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Primary air pollutant in the Downey area:
PM2.5 - 57 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 - 31 Good
OZONE - 6 Good
Primary Pollutant: PM2.5 - 58 Moderate
Secondary Pollutant: PM10 - 31 Good
Secondary Pollutant: OZONE - 30 Good
Secondary Pollutant: CO - 24 Good
Secondary Pollutant: NO2 - 41 Good
Primary Pollutant: PM2.5 - 66 Moderate
Secondary Pollutant: PM10 - 22 Good
Secondary Pollutant: OZONE - 25 Good
Secondary Pollutant: CO - 23 Good
Secondary Pollutant: NO2 - 42 Good