One product issued by NWS for: Boise ID
Air Stagnation Advisory
URGENT - WEATHER MESSAGE National Weather Service Boise ID 1035 AM MST Sun Jan 18 2026 IDZ011>014-028-033-ORZ061>064-192200- /O.CON.KBOI.AS.Y.0001.000000T0000Z-260122T1800Z/ West Central Mountains-Lower Treasure Valley-Boise Mountains- Upper Treasure Valley-Camas Prairie-Upper Weiser River-Harney County-Baker County-Malheur County-Oregon Lower Treasure Valley- Including the cities of Crane, Fruitvale, Ola, Caldwell, Bear, Warm Lake, Prairie, Indian Valley, New Princeton, Mesa, Hill City, Dunnean, Malheur City, Soldier, Nampa, Boise, Baker, Cuprum, Pine, Selby, Venator, Buchanan, Big Creek, McCall, Cambridge, Goodrich, Diamond, Nyssa, Glendale, Cascade, Burns, Corral, Ontario, Blaine, Anderson Dam, Council, and Fairfield 1035 AM MST Sun Jan 18 2026 /935 AM PST Sun Jan 18 2026/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 AM PST/ THURSDAY... * 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 northeast and southeast Oregon. * WHEN...Until 11 AM MST /10 AM PST/ Thursday. * 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. && $$ JM