Sarnia - Air Quality Health Index
Calculated at: 11:00 AM EDT Saturday 26 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 Saturday 26 July 2025
Saturday
3
- Low Risk
Saturday night
3
- Low Risk
Sunday
3
- Low Risk
Sunday 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...?
High levels of air pollution can trigger or worsen asthma attacks. Asthma is the #1 cause of hospital admissions among children.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
