Eight-year-old Willie Fitts holds his nose as he dips his head in the spray of a fountain at the Red Ridge Park kids water park in Las Vegas on Saturday, June 29, 2013. Saturday's daytime high was expected to reach 117 degrees, which is the city's all-time high. CALLING THE HEAT: The home plate umpire dumps a hat-full of water over his head between innings during an American Legion baseball game between Walla Walla and Honda on Saturday, June 29, 2013, in Walla Walla, Wash. AP Photo/Walla Walla Union-Bulletin, Matthew Zimmerman Banderas People play in the fountain in front of the Barrett, The Honors College building at Arizona State University campus in Tempe, Ariz. during the Tempe Bicycle Action Group swimsuit ride on Saturday, June 29, 2013. About 100 cyclists biked around the city cooling off in pools and fountains. AP Photo/The Arizona Republic, David Wallace Quyenh Lam of Toronto stops to shoot video of the Bellagio fountain show along The Strip, Saturday, June 29, 2013 in Las Vegas. Los Angeles Dodgers fan Josh Kohl puts a towel on his head for some relief from the heat during batting practice prior to the Dodgers' baseball game against the Philadelphia Phillies, Saturday, June 29, 2013, in Los Angeles. Scorching heat blasted the Southwest on Saturday, and the temperature in Los Angeles was expected to exceed 90 degrees. Soaring temperatures are punishing most of the western U.S. for a third day. People flocked to pools, sought shade and misting fans, and cooled off with bottled water. Even zoo animals found relief under a refreshing spray of water.