Wildfire Smoke Timeline: Here's when Chicago Should Be Free of Hazardous Air

Chicago’s Air Quality Remains ‘Hazardous’ Friday, But Improvements Expected

Chicago’s air quality remains at hazardous levels Friday morning, though some improvements are expected as winds begin pushing wildfire smoke from Canada and Minnesota northeast.

Wildfire smoke timeline: Here's when Chicago should be free of hazardous air

Chicago had the world's second-worst air quality Friday morning as hazardous wildfire smoke blanketed the area, with smoke expected to briefly improve.

When will the smoke clear? Hour-by-hour look as 'hazardous' air quality continues for Chicago area

Improving smoke conditions were expected over the next 12-24 hours, but some could return Saturday night.