At 1:06 p.m. on Wednesday, the National Weather Service released an air stagnation advisory in effect until 4 p.m. for Central Douglas County, Eastern Curry County and Josephine County, Eastern Douglas County Foothills, Klamath Basin, Northern and Eastern Klamath County and Western Lake County and Central and Eastern Lake County as well as Jackson County.

The weather service states to anticipate, "Poor air quality will persist this afternoon. This is due to an inversion and stagnant air conditions near the surface that will trap pollutants."

News Source : https://www.oregonlive.com/weather-alerts/2025/12/air-stagnation-advisory-in-place-for-oregon-early-wednesday-evening.html