Air Stagnation Advisory issued December 13 at 2:47AM MST until December 13 at 2:00PM 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 southeast
Oregon.

* WHEN…Until 2 PM MST this afternoon.

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