The National Weather Service issued air quality alerts on Monday for millions of Americans in Wisconsin, Michigan, ...

CHICAGO (WLS) -- An air quality alert has been extended for part of the Chicago area through Thursday. The alert for McHenry, Lake, Kane, DuPage, Kendall, Grundy, Cook and Will counties in Illinois ...

An Air Quality Alert is active until Thursday night at midnight. People with sensitivities should take precautions.