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Air quality in San Mateo, CA

Live air quality report and air quality forecast in San Mateo

live
9 °C Fill 2Created with Sketch. 0 UV
poor
92.0 AQI
poor
92.0 AQI
Fill 2Created with Sketch.
9 °C
0 UV

Main pollutants

92.0
PM2.5
38.0
PM10
51.0
NO2
2.0
O3
  • outdoor sports
  • bring baby out
  • eating outside
The air has reached a high level of pollution. Higher than the maximum limit for 24 hours established by WHO.

Live air quality report and air quality forecast in San Mateo

92.0
PM2.5
38.0
PM10
51.0
NO2
2.0
O3

Annual Average 26 AQI
Days per year at this level

Main pollutants

AQI

  • 92.0
    PM2.5
  • 38.0
    PM10
  • 51.0
    NO2
  • 2.0
    O3

µg/m³

  • 27
    PM2.5
  • 33
    PM10
  • 27
    NO2
  • 2.0
    O3
our sources

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