An Icelandic horse drinks water from a water hose at a stud farm in Wehrheim near Frankfurt, Germany, Monday, June 30, 2025, at the beginning of a multi-day heat wave. (AP Photo/Michael Probst)
A man takes a shower at Alimos beach near Athens, Thursday, June 26, 2025, as the summer's first heat wave hits Greece, with temperatures expected to edge over 40 degrees Celsius, (104 Farenheit). (AP Photo/Petros Giannakouris)
Tourists with an umbrella walk in front of the ancient Parthenon temple at the Acropolis Hill, Thursday, June 26, 2025 as the summer's first heatwave hits Greece, with temperatures expected to edge over 40 degrees Celsius, (104 Farenheit).(AP Photo/Petros Giannakouris)
Madison Keys of the U.S. uses an ice towel to cool during her first round women's single match against Elena-Gabriela Ruse at the Wimbledon Tennis Championships in London, Monday, June 30, 2025. (AP Photo/Kirsty Wigglesworth)
Demonstrators use fans to help with the high temperature during a protest against the housing crisis affecting Portugal, in Lisbon, Saturday, June 28, 2025. (AP Photo/Armando Franca)
An Icelandic horse drinks water from a water hose at a stud farm in Wehrheim near Frankfurt, Germany, Monday, June 30, 2025, at the beginning of a multi-day heat wave. (AP Photo/Michael Probst)
PRO
A man takes a shower at Alimos beach near Athens, Thursday, June 26, 2025, as the summer's first heat wave hits Greece, with temperatures expected to edge over 40 degrees Celsius, (104 Farenheit). (AP Photo/Petros Giannakouris)
PG
Young swimmers jump into the water from a rock on a breakwater on a hot day in Barcelona, Spain, Sunday, June 29, 2025. (AP Photo/Emilio Morenatti)
EM
Tourists with an umbrella walk in front of the ancient Parthenon temple at the Acropolis Hill, Thursday, June 26, 2025 as the summer's first heatwave hits Greece, with temperatures expected to edge over 40 degrees Celsius, (104 Farenheit).(AP Photo/Petros Giannakouris)
PG
A woman protects her head during a heat wave, Monday, June 30, 2025 in Paris. (AP Photo/Christophe Ena)
BC
Madison Keys of the U.S. uses an ice towel to cool during her first round women's single match against Elena-Gabriela Ruse at the Wimbledon Tennis Championships in London, Monday, June 30, 2025. (AP Photo/Kirsty Wigglesworth)
TH FA
Demonstrators use fans to help with the high temperature during a protest against the housing crisis affecting Portugal, in Lisbon, Saturday, June 28, 2025. (AP Photo/Armando Franca)
AF
Tourist under umbrellas walk on the Roemerberg square in Frankfurt, Germany, Wednesday, July 2, 2025. (AP Photo/Michael Probst)
PRO
Men jump into the water on a hot day in Barcelona, Spain, Tuesday, July 1, 2025. (AP Photo/Emilio Morenatti)