A few summer's ago on was on this job on the 36th fl /penthouse and it was mid renovation and while the new windows were in they were all locked. (cool swedish windows - tilt, twists yadha yadha).
So it's hovering around 100 outside and well you can just imagine the apt with no air, venting, the only open windows were in the kichen window and one of the bath windows - it was sweltering.
My entire body was wet and water was rolling down my legs after about 20 minutes.