Middle East and Southwest Asia heat wave
During the last week of May, an impressive dome of overheated air with an isotherm of 35°C (95°F) at 850 hpa (approximately 5,000 feet) extended across the Strait of Hormuz near southern Iran and southwestern Pakistan. In places where this air was being forced downward, the extreme heat allowed for strong compressional warming that produced exceptional surface temperatures. On May 28, after a minimum temperature of 34.5°C (94°F), the high temperature in the Western Pakistani town of Turbat reached 53.5°C (128.3°F) in mid-afternoon. This tied the all-time highest temperature ever recorded in Pakistan, and the world record of highest temperature for May--both set in Moen Jo Daro on May 26, 2010 (not May 27 as wrongly reported in some media.)
There is a controversy about the correct maximum temperature in Turbat, though. It was reported by the Pakistan Meteorological Department as 53.5°C (the precision of the thermometer is 0.5°C, like in most Pakistani stations), but the temperature was later rounded to 54.0°C (129.2°F.) If that is correct, it would tie the highest reliable temperature ever recorded in the planet, the 54.0°C reading set on July 21, 2016 in Mitribah, Kuwait. Regardless, the 53.5°C reading at Turbat on May 28, 2017, ranks as one of Earth’s top five hottest reliably-measured temperatures on record; see Wunderground weather historian Chris Burt’s July 22, 2016 post, Hottest Reliably Measured Air Temperatures on Earth, for more information.