Oregon Department of Environmental Quality, Coos, Lower Umpqua & Siuslaw Indians of Oregon. Current AQI; Forecast; AQI Loop; More Maps. - https://files.airnowtech.org/airnow/today/cur_aqi_wa_or. read more
The Willamette Valley has frequent inversions. Whenever this happens, any smoke in the area will settle down near ground level. In the colder months, most of this smoke probably comes from home heating. read more