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

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

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

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

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

The San Diego APCD has extended an air quality alert due to increased fine particle pollution from wildfire smoke for San ...

I’m very happy to say what we studied, what we expected and what we planned for is what seems to be happening,” the MTA’s ...

Missoula is under an Air Stagnation Advisory until Friday. But, what exactly does that mean? Let's learn more about ...

Researchers contributing to the ASCENT network of air quality sensors observed spikes in lead and chlorine downwind from the ...

In the wake of the Palisades and Eaton fires, concerns about air quality across the county have been on the rise.

Oregon DEQ issues air quality advisory for several counties due to air stagnation trapping smoke and pollutants.

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