Sarnia - Air Quality Health Index
Calculated at: 7:00 AM EDT Tuesday 8 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 Tuesday 8 July 2025
Tuesday
3
- Low Risk
Tuesday night
3
- Low Risk
Wednesday
4
- Moderate Risk
Wednesday night
4
- Moderate 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...?
Large, heavy vehicles like SUVs cause nearly twice as much pollution as small, subcompact cars.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
