Hamilton West - Air Quality Health Index
Calculated at: 5:00 PM EDT Monday 4 May 2026
3Low 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: 5:00 PM EDT Monday 4 May 2026
Monday night
4
- Moderate Risk
Tuesday
3
- Low Risk
Tuesday night
3
- Low Risk
Wednesday
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...?
Canadian motorists idle their vehicles about 5-10 minutes/day. If we stop idling, our air will be cleaner and we'll all breathe easier.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
