficiently at home and make wise choices as a consumer.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

Observed ConditionsFootnote †
2 - Low Risk
Calculated at:
6:00 AM EDT Friday 13 June 2025
Forecast Maximums
Issued at:
6:00 AM EDT Friday 13 June 2025
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
- Date modified: