Heat Advisory
NWS San Diego CA
Archived copy, taken Mon, Sep 7, 2026, 7:21 PM PDT. Read this alert at the National Weather Service →
Heat Advisory issued September 7 at 11:09AM PDT until September 10 at 8:00PM PDT by NWS San Diego CA
- Issued
- Mon, Sep 7, 2026, 11:09 AM PDT
- Effective
- Mon, Sep 7, 2026, 11:09 AM PDT
- Ends
- Thu, Sep 10, 2026, 8:00 PM PDT
- Severity
- Moderate
- Urgency
- Expected
- Certainty
- Likely
- Status
- Actual
- Message type
- Alert
AreaSan Bernardino and Riverside County Valleys-The Inland Empire
- WHAT...High temperatures in the upper 90s to 103 degrees expected overnight low temperatures in the mid-70s.
- WHERE...San Bernardino and Riverside County Valleys-The Inland Empire.
- WHEN...From 10 AM Tuesday to 8 PM PDT Thursday.
- IMPACTS...Hot temperatures may cause heat illnesses.
- ADDITIONAL DETAILS...Moderate to locally major HeatRisk. Elevated low temperatures will limit overnight relief from the heat.
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.