Live · updated daily from USGS
Swimmable water near you
2,039 USGS sensors are reporting a live water temperature right now, the newest reading from October 19, 2026 (18 hrs ago).
- Cold · below 60°F · 1,419
- Cool · 60–69°F · 378
- Comfortable · 70–86°F · 239
- Warm · above 86°F · 3
A map of the United States with one coloured dot per USGS sensor reporting a live water temperature. The readings are listed below.
Warmest readings right now
The 10 warmest sensor readings in today’s snapshot — each links to its state’s full live table.
- #1 · NevadaBIG WARM SPGS NR DUCKWATER, NVas of 18 hrs ago90°F
- #2 · CaliforniaHOT C A FLUME NR MAMMOTH LAKES CAas of 19 hrs ago89°F
- #3 · ArizonaYUMA MESA OUTLET DRAIN NEAR YUMA, AZas of 18 hrs ago87°F
- #4 · FloridaC-8 CANAL UPSTREAM OF S-28 AT NORTH MIAMI, FLas of 1 day ago86°F
- #5 · FloridaG -3908as of 18 hrs ago86°F
- #6 · FloridaSW 122 AVE CANAL AT SW 202ND ST NR GOULDS, FLas of 18 hrs ago86°F
- #7 · FloridaBLACK CREEK CANAL UPSTREAM OF S-21 AT MIAMI, FLas of 1 day ago86°F
- #8 · FloridaBLACK CREEK CANAL WEST OF 127 AVE NR GOULDS, FLas of 18 hrs ago85°F
- #9 · FloridaSW 122 AVE CANAL AT SW 208TH ST NR GOULDS, FLas of 19 hrs ago84°F
- #10 · FloridaCURRY CREEK AT HIGHWAY 41 AT NOKOMIS FLas of 18 hrs ago82°F
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.