The advisories impact large areas of Idaho, Oregon, Montana and Washington, lasting through the end of January.

DEQ air monitoring stations showed "moderate" air quality across most of Portland Wednesday morning. It's expected to rapidly improve Thursday night.

The National Weather Service issued an air stagnation advisory at 11:44 a.m. on Monday in effect until Friday at 4 a.m. for Eastern Columbia River Gorge of Oregon, Lower Columbia Basin of Oregon, ...

PORTLAND, Ore. (KTVZ) -- The Oregon Department of Environmental Quality issued an air quality advisory Wednesday for Klamath County, southern Lake County, and La Pine due to stagnant air ...

A westerly wind pushed smoke mostly into central and eastern Oregon Thursday morning, and that trend should continue, Saltenberger said. Air quality was good across the length of western Oregon ...

La PINE, Ore. (KTVZ) —The Oregon Department of Environmental Quality issued an air quality advisory for La Pine Tuesday due to stagnant air conditions trapping smoke and other air pollutants ...

(KOIN weather cam) An air stagnation advisory is an effect for southern Oregon, where air quality is currently worse than Los Angeles. Areas of southern Oregon are experiencing worse air quality ...

The Air Quality Index measured 156 near Forks, Washington, and received a rating of "unhealthy," meaning some members of the general public may experience health effects and members of sensitive ...

Light winds and a lack of precipitation are exacerbating the situation, leading to deteriorating air quality. The advisory is in place for several regions in Idaho and Oregon: the West Central ...