Home > USA > California > San Mateo County > Atherton
Primary air pollutant in the Atherton area:
PM2.5 - 54 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 - 1 Good
Primary Pollutant: OZONE - 54 Moderate
Primary Pollutant: OZONE - 67 Moderate
Primary Pollutant: OZONE - 0 Moderate
Primary Pollutant: OZONE - 0 Moderate
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good