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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 (17 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. FOX RIVER NEAR MCHENRY, ILUSGS gauge · Illinois
    76°F10 mi17 hrs ago
  2. FOX RIVER NEAR NEW MUNSTER, WIUSGS gauge · Wisconsin · 469 ft³/s
    73°F12 mi18 hrs ago
  3. Root River at W. Eight Mile Rd near Caledonia, WIUSGS gauge · Wisconsin · 40 ft³/s
    71°F29 mi18 hrs ago
  4. ROOT RIVER AT 60TH ST NEAR CALEDONIA, WIUSGS gauge · Wisconsin
    71°F30 mi18 hrs ago
  5. WK-06/19E/31-1301USGS gauge · Wisconsin
    51°F35 mi18 hrs ago
  6. WILSON PARK CREEK @ GMIA OUTFALL 7 @ MILWAUKEE,WIUSGS gauge · Wisconsin · 1 ft³/s
    69°F38 mi18 hrs ago
  7. MILWAUKEE RIVER AT MILWAUKEE, WIUSGS gauge · Wisconsin · 282 ft³/s
    73°F47 mi18 hrs ago
  8. CHICAGO S & S CANAL AT WESTERN AVE AT CHICAGO, ILUSGS gauge · Illinois
    77°F48 mi17 hrs ago

Nearest swimmable spots

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

Chain O'Lakes4.6(20)

Chain O'Lakes

Lake · Grant Township, Illinois

Series of river-linked lakes for boating & fishing, plus beaches & sheltered coves for water sports.

3.0 mi from your location

Loon Lake4.6(21)

Loon Lake

Lake · Antioch Township, Illinois

Recreational lake with a launch used for boating, fishing & other water activities.

4.0 mi from your location

Geneva Lake4.7(96)

Geneva Lake

Lake · Wisconsin

A walking path encircles this large, tranquil lake, a popular place for swimming & water sports.

20 mi from your location

Fox River4.4(334)

Fox River

River · Illinois

The Fox River is a 202-mile-long tributary of the Illinois River, flowing from southeastern Wisconsin to Ottawa, Illinois in the United States. The Wisconsin section was known as the Pishtaka River in the 19th century. There is another Fox River in Wisconsin that flows through Lake Winnebago into Green Bay.

20 mi from your location

Fox River Shores Forest Preserve4.6(653)

Fox River Shores Forest Preserve

Nature preserve · Carpentersville, Illinois

Lush riverside nature preserve featuring a boat launch, bike trail & a picnic shelter.

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.