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