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Extreme Heat Warning Hits Southern California as Humidity Soars

9/10/2026

6 1 Full Breakdown

Summary

Swain Highlights Humidity

U.S. climate scientist Daniel Swain reported this summer’s humidity was the highest in Southern California since 1980.
Dew points reached 76 °F on Tuesday in Long Beach, Huntington Beach and Newport Beach.
National Weather Service issued an extreme heat warning for much of Southern California Wednesday through Thursday.
Moisture from Hurricane Marie and record-warm ocean temperatures amplified the region’s humidity.

Summary

LA County Warns

Los Angeles County officials report a surge in emergency visits for heat-related illness this summer.
Dr. David Eisenman advises wetting skin and misting face, neck, forearms every five to ten minutes.
The National Weather Service’s Oxnard office issued an extreme heat warning for Thursday, Sept. 10, 10 a.m.–8 p.m.
County health officials urge limiting afternoon outdoor activity, seeking air-conditioned spaces, and checking on vulnerable people.

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Swain Highlights Humidity

U.S. climate scientist Daniel Swain reported this summer’s humidity was the highest in Southern California since 1980.
Dew points reached 76 °F on Tuesday in Long Beach, Huntington Beach and Newport Beach.
National Weather Service issued an extreme heat warning for much of Southern California Wednesday through Thursday.
Moisture from Hurricane Marie and record-warm ocean temperatures amplified the region’s humidity.

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