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  4. San Mateo County

San Mateo County

California

2025-03-19 13:00
AQI (India)
Good
Pollutants|Pollens
O3
μg/m³
25.7
CO
μg/m³
375
NO2
μg/m³
11.5
PM2.5
μg/m³
2.9
Weather
  • ℃
  • ℉
5℃
87%
0 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (India)
  • Pollen
  • O3
  • CO
  • NO2
  • PM2.5
Places included
Atherton
AQI 4
Belmont
AQI 4
Brisbane
AQI 9
Broadmoor
AQI 9
Burlingame
AQI 4
Colma
AQI 9
Daly City
AQI 9
East Palo Alto
AQI 4
El Granada
AQI 4
Emerald Hills
AQI 4
Foster City
AQI 4
Half Moon Bay
AQI 4
Highlands-Baywood Park
AQI 4
Hillsborough
AQI 4
La Honda
AQI 4
Menlo Park
AQI 4
Millbrae
AQI 9
Montara
AQI 9
Moss Beach
AQI 4
North Fair Oaks
AQI 4
Pacifica
AQI 9
Pescadero
AQI 4
Portola Valley
AQI 4
Redwood City
AQI 26
San Bruno
AQI 9
San Carlos
AQI 4
San Mateo
AQI 4
South San Francisco
AQI 9
West Menlo Park
AQI 4
Woodside
AQI 4
Data Sources
http://www.airnow.gov/

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Cities Nearby

Half Moon Bay
AQI 4
El Granada
AQI 4
Highlands-Baywood Park
AQI 4
Emerald Hills
AQI 4
Woodside
AQI 4
Moss Beach
AQI 4
Belmont
AQI 4
San Carlos
AQI 4
Redwood City
AQI 26
Portola Valley
AQI 4
Hillsborough
AQI 4