A woman walks across the street with a fan in her arms in the center of Brussels, Thursday, June 25, 2026. (AP Photo/Omar Havana)

A man on a train wipes sweat from his face on a hot day in London, Wednesday, June 24, 2026. (AP Photo/Kin Cheung)

People shade from the sun under umbrellas as they walk through St. Peter's Square at the Vatican, Thursday, June 25, 2026. (AP Photo/Andrew Medichini)

Faithful shelter from the hot sun as Pope Leo's XIV arrives for his weekly general audience in St. Peter's Square at The Vatican, Wednesday, June 24, 2026. (AP Photo/Alessandra Tarantino)

A worker drinks water as he sets up a stage for the upcoming Ironman triathlon, Frankfurt, Germany, Thursday, June 25, 2026. (AP Photo/Michael Probst)

A stork approaches its nest in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)

A one-week-old sparrow kitten that fled out of its nest due to the hot temperatures sits on the hand of a veterinarian in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)

A one-week-old sparrow kitten that fled out of its nest due to the hot temperatures is fed with flies by a veterinarian in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)