State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is ...

Since the weekend, several major fires have been raging across Canada’s central and western provinces. The smoke from those fires is now drifting south across the U.S. border and is ...

A Newsweek map shows where smoke from hundreds of wildfires burning across Canada which have prompted mass evacuations could impact states in the U.S. Smoke and airborne pollutants can be ...

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 Chris Sims is a digital producer at IndyStar. Follow him on Twitter: @ChrisFSims.

To check your state's air quality, visit AirNow's website, and plug in your zip code, city or state. Here's what to know as of Wednesday, June 4.