Mississauga - Air Quality Health Index
Calculated at: 2:00 AM EST Tuesday 23 December 2025
2Low Risk
2
3
4
5
6
7
8
9
10
+
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.
Issued at: 5:00 PM EST Monday 22 December 2025
Monday night
4
- Moderate Risk
Tuesday
3
- Low Risk
Tuesday night
3
- Low Risk
Wednesday
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, your physician, or your local health authority.
Visit the national AQHI Web site to learn more about the AQHI.
Did you know...?
Air pollution levels can be high even in parks and rural areas.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
