Anyone out there with real medical knowledge, or industrial hygiene knowledge, of how much heat a human and their society can take before people just die and society crumbles?

Because looking at the situation from the USA, things are looking grim in India. Severe weather about to get worse and the closure of the straits of hormuz means less power for Air conditioning, no pumped water and no way to handle sewage. All this in a country with lethal air quality levels.

Better yet, is anyone on this site actually there, and have some ground truth they are willing to share.

How much heat can we take before things fall apart and we just die.

I'm not looking for a political discussion, or doomer porn, this is more of a concern for humanity question.

https://yaleclimateconnections.org/2026/05/whats-a-super-el-nino-and-other-el-nino-questions-answered/

https://www.lemonde.fr/en/environment/article/2026/05/20/heat-strokes-are-part-of-the-job-in-delhi-construction-workers-endure-43-c-heat_6753631_114.html

Been doing some digging. Answer seems to be "it depends".
https://www.nbcnews.com/science/environment/how-hot-too-hot-humans-record-temperatures-rcna160261

US president says he is pausing US effort to guide stranded vessels out of the strait of Hormuz but blockade remains.

Really what happened is he restarted the war and almost lost a destroyer. Also Iran still says they aren't talking to the USA. It's just another pump and dump for the stock market.

https://nuclearsecrecy.com/nukemap/

Pick a location, select a warhead yeild, air or ground burst. Then press detonate.