Toronto North - Air Quality Health Index

Observed ConditionsFootnote †

Calculated at: 6:00 AM EDT Wednesday 3 June 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 Wednesday 3 June 2026

Wednesday

4 - Moderate Risk

Wednesday night

4 - Moderate Risk

Thursday

4 - Moderate Risk

Thursday 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...?

Pollutants are absorbed into your bloodstream as you breathe, traveling throughout your body and starting a chemical chain reaction that can affect your heart and other organs.


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

AQHIScale

Observed ConditionsFootnote †


2 - Low Risk

Calculated at:

6:00 AM EDT Wednesday 3 June 2026

 

Forecast Maximums


Wednesday
4 - Moderate Risk



Wednesday night
4 - Moderate Risk



Thursday
4 - Moderate Risk



Thursday night
4 - Moderate Risk




Issued at:

6:00 AM EDT Wednesday 3 June 2026

 

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

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