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Primary air pollutant in the Placentia area:
OZONE - 71 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Primary Pollutant: OZONE - 84 Moderate
Secondary Pollutant: PM2.5 - 58 Moderate
Secondary Pollutant: PM10 - 39 Good
Secondary Pollutant: CO - 3 Good
Secondary Pollutant: NO2 - 17 Good
Primary Pollutant: OZONE - 64 Moderate
Secondary Pollutant: PM2.5 - 60 Moderate
Secondary Pollutant: PM10 - 42 Good
Secondary Pollutant: CO - 2 Good
Secondary Pollutant: NO2 - 11 Good