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Home Return to list Air Stagnation Advisory 0003 Issued by the Boise Forecast Office
Action: New Issued At: 2026-02-06 03:14:08 403 WWUS75 KBOI 060913 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 213 AM MST Fri Feb 6 2026 IDZ012-014-016-033-ORZ064-061715- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ /O.NEW.KBOI.AS.Y.0003.260206T1200Z-260209T0600Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Nampa, Indian Valley, Caldwell, Nyssa, Council, Ontario, Twin Falls, Goodrich, Mesa, Boise, Glendale, Fruitvale, and Cambridge 213 AM MST Fri Feb 6 2026 /113 AM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IN EFFECT UNTIL 11 PM MST /10 PM PST/ SUNDAY... * 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 southeast Oregon. * WHEN...Until 11 PM MST /10 PM PST/ Sunday. * 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. && $$ ORZ063-061715- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ /O.NEW.KBOI.AS.Y.0003.260206T1200Z-260208T1800Z/ Malheur County- Including the cities of Malheur City 213 AM MST Fri Feb 6 2026 /113 AM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IN EFFECT UNTIL 11 AM MST /10 AM PST/ SUNDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Malheur County. * WHEN...Until 11 AM MST /10 AM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. && $$ ORZ062-061715- /O.CON.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ Baker County- Including the cities of Baker 113 AM PST Fri Feb 6 2026 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY... * 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...Baker County. * WHEN...Until 4 AM PST Monday. * 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. && $$ LC Action: New Issued At: 2026-02-06 03:14:08 403 WWUS75 KBOI 060913 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 213 AM MST Fri Feb 6 2026 IDZ012-014-016-033-ORZ064-061715- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ /O.NEW.KBOI.AS.Y.0003.260206T1200Z-260209T0600Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Nampa, Indian Valley, Caldwell, Nyssa, Council, Ontario, Twin Falls, Goodrich, Mesa, Boise, Glendale, Fruitvale, and Cambridge 213 AM MST Fri Feb 6 2026 /113 AM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IN EFFECT UNTIL 11 PM MST /10 PM PST/ SUNDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 11 PM MST /10 PM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. && $$ ORZ063-061715- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ /O.NEW.KBOI.AS.Y.0003.260206T1200Z-260208T1800Z/ Malheur County- Including the cities of Malheur City 213 AM MST Fri Feb 6 2026 /113 AM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IN EFFECT UNTIL 11 AM MST /10 AM PST/ SUNDAY... * 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...Malheur County. * WHEN...Until 11 AM MST /10 AM PST/ Sunday. * 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. && $$ ORZ062-061715- /O.CON.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ Baker County- Including the cities of Baker 113 AM PST Fri Feb 6 2026 ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST MONDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Baker County. * WHEN...Until 4 AM PST Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. && $$ LC Action: Continued Issued At: 2026-02-06 15:39:54 016 WWUS75 KBOI 062139 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 139 PM PST Fri Feb 6 2026 ORZ062-062245- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ Baker County- Including the cities of Baker 139 PM PST Fri Feb 6 2026 ...AIR STAGNATION ADVISORY IS CANCELLED... $$ ORZ063-062245- /O.CAN.KBOI.AS.Y.0003.000000T0000Z-260208T1800Z/ Malheur County- Including the cities of Malheur City 239 PM MST Fri Feb 6 2026 /139 PM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IS CANCELLED... $$ IDZ012-014-016-033-ORZ064-071000- /O.CON.KBOI.AS.Y.0003.000000T0000Z-260209T0600Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Ontario, Nampa, Glendale, Nyssa, Boise, Twin Falls, Caldwell, Cambridge, Mesa, Goodrich, Indian Valley, Council, and Fruitvale 239 PM MST Fri Feb 6 2026 /139 PM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST /10 PM PST/ SUNDAY... * 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 southeast Oregon. * WHEN...Until 11 PM MST /10 PM PST/ Sunday. * 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. && $$ KA Action: Cancelled Issued At: 2026-02-06 15:39:54 016 WWUS75 KBOI 062139 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 139 PM PST Fri Feb 6 2026 ORZ062-062245- /O.CAN.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/ Baker County- Including the cities of Baker 139 PM PST Fri Feb 6 2026 ...AIR STAGNATION ADVISORY IS CANCELLED... $$ ORZ063-062245- /O.CAN.KBOI.AS.Y.0003.000000T0000Z-260208T1800Z/ Malheur County- Including the cities of Malheur City 239 PM MST Fri Feb 6 2026 /139 PM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY IS CANCELLED... $$ IDZ012-014-016-033-ORZ064-071000- /O.CON.KBOI.AS.Y.0003.000000T0000Z-260209T0600Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Ontario, Nampa, Glendale, Nyssa, Boise, Twin Falls, Caldwell, Cambridge, Mesa, Goodrich, Indian Valley, Council, and Fruitvale 239 PM MST Fri Feb 6 2026 /139 PM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST /10 PM PST/ SUNDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 11 PM MST /10 PM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. && $$ KA Action: Time Extended Issued At: 2026-02-06 15:40:24 029 WWUS75 KBOI 062140 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 240 PM MST Fri Feb 6 2026 IDZ012-014-016-033-ORZ064-071000- /O.EXT.KBOI.AS.Y.0003.000000T0000Z-260208T1700Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Ontario, Nampa, Glendale, Nyssa, Boise, Twin Falls, Caldwell, Cambridge, Mesa, Goodrich, Indian Valley, Council, and Fruitvale 240 PM MST Fri Feb 6 2026 /140 PM PST Fri Feb 6 2026/ ...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 10 AM MST /9 AM PST/ SUNDAY... * 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 southeast Oregon. * WHEN...Until 10 AM MST /9 AM PST/ Sunday. * 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. && $$ KA Action: Continued Issued At: 2026-02-07 03:21:12 988 WWUS75 KBOI 070920 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 220 AM MST Sat Feb 7 2026 IDZ012-014-016-033-ORZ064-072200- /O.CON.KBOI.AS.Y.0003.000000T0000Z-260208T1700Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Nampa, Fruitvale, Nyssa, Boise, Ontario, Mesa, Indian Valley, Cambridge, Twin Falls, Caldwell, Glendale, Goodrich, and Council 220 AM MST Sat Feb 7 2026 /120 AM PST Sat Feb 7 2026/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST /9 AM PST/ SUNDAY... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 10 AM MST /9 AM PST/ Sunday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. && $$ CH Action: Continued Issued At: 2026-02-07 13:22:50 192 WWUS75 KBOI 071922 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 1222 PM MST Sat Feb 7 2026 IDZ012-014-016-033-ORZ064-081700- /O.CON.KBOI.AS.Y.0003.000000T0000Z-260208T1700Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Glendale, Caldwell, Indian Valley, Mesa, Cambridge, Boise, Nampa, Fruitvale, Twin Falls, Goodrich, Council, Nyssa, and Ontario 1222 PM MST Sat Feb 7 2026 /1122 AM PST Sat Feb 7 2026/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 10 AM MST /9 AM PST/ SUNDAY... * WHAT...High pressure aloft with light surface winds and little vertical mixing will continue the period of stagnant air through tomorrow morning. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Portions of south central and southwest Idaho and southeast Oregon. * WHEN...Until 10 AM MST /9 AM PST/ Sunday. * 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. && $$ SA Action: Cancelled Issued At: 2026-02-08 10:08:19 613 WWUS75 KBOI 081607 NPWBOI URGENT - WEATHER MESSAGE National Weather Service Boise ID 907 AM MST Sun Feb 8 2026 IDZ012-014-016-033-ORZ064-081715- /O.CAN.KBOI.AS.Y.0003.000000T0000Z-260208T1700Z/ Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley- Upper Weiser River-Oregon Lower Treasure Valley- Including the cities of Caldwell, Goodrich, Boise, Indian Valley, Nyssa, Fruitvale, Nampa, Ontario, Mesa, Council, Glendale, Cambridge, and Twin Falls 907 AM MST Sun Feb 8 2026 /807 AM PST Sun Feb 8 2026/ ...AIR STAGNATION ADVISORY IS CANCELLED... Better mixing is expected along with precipitation later today. $$ KA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||