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Primary air pollutant in the Covina area:
PM2.5 - 62 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Other Pollutants:
PM10 - 42 Good
OZONE - 12 Good
Primary Pollutant: OZONE - 143 Unhealthy for Sensitive Groups
Secondary Pollutant: PM2.5 - 68 Moderate
Secondary Pollutant: PM10 - 32 Good
Secondary Pollutant: CO - 6 Good
Secondary Pollutant: NO2 - 32 Good
Primary Pollutant: OZONE - 172 Unhealthy
Secondary Pollutant: PM2.5 - 58 Moderate
Secondary Pollutant: PM10 - 34 Good
Secondary Pollutant: CO - 6 Good
Secondary Pollutant: NO2 - 33 Good