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

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 ...

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

Earlier, Grap-3 restrictions were reimposed in Delhi after the city's AQI dropped to 'severe' level on Wednesday (January 29) ...

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 ...

The data set: The data are collected as part of the Atmospheric Science and Measurement Network (ASCENT for short), which monitors air quality at sites across the country. You can see the data set for ...

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

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