Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air.

Air quality alerts have been issued across most of the Midwest, and hundreds of wildfires are burning across Canada.

Smoke from Canadian wildfires has sent a blanket of smoke over the midwestern United States this weekend. The National ...

The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

Wildfire smoke from Canada is blanketing the skies in the Midwest, leaving millions with dangerous breathing conditions.

Chicago was listed as the worst air quality in the world for part of Aug. 1 because of smoke from the fires blowing southeast ...

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian ...

Minneapolis faced severely degraded air quality, ranking among the worst globally due to smoke drifting from Canadian ...

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

Chicago's Air Quality Alert continues due to Canadian wildfire smoke, with health advisories for sensitive groups amidst ...