Children play at a water sprayground in Des Moines, Iowa, Monday, June 29, 2026. (AP Photo/Hannah Fingerhut)

Toni Kreutzer gives her 13-year-old dog Chester a drink of water during a break in a walk as temperatures approach 90 degrees on Monday, June 29, 2026, in Madison, Wis. (AP Photo/Scott Bauer)

Children play at a water sprayground in Des Moines, Iowa, Monday, June 29, 2026. (AP Photo/Hannah Fingerhut)

A jogger runs on the street during a hot weather day in Mount Prospect, Ill., Monday, June 29, 2026. (AP Photo/Nam Y. Huh)

Children play at a water sprayground in Des Moines, Iowa, Monday, June 29, 2026. (AP Photo/Hannah Fingerhut)

FILE - A Japan soccer fan wipes his brow while standing in the heat in downtown Dallas, June 24, 2026. (AP Photo/LM Otero, File)

Drivers maneuver their vehicles through high water flooding West Parrish Avenue after a heavy rainfall, Saturday, June 27, 2026, in Owensboro, Ky. (Greg Eans/The Messenger-Inquirer via AP)

A sign announces that play is temporarily suspended due to dangerous weather during the final round of the Travelers Championship golf tournament at TPC River Highlands, Sunday, June 28, 2026, in Cromwell, Conn. (AP Photo/Jessica Hill)