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Primary air pollutant in the Stevenson Ranch area:
PM2.5 - 70 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:
OZONE - 20 Good
Primary Pollutant: OZONE - 151 Unhealthy
Secondary Pollutant: PM2.5 - 60 Moderate
Secondary Pollutant: PM10 - 33 Good
Secondary Pollutant: CO - 4 Good
Secondary Pollutant: NO2 - 27 Good
Primary Pollutant: OZONE - 136 Unhealthy for Sensitive Groups
Secondary Pollutant: PM2.5 - 56 Moderate
Secondary Pollutant: PM10 - 36 Good
Secondary Pollutant: CO - 4 Good
Secondary Pollutant: NO2 - 21 Good