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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).

Clear location
  • 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.

  1. CHICAGO SANITARY AND SHIP CANAL AT ROMEOVILLE, ILUSGS gauge · Illinois
    84°F23 mi21 hrs ago
  2. KANKAKEE R AT INFLOW OF POWER PLANT NR LORENZO, ILUSGS gauge · Illinois
    75°F23 mi21 hrs ago
  3. DES PLAINES RIVER AT CHANNAHON, ILUSGS gauge · Illinois
    79°F23 mi21 hrs ago
  4. HANSON GRAVEL PIT AT CULVERT NEAR MORRIS, ILUSGS gauge · Illinois
    79°F23 mi21 hrs ago
  5. DES PLAINES RIVER AT ROUTE 53 AT JOLIET, ILUSGS gauge · Illinois · 4,130 ft³/s
    75°F23 mi21 hrs ago
  6. DES PLAINES RIVER AT ROCKDALE, ILUSGS gauge · Illinois
    77°F24 mi22 hrs ago
  7. ILLINOIS RIVER AT SENECA, ILUSGS gauge · Illinois
    77°F26 mi22 hrs ago
  8. KANKAKEE RIVER NEAR WILMINGTON, ILUSGS gauge · Illinois · 12,500 ft³/s
    74°F28 mi21 hrs ago

Nearest swimmable spots

Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.

Riverwalk Park4.8(3,871)

Riverwalk Park

Park · Naperville, Illinois
Camping nearby

Classic urban park offering a playground, ice rink, trails, horseshoe pit & a paddle boat pier.

19 mi from your location

The Naperville Riverwalk4.8(1,222)

The Naperville Riverwalk

Park · Naperville, Illinois
Camping nearby

The "Crown Jewel" of Naperville, this 1.75-mile brick pathway follows the West Branch of the DuPage River past fountains, covered bridges, and outdoor sculpture. Built by community volunteers in 1981 for the city's 150th anniversary, highlights include Paddleboat Quarry, the Dandelion Fountain, a 72-bell Millennium Carillon in Moser Tower, and Centennial Beach — a historic swimming area with sand volleyball. Dogs welcome on leash; bikes and scooters are not permitted on the Riverwalk path.

19 mi from your location

Whalon Lake4.7(436)

Whalon Lake

Reservoir · Naperville, Illinois
Camping nearbyDog-friendly

Nature park featuring a quarry lake, prairie & wetlands, plus fishing, boating, trails & a dog park.

21 mi from your location

Des Plaines River4.2(15)

Des Plaines River

River · Channahon, Illinois

River running through plane forests & marshland, popular for canoeing & fishing for carp or bass.

23 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.