33°36'N / 114°35'O / Altitud 82 m / 06:23 09/09/2026, America/Los_Angeles (UTC-7)
del: 09/09/2026, 02:58
a: 09/09/2026, 15:30
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 100 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 80s to mid 90s expected. * WHERE...Santa Ana Mountains and Foothills. * WHEN...For the Extreme Heat Warning, until 8 PM PDT this evening. For the Heat Advisory, from 8 PM this evening to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit relief from the heat.
Riverside
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
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 CA
09/09/2026, 02:58del: 09/09/2026, 02:58
a: 09/09/2026, 15:30
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures of 104 to 110 with low temperatures in the 70s and lower 80s expected. For the Heat Advisory, high temperatures in the upper 90s to 105 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...For the Extreme Heat Warning, until 8 PM PDT this evening. For the Heat Advisory, from 8 PM this evening to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major HeatRisk through today. Warm overnight temperatures will limit 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.NWS San Diego CA09/09/2026, 02:58del: 09/09/2026, 10:00
a: 09/09/2026, 15:30
* WHAT...Dangerously hot conditions with high temperatures of 110 to 114 expected with low temperatures in the 80s expected. * WHERE...Coachella Valley, San Diego County Deserts, and San Gorgonio Pass near Banning. * WHEN...From 10 AM this morning to 8 PM PDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit 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.NWS San Diego CA09/09/2026, 02:58del: 09/09/2026, 10:00
a: 09/09/2026, 16:00
* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 102 to 112 expected. Major Heat Risk. * WHERE...In Arizona, Central La Paz and Parker Valley. In California, Chuckwalla Valley and Palo Verde Valley. * WHEN...From 10 AM MST /10 AM PDT/ this morning to 8 PM MST /8 PM PDT/ Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke.
Palo Verde Valley,RiversideAn 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 AZ09/09/2026, 04:22
del: 09/09/2026, 02:58
a: 09/09/2026, 15:30
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures of 104 to 110 with low temperatures in the 70s and lower 80s expected. For the Heat Advisory, high temperatures in the upper 90s to 105 expected. * WHERE...San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN...For the Extreme Heat Warning, until 8 PM PDT this evening. For the Heat Advisory, from 8 PM this evening to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Major HeatRisk through today. Warm overnight temperatures will limit 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.NWS San Diego CA09/09/2026, 02:58del: 09/09/2026, 02:58
a: 09/09/2026, 15:30
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with high temperatures in the 90s to near 100 with low temperatures in the 70s expected. For the Heat Advisory, high temperatures in the mid 80s to mid 90s expected. * WHERE...Santa Ana Mountains and Foothills. * WHEN...For the Extreme Heat Warning, until 8 PM PDT this evening. For the Heat Advisory, from 8 PM this evening to 8 PM PDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight temperatures will limit 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.
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 CA09/09/2026, 02:58del: 09/09/2026, 02:58
a: 09/09/2026, 15:30
* WHAT...High temperatures in the 90s below 5500 feet expected. * WHERE...Riverside County Mountains and San Diego County Mountains below 5500 feet. * WHEN...Until 8 PM PDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Moderate HeatRisk. Warm overnight temperatures will limit 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.NWS San Diego CA09/09/2026, 02:58