Weekly swim report · August 21, 2026
Arizona swim report
On August 21, 2026 the warmest USGS water reading in Arizona was 88°F at YUMA MESA OUTLET DRAIN NEAR YUMA, AZ; 9 water-related NWS hazards are active.
Warmest water
The 5 warmest of 17 sensors reporting a water temperature in Arizona today. Station names open the official monitoring page.
- #1YUMA MESA OUTLET DRAIN NEAR YUMA, AZUSGS gauge · 41 ft³/s88°F 31°C9 hrs ago
- #285°F 30°C9 hrs ago
- #382°F 28°C9 hrs ago
- #480°F 27°C9 hrs ago
- #5VERDE RIVER ABOVE CAMP VERDE, AZUSGS gauge · 58 ft³/s79°F 26°C9 hrs ago
Active hazards in Arizona
Alerts cover counties or forecast zones — an alert for an area does not mean every river or beach inside it is affected. Times are local to the issuing office.
- Stay outSevere Thunderstorm Warning
A Severe Thunderstorm Warning is in effect for Cochise, AZ.
NWS Tucson AZ · until Aug 21, 1:15 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for New River Mesa; Rio Verde/Salt River; Superior.
NWS Phoenix AZ · until Aug 28, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Northwest Valley; Buckeye/Avondale; Deer Valley; Central Phoenix; North Phoenix/Glendale; Scottsdale/Paradise Valley; East Valley; South Mountain/Ahwatukee; Southeast Valley/Queen Creek.
NWS Phoenix AZ · until Aug 28, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Aguila Valley; Tonopah Desert; Gila Bend; Cave Creek/New River; Fountain Hills/East Mesa; Northwest Pinal County; West Pinal County; Apache Junction/Gold Canyon; Sonoran Desert Natl Monument.
NWS Phoenix AZ · until Aug 28, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Parker Valley; Kofa; Yuma; Central La Paz; Southeast Yuma County; Gila River Valley; Imperial County Southwest; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley.
NWS Phoenix AZ · until Aug 28, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for San Carlos.
NWS Phoenix AZ · until Aug 28, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Hualapai Mountains; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; Cadiz Basin; Northeast Clark County; Western Clark and Southern Nye County; Southern Clark County.
NWS Las Vegas NV · until Aug 21, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; San Bernardino County-Upper Colorado River Valley; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side.
NWS Las Vegas NV · until Aug 23, 8:00 PM
- CautionExtreme Heat Warning
An Extreme Heat Warning is in effect for Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper Gila River and Aravaipa Valleys including Clifton/Safford.
NWS Tucson AZ · until Aug 22, 8:00 PM
Where to swim in Arizona
The most-reviewed, well-rated water destinations in Arizona — check each one’s live conditions before you go.
4.6(10,044)Tempe Beach Park
Local landmark features a splash playground, boating, a baseball diamond & other athletic fields.
4.7(4,881)Lake Havasu State Park
Home of the original London Bridge with lake beaches, campsites, trails & a garden with wildlife.
4.6(2,725)Patagonia Lake State Park
Park with a 265-acre, manmade lake as its main attraction also features camping & fishing.
4.8(2,707)Watson Lake Park
Recreational lake for fishing, kayaking, canoeing & hiking, with camping & picnic facilities.
Get this report every Thursday
The warmest water in Arizona and every state, active water hazards, and where to swim this weekend — once a week. No spam — unsubscribe anytime.
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.