9
Extreme
Extreme Heat Risk in Phoenix, AZ
Risk Level: Extreme — Score 9/10
FEMA: 9Historical: 10
Key Risk Factors
- FEMA rates Phoenix's county as Very High risk for this hazard
- Estimated annual loss of $958M from this hazard type
- 6 events on record in proximity
- 4 event(s) in the last 12 months
- Average annual frequency: 19.8 events per year
Peak season: June-September
Last significant event: Excessive Heat - Sonoran Desert Region, Arizona, United States (2025-08-20) — 1,030,000 people exposed
Highest Risk Cities for Extreme Heats
3
Phoenix, AZ
FEMA: 9Historical: 10
How Phoenix Compares
Loading chart...
Notable Extreme Heat Events Near Phoenix
Excessive Heat - Sonoran Desert Region, Arizona, United States
August 19, 2025 — WARNING
1,030,000 people exposed; $70,479M capital exposed
Extreme Heat - Arizona Desert, United States
June 14, 2022 — WARNING
Impact data not available
Extreme Heat - Southwest United States
June 24, 2025 — WARNING
5,966,290 people exposed; $663,297M capital exposed
Exterme Heat - Western United States
June 8, 2025 — WARNING
6,795,200 people exposed; $717,822M capital exposed
Extreme Heat - Southwest United States
July 6, 2025 — WARNING
6,310,100 people exposed; $755,060M 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 Phoenix
Score: 5/10
Wildfire Risk in Phoenix
Score: 7/10
Hurricane Risk in Phoenix
Score: 1/10
Flood Risk in Phoenix
Score: 9/10
Tornado Risk in Phoenix
Score: 5/10
Winter Storm Risk in Phoenix
Score: 3/10
Landslide Risk in Phoenix
Score: 3/10
Drought Risk in Phoenix
Score: 7/10
High Wind Risk in Phoenix
Score: 9/10
Tsunami Risk in Phoenix
Score: 0/10
Extreme Heat Risk in Mesa, AZ
Score: 9/10
Extreme Heat Risk in Tucson, AZ
Score: 9/10
Extreme Heat Risk in Las Vegas, NV
Score: 9/10
Monitor Extreme Heat Risk in Real Time
Get real-time extreme heat alerts for Phoenix, AZ and hundreds of other locations with DisasterAWARE's enterprise platform.
Learn More About DisasterAWARE