The lowest natural temperature ever directly recorded at ground level on Earth is −89.2 °C (−128.6 °F; 184.0 K), which was at the Soviet Vostok Station in Antarctica, on July 21, 1983. Analysis of satellite data indicated a probable temperature of around −93.2 °C (−135.8 °F; 180.0 K), in East Antarctica, on August 10, 2010; however, this reading was not confirmed by ground measurements.The value may not be listed as the record coldest temperature as it was measured by remote sensing satellites and not by ground-based thermometers, unlike the 1983 record. The temperature announced reflects that of the ice surface, while the Vostok readings measured the air above the ice, and so the two are not directly comparable. However, it is most likely that the real temperature on the site was lower than that recorded at Vostok.

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