This. Having survived dozens of mediterranean village summers without A/C, I am genuinely puzzled how it came to be considered a necessity. Is it "modern" construction methods that turned buildings into heat batteries? So, it became a necessity in the cities, and then spread everywhere because we became spoiled and our collective tolerance to heat dropped?
Last night, or rather this morning, the temperature reached it's lowest at 5 AM: 28C. When I woke up two hours later we had 33, and when I started working at 9, 38. The thermometer then reached 43 at noon, where it it still stuck 4 hours 45 minutes later, despite the rising humidity (I live by the sea), making the humidex reach 51. The temperature won't be below 34 before midnight, and might be below 30 at 5AM tomorrow morning.