Toronto - Air Quality Health Index

ORANGE WARNING - AIR QUALITY

Observed ConditionsFootnote †

Calculated at: 11:00 AM EDT Friday 17 July 2026

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.

Forecast Maximums

Issued at: 6:00 AM EDT Friday 17 July 2026

Friday

10+ - Very High Risk

Friday night

10 - High Risk

Saturday

10 - High Risk

Saturday night

6 - 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, your physician, or your local health authority.

Visit the national AQHI Web site to learn more about the AQHI.

Did you know...?

It's a good idea to reschedule outdoor activities on high pollution days.


The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

ORANGE WARNING - AIR QUALITY
AQHIScale

Observed ConditionsFootnote †


2 - Low Risk

Calculated at:

11:00 AM EDT Friday 17 July 2026

 

Forecast Maximums


Friday
10+ Very High Risk



Friday night
10 - High Risk



Saturday
10 - High Risk



Saturday night
6 - Moderate Risk




Issued at:

6:00 AM EDT Friday 17 July 2026

 

The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.

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