Smoke from Canadian wildfires has sent a blanket of smoke over the midwestern United States this weekend. The National Weather Service (NWS) has issued air quality alerts for Minnesota and Wisconsin, as well as, Iowa, Illinois Michigan, and parts of Nebraska and Missouri.

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the U.S. Midwest and worsening air quality there. On August 1 conditions are particularly bad in Minnesota, Iowa and Illinois.

Much of the Midwest will see conditions improve on Sunday as the smoke pushes east across the rest of the Great Lakes region. Meanwhile, in the South, there's an elevated flash flood risk in Alabama,