It looks like Chicago may miss 32°C (90°F) ever so slightly. It's 31.7°C (89°F) officially right now. It's supposed to cool down on Sunday. I hope so, because I'm melting already.
Update, 4:05p (21:05 UTC): We hit 32°C. But it's not the hottest day of 2006: that was May 28th, when Chicago hit 33.3°C (92°F).