Chicago and surrounding areas are under an air quality alert until midnight, weather officials said.

Children, the elderly and anyone with heart or lung conditions should reduce or avoid exertion and heavy work outdoors Tuesday, state officials said.

Sensitive groups that could be impacted by poor air quality include people with heart and lung disease, older adults, children, people with diabetes and those with a lower socioeconomic status, accor...

A Severe Thunderstorm Watch has been issued for Boone, Cook, DeKalb, DuPage, Grundy, Kane, Kankakee, Kendall, LaSalle, Lake, McHenry and Will counties in Illinois and Lake and Porter counties in Indiana until 8 p.m. Wednesday will be very hot and humid, with highs in the low 90s.

Chicago is facing another round of severe storms on Tuesday, with threats including damaging winds, hail and heavy downpours.

The Storm Prediction Center has placed much of the area within a Level 2 Risk for severe storms, mainly between 2 pm and 8 pm.