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

More than 25,000 residents in three provinces have been evacuated as dozens of wildfires remained active Sunday and diminished air quality in parts of Canada and the U.S. Most of the evacuated residents were from Manitoba,

The Canadian province of Manitoba is grappling with massive wildfires. Approximately 20,000 people have been evacuated. Premier Wab Kinew urges caution as crews battle the fires on multiple fronts. What do you need to know?