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)

A girl cools off in a public fountain in Vilnius, Lithuania, Friday, June 26, 2026. (AP Photo/Mindaugas Kulbis)

People line up to refill their water bottles on a hot summer day in the city center of Vienna, Austria, Saturday, June 27, 2026. (AP Photo/Heinz-Peter Bader)

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)