Live · updated daily from USGS
Swimmable water near you
2,137 USGS sensors are reporting a live water temperature right now, the newest reading from August 21, 2026 (9 hrs ago).
- Cold · below 60°F · 375
- Cool · 60–69°F · 595
- Comfortable · 70–86°F · 938
- Warm · above 86°F · 229
- 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.
- 79°F50 mi10 hrs ago
- BIG MUDDY RIVER AT RTE 127 AT MURPHYSBORO, ILUSGS gauge · Illinois · 870 ft³/s80°F54 mi10 hrs ago
- Big River below Bonne Terre, MOUSGS gauge · Missouri · 296 ft³/s78°F76 mi10 hrs ago
- SUGAR CREEK NEAR CHATHAM, ILUSGS gauge · Illinois79°F79 mi10 hrs ago
- Missouri River near Labadie, MOUSGS gauge · Missouri · 50,000 ft³/s84°F79 mi10 hrs ago
- WABASH RIVER AT NEW HARMONY, INUSGS gauge · Indiana · 61,100 ft³/s78°F83 mi10 hrs ago
- LICK CREEK NEAR WOODSIDE, ILUSGS gauge · Illinois74°F83 mi10 hrs ago
- Mississippi River at Cape Girardeau, MOUSGS gauge · Missouri83°F86 mi9 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
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.