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Primary air pollutant in the Waterloo area:
OZONE - 28 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 24 Good
Primary Pollutant: PM2.5 - 53 Moderate
Secondary Pollutant: OZONE - 33 Good
Primary Pollutant: PM2.5 - 57 Moderate
Secondary Pollutant: OZONE - 31 Good