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.

Elsewhere, wildfire smoke from Canada continues to blanket the Midwest, prompting alerts for millions for dangerous breathing conditions. Air quality alerts are in effect for the entire states of Minnesota,