The worst heat was felt in southern Europe, while punishing temperatures were forecast to reach 104 degrees Fahrenheit in Paris and remain unusually high in Belgium and the Netherlands.

Punishing temperatures were forecast to reach 40 degrees Celsius (104 degrees Fahrenheit) in Paris and to stay unusually high in Belgium and the Netherlands. In contrast, temperatures were falling in Portugal, where no red heat warnings were issued.

As a heat wave scorches most of Europe, the Eiffel Tower announced it will be closing early on Tuesday as Paris is expected to hit triple-digit temperatures.