16+ US States Under Air Quality Alerts; Venues and Airports Disrupted

AQI readings hit 1,135 in Saginaw, MI, 1,615 in Virginia, MN, 576 in Cleveland and 460 in Detroit. Cedar Point amusement park closed early, a Cleveland Guardians–Pittsburgh Pirates game was suspended, and a ground delay was later issued at Philadelphia International Airport. More than 120 million Americans lived under air quality alerts during the episode.