Chicago, IL Lightning Map
Real-time lightning tracking for Chicago, Illinois. This city averages 38 thunderstorm days per year, making lightning awareness important for Chicago residents and visitors.
Live data from NOAA GOES-19 GLM. Chicago, IL.
Data sourced from NOAA GOES-19 GLM and the Storm Prediction Center.
Real-Time Lightning Near Chicago
Monitor live lightning strikes and approaching storms
Live Lightning Data for Chicago
Download the iOS app for live alerts, then use this city page plus the nearby-lightning and alert guides to make faster weather and safety calls in Chicago.
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Thunderstorm Season in Chicago
When to expect lightning activity in Chicago, IL
Chicago sees most of its thunderstorm activity between May and August, with June and July being the peak months. Storms are typically driven by frontal systems and can develop rapidly during warm, humid afternoons. The transition months of May and September can also bring significant lightning.
Compared to the national average of approximately 25 thunderstorm days per year, Chicago sees 13 more days of thunderstorm activity. The Illinois statewide average is 40 days.
Lightning Safety Tips for Chicago
Essential guidelines to stay safe during thunderstorms
30-30 Rule
When you see lightning, count to 30. If you hear thunder before reaching 30, get indoors. Wait 30 minutes after the last thunderclap before going outside.
Seek Shelter
With 38 thunderstorm days annually, residents of Chicago should always have a shelter plan. Move inside a substantial building or hard-topped vehicle.
Stay Informed
Use Lightning Tracker to monitor real-time lightning near Chicago. Set alerts for your neighborhood to get advance warning of approaching storms.
Avoid Open Areas
Stay away from open fields, hilltops, isolated trees, and bodies of water during storms. If hiking, descend from ridges and peaks immediately.
Useful Guides for Chicago
These guides match the nearby-lightning and alert questions people ask most often
Use this guide to judge nearby strike danger fast, especially when storms are building near your neighborhood.
Alerts Best alert options for Chicago stormsSee how app alerts, NOAA weather radio, and local warnings work when storms move toward your city.
Map guide How to read live lightning around ChicagoUnderstand strike clusters, motion, and timing so you can decide when to get indoors.
Chicago Lightning FAQ
Fast answers for live lightning, storm season, and safety in Chicago
How many thunderstorm days does Chicago, Illinois get per year?
Chicago averages 38 thunderstorm days per year. The national average is approximately 25 days, and the Illinois statewide average is 40 days.
When is thunderstorm season in Chicago?
Chicago sees most of its thunderstorm activity between May and August, with June and July being the peak months. Storms are typically driven by frontal systems and can develop rapidly during warm, humid afternoons. The transition months of May and September can also bring significant lightning.
What should I do if caught in a lightning storm in Chicago?
Follow the 30-30 rule: if the time between seeing lightning and hearing thunder is 30 seconds or less, seek shelter immediately. With 38 thunderstorm days annually in Chicago, always have a shelter plan. Move inside a substantial building or hard-topped vehicle, and wait 30 minutes after the last thunderclap before going outside.
Nearest Lightning Maps to Chicago
Jump to nearby city pages when storms are moving across the region