St. John's - Air Quality Health Index

Observed ConditionsFootnote †

Calculated at: 4:30 PM NDT Monday 18 May 2026

1Low 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 NDT Monday 18 May 2026

Monday

2 - Low Risk

Monday night

2 - Low Risk

Tuesday

2 - Low Risk

Tuesday 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...?

Carbon dioxide emissions from international aviation have increased 83% since 1990.


The AQHI is an initiative between Environment Canada, Health Canada, the Department of Environment and Climate Change, and the Department of Health and Community Services of Newfoundland and Labrador.

AQHIScale

Observed ConditionsFootnote †


1 - Low Risk

Calculated at:

4:30 PM NDT Monday 18 May 2026

 

Forecast Maximums


Monday
2 - Low Risk



Monday night
2 - Low Risk



Tuesday
2 - Low Risk



Tuesday night
2 - Low Risk




Issued at:

6:00 AM NDT Monday 18 May 2026

 

The AQHI is an initiative between Environment Canada, Health Canada, the Department of Environment and Climate Change, and the Department of Health and Community Services of Newfoundland and Labrador.

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