Weather Alerts For Boise, ID

URGENT - WEATHER MESSAGE National Weather Service Boise ID 1056 AM MST Thu Jan 15 2026 Upper Treasure Valley- Including the cities of Boise 1056 AM MST Thu Jan 15 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... * WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, 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...Upper Treasure Valley. * WHEN...For the Dense Fog Advisory, until 1 PM MST this afternoon. For the Air Stagnation Advisory, until 5 AM MST Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. 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. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&

URGENT - WEATHER MESSAGE National Weather Service Boise ID 1056 AM MST Thu Jan 15 2026 Upper Treasure Valley- Including the cities of Boise 1056 AM MST Thu Jan 15 2026 ...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST MONDAY... * WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, 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...Upper Treasure Valley. * WHEN...For the Dense Fog Advisory, until 1 PM MST this afternoon. For the Air Stagnation Advisory, until 5 AM MST Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. 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. If driving, slow down, use your headlights, and leave plenty of distance ahead of you. &&