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Primary air pollutant in the San Marino area:
PM2.5 - 55 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 - 29 Good
OZONE - 6 Good
Primary Pollutant: PM2.5 - 39 Good
Secondary Pollutant: PM10 - 26 Good
Secondary Pollutant: OZONE - 31 Good
Secondary Pollutant: CO - 7 Good
Secondary Pollutant: NO2 - 39 Good
Primary Pollutant: PM2.5 - 56 Moderate
Secondary Pollutant: PM10 - 24 Good
Secondary Pollutant: OZONE - 30 Good
Secondary Pollutant: CO - 8 Good
Secondary Pollutant: NO2 - 34 Good