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 22, 2026 (19 hrs ago).
- Cold · below 60°F · 384
- Cool · 60–69°F · 607
- Comfortable · 70–86°F · 929
- Warm · above 86°F · 215
- 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°F22 mi1 day ago
- SANTA MARGARITA R NR TEMECULA CAUSGS gauge · California · 3 ft³/s76°F28 mi1 day ago
- DEEP C NR HESPERIA CAUSGS gauge · California · 0 ft³/s79°F87 mi1 day ago
- MOJAVE R A LO NARROWS NR VICTORVILLE CAUSGS gauge · California · 4 ft³/s72°F102 mi1 day ago
- YUMA MAIN DRAIN ABOVE ARIZONA-SONORA BOUNDARYUSGS gauge · Arizona82°F152 mi1 day ago
- 80°F152 mi1 day ago
- 85°F152 mi1 day ago
- YUMA MESA OUTLET DRAIN NEAR YUMA, AZUSGS gauge · Arizona · 41 ft³/s88°F156 mi1 day ago
Nearest swimmable spots
Rated, photographed water destinations within 25 miles — pair one with the nearest sensor reading above before you go.
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.
0.9 mi from your location
4.6(567)Grandview Surf Beach
White sandy beach below cliff bluffs with a well known surfing break & clifftop parking.
0.9 mi from your location
Leucadia State Beach (Beacon's)
A steep stairway leads to this compact area of sandy shoreline, locally known as Beacon's Beach.
1.7 mi from your location
4.7(2,492)Moonlight State Beach
Sandy beach with a snack bar, playground, volleyball & tennis courts & recreation equipment rentals.
3.0 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.
5.0 mi from your location
4.8(1,477)Carlsbad State Beach
Picturesque strip of sand known for its paved pedestrian path, volleyball nets & dolphin sightings.
5.0 mi from your location
4.5(29)South Oceanside Beach
Tall, skinny palms lines this narrow stretch of sand with a 1,954-ft. wooden pier for fishing.
6.5 mi from your location
4.8(3,100)Fletcher Cove Beach Park
Picturesque park with a viewing deck, grassy area & playground, plus tables & a basketball court.
7.1 mi from your location
4.8(1,057)Sea Grove Park
Oceanside park offering lawns for relaxing & picnicking along with beach access.
9.4 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.


