Smoke from the more than 700 wildfires burning in Canada is continuing to blanket parts of the Midwest for a final day.

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.

Widespread special air quality statements are in effect across much of Ontario and Quebec this weekend as thick plumes of wildfire smoke push into the region from the Prairies. Smoke and air quality issues will continue east into Quebec and portions of the Maritimes on Sunday.