O'Neil Park Splash Pad
✓ Last confirmed for the 2026 season
Where: 6448 W Missouri Ave, Glendale, Arizona
When: May 24 - September 1
Hours: 12-7 p.m.
Cost: free
public-park
O'Neil Park's splash pad follows Glendale's summer aquatics calendar, open afternoons from Memorial Day weekend through early September. The neighborhood park sits just off Missouri Avenue in central Glendale.