Temperatures rose to 40°C (104°F) in some French cities on Friday during the latest peak of the prolonged heatwave this summer.

Seventy-eight departments, including Rhône, Hauts-de-Seine, Calvados and Finistère, are on orange heatwave alert. Weeks of drought have led the authorities to impose successive…

Forecasters in the U.K. are predicting the mercury will rise as high as 38 C in central and southeast England on Thursday, potentially making it the hottest day of the year.…