The 2003 Heat Wave Kills More Than 70,000 Europeans
Paris, France
ESTIMATED70% CONFIDENCEThe source[1] gives months, not days — "The predominant heat was recorded in July and August" — with one firm peak: "1 August 2003 was the hottest day in centuries, with night temperatures well above 30 C". The pin covers August, the month the source's own statistics section is built around.
Europe had its hottest summer since at least 1540, with night temperatures staying above 30C and eight consecutive days over 40C in Auxerre. The death toll has been estimated at more than 70,000.
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