Extreme Heat Warning
NWS San Diego CA
Archived copy, taken Thu, Oct 1, 2026, 5:18 AM PDT. Read this alert at the National Weather Service →
Extreme Heat Warning issued October 1 at 12:29AM PDT until October 8 at 8:00PM PDT by NWS San Diego CA
- Issued
- Thu, Oct 1, 2026, 12:29 AM PDT
- Effective
- Thu, Oct 1, 2026, 12:29 AM PDT
- Ends
- Thu, Oct 8, 2026, 8:00 PM PDT
- Severity
- Severe
- Urgency
- Expected
- Certainty
- Likely
- Status
- Actual
- Message type
- Alert
AreaSan Bernardino and Riverside County Valleys-The Inland Empire
- WHAT...Dangerously hot conditions with high temperatures in the upper 90s to 106 expected. Nights will be very warm with low temperatures mostly in the mid 60s to lower 70s.
- WHERE...San Bernardino and Riverside County Valleys-The Inland Empire.
- WHEN...From 10 AM Friday to 8 PM PDT Thursday.
- IMPACTS...Heat related illnesses increase significantly during extreme heat events.
What the Weather Service says to do
Drink 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.