Extreme Heat Risk in San Francisco, CA
Risk Level: High — Score 5/10
Live Extreme Heat alert status near San Francisco
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Live extreme heat activity around San Francisco — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- Moderate risk rating based on FEMA National Risk Index
- Estimated annual loss of $5M from this hazard type
- 22 events recorded in proximity in recent decades
- Active in the last 12 months (17 events)
- Average annual frequency: 3.5 events per year
Peak season: June-September
Last significant event: Cold Weather - San Francisco Bay and North Monterey Coast, United States (2026-02-20) — 4,350,000 people exposed
Highest Risk Cities for Extreme Heats
How San Francisco Compares
Notable Extreme Heat Events Near San Francisco
DisasterAWARE's historical archive records 5 notable extreme heat events near San Francisco, ranked below by impact. The most impactful: Extreme Cold - San Francisco Bay Area _ Central Coast, California, United States (January 2026) — 6,570,000 people exposed; $1,689,571M capital exposed.
Extreme Cold - San Francisco Bay Area _ Central Coast, California, United States
January 8, 2026 — WATCH
6,570,000 people exposed; $1,689,571M capital exposed
Heat - San Francisco Bay Area, United States
September 22, 2025 — ADVISORY
5,800,000 people exposed; $1,570,080M capital exposed
Heat - San Francisco Bay Area, United States
September 22, 2025 — ADVISORY
5,800,000 people exposed; $1,570,080M capital exposed
Cold Weather - San Francisco Bay and North Monterey Coast, United States
February 19, 2026 — ADVISORY
4,350,000 people exposed; $1,186,959M capital exposed
Cold Weather - San Francisco Bay Area _ Monterey Coast, United States
January 9, 2026 — ADVISORY
4,310,000 people exposed; $1,053,093M capital exposed
Extreme Heat Preparedness Tips
- 1.Stay hydrated — drink water regularly even if you don’t feel thirsty
- 2.Avoid outdoor activities during peak heat hours (10 AM – 4 PM)
- 3.Know the signs of heat exhaustion and heat stroke
- 4.Check on elderly neighbors and those without air conditioning
- 5.Never leave children or pets in a parked vehicle
Related Pages
How this data is built
San Francisco, CA extreme heat risk combines Historical Event Intelligence with authoritative hazard modeling from the Geospatial Intelligence Layers catalog. Live extreme heat monitoring is available through the Event Intelligence API and the DisasterAWARE Platform.
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