Air Stagnation Advisory issued January 26 at 1:30AM MST until January 31 at 9:00AM MST by NWS Boise ID

* WHAT…An extended period of stagnant air, with light winds and
little vertical mixing. This is due to an inversion near the
surface that can trap pollutants.

* WHERE…Portions of south central, southwest, and west central
Idaho and northeast and southeast Oregon.

* WHEN…From 11 AM MST /10 AM PST/ this morning to 9 AM MST /8 AM
PST/ Friday.

* IMPACTS…Poor air quality may cause issues for people with
respiratory problems.