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 night
Saturday
Saturday night
Sunday
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...?
People with asthma are more affected by exposure to air pollution - such as diesel exhaust - than others.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

Observed ConditionsFootnote †
2 - Low Risk
Calculated at:
4:00 AM EDT Saturday 2 July 2022
Forecast Maximums
Issued at:
5:00 PM EDT Friday 1 July 2022
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
What we are doing
Weather Forecasts
Weather Alerts
Weather Resources
Features
WeatherCAN app: set custom notifications

Learn how to set custom Air Quality Health Index notifications on the WeatherCAN app
- Date modified: