Supermarkets , big name shops and shopping centres are air conditioned as are many newer offices (not mine though that's irrelevant right now).as for houses, we could never justify it. We have maybe 2-5 super hot days a year, 30°c plus. Then a further 8-15 days which are 25 to 30°c. We just couldn't justify it. Plus, on those hot days we are likely to be outside anyway. And in the bedroom we just have the fan on and all windows open to get a through draft. I don't know anyone at all, or have ever visited a house in the UK which has a proper aircon unit.What I find concerning is the lack of cold air-con in your part of the world. I know it is rare, but when it gets this hot you need to have an outlet to somewhere you can escape the heat completely. It is unbearable to be in 35+ heat without air-con.
Good luck friends
Pee ess I'm smack bang in the middle of the UK, so probably a good average if the whole country. Other areas may be hotter or cooler



