The temperature in Death Valley National Park, State of California, United States of America reached 54.4 degrees Celsius.
It is the hottest temperature ever recorded conclusively on Earth.
The record is currently being verified by the US National Weather Service.
The temperature surfaced amid a heatwave hitting the west coast of the US, an area that is expected to fuel a rise in temperatures this week.
The heat of the weather also occurred when the power went out for two days in California after a power plant was damaged on Saturday (15 August).
The hottest temperature that was probably recorded conclusively on Earth before was 54 degrees Celsius also in Death Valley in 2013.
The higher temperature, which is 56.6 degrees Celsius, is believed to have occurred a century ago in Death Valley, but that is still up for debate.
Some modern weather experts believe that figure is wrong, along with a number of temperature records recorded that summer.
Based on the analysis of weather history, Christopher Burt, in 2016, some temperature records in the region in 1913 did not coincide with records in Death Valley.
Another temperature record on Earth was recorded in Tunisia in 1931, which reached 55 degrees Celsius.
However, Burt said this record, along with others in colonial Africa, had “serious credibility issues”.