https://en.wikipedia.org/wiki/2015_Pakistan_heat_wave
As far as global warming goes, study results indicate that limiting global warming to 1.5 °C would prevent most of the tropics from reaching the wet-bulb temperature of the human physiological limit of 35 °C. https://www.nature.com/articles/s41561-021-00695-3
Typically, a wet-bulb temperature above 95F (35C) poses a severe risk to health, especially with high humidity.
It's important to note that such extreme wet-bulb temperatures are relatively rare in most parts of the world
The concern the top-level comment has is that sooner rather than later these cases will not be as rare and so more people will become familiar with this concept.
“The [wet-bulb] temperature reading you get will actually change depending on how humid it is,” says Kristina Dahl, a climate scientist at the Union of Concerned Scientists. “That’s the real purpose, to measure how well we’ll be able to cool ourselves by sweating.”
Source: https://www.theguardian.com/science/2022/jul/31/why-you-need...
Apparently 95f or 35c is the "limit" for humans - where many people will have health issues if they can't cool off otherwise.
https://en.wikipedia.org/wiki/Wet-bulb_temperature
> The theoretical limit to human survival for more than a few hours in the shade, even with unlimited water, is a wet-bulb temperature of 35 °C
