Northern Lights in Colorado: Tonight's Aurora Forecast
Colorado needs about Kp 7 on the northern horizon. Live NOAA Kp, tonight's cloud cover and moon, the aurora oval map, and the darkest places to watch from.
Aurora season is open — equinox weeks bring the most stormsThe Colorado aurora season at a glance
Live · NOAA SWPCColorado holds DarkSky certifications from the plains to the San Luis Valley — Jackson Lake, Great Sand Dunes, Dinosaur and the Westcliffe–Silver Cliff community among them — and the 10 May 2024 G5 storm was photographed in pink and green from Denver, Boulder and Fort Collins.
Can you see the northern lights tonight in Colorado?
The verdict below combines NOAA SWPC's planetary Kp forecast with the Kp 7 that Colorado's darkest northern spots need, tonight's cloud cover from Open-Meteo at Jackson Lake State Park, the moon, and the hours of full darkness. Then each city and dark-sky site gets its own cloud reading — the sky often clears inland when the lakeshore or coast is socked in.
Reading NOAA SWPC and Open-Meteo for Jackson Lake State Park · Colorado tonight…
Tonight, city by city and site by site
| Location | Cloud tonight | Kp tonight | Verdict |
|---|---|---|---|
| Denver, CO city | … | … | … |
| Grand Junction, CO city | … | … | … |
| Leadville, CO city | … | … | … |
| Jackson Lake State Park DarkSky Park | … | … | … |
| Pawnee National Grassland est. Bortle 2 | … | … | … |
| Great Sand Dunes National Park DarkSky Park | … | … | … |
| Dinosaur National Monument, Canyon Visitor Center DarkSky Park | … | … | … |
| Westcliffe and Silver Cliff DarkSky Community | … | … | … |
Cloud is the 9 pm–3 am average from Open-Meteo for each point; Kp is NOAA SWPC's maximum forecast for tonight. City rows use a city-center location — drive to a dark northern horizon for the real thing.
The aurora oval over Colorado right now
NOAA's OVATION model maps where aurora is likely overhead in the next 30–90 minutes. Green cells mean a small chance, red a strong one. The map opens on Jackson Lake State Park; enter a ZIP to recenter, and widen the span to see the whole oval across Canada.
Loading the NOAA OVATION aurora forecast…
Best places to see the northern lights in Colorado
Get east of I-25 onto the plains for the northern horizon — the mountains block it from the Front Range towns. Pawnee Grassland or Jackson Lake for a Kp 7 forecast; Denver itself saw the May 2024 storm from city parks.
Jackson Lake State Park
DarkSky Park on the plains an hour from Denver; open northern horizon over the water.
Pawnee National Grassland
Shortgrass prairie with the Pawnee Buttes; the darkest sky close to the Front Range.
Great Sand Dunes National Park
Certified DarkSky Park; the dunes make a dramatic foreground.
Dinosaur National Monument, Canyon Visitor Center
The Colorado side of a DarkSky Park that straddles the state line; the Canyon Visitor Center and Harpers Corner Road are very dark and very remote. Coordinates approximate.
Westcliffe and Silver Cliff
Colorado's first DarkSky Community (2015) — the two towns hold one joint certification — with the Smokey Jack Observatory in town.
When to see the northern lights in Colorado
September – November autumn season
The equinox weeks around September 22 are statistically the most geomagnetically active of the year, and nights are long again. For Colorado this is the best window to catch a G3+ storm, which happen most often around the equinoxes.
December – February cold and clear
Geomagnetic activity dips, but long nights and cold dry air give the best transparency of the year. Watch the 3-day forecast; any G3+ storm is worth a drive north.
March – April spring season
The March equinox brings the second annual peak in geomagnetic storms. Nights are still long in March. By late April the late sunsets start to cut into viewing time.
May – August short nights
Short nights and twilight — summer haze and late sunsets make faint displays hard to see. Big storms still punch through: NOAA rated the 10–11 May 2024 event G5, the top of its scale, and it was seen across most of the lower 48.
How to see — and photograph — the aurora from Colorado
Kp, geomagnetic latitude, and solar cycle 25
The aurora forms in an oval around the geomagnetic pole, which sits over northern Canada rather than at the geographic pole. That tilt is why the eastern United States is magnetically "further north" than the West: Colorado is at about 48° geomagnetic latitude. The planetary K-index (Kp, 0–9) measures how disturbed Earth's magnetic field is; as Kp rises, the oval expands toward the equator by roughly 2° of latitude per step. From Colorado's darkest northern areas, Kp 7 brings the oval's edge into view on the horizon; Kp 9 puts it overhead.
NOAA's G-scale is a simpler label on the same thing: G1 (Kp 5) minor, G2 (Kp 6) moderate, G3 (Kp 7) strong, G4 (Kp 8) severe, G5 (Kp 9) extreme. Solar cycle 25 reached its maximum in 2024–2025 — NOAA rated the 10–11 May 2024 storm G5, the top of its scale — and the declining phase of a cycle historically produces the biggest individual storms, so 2026 and 2027 remain good years to watch. Storms also cluster near the equinoxes, which is why September–October and March–April are "aurora season" everywhere in the lower 48.
Colorado northern lights FAQ
More Colorado nights and seasons
More Rockies northern lights forecasts
Live Kp, NOAA scales and the OVATION aurora model are read in your browser from NOAA's Space Weather Prediction Center (services.swpc.noaa.gov); cloud cover and sunrise/sunset from Open-Meteo. Kp thresholds are climatological rules of thumb for a dark northern horizon, not guarantees, and Bortle classes are estimates. Hero image: “Northern Lights seen from the United States on May 10, 2024 - 1” — USDAgov — Public domain. National picture: which states can see the aurora tonight → · check your ZIP →