Northern Lights in ColoradoVisible Tonight?
Real-time aurora forecast updated every 15 minutes
Kp 1.7 is well below the Kp 7 that Colorado needs, so the aurora stays too far north tonight.
Verify with the live sky camera →No clear chance in the next 10 nights; forecasts update several times a day, so check back.
Tonight, Hour by Hour
The four things that must line up over Colorado, and how each hour of the night looks.
Kp 1.7 now, Kp 7 needed here
0% cloud cover around 11 PM
Dark from 10 PM
Dark rural skies; moon 8% lit
All times shown in Colorado local time (MDT), not your device time.
10-Night Aurora Outlook
Planning a trip to Colorado? Peak activity, cloud cover, and darkness for the nights ahead.
Kp ~ marks nights beyond NOAA's precise 3-day forecast, estimated from the 27-day outlook. Treat the far nights as a rough guide, not a promise.
Seeing the aurora in Colorado
The northern lights reach Colorado only during the strongest geomagnetic storms, and northern Colorado has a real edge over the southern half of the state. At roughly 40 degrees north you need a severe storm, usually Kp 7 or higher, before the aurora glows low on the northern horizon, and the biggest overhead displays take a rare Kp 8 to 9 extreme storm. Get to a truly dark, flat northern horizon like Jackson Lake or the Pawnee grassland and your phone will catch color before your eyes do.
Our verdict is not a Kp number. The Kp index is a global, three-hour average, and treating it as a promise is the single biggest reason people drive out and see nothing. Instead we check four things for Colorado specifically: whether forecast activity reaches the level this latitude needs, whether the sky will be clear, whether it will actually be dark, and how much moonlight and local light pollution will wash out. Only when all four line up do we say yes.
When to go: aurora season in Colorado
Aurora season in Colorado runs late September through early April. It is not that the sun quiets down in summer: Colorado's high-country nights in June and July are simply too short to reach the deep darkness aurora needs. The most active stretches cluster around the September and March equinoxes, when Earth's magnetic field couples more efficiently with the solar wind and the same storm produces a bigger display.
Through the current solar maximum Colorado has caught aurora on a scattering of nights each year, and the extreme May 2024 storm pushed naked-eye color over Estes Park, Fort Collins, and Breckenridge. Those rare big nights are what the 10-night outlook above is for: when a Kp 7 or stronger storm is on the way, it usually shows up there a couple of days ahead.
Why northern Colorado beats the south
Northern Colorado sees the aurora more often than the southern half of the state because it sits closer to the auroral oval. The lights live on the northern horizon at this latitude, and every degree of latitude north puts you a little further under the oval, so a storm that is camera-only near Colorado Springs can show as a faint glow from the Wyoming line. The dark northeastern plains supply the other half of the equation: a flat, unobstructed horizon with no mountains or city glow in the way.
That is why the go-to spots keep repeating: Jackson Lake State Park, the Pawnee National Grassland, and the open plains northeast of Fort Collins. When a real storm lands, the simple move is to drive north and east until the horizon is flat and the Front Range glow is behind you.
How to read tonight's forecast like a local
From northern Colorado you generally need a severe storm near Kp 7 for any naked-eye color and Kp 8 to 9 for a display that fills the sky; a camera can pull faint aurora a level or so lower. Regulars know the Kp number is only the entry ticket: a genuinely dark, flat northern horizon and clear skies matter just as much, which is why the verdict above folds cloud cover and twilight into one answer instead of making you juggle three apps.
On a promising night, get out of town early, give it two full hours, and let your eyes dark-adapt for 15 minutes without checking your phone. Colorado displays are usually subtle: a pale arc or a green haze low in the north rather than curtains overhead, so point night mode at the horizon now and then, because the camera will confirm an approaching aurora before your eyes do.