Air Stagnation Advisory issued January 9 at 1:15PM MST until January 10 at 11:00AM 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 will continue to trap pollutants.

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

* WHEN…Until 11 AM MST /10 AM PST/ Friday.

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