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.

An air quality alert covering the entire state of Minnesota continues on Thursday, marring otherwise fairly ideal weather conditions.

The city fell from fifth to 11th during the day, showing some improvement in air quality but still registering worse conditions than in Egypt, China and Vietnam.

Air quality warnings covering the whole state are expected to remain in place through Saturday due to Canadian wildfire smoke.