Air Stagnation Advisory

Locations Affected

Boise, ID ∙ Nampa, ID ∙ Meridian, ID ∙ Brogan, OR ∙ Emmett, ID ∙ Hagerman, ID ∙ Parma, ID ∙ Swan Falls, ID ∙ Twin Falls Sun Valley Regional Airport, ID ∙ Huston, ID

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Boise ID 240 PM MST Fri Feb 6 2026 ...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 10 AM MST /9 AM PST/ SUNDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 10 AM MST /9 AM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air.

---