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Primary air pollutant in the West Covina area:
OZONE - 44 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 3 Good
PM10 - 6 Good
Primary Pollutant: PM2.5 - 50 Good
Secondary Pollutant: NO2 - 33 Good
Secondary Pollutant: OZONE - 48 Good
Secondary Pollutant: CO - 9 Good
Secondary Pollutant: PM10 - 28 Good