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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. 2 UV
excellent
18.0 AQI
excellent
18.0 AQI
Fill 2Created with Sketch.
15 °C
2 UV

Main pollutants

16.0
PM2.5
12.0
PM10
12.0
NO2
18.0
O3
  • outdoor sports
  • bring baby out
  • eating outside
The air is pure, ideal for outdoor activities!

Live air quality report and air quality forecast in San Mateo

16.0
PM2.5
12.0
PM10
12.0
NO2
18.0
O3

Annual Average 26 AQI
Days per year at this level

Main pollutants

AQI

  • 16.0
    PM2.5
  • 12.0
    PM10
  • 12.0
    NO2
  • 18.0
    O3

µg/m³

  • 4
    PM2.5
  • 8
    PM10
  • 5
    NO2
  • 18.0
    O3
our sources

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