Extreme Heat Risk in Chicago, IL
Risk Level: Extreme — Score 9/10
Live Extreme Heat alert status near Chicago
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Live extreme heat activity around Chicago — refreshed throughout the day.
Open full-screen map →Key Risk Factors
- FEMA rates Chicago's county as Very High risk for this hazard
- Estimated annual loss of $193M from this hazard type
- 20 events recorded in proximity in recent decades
- Active in the last 12 months (10 events)
- Average annual frequency: 2.9 events per year
Peak season: June-September
Last significant event: Excessive Heat - Cook County, Illinois, United States (2026-06-29) — 4,810,000 people exposed
Highest Risk Cities for Extreme Heats
How Chicago Compares
Notable Extreme Heat Events Near Chicago
DisasterAWARE's historical archive records 5 notable extreme heat events near Chicago, ranked below by impact. The most impactful: Extreme Cold - United States (January 2025) — 158,777,000 people exposed; $26,054,772M capital exposed.
Extreme Cold - United States
January 16, 2025 — WARNING
158,777,000 people exposed; $26,054,772M capital exposed
Excessive Heat - Cook County, Illinois, United States
June 28, 2026 — WARNING
4,810,000 people exposed; $747,930M capital exposed
Excessive Heat - Cook County, Illinois, United States
June 28, 2026 — WATCH
4,810,000 people exposed; $747,930M capital exposed
Extreme Cold - Central Cook County, Illinois, United States
January 22, 2026 — WARNING
3,260,000 people exposed; $503,525M capital exposed
Heat - Central Illinois, United States
August 15, 2025 — ADVISORY
1,650,000 people exposed; $215,093M 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
Chicago, IL 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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