An air quality alert was issued Thursday by the National Weather Service for the entire Chicago area through Friday night.

Air quality problems increase today and tomorrow as steamy, stagnant air leads to higher levels of ozone pollution.

Chicago faces another scorcher on the Fourth of July, with 95-degree heat, an ongoing warm streak, and evening fireworks ...

Chicago air quality alert extended through Friday, AQI in red zone 01:46. Chicago Public Schools also sent a letter home warning parents kids should limit time outside.

CHICAGO (CBS)-- Smoke pouring down from Canadian wildfires has created air quality so bad that Chicago's was deemed the worst on Earth Tuesday. Shortly before noon, the poor quality of air in the ...

According to the monitoring site IQAir, Chicago had the worst air quality in the United States and ranked second out of 95 cities worldwide Wednesday. It ranked No. 1 on the global site Tuesday.

The Chicago area is under an air quality alert until Friday night due to the Canadian wildfire smoke. 24/7 Live Chicago & Suburban Cook Co. North Suburbs West Suburbs South Suburbs NW Indiana.

The AQI in hazy Chicago reached 250 on Tuesday afternoon. Any number over 100 is considered unhealthy for sensitive groups. Haze obscures the Chicago skyline, June 27, 2023.

NBC 5 Storm Team Meteorologist Alicia Roman reported Chicago air quality was good Monday morning. However, later in the afternoon, it was expected to move into the "moderate" category, which is ...

Three U.S. cities ranked among the top 10 for worst air quality in the world Tuesday morning as smoke from Canada fires hit Chicago and the Midwest.

Actually, Chicago’s air quality was among the worst in the world after the Canadian wildfire smoke drifted south to create unsafe conditions for seniors, ...