NowWire · AI-assisted reporting summary · September 30, 2026 UTC
The National Weather Service issued an extreme heat watch for the Orange County and Santa Ana Mountains area, taking effect from Friday at 10 a.m. through Wednesday, October 7, at 9 p.m. Forecasters report that dangerously hot conditions could bring temperatures ranging from around 90 degrees near the coast to upper 90s and 108 degrees in the valleys. [1]
A long-duration heat wave is expected to persist through much of next week, bringing moderate to extreme HeatRisk levels to coastal areas, valleys, and inland zones. Overnight temperatures are also expected to remain warm in the lower to mid 70s, increasing the risk of heat-related illnesses. [1]
Sources
- Extreme heat watch issued for the Orange County and Santa Ana Mountains area from Friday to Wednesday — 2026-09-30T10:06:41Z