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

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

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts ...

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

An air quality advisory is in effect until 12 a.m., Saturday, June 7, as Michigan continues to see effects of Canadian ...

As the climate changes, the far north is drying and warming, which means wildfires are getting bigger and more intense. The ...

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

Smoke will likely be an ongoing health hazard across North America for the next few months. Here's what to expect.

Parts of Canada are seeing some of their most unhealthy air yet, and the smoke is likely to move over the United States again ...

An upper-level low pressure system will draw south another thick plume of smoke from Canada. This will create another round ...

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

Even those nowhere near the wildfires are suffering as smoke swirls around Canada and wafts south, creating hazardous air quality all over the midwestern and eastern parts of the United States.