A coalition of environmental groups is suing the Environmental Protection Agency, alleging the agency missed a key deadline tied to a stricter national standard for soot pollution. The case could affect air quality protections across the Mountain West.

BILLINGS, Mont. -- Wildfire smoke accounted for up to half of all health-damaging small particle air pollution in the western U.S. in recent years as warming temperatures fueled more destructive blazes, according to a study released Monday. Even as ...

SAN DIEGO, Calif. — Record-setting wildfires are becoming a regular occurrence in the Western United States. It's a sobering trend that poses a threat to people across the country, as hazardous smoke pollutes the air. “Fires burn in California, or in ...

NEW YORK (PIX11) – If you smell smoke, see a haze, and feel some difficulty breathing you’re likely experiencing the effects of raging wildfires in Ocean County, New Jersey. Air quality alerts have been issued for New York City, New Jersey and Long ...

Experts and environmental groups highlight that individual and community choices—especially regarding wood stove use, vehicle emissions, and home ventilation—significantly impact indoor and outdoor air quality in the Eugene-Springfield,

The American Lung Association calls it a “grim indication of the deterioration of air quality nationwide”: Bangor, Maine, is the last city standing on all three of its “cleanest cities” lists.

Smoke was trapped over Intersate-4 in Seminole County, Friday morning. Experts give three tips on how to protect yourself from smoke inhalation.

The county earned a C in both 24-hour particle (soot) and ozone pollution (smog) in the report. They are the same grades it received last year.