Not everyone was reporting the dangerous air quality levels, though. The Environmental Protection Agency’s AirNow is a go-to ...

Users across Chicago were met with warnings from their smartphones about the city's air quality Wednesday that led to much ...

A hazardous cloud of toxic air has engulfed a major US city, reportedly causing an emergency alert for toxic chemicals, with ...

Various popular weather apps across Chicago showed that the air was unsafe to breathe early Wednesday morning, prompting ...

Several U.S. cities are experiencing heightened air pollution levels on Wednesday, including parts of Chicago.

The American Lung Association said they hope the report helps convince Illinois lawmakers to take action to improve air ...

Good afternoon, Chicago. Readings from several popular weather apps had people across the Chicago area spending much of yesterday wondering whether their air was safe to breathe — until the ...

Man-made air pollution is decreasing, but overall air pollution is worse due in part of wildfire smoke, according to a new ...