FILE - Firefighter Geo Mulongo, center, finishes his water while taking a break during the Line Fire in Highland, Calif., Sept. 6, 2024. (AP Photo/Jae C. Hong, File)

FILE - A tourist shelters from the sun by a fountain in front of the Sforzesco Castle in Milan, Italy, July 11, 2024. (AP Photo/Luca Bruno, File)

FILE - Tourists with an umbrella walk in front of the Parthenon at the ancient Acropolis in central Athens, June 12, 2024. June 2024 was the hottest June on record, according to Europe's Copernicus climate service on Monday, July 8. (AP Photo/Petros Giannakouris, File)

FILE - A woman, center, weeps as patients of heatstroke receive treatment at a hospital in Karachi, Pakistan, June 25, 2024. (AP Photo/Fareed Khan, File)

FILE - A volunteer pours water to cool a man off during a hot day in Karachi, Pakistan, May 21, 2024. (AP Photo/Fareed Khan, File)

FILE - Counselor Izzy Kellar, of Dayton, Ohio, fills up her campers' water bottles, June 20, 2024, at YMCA Camp Kern in Oregonia, Ohio. (AP Photo/Joshua A. Bickel)

FILE - A man fills containers with water due to the shortage caused by high temperatures and drought in Veracruz, Mexico, on June 16, 2024. (AP Photo/Felix Marquez, File)

FILE - Ricky Leath, an outreach specialist with the City of Miami, talks with Bei Zhao, right, as he works with the Miami-Dade County Homeless Trust to distribute bottles of water and other supplies to the homeless population, helping them manage high temperatures, May 15, 2024, in Miami. (AP Photo/Lynne Sladky, File)