Idaho Smoke Map

Idaho Smoke Map Legend

**(Preliminary Data Warning: Data found on the map shown below is preliminary and is subject to change. Data is in local standard time format - no adjustment for daylight savings time.)

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Wednesday, September 2, 2026

Good dispersion conditions on the way

Near-surface smoke will remain relatively limited across much of Idaho today as strong south to southwesterly flow and increasingly unsettled weather provides good dispersion. Areas of light smoke and haze will persist across portions of North and Central Idaho, with moderate concentrations near active wildfires. Across South Idaho, much of the Snake River Plain and East Idaho will remain relatively clear. A plume of smoke extending northward from California and southeast Oregon will continue affecting portions of southwest Idaho this afternoon, with mainly light to moderate concentrations. 

Overnight into Thursday morning, strengthening southwesterly flow and increasing precipitation will continue dispersing and transporting smoke northeastward. The plume across southwest Idaho will weaken considerably, leaving mainly light smoke across portions of southwest and south-central Idaho. Light smoke will remain scattered across North and Central Idaho, although increased concentrations may persist near active wildfires. Much of the state should be relatively free of widespread near-surface smoke by Thursday morning.

On Thursday, widespread showers, embedded thunderstorms, and breezy southwesterly winds will provide very good smoke dispersion across much of Idaho. The RRFS shows little widespread near-surface smoke remaining across North and Central Idaho, with impacts becoming increasingly confined to active wildfires and immediately downwind areas. Some light smoke transported northeastward from the Great Basin may pass through portions of South and East Idaho, but significant accumulation is not expected. Localized smoke impacts will remain possible near active wildfires, but overall air quality should improve as cooler, wetter, and breezy conditions continue. The highest AQI levels are expected near active wildfires, where periods of UNHEALTHY FOR SENSITIVE GROUPS air quality are possible.


RRFS Near Surface Smoke initialized 06Z (12 a.m. MDT) 2 September 2026 and valid at 6 p.m. MDT 2 September 2026 

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