Canadian wildfires in Manitoba and Saskatchewan have prompted air quality alerts in Minnesota, Wisconsin and Michigan on Wednesday and Thursday as residents are advised to "limit prolonged or heavy ...

Smoke from a series of Canadian wildfires could reach New York City by Tuesday. Wildfire smoke is a complex mixture of gases, particles and water vapor that contains multiple pollutants that can get ...

Some residents of several major cities in the Midwest could face an increased risk of heart attack and stroke as smoke from Canadian wildfires continues to descend into the United States this week.