Weather Warnings for Idaho

Issued by the National Weather Service

Current watches, warnings, and advisories for Idaho
Alerts Updated: December 31, 2025, 1:54 pm  UTC


Special Weather Statement issued December 31 at 5:54AM PST by NWS Spokane WA

Summary: Areas of dense fog will produce localized visibilities of a quarter mile along Interstate 90 around Coeur dAlene. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Severity:  Moderate    Effective:  December 31, 2025, 5:54 am      Expires:  December 31, 2025, 8:00 am
Area:  Coeur d'Alene Area


Air Stagnation Advisory issued December 31 at 4:30AM MST until January 3 at 8:00AM MST by NWS Boise ID

Summary: * 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 southwest Idaho and southeast Oregon. * WHEN...Until 8 AM MST /7 AM PST/ Saturday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.
Severity:  Moderate    Effective:  December 31, 2025, 4:30 am      Expires:  December 31, 2025, 3:00 pm
Area:  West Central Mountains; Lower Treasure Valley; Boise Mountains; Upper Treasure Valley; Camas Prairie; Upper Weiser River; Harney County; Malheur County; Oregon Lower Treasure Valley


Air Stagnation Advisory issued December 29 at 11:45AM PST until January 1 at 12:00PM PST by NWS Spokane WA

Summary: * WHAT...Stagnant conditions will have potential to trap pollutants near the ground with deteriorated air quality. * WHERE...Portions of North and North Central Idaho and North Central, Northeast, and Southeast Washington. * WHEN...Until noon PST Thursday. * IMPACTS...Periods of air stagnation can lead to the buildup of pollutants near the surface.
Severity:  Moderate    Effective:  December 29, 2025, 11:45 am      Expires:  January 1, 2026, 12:00 pm
Area:  Central Panhandle Mountains; Lewiston Area; Lewis and Southern Nez Perce Counties; Lower Garfield and Asotin Counties; Spokane Area; Northeast Mountains; Okanogan Highlands; Wenatchee Area; Okanogan Valley; Central Chelan County; Western Chelan County; Western Okanogan County


Air Stagnation Advisory issued December 29 at 11:23AM PST until January 1 at 12:00PM PST by NWS Missoula MT

Summary: * WHAT...Stagnation conditions will trap pollutants, leading to deteriorating air quality. * WHERE...Lower Hells Canyon/Salmon River Region, Orofino/Grangeville Region, Southern Clearwater Mountains, and Northern Clearwater Mountains. * WHEN...Until noon PST Thursday. * IMPACTS...Periods of air stagnation can lead to the build up of pollutants near the surface.
Severity:  Moderate    Effective:  December 29, 2025, 11:23 am      Expires:  January 1, 2026, 12:00 pm
Area:  Northern Clearwater Mountains; Southern Clearwater Mountains; Orofino/Grangeville Region; Lower Hells Canyon/Salmon River Region