Air Stagnation Advisory
Status
Event Continued Active alertStart Time
Sun 01/11/2026 03:04 PM ESTEnd Time
Fri 01/16/2026 07:00 AM ESTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Boise, ID ∙ Nampa, ID ∙ Meridian, ID ∙ Richland, OR ∙ Murphy, ID ∙ Mccall Airport, ID ∙ King Hill, ID ∙ Deardorff Mountain, OR ∙ Cascade, ID ∙ Tuttle, IDFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Boise ID 104 PM MST Sun Jan 11 2026 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 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...Portions of south central and southwest Idaho and northeast and southeast Oregon. * WHEN...Until 5 AM MST /4 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.
Technical Header
IDZ011>014-016-028-033-ORZ061>064-122100- /O.CON.KBOI.AS.Y.0001.000000T0000Z-260116T1200Z/ West Central Mountains-Lower Treasure Valley-Boise Mountains- Upper Treasure Valley-Western Magic Valley-Camas Prairie-Upper Weiser River-Harney County-Baker County-Malheur County-Oregon Lower Treasure Valley- Including the cities of Cascade, Venator, Pine, Boise, Cambridge, Burns, Baker, New Princeton, Fruitvale, Selby, Mesa, Nampa, Dunnean, Goodrich, Nyssa, Corral, Fairfield, Diamond, McCall, Ontario, Soldier, Ola, Blaine, Buchanan, Caldwell, Twin Falls, Indian Valley, Crane, Big Creek, Glendale, Malheur City, Council, Anderson Dam, Prairie, Hill City, Bear, Cuprum, and Warm Lake 104 PM MST Sun Jan 11 2026 /1204 PM PST Sun Jan 11 2026/
