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

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

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 ...

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

The national capital witnessed a thin layer of fog on Thursday morning while the AQI stood at 381 at 8 am. Delhi recorded a ...

With calm winds, smoggy conditions, and low mixing height contributing to the pollution surge, Delhi’s 24-hour average AQI ...

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 ...

Nearly two weeks after the Eaton fire forced Claire Robinson to flee her Altadena home, she returned, donning a white hazmat ...

An air stagnation advisory was issued by the National Weather Service on Thursday at 2:08 a.m. in effect until Friday at 4 ...

"We must record here that if the Commission finds that the AQI goes above 350, as a precautionary measure, Staqe-III measures will have to be immediately implemented. If the AQI crosses 400 on a given ...

Federal grants "are investments," a veteran researcher explains, and cutting them will endanger people's lives here and elsewhere.