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Live · updated daily from USGS

Swimmable water near you

2,135 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (16 hrs ago).

Clear location
  • Cold · below 60°F · 375
  • Cool · 60–69°F · 594
  • Comfortable · 70–86°F · 938
  • Warm · above 86°F · 228
  • You

A map of the United States with one coloured dot per USGS sensor reporting a live water temperature. The readings are listed below.

Nearest live readings

The closest USGS sensors currently reporting a water temperature, nearest first.

  1. Big River below Bonne Terre, MOUSGS gauge · Missouri · 296 ft³/s
    78°F33 mi17 hrs ago
  2. Mississippi River Pool Lock and Dam 26 at Alton,ILUSGS gauge · Illinois
    79°F39 mi17 hrs ago
  3. Missouri River near Labadie, MOUSGS gauge · Missouri · 50,000 ft³/s
    84°F40 mi17 hrs ago
  4. BIG MUDDY RIVER AT RTE 127 AT MURPHYSBORO, ILUSGS gauge · Illinois · 870 ft³/s
    80°F60 mi17 hrs ago
  5. Huzzah Creek near Steelville, MOUSGS gauge · Missouri · 137 ft³/s
    75°F61 mi17 hrs ago
  6. East Fork Black River near Lesterville, MOUSGS gauge · Missouri · 49 ft³/s
    73°F64 mi17 hrs ago
  7. E. Fk. Black R. bl Lower Taum Sauk ReservoirUSGS gauge · Missouri · 113 ft³/s
    82°F68 mi17 hrs ago
  8. Missouri River at Hermann, MOUSGS gauge · Missouri · 49,000 ft³/s
    83°F74 mi17 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

St. Louis Riverfront4.7(923)

St. Louis Riverfront

Tourist attraction · St. Louis, Missouri
Camping nearbyDog-friendly

Prominent city monument & symbol with a museum & a tram taking visitors 630 feet to the top.

21 mi from your location

About this map

Every pin is a live reading from a USGS real-time monitoring station, captured in a daily snapshot. Colours follow the site’s cold-water-safety thresholds and describe the water at that one sensor — usually a river or stream gauge, not a swim beach — so treat them as a guide to what the water is doing nearby, not a verdict on a specific spot. Readings are provisional and can be revised by the USGS. Your location only sorts this page: the coordinates appear in the address bar (rounded to about a mile) and are not saved to an account or our database.

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.