By the end of the century, it will become dangerous for people in some countries to go out because of the heat.

American scientists have calculated how the number of extremely hot days will increase over the course of a century. They built several models based on emission data and different combinations of temperature and humidity. If humanity manages to keep the level of global warming at around 2 ° C, by 2100 there will be 3-10 times more dangerously hot days in the USA, Western Europe, China and Japan. In the tropics, their number can double. In the worst case scenario, extremely dangerous heatwaves during which you cannot go outside could become the norm in India and sub-Saharan Africa. Now heat above 39.4 °C is considered dangerous, and above 51 °C is considered extremely dangerous. These are US National Weather Service estimates.