Deadly and destructive wildfires erupt in the US each year, burning millions of acres and destroying thousands of homes. CNN is tracking the trends.

Wildfire smoke is made of a mix of pollutants, including fine and small particle pollution called PM2.5, one of the most ...

Canadian wildfire smoke is impacting air quality across Michigan and Metro Detroit. See a map. Check your air quality index.

Wildfires in Canada, the United States and Mexico often send smoke throughout the continent. Follow our latest coverage here.

Canadian wildfire smoke is affecting air quality across parts of the U.S. Here's who's at risk and how to protect yourself.