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  4. Washington County

Washington County

Oregon

2026-09-21 01:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
6.8
O3
μg/m³
70.7
NO2
μg/m³
6.2
CO
μg/m³
250
Weather
  • ℃
  • ℉
25℃
52%
11 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • NO2
  • CO
Places included
Aloha
AQI 37
Banks
AQI 28
Beaverton
AQI 37
Cedar Hills
AQI 37
Cornelius
AQI 28
Durham
AQI 50
Forest Grove
AQI 28
Garden Home-Whitford
AQI 37
Gaston
AQI 28
Hillsboro
AQI 37
King City
AQI 50
Metzger
AQI 37
North Plains
AQI 37
Raleigh Hills
AQI 37
Sherwood
AQI 50
Tigard
AQI 50
Tualatin
AQI 50
West Haven-Sylvan
AQI 29
Data Sources
http://www.airnow.gov/

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Cities Nearby

Forest Grove
AQI 28
Cornelius
AQI 28
Banks
AQI 28
Gaston
AQI 28
North Plains
AQI 37
Hillsboro
AQI 37
Aloha
AQI 37
Yamhill
AQI 28
Cedar Hills
AQI 37
Beaverton
AQI 37
West Haven-Sylvan
AQI 29