SKY · LIGHT POLLUTION · USA
Dark-Sky Sites Near Chicago
A vast, flat light dome — the lakefront core is Bortle 8–9. To actually see the Milky Way and faint stars, you'll want to reach a darker site — and there are real dark-sky destinations within range of Chicago, listed below.
SKY DARKNESS · CHICAGO
Sky class (estimate)Bortle 9 · Inner-city sky
What you can seeThe entire sky is brightly lit. Only the Moon, planets and a handful of the brightest stars.
Bortle class is an authored estimate for the city centre, on the standard Bortle dark-sky scale — not a measured figure.
Darker skies within reach
~2.5 HR DRIVE SOUTHMiddle Fork River Forest Preserve, ILIDA-certified Dark Sky Park, the first in Illinois.
Dark-sky designations from the International Dark-Sky Association and well-recognised dark regions. Distances are rough driving guides — always check access, opening hours and the weather before you go.
Plan tonight from Chicago
More sky over Chicago
SEE IT ON THE MAP
The live sky map shows the day/night line over Chicago in real time.