Active Weather Alerts
Air Stagnation Advisory
Issued: 8:35 AM Jan. 31, 2026 – National Weather Service
...AIR STAGNATION ADVISORY IN EFFECT FROM 5 AM MST /4 AM PST/ EARLY THIS MORNING TO 11 AM MST /10 AM PST/ FRIDAY... * 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...Lower Treasure Valley Zones, and Upper Weiser River. * WHEN...From 5 AM MST /4 AM PST/ early this morning to 11 AM MST /10 AM PST/ Friday. * 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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