Large areas of Earth’s surface could soon be so hot that people will die within hours in the open air, several recent studies have warned.

Aidan Charron, an environmental scientist and associate director of Earth Day, warned that the warning signs of extreme heat are already here.
“Parts of South Asia, sub-Saharan Africa, and the Middle East - Dubai for example in the United Arab Emirates - are all going to face some of the worst impacts of climate change in the form of even worse extreme heat indexes," Carron told Yahoo News.
In May 2024, India and Pakistan also saw record heat waves with temperatures hitting 50C."This is all going to get worse," Carron continued. "New Delhi was especially badly hit with extreme heat. We could easily see heat indexes in this part of the world that make outdoor life virtually impossible, by the end of the century. In the US too this is going to be an issue – for example, Chicago is becoming a severe heat zone.”
https://uk.yahoo.com/news/planet-inhabitable-hot-weather-climate-change-163207037.html