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, Wisconsin, Michigan, Iowa and Illinois, as Chicago, Fort Wayne, Kansas City and Omaha are also under air quality alerts.

Wildfire smoke drifting across the Great Lakes has caused air quality to plunge to hazardous levels in several states, affecting millions of people in major cities.

Wildfire smoke from Canada turned Chicago into one of the world’s most polluted metro areas as the Lollapalooza music festival began.