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 map around Chicago
Shows extreme heat warnings and events that are active right now, refreshed through the day. When none are active, the map is empty by design.
Key Risk Factors
- FEMA rates Chicago's county as Very High risk for this hazard
- Estimated annual loss of $193M from this hazard type
- 11 events recorded in proximity in recent decades
- 4 event(s) in the 12 months to Aug 9, 2026
- 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 17, 2025 — WARNING
158,777,000 people exposed; $26,054,772M capital exposed
Extreme Heat - Midwest United States
July 25, 2025 — WARNING
69,790,000 people exposed; $8,667,694M capital exposed
Excessive Heat - Cook County, Illinois, United States
June 29, 2026 — WARNING
4,810,000 people exposed; $747,930M capital exposed
Excessive Heat - Cook County, Illinois, United States
June 29, 2026 — WATCH
4,810,000 people exposed; $747,930M capital exposed
Extreme Cold - Central Cook County, Illinois, United States
January 23, 2026 — WARNING
3,260,000 people exposed; $503,525M 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.
The data behind this page
Every score and event here comes from DisasterAWARE's hazard database — available as downloadable historical datasets and a real-time API.
Monitor Extreme Heat Risk in Real Time
Get real-time extreme heat alerts for Chicago, IL and hundreds of other locations with DisasterAWARE's enterprise platform.