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  4. Washington County

Washington County

Oregon

2026-09-18 09:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
6.3
O3
μg/m³
45
NO2
μg/m³
8.2
CO
μg/m³
250
Weather
  • ℃
  • ℉
12℃
85%
5 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • NO2
  • CO
Places included
Aloha
AQI 34
Banks
AQI 37
Beaverton
AQI 34
Cedar Hills
AQI 34
Cornelius
AQI 37
Durham
AQI 45
Forest Grove
AQI 37
Garden Home-Whitford
AQI 34
Gaston
AQI 37
Hillsboro
AQI 22
King City
AQI 45
Metzger
AQI 34
North Plains
AQI 22
Raleigh Hills
AQI 34
Sherwood
AQI 45
Tigard
AQI 45
Tualatin
AQI 45
West Haven-Sylvan
AQI 24
Data Sources
http://www.airnow.gov/

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Cities Nearby

Forest Grove
AQI 37
Cornelius
AQI 37
Banks
AQI 37
Gaston
AQI 37
North Plains
AQI 22
Hillsboro
AQI 22
Aloha
AQI 34
Yamhill
AQI 37
Cedar Hills
AQI 34
Beaverton
AQI 34
West Haven-Sylvan
AQI 24