Multiple wildfires burning across Colorado consumed thousands of acres on Monday, and one fire in the San Juan National ...

"Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity," read ...

CLAIRTON, Pa. (AP) — An explosion at a U.S. Steel plant near Pittsburgh left one person dead and sent at least 10 to hospitals Monday and heavily damaged the sprawling facilty, with emergency workers ...

The Minnesota Pollution Control Agency extended an air quality alert for southeastern and northern Minnesota on Tuesday due to lingering ground-level smoke from the wildfires in Canada.

Poor air qualityLONG TERM: More humidity and stormsWAUSAU, Wis. (WSAW) - While not everyone will get rain on Tuesday, those ...