VENTURA COUNTY — The National Weather Service in Los Angeles/Oxnard has issued a widespread extreme heat warning for … through Thursday, July 16, 2026. Temperatures in the interior valleys and mountain areas are expected to exceed the 100-degree mark for a prolonged period, with relatively poor overnight recovery in the mountains and foothills. A heat advisory has been issued for the coastal plains, where temperatures are expected to reach between 90 and 100 degrees.
High temperatures may create a dangerous situation in which heat-related illness is possible. Residents are encouraged to: drink plenty of fluids, stay in air-conditioned rooms, stay out of the sun, check on relatives and neighbors, take extra precautions if working or spending time outside, and wear lightweight and loose-fitting clothing. When possible, reschedule strenuous activities to early morning or evening.