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

Even though the Palisades and Eaton fires are now mostly contained, the Santa Ana winds have led to new fires flaring up ...

Researchers contributing to the ASCENT network of air quality sensors observed spikes in lead and chlorine downwind from the Eaton Fire – and their measurements are now publicly available.

Poor air quality isn't always obvious, but it's a serious health issue affecting both our indoor and outdoor environment ...

The Air Quality Index (AQI) can tell you a lot about the health of the environment, but there are still measures you can take ...

Air purifiers are a great tool for improving your indoor air quality. You could also invest in a sensor just so you know what ...

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 ...

Air quality in Pittsburgh is improving, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to your health and has been a problem in Pittsburgh for ...

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

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

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): ...