Stargazing in Illinois

True astronomical darkness runs from 12:58 AM to 10:29 AM (9.5 hours) at Illinois's central latitude — this is the real window when the sky is darkest.

Cloud cover decides whether you can see anything at all, so check a local forecast before you go. In Illinois, skies are usually clearest after a cold front passes, and higher, drier sites tend to beat valleys and coasts. Hourly cloud outlook →

The Moon is Waning Crescent at 9% illumination. Moonlight shouldn't significantly interfere with deep-sky observing tonight. Full Moon details →

• Jupiter — visible in Leo, toward the East (up to 32° altitude).
• Saturn — visible in Cetus, toward the South (up to 52° altitude).
• Mars — visible in Cancer, toward the East-Southeast (up to 46° altitude).

Draconids is active tonight. A minor, unpredictable shower best watched right after nightfall, unlike most showers which peak before dawn. Full calendar →

Next visible pass: Invalid Date. Live ISS tracker →

Current planetary Kp is 2.7; Illinois's central latitude needs roughly Kp 8.9 for aurora to become visible. Aurora is unlikely from most of the state tonight at current activity levels. Full Aurora forecast →

Planetary Kp is 2.7 right now. Full space weather conditions →

Darkness and Moon conditions tonight favor deep-sky and Milky Way viewing, assuming clear skies and distance from city lights. This doesn't account for light pollution at your specific spot — a real light-pollution measurement isn't currently available for this location, so use distance from city lights as a practical guide instead. Check Milky Way visibility →

Moonlight is low tonight, which favours the Milky Way and fainter deep-sky objects. 3 planets are realistically observable. Pick a dark site away from city lights and confirm the local cloud forecast before you go.

Middle Fork River Forest Preserve near Champaign is a certified International Dark Sky Park. Jubilee College State Park near Peoria hosts astronomy events, and the Shawnee National Forest in southern Illinois is the darkest large region.

• Middle Fork River Forest Preserve — International Dark Sky Park in Champaign County.
• Shawnee National Forest — Hilly, forested and dark in far southern Illinois.
• Jubilee College State Park — Central Illinois site used for astronomy events.

The Chicago metro (very bright), central prairie farmland, the Quad Cities, the Metro East near St. Louis, and Little Egypt in the south.

Chicago's glow is visible far across the flat prairie; the south is much darker.

Visible from central and southern Illinois on clear summer nights.

Flat farmland gives wide, open horizons ideal for meteors.

Late summer and autumn; winter is often cloudy.

Easy from anywhere, including Chicago lakefront parks.

Aurora is uncommon but possible during strong geomagnetic storms, usually as a glow low on the northern horizon. Watch the Kp index and find a dark, open view north.

Barns, grain elevators and Shawnee rock formations like Garden of the Gods make strong foregrounds.

Major meteor showers (Quadrantids, Lyrids, Perseids, Geminids), Milky Way core season and any eclipses apply here as they do nationally -- dates shift each year, so check the current calendar.

Check forest-preserve hours and observing-night schedules before visiting.