Air Stagnation Advisory in Southwest Idaho and Northeast Oregon Until Thursday
Air Stagnation Advisory in Southwest Idaho and Northeast Oregon Until Thursday
US · Published Jan 21, 2026
Air stagnation advisory in effect for southwest Idaho and northeast Oregon due to a surface inversion trapping pollutants.
Light winds and minimal vertical mixing expected to continue, worsening air quality until Thursday.
Residents, especially those with respiratory conditions, advised to limit outdoor activities and take precautions.
Advisory for southwest Idaho and northeast Oregon
An air stagnation advisory is in effect for parts of southwest Idaho and northeast and southeast Oregon. This advisory is due to an extended period of stagnant air caused by a surface inversion, which is trapping pollutants and leading to poor air quality. The advisory is set to remain in place until 11 AM MST (10 AM PST) on Thursday.
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