Despite having three pollution hotspots, the Environmental Protection Agency says air quality in Northwest Arkansas is improving overall.

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

Over half of the 298 small streams, drains and piped inflows tested by Coastwatch around Ireland had nitrate concentrations ...

HHS climate staff were placed on leave Jan. 22, the day after Trump ordered the dismantlement of all diversity, equity and ...

Darigold's Chehalis facility was fined $249,500 by the U.S. Environmental Protection Agency (EPA) in September for allegedly violating the Clean Water Act multiple times between September 2018 and ...

Wildfires are tearing through thousands of acres in Los Angeles County in California, as strong Santa Ana winds stoke the blazes.

Even if you don't live in an area where wildfires are typical, it's important to know how to protect your health.

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

Parker Yamasaki covers arts and culture at The Colorado Sun as a Poynter-Koch Media and Journalism Fellow and former Dow ...

according to the EPA. According to nationwide Air Quality Index data maintained by USA TODAY, areas hit hardest include central LA county around Chinatown, West San Gabriel Valley near Pasadena ...