WWUS75 KBOI 020723

NPWBOI



URGENT - WEATHER MESSAGE

National Weather Service Boise ID

1223 AM MST Mon Feb 2 2026



IDZ014-016-022200-

/O.EXA.KBOI.AS.Y.0002.000000T0000Z-260206T1800Z/

Upper Treasure Valley-Western Magic Valley-

Including the cities of Boise and Twin Falls

1223 AM MST Mon Feb 2 2026



...AIR STAGNATION ADVISORY IN EFFECT UNTIL 11 AM MST 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...Western Magic Valley and Upper Treasure Valley.



* WHEN...Until 11 AM MST 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.



&&



$$



IDZ012-033-ORZ064-022200-

/O.CON.KBOI.AS.Y.0002.000000T0000Z-260206T1800Z/

Lower Treasure Valley-Upper Weiser River-Oregon Lower Treasure

Valley-

Including the cities of Nyssa, Council, Caldwell, Nampa, Mesa,

Cambridge, Fruitvale, Ontario, Glendale, Indian Valley, and

Goodrich

1223 AM MST Mon Feb 2 2026 /1123 PM PST Sun Feb 1 2026/



...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST /10 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...Lower Treasure Valley Zones, and Upper Weiser River.



* WHEN...Until 11 AM MST /10 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.



&&



$$



JM