The Chicago area is bracing for a late-summer heat wave, with heat index values as high as 105 degrees possible in the coming days. A heat advisory is set to take effect from noon to 9 p.m. on Tuesday and Wednesday for the following areas: LaSalle, Kendall, Grundy, Kankakee, Will and southern Cook counties in Illinois, along with Lake, Porter, Newton and Jasper counties in Indiana. According to the National Weather Service, peak heat index value…