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  4. Alameda County

Alameda County

California

2026-05-23 15:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
62.7
PM2.5
μg/m³
4.1
PM10
μg/m³
21
NO2
μg/m³
9.5
CO
μg/m³
395.8
SO2
μg/m³
0.3
Weather
  • ℃
  • ℉
17℃
63%
10 kph
4 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • PM10
  • NO2
  • CO
  • SO2
Places included
Alameda
AQI 6
Albany
AQI 6
Berkeley
AQI 26
Castro Valley
AQI 28
Dublin
AQI 28
Emeryville
AQI 6
Fairview
AQI 28
Fremont
AQI 28
Hayward
AQI 29
Livermore
AQI 28
Newark
AQI 23
Oakland
AQI 31
Piedmont
AQI 28
Pleasanton
AQI 28
San Leandro
AQI 28
San Lorenzo
AQI 28
Sunol
AQI 28
Union City
AQI 28
Data Sources
http://www.airnow.gov/

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Cities Nearby

Livermore
AQI 28
Sunol
AQI 28
Pleasanton
AQI 28
Dublin
AQI 28
Fremont
AQI 28
Milpitas
AQI 39
Mountain House
AQI 39
East Foothills
AQI 39
Alum Rock
AQI 39
Union City
AQI 28
Blackhawk
AQI 28