This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

WHICH U.S. CITIES HAVE THE DIRTIEST AIR? 2024 STATE OF THE AIR REPORT RANKS THEM The United States' Environmental Protection ...

The EPA measures regional air quality index (AQI) by how hazardous it is to the general public. Discover the AQI in your city by searching below.

Pruitt recommends that everyone keep an eye on the air quality forecasts in their area as well as a few tips on bad air ...

The worst air quality in the United States can be found in West Michigan Saturday as dust moves overhead. The same strong ...

We believe quality journalism should be available to everyone, paid for by those who can afford it. The State Department is shutting down its air quality monitoring program after over a decade of ...

The US government will stop sharing air quality data gathered from its embassies and consulates, worrying local scientists and experts who say the effort was vital to monitor global air quality and ...

Depending on the different pollutants in the air, like pollen or wildfire smoke, some days can be easier to breathe than ...

Topeka was among areas in northeast Kansas seeing elevated air quality concerns Tuesday, according to the Environmental Protection Agency.

Knoxville's mountainous skyline is covered in a hazy layer of smoke Wednesday, March 12. Air quality in the region is considered unhealthy for "sensitive groups," according to the Knox County ...