33°48'bắc / 117°8'tây / Cao độ 449 m / 15:13 17/03/2026, America/Los_Angeles (UTC-7)
From: 17/03/2026, 10:31
To: 18/03/2026, 03:00
* WHAT...Dangerously hot conditions. Afternoon temperatures 100 to 109 expected. 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 and southern California.
* WHEN...From 11 AM MST /11 AM PDT/ Wednesday to 8 PM MST /8 PM PDT/ Sunday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat events.
Riverside
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.
NWS Phoenix AZ
17/03/2026, 10:31From: 17/03/2026, 12:28
To: 17/03/2026, 22:15
* WHAT...Dangerously hot conditions with high temperatures of 105 to 110 expected.
* WHERE...Coachella Valley.
* WHEN...From 10 AM Wednesday to 8 PM PDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat events.
* ADDITIONAL DETAILS...Overnight low temperatures will fall to the low to mid-70s reducing overnight relief from the heat.
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.
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 San Diego CA17/03/2026, 12:28From: 17/03/2026, 12:28
To: 17/03/2026, 22:15
* WHAT...Dangerously hot conditions with high temperatures of 98 to 108 expected.
* WHERE...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...Overnight low temperatures will fall to the low to mid-70s will reduce overnight relief from the heat.
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.
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 San Diego CA17/03/2026, 12:28
From: 17/03/2026, 12:28
To: 17/03/2026, 22:15
* WHAT...High temperatures in the 80s to mid 90s below 6500 feet expected.
* WHERE...Riverside County Mountains.
* WHEN...From 10 AM Wednesday to 8 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
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 CA17/03/2026, 12:28From: 17/03/2026, 12:28
To: 17/03/2026, 22:15
* WHAT...High temperatures in the 90s.
* WHERE...Santa Ana Mountains and Foothills.
* WHEN...Until 8 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
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 CA17/03/2026, 12:28From: 17/03/2026, 12:28
To: 17/03/2026, 22:15
* WHAT...High temperatures in the upper 90s to 102 degrees.
* WHERE...San Bernardino and Riverside County Valleys-The Inland Empire.
* WHEN...Until 8 PM PDT Friday.
* IMPACTS...Hot temperatures may cause heat illnesses.
Riverside,San Bernardino and Riverside County Valleys-The Inland EmpireDrink 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 CA17/03/2026, 12:28