Indoor air can be five times more polluted than outdoor air. I asked two experts about common causes of poor air quality in ...

It is going to become very smoky tonight and the air quality will possibly become unhealthy for everyone. This smoke will ...

Olympic and Mount Rainier national parks are among areas with closures as smoke from nearby wildfires makes the air quality ...

The agency aims to restructure regional haze reduction requirements, which aim to clamp down on industrial emissions that mar ...

On Monday at 3:48 p.m. an updated air quality alert was reported by the NWS Spokane WA in effect until Tuesday at noon. The ...

Air quality in Western Washington improved Sunday after wildfires in the Olympics and Cascades made skies smoky last week.

Hot, dry weather and wildfire smoke from out-of-state fires will contribute to lower air quality across the Front Range and ...