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5
High

extreme-heat Extreme Heat Risk in Illinois

Overall State Risk Score: 5/10

Illinois faces high extreme-heat risk. 3 of 102 counties (3%) rated high or very high by FEMA National Risk Index.

Seasonal pattern: June-September

Highest-Risk Cities in Illinois

1
Chicago, IL
Extreme · 15 historical events
FEMA: 9Historical: 10

Notable Extreme Heat Events

Extreme Cold - Central Cook County, Illinois, United States

January 22, 2026 — WARNING

Chicago, IL

3,260,000 people exposed; $503,525M capital exposed

Heat - Central Illinois, United States

August 15, 2025 — ADVISORY

Chicago, IL

1,650,000 people exposed; $215,093M capital exposed

Other Hazards in Illinois

earthquake
Earthquake Risk
Score: 5/10
wildfire
Wildfire Risk
Score: 1/10
hurricane
Hurricane Risk
Score: 1/10
flood
Flood Risk
Score: 3/10
tornado
Tornado Risk
Score: 7/10
winter-storm
Winter Storm Risk
Score: 7/10
landslide
Landslide Risk
Score: 3/10
drought
Drought Risk
Score: 7/10
high-wind
High Wind Risk
Score: 7/10
tsunami
Tsunami Risk
Score: 0/10

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