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Air quality in San Mateo, CA

Live air quality report and air quality forecast in San Mateo

live
15 °C Fill 2Created with Sketch. 1 UV
fair
21.0 AQI
fair
21.0 AQI
Fill 2Created with Sketch.
15 °C
1 UV

Main pollutants

10.0
PM2.5
21.0
PM10
16.0
NO2
19.0
O3
  • outdoor sports
  • bring baby out
  • eating outside
The air is moderately polluted. Greater than the maximum limit established for one year by WHO. A long-term exposure constitutes a health risk.

Live air quality report and air quality forecast in San Mateo

10.0
PM2.5
21.0
PM10
16.0
NO2
19.0
O3

Annual Average 26 AQI
Days per year at this level

Main pollutants

AQI

  • 10.0
    PM2.5
  • 21.0
    PM10
  • 16.0
    NO2
  • 19.0
    O3

µg/m³

  • 2
    PM2.5
  • 16
    PM10
  • 7
    NO2
  • 19.0
    O3
our sources

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