Active Weather Alerts
Air Stagnation Advisory
Issued: 8:36 AM Dec. 28, 2025 – National Weather Service
...AIR STAGNATION ADVISORY REMAINS IN EFFECT FROM 6 PM MST /5 PM PST/ THIS EVENING TO 10 AM MST /9 AM PST/ THURSDAY... * 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 northeast and southeast Oregon. * WHEN...From 6 PM MST /5 PM PST/ this evening to 10 AM MST /9 AM PST/ Thursday. * 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. &&
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