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).
- 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.
- TECOLOTE C AB FOOTBRIDGE NR SAN DIEGO CAUSGS gauge · California · 0 ft³/s68°F15 mi18 hrs ago
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F33 mi18 hrs ago
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F93 mi18 hrs ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F109 mi17 hrs ago
- YUMA MAIN DRAIN ABOVE ARIZONA-SONORA BOUNDARYUSGS gauge · Arizona82°F143 mi18 hrs ago
- 80°F143 mi18 hrs ago
- 85°F143 mi18 hrs ago
- YUMA MESA OUTLET DRAIN NEAR YUMA, AZUSGS gauge · Arizona · 41 ft³/s88°F147 mi18 hrs ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
4.8(3,100)Fletcher Cove Beach Park
Picturesque park with a viewing deck, grassy area & playground, plus tables & a basketball court.
6.0 mi from your location
4.8(1,057)Sea Grove Park
Oceanside park offering lawns for relaxing & picnicking along with beach access.
6.3 mi from your location
4.6(1,528)San Elijo State Beach
2-mile stretch of sand with large campgrounds popular for swimming, surfing, snorkeling & picnics.
6.8 mi from your location
4.7(2,492)Moonlight State Beach
Sandy beach with a snack bar, playground, volleyball & tennis courts & recreation equipment rentals.
8.1 mi from your location
4.6(225)Leucadia State Beach (Beacon's)
A steep stairway leads to this compact area of sandy shoreline, locally known as Beacon's Beach.
9.0 mi from your location
4.6(567)Grandview Surf Beach
White sandy beach below cliff bluffs with a well known surfing break & clifftop parking.
9.7 mi from your location
4.6(2,072)South Carlsbad State Beach Campground
200+ clifftop campsites with picnic tables & stairs to a beach park with 40+ acres for watersports.
11 mi from your location
4.8(3,445)La Jolla Tide Pools
At low tide, this scenic, rocky beach features pools of water with sea life such as crabs & fish.
13 mi from your location
4.6(2,357)De Anza Cove Park
Beachfront park offering volleyball courts, picnic space, a multiuse path, boat launch & playground.
14 mi from your location
4.5(1,586)Santee Lakes Recreation Preserve
Staycation spot for locals with 7 man-made lakes for camping, boating, fishing & picnics.
14 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.