Toronto North - Air Quality Health Index
Calculated at: 10:00 AM EST Tuesday 16 December 2025
4Moderate Risk
2
3
4
5
6
7
8
9
10
+
Moderate Risk
(4-6)
High Risk
(7-10)
Very High Risk
At-Risk Population:
- Consider reducing or rescheduling strenuous activities outdoors if you are experiencing symptoms.
- Find out if you are at risk
General Population:
- No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation.
Issued at: 6:00 AM EST Tuesday 16 December 2025
Tuesday
3
- Low Risk
Tuesday night
3
- Low Risk
Wednesday
2
- Low Risk
Wednesday night
3
- Low Risk
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, or your physician.
Visit the national AQHI Web site to learn more about the AQHI.
Did you know...?
You can reduce how much you drive by walking, biking, carpooling or taking public transit.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
