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 (21 hrs ago).
- 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.
- ILLINOIS RIVER AT FLORENCE, ILUSGS gauge · Illinois78°F40 mi21 hrs ago
- Mississippi River at Keokuk, IAUSGS gauge · Iowa78°F47 mi21 hrs ago
- Missouri River at Hermann, MOUSGS gauge · Missouri · 49,000 ft³/s83°F69 mi21 hrs ago
- Des Moines River at Keosauqua, IAUSGS gauge · Iowa · 11,500 ft³/s79°F77 mi21 hrs ago
- Missouri River near Labadie, MOUSGS gauge · Missouri · 50,000 ft³/s84°F84 mi21 hrs ago
- 79°F84 mi21 hrs ago
- MASON TAZEWELL DRAINAGE D AT CR2350E NR TOPEKA, ILUSGS gauge · Illinois · 279 ft³/s71°F87 mi21 hrs ago
- 22N7W-29.1d4 (SH-2)USGS gauge · Illinois63°F88 mi21 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.