Near record-breaking heat expected as sizzling heat wave continues

The second heat wave to hit the Chicago area in three weeks is expected to bring near-record breaking heat to the area Tuesday afternoon. While an official high won't be confirmed by the National Weather Service until later Tuesday afternoon, heat index values are expected to peak around 100 degrees and the projected high at O'Hare Airport is 97 degrees — just shy of the record high of 100 degrees for July 14 set in 1995. An air quality alert was in effect until at least Wednesday for…