O'Day Park Splash Pad
✓ Last confirmed for the 2024 season

Where: 1000 O'Day Park Dr, O'Fallon, Missouri
Season: seasonal (summer)
Hours: 6 a.m.-9 p.m.
Cost: free
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O'Day Park's water feature is styled as a naturalistic splash creek woven into a dramatic nature-themed playground. Parents of the smallest kids should note the rockwork has some hard edges, so water shoes are a good idea.
When to go. Peak summer highs in O'Fallon average 89°F — warm enough for a splash pad through most of the season without being punishing at midday.
If this one's closed or packed
Splash pads close for maintenance, run short seasons and fill up on hot weekends. There are 2 other pads within 5 miles and 8 within 15. These are the ones worth the drive — ranked by shade, toilets and cost first, then by how close they are: