Official air-quality results for Kyrene de la Sierra Elementary School show elevated levels of potentially harmful chemicals.

Winds could blow smoke from the Bear Gulch fire burning on the Olympic Peninsula, bringing the potential for unhealthy air ...

Ozone pollution in Portland, Gresham and other cities could reach unhealthy levels for sensitive groups Tuesday afternoon.

An air quality advisory has been issued for Mason County as the Bear Gulch Fire continues to burn north of Lake Cushman.

The Maine Department of Environmental Protection has issued an Air Quality Alert for communities along the Coast, Interior, ...

An air quality alert was reported by the National Weather Service on Tuesday at 12:17 p.m. in effect until 8 p.m. for ...

While not everyone will be impacted by air quality on Wednesday, those who have been sensitive to poor air quality this ...

OLYMPIC NATIONAL FOREST, Wash. — The Bear Gulch Fire within the Olympic National Forest and National Park has now prompted an ...

Researchers at The University of Alabama in Huntsville (UAH) have published a paper in Communications Earth & Environment that demonstrates for the first time that using data gathered on atmospheric ...

Poor air quality could keep tens of thousands of U.S. students out of school for weeks each year, according to new research from West Virginia University. The study, led by WVU doctoral student ...