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
Just to be clear, studies also indicate that we will not realistically limit global heating to anything close to 1.5C, unless very drastic actions are taken immediately (actions on a level that would be seen as extremely radical by most people)
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