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9
Extreme

flood Flood Risk in Illinois

Overall State Risk Score: 9/10

Illinois faces extreme flood risk. Based on FEMA National Risk Index data for 1 major cities.

Seasonal pattern: March-September

Highest-Risk Cities in Illinois

1
Chicago, IL
Extreme · 352 historical events
FEMA: 9Historical: 10

Notable Flood Events

Flood - Chicago, IL--IN Region, United States

July 8, 2025 — WARNING

Chicago, IL

573,000 people exposed; $133,535M capital exposed

Flood - Chicago, IL--IN Region, United States

July 1, 2023 — WARNING

Chicago, IL

Impact data not available

Flood - Chicago, IL--IN Region, United States

February 24, 2020 — WARNING

Chicago, IL

Impact data not available

Other Hazards in Illinois

earthquake
Earthquake Risk
Score: 7/10
wildfire
Wildfire Risk
Score: 1/10
hurricane
Hurricane Risk
Score: 1/10
tornado
Tornado Risk
Score: 9/10
winter-storm
Winter Storm Risk
Score: 9/10
landslide
Landslide Risk
Score: 1/10
extreme-heat
Extreme Heat Risk
Score: 9/10
drought
Drought Risk
Score: 1/10
high-wind
High Wind Risk
Score: 9/10
tsunami
Tsunami Risk
Score: 0/10

Monitor Flood Activity in Illinois

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