Chicago First Alert Weather: Dangerous heat Thursday, Friday

CHICAGO (CBS)-- The heat is building. 

Thursday's temperatures will be in the  90s with high humidity. 

An Excessive Heat Warning is in effect for Will, Kankakee, Grundy, LaSalle, and Newton (IN) counties. In these areas, heat index values are expected to reach up to 110 degrees. 

With dangerous heat Thursday and Friday, Chicago is turning the city's six community service centers into cooling areas. More information is available here.   

A Dense Fog advisory is in effect for Northwest Indiana and areas south of Chicago until 8 a.m.  

The intense heat continues into Friday as storm chances increase. Storms are expected Friday night and could turn severe with threats of damaging wind and hail.  

Rain and storms wrap up early Saturday which then gives way to a pleasant, less humid weekend.