Weekly swim report · August 21, 2026
Pennsylvania swim report
On August 21, 2026 the warmest USGS water reading in Pennsylvania was 81°F at Delaware River at Fort Mifflin at Philadelphia, PA; no water-related NWS hazards are active.
Warmest water
The 5 warmest of 135 sensors reporting a water temperature in Pennsylvania today. Station names open the official monitoring page.
- #181°F 27°C9 hrs ago
- #280°F 27°C8 hrs ago
- #3Susquehanna River near Peach Bottom, PAUSGS gauge80°F 27°C9 hrs ago
- #4DELAWARE RIVER AT CHESTER PAUSGS gauge80°F 27°C9 hrs ago
- #5Susquehanna River at Columbia, PAUSGS gauge80°F 26°C18 hrs ago
Active hazards in Pennsylvania
No water-related NWS hazards are active in Pennsylvania right now. Checked live against the National Weather Service alert feed.
Where to swim in Pennsylvania
The most-reviewed, well-rated water destinations in Pennsylvania — check each one’s live conditions before you go.
4.3(5,502)Splash Lagoon
Indoor water park has slides, a lazy river, a ropes course, tropical pool areas, arcade & laser tag.
4.7(3,310)Ridley Creek State Park
Green oasis of woodlands & meadows offering hiking, fishing & picnicking from sunrise to sunset.
4.8(1,846)Schuylkill River Park
This park runs along the river & offers a playground, paved paths, sports areas, a pool & a dog run.
4.7(1,627)Twin Lakes Park
Park aimed at accessible recreation with paved walkways, fishing lakes, boat rentals & playgrounds.
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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.