33°58'N / 117°27'O / Altitude 261 m / 13:34 16/03/2026, America/Los_Angeles (UTC-7)
De: 16/03/2026, 00:04
Para: 16/03/2026, 17:00
* WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...From Wednesday morning through Sunday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Afternoon high temperatures between 103 and 109 degrees.
Riverside
An Extreme Heat Watch means that a period of very hot
temperatures, even by local standards, may 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.
NWS Phoenix AZ
16/03/2026, 00:04De: 16/03/2026, 09:16
Para: 16/03/2026, 22:30
* WHAT...Dangerously hot conditions with temperatures 104 to 112 degrees expected, high temperatures locally up to 114 possible Thursday/Friday. Low temperatures will be in the low to mid-70s. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...From 10 AM Wednesday to 8 PM PDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...High temperatures this week will be 20 to 30 degrees above normal for this time of year. Record breaking heat is likely. Widespread Major HeatRisk expected.
RiversideDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.NWS San Diego CA16/03/2026, 09:16
De: 16/03/2026, 09:16
Para: 16/03/2026, 22:30
* WHAT...High temperatures in the lower to mid 90s below 4500 feet and in the 80s from 4500 to 6500 feet possible. Overnight low temperatures will be in the low to mid-60s. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...From 10 AM Wednesday to 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...High temperatures this week will be 20 to 30 degrees above normal for this time of year. Record breaking heat is likely. Widespread Moderate HeatRisk expected.
RiversideDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.NWS San Diego CA16/03/2026, 09:16De: 16/03/2026, 10:00
Para: 16/03/2026, 22:30
* WHAT...Hot conditions with temperatures 80 to 90 degrees near the coast and 95 to 102, locally up to 105 degrees inland. Overnight lows will be in the 60s. * WHERE...Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Hot temperatures may cause heat illnesses. Increased heat impacts due to long-duration early season heat wave. * ADDITIONAL DETAILS...High temperatures this week will be 20 to 30 degrees above normal for this time of year. Record breaking heat is likely. Widespread Moderate to locally Major HeatRisk is expected.
San Bernardino and Riverside County Valleys-The Inland Empire,RiversideDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.NWS San Diego CA16/03/2026, 09:16