An African penguin cools off in a basin in Kronber zoo, near Frankfurt, Germany, Tuesday, June 23, 2026. (AP Photo/Michael Probst)

A family walks through a cooling water spray at the Eiffel Tower in Paris, Sunday, June 21, 2026. (AP Photo/Michel Euler)

A woman shields herself from the sun with an umbrella as she walks in the garden of the Palace of Versailles, outside Paris, during a heat wave with temperatures soaring above 40 degrees Celsius (104 Fahrenheit), Monday, June 22, 2026. (AP Photo/Thibault Camus)

A woman shields herself from the sun with an umbrella as she walks in the garden of the Palace of Versailles, outside Paris, Monday, June 22, 2026. (AP Photo/Thibault Camus)

Two women take a drink into a river in Lille, northern France, Monday June 22, 2026. (AP Photo/Jean-Francois Badias)

A young man dives into the water, in Lille, northern France, Monday June 22, 2026. (AP Photo/Jean-Francois Badias)

People cool off in a water spray at the Eiffel Tower in Paris, Sunday, June 21, 2026. (AP Photo/Michel Euler)

A man shields himself from the sun with a scarf as he walks in the garden of the Palace of Versailles, outside Paris, during a heat wave with temperatures soaring above 40 degrees Celsius (104 Fahrenheit), Monday, June 22, 2026. (AP Photo/Thibault Camus)