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

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

Chicago had the worst air quality in the world for a few hours Thursday, thanks to smoke from Canadian wildfires.

When wildfires burn, the smoke can travel long distances and degrade air quality far away, which presents risks for those ...

Most of the Chicago area remains under an Air Quality Alert on Saturday due to smoke from Canadian wildfires. The alert was, at one point, set to expire late Friday night for most of the area, but it ...

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