Peterborough - Air Quality Health Index
3Low Risk
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.
Saturday night
Sunday
Sunday night
Monday
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...?
You can visit the Idle-free Zone for great ideas on how to conserve energy and reduce emissions at www.idling.gc.ca
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

Observed ConditionsFootnote †
3 - Low Risk
Calculated at:
10:00 PM EDT Saturday 16 May 2026
Forecast Maximums
Issued at:
5:00 PM EDT Saturday 16 May 2026
The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.
Features
Colour-coded weather alerts
Learn more about weather alerting in Canada
- Date modified: