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)

The city of Lyon, central France, is seen during a heat wave, Saturday, June 27, 2026. (AP Photo/Laurent Cipriani)

A tourist from China protects her face from the sun as she takes pictures at the Roemerberg square in Frankfurt, Germany, Saturday, June 27, 2026. (AP Photo/Michael Probst)