10/01/2026
There are two active alerts for San Diego, California right now β ordered by severity:
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π¨ Extreme Heat Warning (Higher Severity)
In effect: Friday, October 2 at 10:00 AM through Thursday, October 8 at 8:00 PM PDT
Where: San Diego County Coastal Areas
Conditions: Highs from the mid 80s to lower 90s near the coast, mid 90s to around 100 for mesas and higher coastal terrain. Overnight lows mostly in the lower to mid 70s.
Impacts: Significantly increased risk of heat-related illness
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β οΈ Extreme Heat Watch (Active Concurrently)
In effect: Friday, October 2 at 10:00 AM through Wednesday, October 7 at 9:00 PM PDT
Where: San Diego County Coastal Areas, San Diego County Valleys, Orange County Coastal & Inland Areas, San Bernardino & Riverside County Valleys (Inland Empire), and Santa Ana Mountains and Foothills
Conditions: Highs ranging from around 90 near the coast to the upper 90sβupper 100s in the valleys. Overnight lows warming into the lower to mid 70s through the weekend and into next week.
Impacts: Long-duration heat wave with Moderate or greater HeatRisk for coast and valleys; Major to Extreme HeatRisk for inland coastal areas
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π‘οΈ Safety Guidance (from the U.S. National Weather Service)
Drink plenty of fluids and stay in air-conditioned spaces
Stay out of the sun during peak heat hours
Check on relatives and neighbors
Never leave children or pets in unattended vehicles β car interiors can reach lethal temperatures within minutes
Source: U.S. National Weather Service via AccuWeather