Sarnia - Air Quality Health Index
Calculated at: 3:00 PM EDT Friday 20 March 2026
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 EDT Friday 20 March 2026
Friday
3
- Low Risk
Friday night
3
- Low Risk
Saturday
3
- Low Risk
Saturday 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...?
Even modest increases in air pollution can cause small but measurable increases in the use of medication, emergency room visits, hospital admissions and premature death.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
