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

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

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

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