Extreme Heat Risk in Phoenix, AZ
Risk Level: Extreme — Score 9/10
Live Extreme Heat alert status near Phoenix
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Live extreme heat activity around Phoenix — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- FEMA rates Phoenix's county as Very High risk for this hazard
- Estimated annual loss of $958M from this hazard type
- 29 events recorded in proximity in recent decades
- Active in the last 12 months (12 events)
- Average annual frequency: 19.8 events per year
Peak season: June-September
Last significant event: Excessive Heat - Southwest Arizona and Southeast California, United States (2026-07-07) — 5,700,016 people exposed
Highest Risk Cities for Extreme Heats
How Phoenix Compares
Notable Extreme Heat Events Near Phoenix
DisasterAWARE's historical archive records 5 notable extreme heat events near Phoenix, ranked below by impact. The most impactful: Excessive Heat - Southwest Arizona and Southeast California, United States (August 2025) — 5,720,016 people exposed; $642,708M capital exposed.
Excessive Heat - Southwest Arizona and Southeast California, United States
August 19, 2025 — WARNING
5,720,016 people exposed; $642,708M capital exposed
Excessive Heat - Southwest Arizona and Southeast California, United States
July 6, 2026 — WATCH
5,700,016 people exposed; $641,769M capital exposed
Extreme Heat Warning issued June 25 at 12:35PM MST until June 25 at 8:00PM MST by NWS Phoenix AZ
June 22, 2026 — WARNING
4,650,016 people exposed; $568,199M capital exposed
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 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
Phoenix, AZ 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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