California Weather & Safety Alerts
5 active alerts · Updated 2026-03-16
Data source: National Weather Service (NWS) Last verified: 2026-03-16
Extreme Heat
Heat Advisory (ADVISORY) — expires March 16, 2026 at 9:00 PM GMT+4
Areas affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
Heat Advisory issued March 15 at 9:43PM PDT until March 20 at 8:00PM PDT by NWS San Francisco CA
WHAT…High temperatures in the low to mid 90s across the interior and 80s along the coastline.
WHERE…The Bay Area and Central Coast.
WHEN…From 10 AM Monday to 8 PM PDT Friday.
IMPACTS…This level of heat affects most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health systems and in heat-sensitive industries. Hot conditions can cause heat illnesses.
ADDITIONAL DETAILS…Much above normal temperatures in the upper 80s to mid 90s are expected this week across the Bay Area and Central Coast. Portions of the interior Central Coast may reach the upper 90s starting mid to late week. Overnight lows in the upper 50s to low 60s will offer some relief to the lower elevations but will offer minimal…
What to do: Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures …
Source: NWS San Francisco CA
Heat Advisory (ADVISORY) — expires March 16, 2026 at 5:15 PM GMT+4
Areas affected: San Diego County Coastal Areas; San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; Santa Ana Mountains and Foothills; Orange County Coastal; Orange County Inland
Heat Advisory issued March 15 at 9:11PM PDT until March 20 at 8:00PM PDT by NWS San Diego CA
WHAT…Hot conditions with temperatures 80 to 90 degrees near the coast and 95 to 105 inland. Hottest weather likely on Thursday and Friday.
WHERE…Orange County Coastal Areas, Orange County Inland Areas, San Bernardino and Riverside County Valleys-The Inland Empire, San Diego County Coastal Areas, San Diego County Valleys, and Santa Ana Mountains and Foothills.
WHEN…From 10 AM Monday to 8 PM PDT Friday.
IMPACTS…Hot temperatures may cause heat illnesses. Increased heat impacts due to long-duration early season heat wave.
ADDITIONAL DETAILS…High temperatures this week will be 20 to 30 degrees above normal for this time of year. Record breaking heat is likely.
What to do: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Reduce outdoor recreation, especially each afternoon. To reduce risk during outdoor work, take frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Source: NWS San Diego CA
Heat Advisory (ADVISORY) — expires March 16, 2026 at 5:00 PM GMT+4
Areas affected: Santa Clarita Valley; Santa Lucia Mountains; San Luis Obispo County Mountains; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
Heat Advisory issued March 15 at 2:10PM PDT until March 17 at 10:00AM PDT by NWS Los Angeles/Oxnard CA
WHAT…For the Heat Advisory, temperatures between 90 and 98 expected. For the Extreme Heat Warning, dangerously hot conditions with temperatures between 96 and 104 expected.
WHERE…A portion of southwest California.
WHEN…For the Heat Advisory, from 10 AM Monday to 10 AM PDT Tuesday. For the Extreme Heat Warning, from 10 AM Tuesday to 8 PM PDT Friday.
IMPACTS…There is a high risk for dangerous heat illness for anyone, especially for the very young, the very old, those without air conditioning, and those active outdoors.
ADDITIONAL DETAILS…Warm overnight low temperatures will contribute to the heat risk, especially in the mountain and foothill locations.
What to do: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Source: NWS Los Angeles/Oxnard CA
Heat Advisory (ADVISORY) — expires March 16, 2026 at 5:00 PM GMT+4
Areas affected: Catalina and Santa Barbara Islands; San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Ventura County Beaches; Ventura County Inland Coast; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills
Heat Advisory issued March 15 at 2:10PM PDT until March 20 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
WHAT…Temperatures between 85 and 95 expected.
WHERE…A portion of southwest California.
WHEN…From 10 AM Monday to 8 PM PDT Friday.
IMPACTS…There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.
ADDITIONAL DETAILS…Warm overnight low temperatures will contribute to the heat risk, especially in the mountain and foothill locations.
What to do: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Source: NWS Los Angeles/Oxnard CA
Heat Advisory (ADVISORY) — expires March 16, 2026 at 5:00 PM GMT+4
Areas affected: San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands
Heat Advisory issued March 15 at 2:10PM PDT until March 20 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
WHAT…Temperatures between 80 and 90 expected.
WHERE…San Miguel and Santa Rosa Islands and Santa Cruz and Anacapa Islands.
WHEN…From 10 AM Tuesday to 8 PM PDT Friday.
IMPACTS…There is a high risk for heat illness for sensitive populations including the very young, the very old, those without air conditioning, and those active outdoors.
What to do: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Source: NWS Los Angeles/Oxnard CA
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