The hottest temperature ever recorded on Earth naturally was in Furnace Creek Ranch, Death Valley, California, United States, on July 10, 1913. The temperature reached a scorching 56.7 degrees Celsius (134 degrees Fahrenheit).
As for artificially generated temperatures, scientists have been able to achieve incredibly high temperatures in laboratory settings, particularly in experiments related to nuclear fusion. However, it's important to note that these temperatures are not representative of natural conditions on Earth. One notable example is the Experimental Advanced Superconducting Tokamak (EAST) in China, which achieved a temperature of over 100 million degrees Celsius (180 million degrees Fahrenheit) in 2018. These extreme temperatures are necessary for studying plasma physics and advancing fusion energy research.