Ruth, 11, from Burke, Va., gets cold water poured on her head to cool off at the Great American State Fair on the National Mall, Thursday, July 2, 2026, in Washington. (AP Photo/Alex Brandon)

Mickelina Papotto, of Salem, Ore., left, and Lorie Odegaard, of Gaithersburg, Md., fan themselves while waiting in line for the ferris wheel at the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jacquelyn Martin)

A vendor pulls out a bottle of water from a tank using dry ice to keep it cold, during a heat wave at the Great American State Fair on the National Mall, Thursday, July 2, 2026, in Washington. (AP Photo/Alex Brandon)

A man wipes sweat off of his head while attending the Great American State Fair, on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jacquelyn Martin)

Visitors and members of the National Guard rest in the shade of a tent while attending the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Nathan Howard)

Stephanie McCallister holds a cold bottle of water to her husband Don McCallister's neck as they wait in line for the ferris wheel at the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jen Golbeck)

Visitors wait to enter the Washington Monument, Wednesday, July 1, 2026, in Washington. (AP Photo/Tom Brenner)

People cross 15th Street Northwest as a National Guard Humvee blocks the roadway, Wednesday, July 1, 2026, in Washington. (AP Photo/Tom Brenner)