More than 25,000 residents in three provinces have been evacuated as dozens of wildfires remained active Sunday and diminished air quality in parts of Canada and the U.S.

Rain lashes parts of Delhi, brings respite from heat; Unruly Air India flyer held at Delhi airport; Minor quake of 2.8 hits ...

As global temperatures rise, these overlapping events are turning local air pollution into transcontinental threats.

Climatologists are telling us that the central and eastern U.S. states are in for a long, hot and smoky summer because of ...

Smoke poured over the Canadian border into eastern Alaska this weekend, bringing poor air quality to communities from ...

North Dakota’s summer evenings usually smell of cut hay. On June 11, the scent was more like a campfire you couldn’t outrun. By noon the EPA’s Air Quality ...

Alberta Wildfire is hopeful that rain and cooler weather in the coming days will help firefighting efforts. Most of the province is expected to receive some amount of precipitation over the next few ...

What does PM2.5 mean on the air quality index? This unit is used to measure the fine particulate matter in the air, such as, smoke, dust, soot or dirt. The "2.5" figure means particles are 2.5 ...

Officials issue an air quality advisory for counties in southwest Michigan as Canadian wildfires burn. Here's what the air ...

Air quality alerts are still in place on Tuesday, warning that children may experience "breathing difficulties." ...

ALBURGH, Vt. (WCAX) - Hazy and smoky skies from Canadian wildfires jacking up the Air Quality Index to unhealthy levels. The New York Department of Health, and the Department of Environmental ...

Air quality alerts remain in effect June 6 for Southeast Michigan 00:54. An air quality map shows conditions improving across the United States on Friday as smoke from the Canadian wildfires ...