Hamilton West - Air Quality Health Index
4Moderate Risk
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.
Monday night
Tuesday
Tuesday night
Wednesday
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...?
Air pollution makes asthma symptoms worse, such as coughing, wheezing, tightness in the chest and shortness of breath.
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

Observed ConditionsFootnote †
4 - Moderate Risk
Calculated at:
6:00 PM EST Monday 16 February 2026
Forecast Maximums
Issued at:
5:03 PM EST Monday 16 February 2026
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
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- Date modified: