Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

Chicago faces a heat wave with poor air quality due to wildfire smoke and ozone; temperatures may hit mid-90s.

A cold front moving through the Chicago area is bringing brief relief from summer heat, with clearer skies and drier air expected Sunday before humidity returns early next week. The front stretched across northwest Indiana to central Illinois on Saturday,

Once Chicago’s iconic lakefront airport, Meigs Field is now a thriving park blending nature, history, and bold urban transformation.

Following one of the scariest collisions of the season at Chicago, Cody Ware has reached out to let everyone know he’s OK. He updated his status on Wednesday with a post on Instagram. Ware was involved in a wreck into the tire barriers on Turn 6 in the late stages of the Chicago street race.

While reserve parachutes were deployed, one skydiver was killed after he was sent into an "uncontrolled" free fall.