(FILES) This file photo taken on July 27, 2018 shows a pharmacy thermometre displaying 40 oC in Lille, northern France, after the city broke a new heatwave record of high temperature. - Up to 40 degrees celsius during the day, 25 at night: France will know next week a heat wave exceptional in its precocity and intensity, warns on June 21, 2019 Meteo-France, saying that the heat waves are multiplying with the global warming. (Photo by DENIS CHARLET / AFP)