We’re looking at a cloudy but pleasant Saturday before some more hot and steamy weather this weekend. What to Expect:It started off cooler in Chicago this morning with sunshine and clouds. Highs today will reach the upper 70s and lower 80s with a bit more humidity. Starting tomorrow, the humidity will ramp up with highs in the upper 80s and lower 90s on Sunday, but heat indices ranging from the mid-90s to about 105 degrees. We'll remain in the 90s for our highs on Monday and then slightly cool off with highs in the upper 80s throughout much of the workweek.