Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
139 AM MST Tue Feb 3 2026

IDZ012-014-016-033-ORZ062>064-032200-
/O.EXT.KBOI.AS.Y.0002.000000T0000Z-260209T1200Z/
Lower Treasure Valley-Upper Treasure Valley-Western Magic Valley-
Upper Weiser River-Baker County-Malheur County-Oregon Lower
Treasure Valley-
Including the cities of Goodrich, Mesa, Glendale, Ontario, Nampa,
Boise, Malheur City, Cambridge, Baker, Indian Valley, Fruitvale,
Nyssa, Twin Falls, Caldwell, and Council
139 AM MST Tue Feb 3 2026 /1239 AM PST Tue Feb 3 2026/

...AIR STAGNATION ADVISORY NOW IN EFFECT UNTIL 5 AM MST /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...Portions of south central and southwest Idaho and
  northeast and southeast Oregon.

* WHEN...Until 5 AM MST /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