Home > USA > California > San Mateo County > Foster City
Primary air pollutant in the Foster City area:
PM2.5 - 8 Good
Enjoy your outdoor activities.
Primary Pollutant: OZONE - 42 Good
Primary Pollutant: OZONE - 38 Good
Primary Pollutant: OZONE - 37 Good
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good