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

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.

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

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching all the way to Europe.

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

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

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

Smoke from Canadian wildfires has begun to reach as far as Europe as the large and intense flames continue to threaten health ...

Wildfires burning in Canada's oil-producing province of Alberta have affected more than 344,000 barrels per day of oil sands production, or about 7% of the country's overall crude oil output, ...

Over 100 Canadian wildfires are impacting air quality in several U.S. states. Minneapolis and St. Cloud, Minnesota, are experiencing "very unhealthy" air quality levels. Smoke from the fires is ...