Phew!! heatwave here in the UK, I'd gladly strip off! No air con, me and the dogs slept in the hall last night, the only cool place in the house.
Oh that is hard! I didn't have AC for many years in this house. I have skylights that open and that helped move the air through. But they weren't helpful on those days that the air was thick and completely still. I finally broke down several years ago and got central AC. Best thing I ever did. I did it more for the animals than myself, but I'm really enjoying it now.