With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke from these flames.

Canadian wildfires smoke map: US air quality index from Canada fires What US states are affected by Canadian wildfire smoke? There are multiple states in the path of Canadian wildfire smoke.

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that the blazes will subside anytime soon.

Massive wildfires burning out of control in western and central Canada are forcing thousands to flee. The blazes are also sending hazardous smoke toward major cities in the United States.

With 174 active wildfires burning across Canada, several U.S. states are under air quality alerts due to the traveling smoke from these flames.

ABC News(NEW YORK) -- Several dozen wildfires burning in Canada have led local authorities to declare states of emergencies and forced thousands of people to evacuate. Now, they are expected to send s ...