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 (20 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.
- FOX RIVER NEAR MCHENRY, ILUSGS gauge · Illinois76°F12 mi21 hrs ago
- FOX RIVER NEAR NEW MUNSTER, WIUSGS gauge · Wisconsin · 469 ft³/s73°F29 mi21 hrs ago
- 77°F32 mi21 hrs ago
- 84°F39 mi21 hrs ago
- Root River at W. Eight Mile Rd near Caledonia, WIUSGS gauge · Wisconsin · 40 ft³/s71°F44 mi21 hrs ago
- ROOT RIVER AT 60TH ST NEAR CALEDONIA, WIUSGS gauge · Wisconsin71°F45 mi21 hrs ago
- DES PLAINES RIVER AT ROUTE 53 AT JOLIET, ILUSGS gauge · Illinois · 4,130 ft³/s75°F47 mi21 hrs ago
- DES PLAINES RIVER AT ROCKDALE, ILUSGS gauge · Illinois77°F49 mi22 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.6(623)Volkening Lake
Public recreation area with boat rentals, fishing & picnic spots, along with a concession stand.
13 mi from your location
4.6(653)Fox River Shores Forest Preserve
Lush riverside nature preserve featuring a boat launch, bike trail & a picnic shelter.
13 mi from your location
4.6(20)Chain O'Lakes
Series of river-linked lakes for boating & fishing, plus beaches & sheltered coves for water sports.
14 mi from your location
4.7(1,286)Lake Park
Charming 76-acre park on the banks of Lake Opeka known for its fishing, boating & golf.
16 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.


