Colorado: Northern Lights Tonight, City by City
Aurora season in Colorado runs from September to April.
Colorado tonight
Low
Aurora chance tonight, Colorado overall: Low. Best place: Boulder, 11:00 PM–1:00 AM. Clouds are the limit there: about 65% cover tonight.
| Place | Aurora Score | Best viewing window | Cloud cover | Min Kp |
|---|---|---|---|---|
| Boulder | 30Low | 11:00 PM–1:00 AM | 65% | 6 |
| Denver | 30Low | 11:00 PM–2:00 AM | 65% | 6 |
| Colorado Springs | 30Low | 12:00 AM–2:00 AM | 68% | 6 |
| Fort Collins | 27Low | 11:00 PM–1:00 AM | 81% | 6 |
Colorado: the next nights
Aurora Forecast AI Tracker
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Track the aurora forecast for Colorado with hourly visibility, cloud cover and geomagnetic activity. Save nearby viewing spots, check the best time to look for the Northern Lights, and receive alerts when local conditions improve.
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- Best viewing window
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Colorado in numbers
- Cities on this site
- 4
- Latitude
- 38.8°–40.6°
- Geomagnetic latitude
- 47.3°–48.9°
- Min Kp
- 6
- Aurora zone
- Mid-latitude – Low latitude
Best Months to See the Northern Lights in Colorado
The aurora season in Colorado usually runs from September to April.
Where the odds are best in Colorado
| Place | Aurora zone | Min Kp | Geomagnetic latitude | Season |
|---|---|---|---|---|
| 🇺🇸Fort CollinsColorado | Mid-latitude | 6 | 48.9° | September to April |
| 🇺🇸BoulderColorado | Mid-latitude | 6 | 48.4° | September to April |
| 🇺🇸DenverColorado | Mid-latitude | 6 | 48.1° | September to April |
| 🇺🇸Colorado SpringsColorado | Low latitude | 6 | 47.3° | September to April |
Other regions in United States
Frequently Asked Questions
Can you see the Northern Lights in Colorado tonight?
Colorado: it depends on tonight's sky more than on where you are — every place here needs about Kp 6. Beyond that it takes a clear, dark sky: cloud blocks aurora at any Kp. The table at the top of this page has tonight's forecast city by city.
What Kp index is needed to see the Northern Lights in Colorado?
Colorado: about Kp 6 everywhere. The places on this site sit at similar geomagnetic latitudes, so the threshold is the same. Kp is a probability signal, not a guarantee — it still takes a clear, dark sky.
What are the best months to see the Northern Lights in Colorado?
The best months to see the Northern Lights in Colorado are typically September to April, when nights are darker and aurora viewing conditions are better.
Where is the best place to see the Northern Lights in Colorado?
Colorado: geomagnetically its places are about equal — each needs about Kp 6. What decides the night is cloud and darkness: pick the clearest sky and get away from city lights.