Home > USA > California > San Mateo County > Highlands
Primary air pollutant in the Highlands area:
OZONE - 29 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 4 Good
Primary Pollutant: OZONE - 37 Good
Primary Pollutant: OZONE - 36 Good
Primary Pollutant: OZONE - 0 Good
Primary Pollutant: OZONE - 0 Good