But don't worry if you missed the lights last night — there may be a chance of seeing them tonight and even tomorrow morning. Here's what to know. When will northern lights be visible in Illinois?

Here's what to know. When will northern lights be visible in Illinois? If the skies are clear, auroral displays may be visible low on the horizon in Chicago between 7 a.m. and 4 p.m., according to the ...

The lights may also appear low on the horizon between 10 p.m. tonight and 10 a.m. tomorrow. The Kp will be at a 5 during both of these periods. What are Kp numbers?

The northern lights become more visible as the Kp number increases, according to the NOAA. A Kp between 3 and 5 means the aurora is moving further from the poles, becoming brighter with more ...