Extreme Heat Warning Issued for Los Angeles and Ventura Counties Through Friday
This alert is no longer in effect.
NOAA issued it on April 2, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
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The National Weather Service has issued an Extreme Heat Warning for Southwest California, with temperatures expected to reach up to 104 degrees through Friday evening.
Read this weather record in 30 seconds
- Record type
- Extreme Heat Warning
- Affected area
- Southwest California
- Issued
- April 2, 2026
- Issuing authority
- NWS Los Angeles Oxnard
Heat notices are time-bound and location-specific. Confirm the current forecast and local public-health guidance before relying on this archived record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Southwest California.
Alert Details
The National Weather Service in Los Angeles/Oxnard CA has issued an Extreme Heat Warning (NWS Alert Code: XHW) for a significant portion of southwest California. This alert follows an initial Heat Advisory as temperatures are expected to climb to dangerous levels throughout the week.
Affected Areas
The warning covers a broad geographic range including:
- Los Angeles County: Inland Coast including Downtown Los Angeles, Santa Clarita Valley, San Fernando Valley (Western and Eastern), San Gabriel Valley, Calabasas, Agoura Hills, and the Santa Monica Mountains Recreational Area.
- Ventura County: Central and Southeastern Valleys, Ojai Valley, Lake Casitas, and the Santa Susana Mountains.
- Mountain Regions and Corridors: Santa Lucia Mountains, San Luis Obispo County Mountains, Santa Ynez Mountains (Western and Eastern Ranges), Santa Barbara County Interior Mountains, Southern Ventura County Mountains, the Interstate 5 Corridor, and the San Gabriel Mountains (Western and Eastern) including the Highway 14 Corridor.
What You Should Do
Residents are urged to take the following safety precautions to mitigate the risk of heat-related illness:
- Drink plenty of fluids and stay hydrated.
- Remain in air-conditioned rooms whenever possible.
- Stay out of the direct sun and wear lightweight, loose-fitting clothing.
- Check up on relatives and neighbors, especially the elderly.
- Limit strenuous outdoor activities to the early morning or evening hours.
- Monitor for symptoms of heat exhaustion and heat stroke; take immediate action if symptoms appear.
Expected Conditions
- Temperatures: During the Heat Advisory phase, temperatures are expected to range between 90 and 98 degrees. During the Extreme Heat Warning phase, dangerously hot conditions will see temperatures rise to between 96 and 104 degrees.
- Impacts: There is a high risk for dangerous heat illness for the general population, with increased vulnerability for the very young, the elderly, those without access to air conditioning, and individuals active outdoors.
Timeline
- Heat Advisory: Effective from 10:00 AM Monday to 10:00 AM PDT Tuesday.
- Extreme Heat Warning: Effective from 10:00 AM Tuesday to 8:00 PM PDT Friday.
Original source: NOAA Official Notice ↗
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