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Port St. Laurent Air Quality Health Index (AQHI)
Health Canada & Environment and Climate Change Canada official environmental metrics
Current Air Quality Category
3
Low Risk
Canadian AQHI Scale (1 to 10+)
Ideal air quality for outdoor Canadian activities and sports.
At-Risk Population
Enjoy your usual outdoor activities. Ideal conditions for individuals with heart or breathing issues.
General Population
Ideal air quality for outdoor sports, recreation, and work in Port St. Laurent.
Fine Particulate (PM2.5)
3.2 µg/m³
Well below health threshold
Particulate Matter (PM10)
3.5 µg/m³
Normal background levels
Ground-Level Ozone (O3)
61 ppb
Photochemical balance
Nitrogen Dioxide (NO2)
0 ppb
Traffic emission index