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 (8 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.
- SALT CREEK NEAR FARMER CITY, ILUSGS gauge · Illinois68°F37 mi8 hrs ago
- NORTH FORK SALT CREEK NEAR DE WITT, ILUSGS gauge · Illinois · 152 ft³/s69°F43 mi8 hrs ago
- IROQUOIS RIVER NEAR FORESMAN, INUSGS gauge · Indiana · 360 ft³/s73°F47 mi8 hrs ago
- KANKAKEE RIVER AT CUSTER PARK, ILUSGS gauge · Illinois74°F49 mi9 hrs ago
- KANKAKEE RIVER NEAR WILMINGTON, ILUSGS gauge · Illinois · 12,500 ft³/s74°F56 mi8 hrs ago
- HANSON GRAVEL PIT AT CULVERT NEAR MORRIS, ILUSGS gauge · Illinois79°F58 mi9 hrs ago
- ILLINOIS RIVER AT SENECA, ILUSGS gauge · Illinois77°F59 mi9 hrs ago
- KANKAKEE RIVER AT SHELBY, INUSGS gauge · Indiana · 3,070 ft³/s71°F59 mi8 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.