33°44'N / 117°10'O / Altitude 439 m / 13:16 15/03/2026, America/Los_Angeles (UTC-7)
De: 15/03/2026, 00:33
Para: 15/03/2026, 17:00
* WHERE...Portions of southwest Arizona and southeast and southern California. * WHEN...From Wednesday morning through Sunday, March 22. * 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
15/03/2026, 00:33De: 15/03/2026, 11:44
Para: 15/03/2026, 22:00
* WHAT...Hot conditions with temperatures 85 to 95 possible below 5500 ft elevation. * WHERE...Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN...From Thursday morning through Friday evening. * 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.
RiversideDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Reduce outdoor recreation, especially each afternoon.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.NWS San Diego CA15/03/2026, 11:44De: 15/03/2026, 11:44
Para: 15/03/2026, 22:00
* WHAT...Dangerously hot conditions with temperatures 105 to 110 possible. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...From Thursday morning through Friday evening. * 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.
RiversideDrink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Reduce outdoor recreation, especially each afternoon.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.NWS San Diego CA15/03/2026, 11:44
De: 15/03/2026, 11:44
Para: 15/03/2026, 22:00
* WHAT...Hot conditions with temperatures 80 to 90 degrees near the coast and 95 to 105 inland. Hottest weather likely on Thursday and Friday. * 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...From 10 AM Monday to 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.
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.
Reduce outdoor recreation, especially each afternoon.
To reduce risk during outdoor work, take 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 San Diego CA15/03/2026, 11:44