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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 (14 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. ILLINOIS RIVER AT FLORENCE, ILUSGS gauge · Illinois
    78°F25 mi14 hrs ago
  2. Mississippi River Pool Lock and Dam 26 at Alton,ILUSGS gauge · Illinois
    79°F44 mi14 hrs ago
  3. Missouri River near Labadie, MOUSGS gauge · Missouri · 50,000 ft³/s
    84°F51 mi14 hrs ago
  4. Missouri River at Hermann, MOUSGS gauge · Missouri · 49,000 ft³/s
    83°F53 mi14 hrs ago
  5. LICK CREEK NEAR WOODSIDE, ILUSGS gauge · Illinois
    74°F65 mi14 hrs ago
  6. SUGAR CREEK NEAR CHATHAM, ILUSGS gauge · Illinois
    79°F66 mi14 hrs ago
  7. Mississippi River at Keokuk, IAUSGS gauge · Iowa
    78°F81 mi14 hrs ago
  8. MASON TAZEWELL DRAINAGE D AT CR2350E NR TOPEKA, ILUSGS gauge · Illinois · 279 ft³/s
    71°F85 mi15 hrs ago

Nearest swimmable spots

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

Cuivre River State Park4.6(1,760)

Cuivre River State Park

State park · Troy, Missouri
Camping nearby

Prairie & forest trails for hikers & equestrians plus lake access for boating, fishing & swimming.

20 mi from your location

Cuivre River4.6(93)

Cuivre River

River · Missouri

The Cuivre River is a 41.6-mile-long river in the east central part of the state of Missouri, north of the Missouri River terminus. A good part of its course marks the borders between Lincoln and St. Charles counties before emptying into the Mississippi River north of St. Louis.

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.