Extreme Heat Risk in Seattle, WA
Risk Level: Very High — Score 7/10
Live Extreme Heat alert status near Seattle
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Live extreme heat activity around Seattle — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- FEMA rates Seattle's county as Relatively High risk
- Estimated annual loss of $19M from this hazard type
- 12 events recorded in proximity in recent decades
- Active in the last 12 months (7 events)
- Average annual frequency: 3.8 events per year
Peak season: June-September
Last significant event: Heat - Seattle and Puget Sound region, Washington, United States (2026-06-22) — 3,870,000 people exposed
Highest Risk Cities for Extreme Heats
How Seattle Compares
Notable Extreme Heat Events Near Seattle
DisasterAWARE's historical archive records 5 notable extreme heat events near Seattle, ranked below by impact. The most impactful: Heat - Seattle and Puget Sound region, Washington, United States (June 2026) — 3,870,000 people exposed; $740,167M capital exposed.
Heat - Seattle and Puget Sound region, Washington, United States
June 21, 2026 — ADVISORY
3,870,000 people exposed; $740,167M capital exposed
Cold Weather - Puget Sound lowlands, Washington, United States
January 24, 2026 — ADVISORY
3,510,000 people exposed; $710,011M capital exposed
Cold Weather - Puget Sound / Seattle area, Washington, United States
January 23, 2026 — ADVISORY
3,120,000 people exposed; $651,192M capital exposed
Excessive Heat - Puget Sound Foothills and Valleys, Washington, United States
August 21, 2025 — WARNING
837,004 people exposed; $95,103M capital exposed
Heat - Foothills and Valleys of Western Washington, United States
September 1, 2025 — ADVISORY
837,004 people exposed; $95,103M 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
Seattle, WA 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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