Air Stagnation Advisory

URGENT - WEATHER MESSAGE
National Weather Service Boise ID
1223 AM MST Mon Feb 2 2026

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