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  4. Washington County

Washington County

Oregon

2026-09-15 22:00
AQI (US)
Good
Pollutants|Pollens
PM2.5
μg/m³
5.3
O3
μg/m³
53.6
NO2
μg/m³
12.3
CO
μg/m³
375
Weather
  • ℃
  • ℉
20℃
57%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • PM2.5
  • O3
  • NO2
  • CO
Places included
Aloha
AQI 30
Banks
AQI 18
Beaverton
AQI 30
Cedar Hills
AQI 30
Cornelius
AQI 18
Durham
AQI 42
Forest Grove
AQI 18
Garden Home-Whitford
AQI 30
Gaston
AQI 18
Hillsboro
AQI 29
King City
AQI 42
Metzger
AQI 30
North Plains
AQI 29
Raleigh Hills
AQI 30
Sherwood
AQI 42
Tigard
AQI 42
Tualatin
AQI 42
West Haven-Sylvan
AQI 21
Data Sources
http://www.airnow.gov/

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Cities Nearby

Forest Grove
AQI 18
Cornelius
AQI 18
Banks
AQI 18
Gaston
AQI 18
North Plains
AQI 29
Hillsboro
AQI 29
Aloha
AQI 30
Yamhill
AQI 18
Cedar Hills
AQI 30
Beaverton
AQI 30
West Haven-Sylvan
AQI 21