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)

Specialist Michael Gagliano works at his post on the floor of the New York Stock Exchange, Thursday, June 25, 2026. (AP Photo/Richard Drew)

Currency traders work near a screen showing the Korea Composite Stock Price Index (KOSPI) and the foreign exchange rate between U.S. dollar and South Korean won at the foreign exchange dealing room of the Hana Bank headquarters in Seoul, South Korea, Friday, June 26, 2026. (AP Photo/Ahn Young-joon)

Currency traders work near a screen showing the Korea Composite Stock Price Index (KOSPI) and the foreign exchange rate between U.S. dollar and South Korean won at the foreign exchange dealing room of the Hana Bank headquarters in Seoul, South Korea, Friday, June 26, 2026. (AP Photo/Ahn Young-joon)