Prolonged Heat Wave Expected in Southern California
Prolonged Heat Wave Expected in Southern California
US · Published Sep 30, 2026
• Southern California is bracing for a significant warming trend this week, with temperatures expected to rise from the mid-90s°F (mid-30s°C) to near 100°F (37.8°C) by Wednesday through Friday.
• High pressure is strengthening over the region, leading to a prolonged heat wave.

Impact & Risks

The heat wave poses a Major HeatRisk for residents in the lower desert areas of Southern California. Prolonged exposure to high temperatures can lead to heat-related illnesses, especially for vulnerable populations such as the elderly, children, and those with pre-existing health conditions. The gusty winds near the San Gorgonio Pass and I-10 corridor may also create hazardous driving conditions and increase the risk of fire spread in dry areas.

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