Get air conditioners all of you.
I live in Texas, so it is a necessity. But when I spent two weeks in Europe and it was 80 degrees outside it was unbearable at the hotels.
Unless you are living in Syberia, get an air conditioner. Maybe you only have to use it two weeks out of the year, but it is still a good investment.
People die during heat waves even in the US because they are to cheap to buy a 200 dollar window unit.