Alligator's Creek Aquatic Center
✓ Last confirmed for the 2026 season
Where: Civic Park, O'Fallon, Missouri
Season: seasonal (summer)
Hours: typically daylight hours
Cost: $10
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O'Fallon's city aquatic center bundles a splash pad with a lazy river, slides, and lap lanes, with toddler admission priced at just a couple dollars. It is the paid step up when the town's free pads stop being enough.
What's on site. OpenStreetMap maps playground alongside, parking at this location. No public toilets are mapped here — worth knowing before you commit to an afternoon.
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: