A Fiaker horse carriage rider cools his horses on a hot summer day in the city center of Vienna, Austria, Saturday, June 27, 2026. (AP Photo/Heinz-Peter Bader)

Spectators wear hats against the heat during the final of the Bad Homburg Open WTA tennis tournament in Bad Homburg, Germany, Saturday, June 27, 2026. (AP Photo/Michael Probst)

A stork approaches its nest in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)

A one-week-old sparrow kitten that fled out of its nest due to the hot temperatures sits on the hand of a veterinarian in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)

A one-week-old sparrow kitten that fled out of its nest due to the hot temperatures is fed with flies by a veterinarian in Wehrheim near Frankfurt, Germany, Friday, June 26, 2026. (AP Photo/Michael Probst)

People cool off at Trocadero fountain near the Eiffel Tower during a heat wave in Paris, Wednesday, June 24, 2026. (AP Photo/Christophe Ena)

A worker drinks water on a construction site during high temperatures in Boulogne Billancourt, outside Paris, Wednesday, June 24, 2026. (AP Photo/Christophe Ena )

A person cools off at Trocadero fountain near the Eiffel Tower during a heat wave in Paris, Wednesday, June 24, 2026. (AP Photo/Christophe Ena)