Home > USA > California > San Mateo County > Highlands
Primary air pollutant in the Highlands area:
PM2.5 - 20 Good
Enjoy your outdoor activities.
Other Pollutants:
OZONE - 19 Good
Primary Pollutant: OZONE - 41 Good
Primary Pollutant: OZONE - 46 Good
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good