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Primary air pollutant in the Markham area:
OZONE - 35 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 34 Good
PM10 - 20 Good
Primary Pollutant: PM2.5 - 0 Moderate
Secondary Pollutant: OZONE - 0 Good
Primary Pollutant: PM2.5 - 0 Moderate
Secondary Pollutant: OZONE - 0 Good
Primary Pollutant: PM2.5 - 0 Moderate
Secondary Pollutant: OZONE - 0 Good