Northern lights in Indiana tonight
Indiana, USA · 45° magnetic latitude · Kp 6 threshold
Kp 1 is well below the Kp 6 threshold needed for aurora to be visible from Indiana.
7-day outlook for Indiana
Tonight shows the live Kp reading. The nights after it show the Kp expected from any coronal mass ejection DONKI predicts will arrive that day, and a quiet baseline of Kp 2 where no arrival is forecast.
Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.
auroratonight.space
What Kp is needed here?
Indiana sits at a magnetic latitude of approximately 45°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 6 before the auroral oval expands far enough south to be visible from here.
At Kp 6, visibility is possible from Indiana but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.
Best dark sky sites near Indiana
Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.
Indiana Dunes National Park
Get directions ↗The Lake Michigan shoreline at 41.6°N faces north across open water. Moving east along the park from Portage puts Chicago's light dome to the west rather than north. West Beach and Dunbar Beach face north with the lake horizon clear. The dunes give marginally higher latitude than Indianapolis and are accessible year-round. About 45 miles from Chicago and 140 miles from Indianapolis.
Hoosier National Forest - Brown County area
Get directions ↗The Brown County State Park and Hoosier National Forest ridge country south of Indianapolis give Bortle 3 conditions in the hill country. North-facing ridge positions above the valleys give open sky. The area around Yellowwood State Forest is particularly dark. Not the highest latitude in Indiana but genuinely dark - useful on a major-storm night (Kp 6) when the aurora extends this far south.
Potato Creek State Park area / Kankakee
Get directions ↗The northern Indiana flatlands near South Bend give open flat sky with reasonable darkness in the rural areas north of US-6. Potato Creek State Park faces north across flat prairies. The Kankakee Fish and Wildlife Area gives dark open-sky positions at similar latitude to Indiana Dunes but farther east, away from Chicago's light dome. About 60 miles east of Chicago and 100 miles from Indianapolis.
Best time to see the northern lights in Indiana
At 45°N magnetic latitude, Indiana sits at the lower end of regular aurora territory. Only the deep mid-winter months of November through January offer nights dark enough for aurora to be visible, and only then when a significant geomagnetic storm pushes the auroral oval this far south.
Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Indiana's latitude.
Outside November through January, twilight is too bright for aurora viewing even during significant storms. The season is short, but the equinox months on either side of winter can extend it slightly when storm timing aligns.
How often does the aurora appear in Indiana?
Average nights per month the Kp reached Indiana's threshold of 6+, from 15 years of geomagnetic data (2010–2024).
Counts the Kp 6+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0
Plan your trip to Indiana
Best window
The August to October window averages 3 aurora nights - the strongest consecutive stretch of the year.
How long to stay
Aurora at this latitude requires patience - allow as many nights as possible during September.
Related pages
Northern Lights USA
USA-wide aurora forecast hub.
Read →Northern Lights Ohio Tonight
Ohio - similar latitude, Hocking Hills and Lake Erie shore.
Read →Northern Lights Illinois Tonight
Illinois - Starved Rock and Shawnee NF, Kp 5-6.
Read →Northern Lights Michigan Tonight
Michigan - Upper Peninsula gives higher latitude and darker sky.
Read →What Is the Kp Index?
What Kp 6 means for viewing at around 45° geomagnetic latitude.
Read →Aurora photographs from Indiana
Real photos sourced from Wikimedia Commons.
Aurora over Indiana
Aurora over Indiana
Aurora over Indiana
Aurora over Indiana
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