<P> The standard measuring conditions for temperature are in the air, 1.5 meters above the ground, and shielded from direct sunlight . According to the World Meteorological Organization (WMO), the highest confirmed temperature on Earth recorded according to these measures was 56.7 ° C (134.1 ° F) in Furnace Creek Ranch, California, located in the Death Valley desert in the United States, on July 10, 1913 . </P> <P> From 1922 until 2012, the WMO record for the highest official temperature on Earth was 57.8 ° C (136.0 ° F), registered on 13 September 1922 in' Aziziya, Libya . In January 2012, the WMO decertified the 1922 record, citing persuasive evidence that it was a faulty reading recorded in error by an inexperienced observer . Christopher C. Burt, the weather historian writing for Weather Underground who shepherded the Libya reading's 2012 disqualification, believes that the 1913 Death Valley reading is also "a myth", and is at least four or five degrees Fahrenheit too high, as do other weather historians Dr. Arnold Court and William Taylor Reid . If the 1913 record were to be decertified, the current highest recorded temperature on Earth would be 54.0 ° C (129.2 ° F), recorded both in Death Valley on 20 June 2013, and in Mitribah, Kuwait on 21 July 2016 . </P> <P> At 41.80 ° C (107.24 ° F), July 2017 in Furnace Creek, Death Valley, was the hottest single month (average monthly temperature) ever reliably measured anywhere on Earth since records began in 1911 . </P> <P> Temperatures measured directly on the ground may exceed air temperatures by 30 to 50 ° C. A ground temperature of 84 ° C (183.2 ° F) has been recorded in Port Sudan, Sudan . A ground temperature of 93.9 ° C (201 ° F) was recorded also in Furnace Creek Ranch on 15 July 1972; this may be the highest natural ground surface temperature ever recorded . The theoretical maximum possible ground surface temperature has been estimated to be between 90 and 100 ° C for dry, darkish soils of low thermal conductivity . </P>

What is the hottest temperature on the sun