Cook County, IL — Severe Weather & Radar
No active severe-weather warnings for Cook County, IL right now. Live radar is below — set up alerts to get warned the moment one is issued.
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Severe-weather outlook
The Storm Prediction Center has Cook County, IL in a Slight Riskfor severe thunderstorms today (Day 1 categorical outlook).
3-day forecast
Forecast via Open-Meteo.
When is severe weather most likely near Cook?
Around Cook County and the Midwest, severe weather is most active from April through June.
The main threats are damaging thunderstorm winds — including widespread, long-lived derechos — along with large hail and tornadoes.
Based on long-term NOAA / NWS Storm Prediction Center climatology.
In Cook County, IL
Cook County, IL has an estimated 5,300,000 residents, plus 48 hospitals, 201 nursing homes, 1,402 schools, 20 mobile-home parks, 137 dialysis centers that could be in a storm's path. Atmostorm shows which of them fall inside an active warning polygon.
Emergency-management view: who & what is in the warned path →
Nearby areas
Live radar and active alerts for places near Cook:
Not an official source — always confirm with the National Weather Service at weather.gov. Data aggregated from NWS/SPC. Facility and population figures are decision-support estimates.