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What substances make up the Alberta Air Quality Index (AQI)?

April 26, 2017air quality Alberta aqi index substances

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What substances make up the Alberta Air Quality Index (AQI)?

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The substances used to calculate the AQI are carbon monoxide, nitrogen dioxide, ozone, fine particulate matter (PM2.5) and sulphur dioxide. The index is calculated at air monitoring stations located in Calgary, Edmonton, Lethbridge, Red Deer, Grande Prairie, Medicine Hat, Fort Saskatchewan and Fort McMurray. The highest AQI of the five substances for a monitoring station is the AQI value for that hour.