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

If you can improve the quality of the air you breathe, do it. Better air quality is the easiest way not to die, writes Dynomight. The essay is fascinating reading: "While most things that clearly ...

An air quality alert was issued on Friday at 12:06 p.m. in effect until Saturday at 12:15 p.m. The alert is for San ...

Data reviewed by Caltech scientists found spikes of lead, chlorine and bromine in the air after the Eaton fire started.

An air quality alert was issued on Friday at 12:07 p.m. in effect until Sunday at midnight. The alert is for Calabasas and ...

In response to multiple fires that impacted air quality across Los Angeles, the City Council voted Friday to request a report ...

Air quality worsened in the National Capital Region (NCR), with most of the regions remaining in the 'poor' or 'very poor' ...

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 ...

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

Maricopa and Pinal counties both failed to meet federal air quality standards and will now become part of an Arizona State ...

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

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