9
Extreme
Extreme Heat Risk in Philadelphia, PA
Risk Level: Extreme — Score 9/10
FEMA: 9Historical: 10
Key Risk Factors
- FEMA rates Philadelphia's county as Very High risk for this hazard
- Estimated annual loss of $256M from this hazard type
- 14 events recorded in proximity in recent decades
- 3 event(s) in the last 12 months
- Average annual frequency: 11.1 events per year
Peak season: June-September
Last significant event: Extreme Heat - Northeastern United States (2025-07-25) — 54,500,000 people exposed
Highest Risk Cities for Extreme Heats
4
Philadelphia, PA
FEMA: 9Historical: 10
How Philadelphia Compares
Loading chart...
Notable Extreme Heat Events Near Philadelphia
Extreme Heat - Northeastern United States
August 9, 2021 — WARNING
Impact data not available
Extreme Heat - Northeastern United States
July 24, 2025 — WARNING
54,500,000 people exposed; $15,778,747M capital exposed
Extreme Cold - United States
January 16, 2025 — WARNING
158,777,000 people exposed; $26,054,772M capital exposed
Extreme Heat - Southern and Eastern United States
June 30, 2024 — WARNING
114,000,000 people exposed; $23,632,231M capital exposed
Extreme Heat - Eastern United States
June 22, 2025 — WARNING
91,006,790 people exposed; $21,897,084M 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
Earthquake Risk in Philadelphia
Score: 7/10
Wildfire Risk in Philadelphia
Score: 1/10
Hurricane Risk in Philadelphia
Score: 7/10
Flood Risk in Philadelphia
Score: 9/10
Tornado Risk in Philadelphia
Score: 7/10
Winter Storm Risk in Philadelphia
Score: 9/10
Landslide Risk in Philadelphia
Score: 3/10
Drought Risk in Philadelphia
Score: 1/10
High Wind Risk in Philadelphia
Score: 7/10
Tsunami Risk in Philadelphia
Score: 0/10
Extreme Heat Risk in New York, NY
Score: 7/10
Extreme Heat Risk in Baltimore, MD
Score: 7/10
Extreme Heat Risk in Washington, DC
Score: 7/10
Monitor Extreme Heat Risk in Real Time
Get real-time extreme heat alerts for Philadelphia, PA and hundreds of other locations with DisasterAWARE's enterprise platform.