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  4. Washington County

Washington County

Oregon

2026-09-14 05:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
4.3
O3
μg/m³
45
NO2
μg/m³
14.4
CO
μg/m³
375
Weather
  • ℃
  • ℉
14℃
80%
2 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • NO2
  • CO
Places included
Aloha
AQI 23
Banks
AQI 23
Beaverton
AQI 25
Cedar Hills
AQI 23
Cornelius
AQI 23
Durham
AQI 28
Forest Grove
AQI 25
Garden Home-Whitford
AQI 23
Gaston
AQI 23
Hillsboro
AQI 23
King City
AQI 28
Metzger
AQI 23
North Plains
AQI 24
Raleigh Hills
AQI 23
Sherwood
AQI 28
Tigard
AQI 28
Tualatin
AQI 30
West Haven-Sylvan
AQI 19
Data Sources
http://www.airnow.gov/

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Cities Nearby

Forest Grove
AQI 25
Cornelius
AQI 23
Banks
AQI 23
Gaston
AQI 23
North Plains
AQI 24
Hillsboro
AQI 23
Aloha
AQI 23
Yamhill
AQI 23
Cedar Hills
AQI 23
Beaverton
AQI 25
West Haven-Sylvan
AQI 19