As the weekend approaches, consider using the SWPC's 30-minute aurora forecast tool to see if the aurora is coming for you. You can also get live updates with reports from social media at Aurorasaurus. It's even showing a pretty good chance you could see the celestial sideshow Thursday night.
For your best chance at seeing the aurora borealis, get away from city lights and into a space with very dark skies. You'll be contending with a bright moon and, in the west, smoke obstructions from wild fires. But if you can get to clear skies, you have a chance to see a rare appearance from the northern lights, which will be getting temporarily more rare as the current solar cycle approaches solar minimum.
When you get out of the city, look for a greenish glow in the sky. You probably won't see the highly defined wispy bands like you see in striking images from northern lights hotspots like Fairbanks, Alaska; Iceland; or the northern reaches of Scandinavia. But it's still an impressive sight you don't often get to see just outside Chicago.