A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

The ongoing Canadian wildfires have reportedly blanketed a third of the United States, affecting millions, with the National ...

Continued drifting of wildfire smoke from Canada and Alaska has prompted Bay Area air regulators to extend an air quality ...

Another large fire exacerbated by climate change is threatening the health of Chicagoans. Government officials issued an air pollution "action day" on Thursday.

Smoke from the Canadian wildfires continues to bring potentially dangerous air quality to parts of the northern U.S., with ...

Many fires burning across Canada, forcing evacuations and threatening air quality in the United States, cannot simply be put out, authorities and experts say.

Maps show where new plumes of smoke will cause hazy skies through the end of the week. Low-level smoke is forecast to spread eastward Wednesday across the Appalachians and into the Mid-Atlantic and ...

Environment and Climate Change Canada has issued warnings and special air quality statements due to wildfire smoke for areas just north of Edmonton all the way to the province's boundary with the ...

Dry conditions in Canada start a chain of events that exacerbates wildfires, injects plumes of smoke in the air and affects air quality in Milwaukee.

Air quality alerts stretch from Alberta to parts of northern Ontario, according to Environment and Climate Change Canada, with some U.S. states also seeing advisories.

With wildfire smoke looming over Ontario, Environment Canada has issued air quality watches and statements for a large ...