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

Thick smoke from Canadian wildfires has smothered the Midwest, pushing air quality to unhealthy “red” levels in Iowa, ...

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

The National Weather Service reported an air quality alert at 11:22 a.m. EDT on Saturday in effect until Monday at midnight ...