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  4. Washington County

Washington County

Oregon

2026-09-17 02:00
AQI (US)
Good
Pollutants|Pollens
O3
μg/m³
55.7
PM2.5
μg/m³
4.3
NO2
μg/m³
22.6
CO
μg/m³
500
Weather
  • ℃
  • ℉
21℃
54%
7 kph
0 of 11
Historical Data
  • Hourly
  • Daily
  • AQI (US)
  • Pollen
  • O3
  • PM2.5
  • NO2
  • CO
Places included
Aloha
AQI 23
Banks
AQI 21
Beaverton
AQI 23
Cedar Hills
AQI 23
Cornelius
AQI 21
Durham
AQI 30
Forest Grove
AQI 21
Garden Home-Whitford
AQI 23
Gaston
AQI 21
Hillsboro
AQI 22
King City
AQI 30
Metzger
AQI 23
North Plains
AQI 22
Raleigh Hills
AQI 23
Sherwood
AQI 30
Tigard
AQI 30
Tualatin
AQI 30
West Haven-Sylvan
AQI 20
Data Sources
http://www.airnow.gov/

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Cities Nearby

Forest Grove
AQI 21
Cornelius
AQI 21
Banks
AQI 21
Gaston
AQI 21
North Plains
AQI 22
Hillsboro
AQI 22
Aloha
AQI 23
Yamhill
AQI 21
Cedar Hills
AQI 23
Beaverton
AQI 23
West Haven-Sylvan
AQI 20