Air quality remains the top concern in the Chicago area today, with levels still considered unhealthy for sensitive groups.

Air quality remains the top concern in the Chicago area today, with levels still considered unhealthy for sensitive groups.

Hazy skies from fires are reminiscent of 2023 when Chicago was the second-most-polluted major city in the country.

A Chicago Air Quality Alert has been extended through Friday as smoke from Canada wildfires has pushed the AQI into unhealthy ...