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Primary air pollutant in the Thornton area:
PM2.5 - 39 Good
Enjoy your outdoor activities.
Primary Pollutant: PM2.5 - 54 Moderate
Secondary Pollutant: OZONE - 31 Good
Primary Pollutant: PM2.5 - 47 Good
Secondary Pollutant: OZONE - 33 Good
Primary Pollutant: PM2.5 - 42 Good
Secondary Pollutant: OZONE - 31 Good