Sudbury - Air Quality Health Index
Calculated at: 1:00 PM EDT Wednesday 9 July 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: 6:00 AM EDT Wednesday 9 July 2025
Wednesday
2
- Low Risk
Wednesday night
2
- Low Risk
Thursday
2
- Low Risk
Thursday night
2
- 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...?
Climate change results in more frequent and severe heat waves, which make smog and air pollution worse.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
