Extreme Heat Risk in Philadelphia, PA
Risk Level: Extreme — Score 9/10
Live Extreme Heat alert status near Philadelphia
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Live extreme heat activity around Philadelphia — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- FEMA rates Philadelphia's county as Very High risk for this hazard
- Estimated annual loss of $256M from this hazard type
- 23 events recorded in proximity in recent decades
- Active in the last 12 months (12 events)
- Average annual frequency: 11.1 events per year
Peak season: June-September
Last significant event: Excessive Heat - Central/Eastern New Jersey and nearby PA/DE, United States (2026-07-15) — 7,580,000 people exposed
Highest Risk Cities for Extreme Heats
How Philadelphia Compares
Notable Extreme Heat Events Near Philadelphia
DisasterAWARE's historical archive records 5 notable extreme heat events near Philadelphia, ranked below by impact. The most impactful: Extreme Heat - Northeastern United States (July 2025) — 54,500,000 people exposed; $15,778,747M capital exposed.
Extreme Heat - Northeastern United States
July 24, 2025 — WARNING
54,500,000 people exposed; $15,778,747M capital exposed
Excessive Heat - Central/Eastern New Jersey and nearby PA/DE, United States
July 14, 2026 — WARNING
7,580,000 people exposed; $1,749,328M capital exposed
Excessive Heat - Delaware Valley and Eastern Shore, United States
July 14, 2026 — WATCH
7,500,000 people exposed; $1,716,472M capital exposed
Heat - Philadelphia metro area, United States
May 17, 2026 — ADVISORY
4,650,000 people exposed; $1,085,537M capital exposed
Extreme Heat - Northeastern United States
August 9, 2021 — WARNING
Impact data not available
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
Philadelphia, PA 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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