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)

People take shelter with umbrellas as they wait for the Angelus noon prayer celebrated by Pope Leo XIV from the window of his studio overlooking St.Peter's Square, at the Vatican, Sunday, June 28, 2026. (AP Photo/Alessandra Tarantino)

People jump into the Bosphorus with the Maiden's Tower in the background during sunset in Istanbul, Turkey, Sunday, June 28, 2026.(AP Photo/Emrah Gurel)

People shelter from sun with umbrellas as they wait for the Angelus noon prayer celebrated by Pope Leo XIV from the window of his studio overlooking St.Peter's Square, at the Vatican, Sunday, June 28, 2026. (AP Photo/Alessandra Tarantino)

People refresh in a fountain after the Angelus noon prayer celebrated by Pope Leo XIV from the window of his studio overlooking St.Peter's Square, at the Vatican, Sunday, June 28, 2026. (AP Photo/Alessandra Tarantino)

A couple walks by a public fountain on a torrid day, as the National Weather forecaster issued an extreme heat code red warning for parts of the country, in the coming days in Bucharest, Romania, Saturday, June 27, 2026. (AP Photo/Andreea Alexandru)

FILE - A construction worker hydrates at the Shedd Aquarium Tuesday, Aug. 27, 2024, as a second straight day of hot soupy temperatures approaching triple digits hung over much of the Midwest in Chicago. (AP Photo/Charles Rex Arbogast, file)