Sarnia - Air Quality Health Index

Calculated at: 7:00 AM EDT Tuesday 8 July 2025

2Low Risk




1
2
3
4
5
6
7
8
9
10
+

Low Risk
(1-3)

Moderate Risk
(4-6)

High Risk
(7-10)

Very High Risk



At-Risk Population:

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.