Sarnia: Current Air Quality Health Index
Calculated at 11:00 am EDT Thursday, June 12, 2025
4

Low Risk
(1 - 3)
Moderate Risk
(4 - 6)
High Risk
(7 - 10)
Very High Risk
Forecast for Sarnia
- Forecast Air Quality Health Index maximums for Sarnia
- Issued at: 6:00 am EDT June 12, 2025
Forecast Air Quality Health Index maximums for Sarnia
Thursday | 3 - Low Risk |  |
Thursday Night | 3 - Low Risk |  |
Friday | 2 - Low Risk |  |
Health Message for Sarnia
- Current Air Quality Health Index:
4
- Calculated at 11:00 am EDT Thursday, June 12, 2025
- Risk: Moderate
At-Risk Population:
General Population:
- No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation.
See the Ontario Ministry of the Environment, Conservation and Parks Air Quality Health Messages.
Note: AQHI readings on this web page are based on automatically polled data and have not undergone final verification.