Extreme Heat Warning
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1225 PM MST Sun Jun 29 2025
AZZ530>533-535-536-CAZ562-565>567-569-570-301000-
/O.CON.KPSR.XH.W.0003.250630T1700Z-250702T0300Z/
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-
Including the cities of Yuma, Vicksburg Junction, Mountain
Spring, Coolidge Springs, Ripley, Vicksburg, Ligurta, Martinez
Lake, Calexico, Plaster City, Winterhaven, Salome, Palo Verde,
Coyote Wells, Salton City, Winona, Brawley, Ehrenberg, Brenda,
Midland, Palm Canyon, El Centro, Parker, Harcuvar, Ocotillo,
Fortuna Foothills, Alamorio, Quartzsite, and Blythe
1225 PM MST Sun Jun 29 2025 /1225 PM PDT Sun Jun 29 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM MST /10 AM PDT/
MONDAY TO 8 PM MST /8 PM PDT/ TUESDAY...
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
117 expected. Major Heat Risk. Overexposure can cause heat cramps
and heat exhaustion to develop and, without intervention, can lead
to heat stroke.
* WHERE...Portions of southwest Arizona and southeast California.
* WHEN...From 10 AM MST /10 AM PDT/ Monday to 8 PM MST /8 PM PDT/
Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Phoenix AZ
1225 PM MST Sun Jun 29 2025
AZZ534-538-539-553-554-559-301000-
/O.CON.KPSR.XH.W.0003.250630T1700Z-250702T0300Z/
Aguila Valley-Tonopah Desert-Gila Bend-Northwest Pinal County-
West Pinal County-Sonoran Desert Natl Monument-
Including the cities of Arlington, Gila Bend, Wickenburg,
Wintersburg, Kaka, Aguila, Casa Grande, Florence, Hassayampa,
Sentinel, Coolidge, Tonopah, Cactus Forest, and Gladden
1225 PM MST Sun Jun 29 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM MONDAY TO 8 PM
MST TUESDAY...
* WHAT...Dangerously hot conditions. Afternoon temperatures 109 to
117 expected. Major Heat Risk. Overexposure can cause heat cramps
and heat exhaustion to develop and, without intervention, can lead
to heat stroke.
* WHERE...Sonoran Desert National Monument, Aguila Valley, Tonopah
Desert, Gila Bend, Northwest Pinal County, and West Pinal County.
* WHEN...From 10 AM Monday to 8 PM MST Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Extreme Heat Warning means that a period of very hot
temperatures, even by local standards, will occur. Actions should be
taken to lessen the impact of the extreme heat.
Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when possible
and drink plenty of water.
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.
Public cooling shelters are available in some areas. Consult county
officials for more details.
&&
$$
URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
155 AM MST Sun Jun 29 2025
AZZ006-301800-
/O.CON.KFGZ.XH.W.0002.000000T0000Z-250702T0200Z/
Grand Canyon Country-
Including the cities of Supai, Grand Canyon Village, and North
Rim
155 AM MST Sun Jun 29 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM MST TUESDAY
BELOW 4000 FEET...
* WHAT...Dangerously hot conditions below 4000 feet, with daytime
temperatures ranging from 104 degrees at Havasupai Gardens, to 114
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...Until 7 PM MST Tuesday.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This warning is reserved for only the hottest days of the year and
is issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1
1/2 miles from the upper trailhead. Between the hours of 10 AM and 4
PM, hikers should be out of the canyon or at Havasupai Gardens or
Bright Angel campgrounds, physical activity is discouraged. All
hikers should have adequate gear, including a wide-brimmed hat,
sunscreen, salty snacks, sufficient water, and electrolyte mix.
Doubling your calorie intake helps maintain your energy.
Hike smart.
&&
$$
Meola
Air Quality Alert
CAZ056-061-065-010100-
Riverside County Mountains-Coachella Valley-
San Gorgonio Pass near Banning-
Including the cities of Idyllwild-Pine Cove, Indio, Palm Springs,
Cathedral City, Palm Desert, Palm Desert Country, La Quinta,
and Coachella
719 PM PDT Sun Jun 29 2025
...AIR QUALITY ALERT FOR HARMFUL FINE PARTICLE POLLUTION LEVELS DUE
TO WILDFIRE SMOKE...
* WHAT...The South Coast AQMD has issued an air quality alert due to
increased fine particle pollution from wildfire smoke.
* WHERE...The Banning Pass, San Jacinto Mountains, Lake Riverside
area, Cahuilla Reservation, and Anza area. Levels of particle
pollution can vary by time and location depending on fire activity
and local weather conditions.
* WHEN...Through 6 PM Monday.
* IMPACTS...Particles in wildfire smoke can get deep into the lungs and
cause serious health problems such as heart attacks, strokes,
asthma attacks, and difficulty breathing. Everyone can be affected,
but people with lung or heart disease, older adults, people who
are pregnant, children, and those who spend a lot of time outdoors
are at greater risk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To protect your health, if you smell or see smoke:
* Remain indoors with windows and doors closed
* Avoid intense outdoor physical activity
* Run your air conditioner and/or an air purifier
* If you must be outdoors, keep the time brief and wear a well-
fitting N-95 mask
* Do not use whole house fans or swamp coolers that bring in outside
air if you have other methods to stay cool
* Avoid other sources of pollution such as fireplaces, candles,
incense, grilling, and gasoline-powered lawn and garden equipment
* ADDITIONAL DETAILS...
To view current and forecasted air quality levels, visit the South
Coast Air Quality Management District website at aqmd.gov or
download the mobile app at www.aqmd.gov/mobileapp. Additional
details for this air quality alert may be available at
www.aqmd.gov/advisory.
$$
SS
