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

Erin Davis/Axios Visuals Air quality in Salt Lake City is getting worse, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to our health. By the ...

Certain factors impact how long it takes for you to cross that finish line, but what about the air quality? Recently, researchers conducted a study to find out. The post Does the air quality really ...

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

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

Doctors from National Jewish Health talk about how to know if you’re at risk, and steps you can take to protect your heart ...

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily more accurate.

Those groups particularly sensitive to particulate matter in the air may want to limit time outside Friday and Saturday.