Chatham - Air Quality Health Index

Observed ConditionsFootnote †

Calculated at: 5:00 AM EST Wednesday 21 January 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 EST Wednesday 21 January 2026

Wednesday

2 - Low Risk

Wednesday night

2 - Low Risk

Thursday

2 - Low Risk

Thursday night

2 - 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...?

High levels of air pollution can trigger or worsen asthma attacks. Asthma is the #1 cause of hospital admissions among children.


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

AQHIScale

Observed ConditionsFootnote †


2 - Low Risk

Calculated at:

5:00 AM EST Wednesday 21 January 2026

 

Forecast Maximums


Wednesday
2 - Low Risk



Wednesday night
2 - Low Risk



Thursday
2 - Low Risk



Thursday night
2 - Low Risk




Issued at:

6:00 AM EST Wednesday 21 January 2026

 

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

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