Concern for poor air quality in the greater Chicago area remains as the Illinois EPA extends its alert until Thursday night. The city also is expected to get slightly warmer each day until the weekend.

Douglas McIntyre, Editor-in-Chief at Climate Crisis 24/7, reports that a growing number of U.S. states are under active air quality alerts due to dangerous levels of wildfire smoke. Citing data from Axios,

Good afternoon, Chicago. Air quality alerts issued today in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly common summer occurrence. The alert covers 34 Illinois counties designated as having unhealthy air for all residents.