Illinois weather radar & alerts
1,461 CITIES · CENTRAL TIME · UPDATED 2:58 PM CSTIllinois radar
Open full radarActive alerts in Illinois
1 IN EFFECTWeather now in Illinois’ largest cities
UPDATED 2:55 PM CSTWeather radar for every Illinois city
1,461 CITIES · A–ZAbout Illinois weather today
1 weather alert is in effect in Illinois, the most severe a Flood Advisory for Cook, IL; Lake, IN until Sat 9:00 AM CST. Chicago is mostly cloudy at 43°F. Across the largest cities, temperatures range from 41°F in Champaign to 45°F in Joliet. Warnings for Illinois come from the National Weather Service offices that cover each county, and this page updates every few minutes.1 weather alert is in effect in Illinois, the most severe a Flood Advisory for Cook, IL; Lake, IN until Sat 9:00 AM CST. Chicago is mostly cloudy at 6°C. Across the largest cities, temperatures range from 5°C in Champaign to 7°C in Joliet. Warnings for Illinois come from the National Weather Service offices that cover each county, and this page updates every few minutes.
Frequently asked
Are there weather alerts in Illinois right now?
Yes — 1 alert is in effect, including 1 Flood Advisory. Alerts are checked every minute from the National Weather Service.
Which Illinois city is warmest right now?
Of the 12 largest cities, Joliet is warmest at 45°F (cloudy) and Champaign is coolest at 41°F.Of the 12 largest cities, Joliet is warmest at 7°C (cloudy) and Champaign is coolest at 5°C.
Is a hurricane heading toward Illinois?
No. No active tropical storm or hurricane is forecast to reach Illinois. Hurricane season ends Nov 30.
How often does the Illinois radar update?
Every 6 minutes. The map shows the last 66 minutes of the North American radar mosaic from Environment and Climate Change Canada (MSC GeoMet), with the National Weather Service warnings on top.
