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Located at a latitude of around 42 degrees north, Chicago is not typically known for frequent sightings of the northern lights. The northern lights, also known as aurora borealis, are a natural phenomenon that occurs closer to the Earth's polar regions.
While it is rare to see the aurora borealis in Chicago due to its southern location, there have been instances where the lights have been visible further south than usual during particularly strong geomagnetic storms. To increase your chances of spotting the northern lights in Chicago, it is recommended to find a location away from city lights with a clear view of the northern horizon.
Monitoring aurora forecasts and space weather reports can also help in predicting potential aurora activity. While Chicago may not be the most ideal location for viewing the northern lights, with patience, luck, and the right conditions, it is still possible to catch a glimpse of this mesmerizing natural light display in the night sky.
The current aurora chance for Chicago is None. That rating is useful, but it works best when you combine it with darkness, weather, and the fact that some cities simply need stronger geomagnetic activity than others.
A none or near-none chance in Chicago usually means tonight is not a strong aurora setup for this location. It is still useful context, because you can compare later updates or look at cities farther north for better odds.
Chicago is far enough south that strong geomagnetic storms are usually needed before the northern lights become a realistic target. A promising forecast here is worth noticing, but weak or borderline setups often do not travel far enough south.
Because Chicago is a very large metro area, city light pollution can hide faint aurora even on otherwise interesting nights. If the forecast looks promising, darker skies outside the urban core will usually give you a better chance than staying in the brightest part of the city.
Use these pages to compare Chicago with other forecast locations, understand why visibility changes, and plan the next place to watch.
Learn
Read these guides when the Chicago forecast looks interesting but you still need help judging darkness, season, or viewing conditions.
The KP index is one of the most common numbers in aurora forecasts, but it works best as a rough guide, not a promise. Here is what it means and how casual northern lights watchers should use it.
The northern lights have been unusually active because Solar Cycle 25 is in its maximum phase, with high sunspot activity leading to more solar flares, coronal mass ejections, and stronger geomagnetic storms.
The northern lights still happen in summer, but long daylight, bright twilight, and short nights make them much harder to see across the U.S. and Canada.