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

Specialized air quality instruments captured a spike in lead, chlorine, and bromine pollution during the L.A. wildfires. As ...

An air quality alert was issued on Thursday at 3:31 p.m. in effect until Friday at 7:15 a.m. The alert is for Burke Mountains, Greater Burke, McDowell Mountains and Eastern McDowell as well as Yancey ...

An air quality alert was issued on Tuesday at 5:03 a.m. for Josephine County.

The Inland Northwest is stuck under a ridge of high-pressure and will stay under this ridge for the next several days.

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

The Oregon Department of Environmental Quality issued an air quality advisory for Eastern Lane, Eastern Linn, Eastern Marion, ...

Toxic smoke and dangerous particulate pollution are spreading far beyond the flames, leaving air quality at unhealthy levels ...

If you have been hearing about poor air quality in New York City Friday, you can breathe a deep sigh of relief (literally): ...

Even with thick smoke coming from the Hughes Fire, skies have been clear in many areas, and the air quality forecast has been ...

Poor outdoor air quality is a reality of modern life and pollutants can seep into your home, no matter how well-sealed you think it is. Pollutants like carbon monoxide, particulate matter ...