Children reach for cold bottles of water from U.S. National Park Police Officer R. Douglass as they wait in line for the ferris wheel at the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jen Golbeck)

FILE - Petrona Romero, right, drinks an electrolyte beverage while working alongside her husband, Cristino, in a sugarcane field in Niland, Calif., Sept. 11, 2025. (AP Photo/Jae C. Hong, File)

FILE - Grace Chyuwei pours water on Joe Chyuwei to help with the heat Aug. 3, 2025, in Death Valley National Park, Calif. (AP Photo/John Locher, File)

FILE - Workers climb down from a building during a heat advisory, May 19, 2026, in New York. (AP Photo/Adam Gray, File)

FILE - A person uses a fan as they wait in line to purchase Broadway tickets in Times Square, during a heat advisory in New York, May 19, 2026. (AP Photo/Adam Gray, File)

Karolina Silva Matis, a 6-year-old oncology patient, is examined by Dr. Yolainy Romero Rodriguez at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)

Emanuel Darian, an 18-year-old oncology patient, left, rests as his mother Katiuska Guerrero sits by his side at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)

Salet Fernandez, a 17-year-old oncology patient, looks at her phone as her mother Yarima Mesa sits by her bed at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)