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  4. San Mateo County

San Mateo County

California

2024-12-22 07:00
AQI (China)
Excellent
Pollutants|Pollens
NO2
μg/m³
24.8
O3
μg/m³
28.5
PM2.5
μg/m³
3.2
CO
μg/m³
370.8
SO2
μg/m³
1.1
Weather
  • ℃
  • ℉
12℃
95%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (China)
  • Pollen
  • NO2
  • O3
  • PM2.5
  • CO
  • SO2
Places included
Atherton
AQI 11
Belmont
AQI 11
Brisbane
AQI 20
Broadmoor
AQI 20
Burlingame
AQI 11
Colma
AQI 20
Daly City
AQI 20
East Palo Alto
AQI 11
El Granada
AQI 11
Emerald Hills
AQI 11
Foster City
AQI 11
Half Moon Bay
AQI 11
Highlands-Baywood Park
AQI 11
Hillsborough
AQI 11
La Honda
AQI 11
Menlo Park
AQI 11
Millbrae
AQI 20
Montara
AQI 20
Moss Beach
AQI 11
North Fair Oaks
AQI 11
Pacifica
AQI 20
Pescadero
AQI 11
Portola Valley
AQI 11
Redwood City
AQI 11
San Bruno
AQI 20
San Carlos
AQI 11
San Mateo
AQI 11
South San Francisco
AQI 20
West Menlo Park
AQI 11
Woodside
AQI 11
Data Sources
http://www.airnow.gov/

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Cities Nearby

Half Moon Bay
AQI 11
El Granada
AQI 11
Highlands-Baywood Park
AQI 11
Emerald Hills
AQI 11
Woodside
AQI 11
Moss Beach
AQI 11
Belmont
AQI 11
San Carlos
AQI 11
Redwood City
AQI 11
Portola Valley
AQI 11
Hillsborough
AQI 11