Here in the U.S. it is mighty hot, record breaking hot across many states.
It is plenty hot here in SW Ohio in the mid-90’s F with sweltering humidity.
I grew up here without A/C and can honestly say mid to late summer was very uncomfortable. We had screens in our windows that allowed mosquitoes easy entry.
To top it all off our parents were obsessed about electric bills and didn’t buy a single fan until a decade later!
For those of you without A/C in the UK, you have my heartfelt condolences!