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  4. San Mateo County

San Mateo County

California

2025-12-29 07:00
CAQI (Europe)
Very Low
Pollutants|Pollens
PM2.5
μg/m³
7.5
NO2
μg/m³
21.4
O3
μg/m³
15
CO
μg/m³
500
Weather
  • ℃
  • ℉
8℃
72%
13 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • CAQI (Europe)
  • Pollen
  • PM2.5
  • NO2
  • O3
  • CO
Places included
Atherton
AQI 15
Belmont
AQI 15
Brisbane
AQI 7
Broadmoor
AQI 7
Burlingame
AQI 15
Colma
AQI 7
Daly City
AQI 7
East Palo Alto
AQI 15
El Granada
AQI 15
Emerald Hills
AQI 15
Foster City
AQI 15
Half Moon Bay
AQI 15
Highlands-Baywood Park
AQI 15
Hillsborough
AQI 15
La Honda
AQI 15
Menlo Park
AQI 15
Millbrae
AQI 7
Montara
AQI 7
Moss Beach
AQI 15
North Fair Oaks
AQI 15
Pacifica
AQI 7
Pescadero
AQI 15
Portola Valley
AQI 15
Redwood City
AQI 15
San Bruno
AQI 7
San Carlos
AQI 15
San Mateo
AQI 15
South San Francisco
AQI 7
West Menlo Park
AQI 15
Woodside
AQI 15
Data Sources
http://www.airnow.gov/

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Cities Nearby

Half Moon Bay
AQI 15
El Granada
AQI 15
Highlands-Baywood Park
AQI 15
Emerald Hills
AQI 15
Woodside
AQI 15
Moss Beach
AQI 15
Belmont
AQI 15
San Carlos
AQI 15
Redwood City
AQI 15
Portola Valley
AQI 15
Hillsborough
AQI 15