Rule
Dark Skies
Steamboat Springs - Dark Skies - Rocky Mountains
Steamboat Springs, Colorado, United States
Moonless nights with crystal-clear skies for deep-sky photography
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in America/Denver
Next opportunity
Pristine Dark Skies (pristine)
Steamboat Springs
Tomorrow · 24:00–04:56 · 5h window
Medium confidence
49%
🌛Moon Altitude-45.5--1.6°
☁️Total Cloud Coverage0.8-3.3%
Good Dark Skies
Steamboat Springs
Sat, Apr 18 · 02:00–04:00
🌛Moon Altitude:-30.4--27.9°
Low
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72-hour requirements breakdown
What passed or failed, hour by hourOR logic: one branch per group is enough
Meets requirement
Misses requirement
Time America/Denver | Astronomical Night Any | Total Cloud Coverage ≤ 20.0% | Visibility ≥ 12000.0m | Precipitation Chance ≤ 10.0% | Moon Illumination OR1·B1≤ 35.0% | Moon Altitude OR1·B2≤ 10.0° |
|---|---|---|---|---|---|---|
| Fri, Apr 10 | ||||||
| 23:00 | ✓ | 100% | 24134m | 0% | 38% | -50° |
| Sat, Apr 11 | ||||||
| 24:00 | ✓ | 100% | 24134m | 0% | 38% | -39° |
| 01:00 | ✓ | 100% | 24134m | 0% | 38% | -28° |
| 02:00 | ✓ | 96% | 24134m | 0% | 38% | -17° |
| 03:00 | ✓ | 84% | 24134m | 0% | 38% | -6.8° |
| 04:00 | ✓ | 82% | 24135m | 0% | 38% | 3.1° |
| 05:00 | ✕ | 5% | 24135m | 0% | 38% | 12° |
| 06:00 | ✕ | 5% | 24134m | 0% | 38% | 19° |
| 07:00 | ✕ | 72% | 24134m | 58% | 38% | 25° |
| 08:00 | ✕ | 77% | 24135m | 77% | 38% | 28° |
| 09:00 | ✕ | 16% | 24135m | 95% | 38% | 28° |
| 10:00 | ✕ | 5.2% | 24135m | 97% | 38% | 26° |
| 11:00 | ✕ | 99% | 24135m | 98% | 38% | 20° |
| 12:00 | ✕ | 100% | 24135m | 100% | 38% | 13° |
| 13:00 | ✕ | 100% | 23871m | 92% | 38% | 4.3° |
| 14:00 | ✕ | 100% | 24134m | 84% | 38% | -5.4° |
| 15:00 | ✕ | 100% | 4751m | 77% | 38% | -16° |
| 16:00 | ✕ | 100% | 20182m | 79% | 38% | -27° |
| 17:00 | ✕ | 20% | 23577m | 80% | 38% | -38° |
| 18:00 | ✕ | 43% | 24134m | 82% | 29% | -48° |
| 19:00 | ✕ | 4.3% | 24135m | 55% | 29% | -58° |
| 20:00 | ✕ | 91% | 24135m | 27% | 29% | -66° |
| 21:00 | ✓ | 87% | 24135m | 0% | 29% | -68° |
| 22:00 | ✓ | 34% | 24134m | 0% | 29% | -64° |
| 23:00 | ✓ | 53% | 24135m | 0% | 29% | -56° |
| Sun, Apr 12 | ||||||
| 24:00 | ✓ | 1% | 24134m | 0% | 29% | -45° |
| 01:00 | ✓ | 3.3% | 24135m | 0% | 29% | -35° |
| 02:00 | ✓ | 0.8% | 24135m | 0% | 29% | -23° |
| 03:00 | ✓ | 2.9% | 24134m | 0% | 29% | -12° |
| 04:00 | ✓ | 3.1% | 24135m | 0% | 29% | -1.6° |
| 05:00 | ✕ | 3.1% | 24135m | 0% | 29% | 8.4° |
| 06:00 | ✕ | 3.2% | 24135m | 0% | 29% | 17° |
| 07:00 | ✕ | 3.7% | 24135m | 0% | 29% | 25° |
| 08:00 | ✕ | 0.7% | 24135m | 0% | 29% | 30° |
| 09:00 | ✕ | 5% | 24135m | 0% | 29% | 33° |
| 10:00 | ✕ | 100% | 24135m | 0% | 29% | 33° |
| 11:00 | ✕ | 27% | 24134m | 0% | 29% | 29° |
| 12:00 | ✕ | 100% | 24134m | 0% | 29% | 23° |
| 13:00 | ✕ | 8.5% | 24134m | 0% | 29% | 15° |
| 14:00 | ✕ | 98% | 24135m | 0% | 29% | 5.8° |
| 15:00 | ✕ | 100% | 24135m | 0% | 29% | -4.4° |
| 16:00 | ✕ | 100% | 24135m | 0% | 29% | -15° |
| 17:00 | ✕ | 100% | 24135m | 0% | 29% | -26° |
| 18:00 | ✕ | 100% | 24135m | 0% | 20% | -37° |
| 19:00 | ✕ | 98% | 24135m | 0% | 20% | -47° |
| 20:00 | ✕ | 98% | 24135m | 0% | 20% | -56° |
| 21:00 | ✓ | 43% | 24135m | 0% | 20% | -62° |
| 22:00 | ✓ | 98% | 24134m | 15% | 20% | -63° |
| 23:00 | ✓ | 100% | 24134m | 31% | 20% | -58° |
| Mon, Apr 13 | ||||||
| 24:00 | ✓ | 83% | 24135m | 46% | 20% | -50° |
| 01:00 | ✓ | 80% | 24135m | 47% | 20% | -39° |
| 02:00 | ✓ | 16% | 24134m | 49% | 20% | -29° |
| 03:00 | ✓ | 6.5% | 24135m | 50% | 20% | -17° |
| 04:00 | ✓ | 5.6% | 24134m | 55% | 20% | -6.3° |
| 05:00 | ✕ | 5.7% | 24135m | 59% | 20% | 4.6° |
| 06:00 | ✕ | 4.7% | 24135m | 64% | 20% | 15° |
| 07:00 | ✕ | 14% | 24135m | 63% | 20% | 24° |
| 08:00 | ✕ | 98% | 24135m | 62% | 20% | 32° |
| 09:00 | ✕ | 100% | 18503m | 62% | 20% | 37° |
| 10:00 | ✕ | 100% | 214m | 65% | 20% | 39° |
| 11:00 | ✕ | 99% | 353m | 68% | 20% | 38° |
| 12:00 | ✕ | 99% | 18498m | 71% | 20% | 33° |
| 13:00 | ✕ | 100% | 2241m | 70% | 20% | 26° |
| 14:00 | ✕ | 100% | 1875m | 69% | 20% | 17° |
| 15:00 | ✕ | 100% | 18263m | 69% | 20% | 7.5° |
| 16:00 | ✕ | 78% | 3289m | 69% | 20% | -3.1° |
| 17:00 | ✕ | 59% | 19980m | 70% | 20% | -14° |
| 18:00 | ✕ | 76% | 23028m | 71% | 12% | -25° |
| 19:00 | ✕ | 84% | 23397m | 68% | 12% | -35° |
| 20:00 | ✕ | 92% | 23766m | 65% | 12% | -45° |
| 21:00 | ✓ | 100% | 24135m | 62% | 12% | -52° |
| 22:00 | ✓ | 100% | 16282m | 68% | 12% | -56° |
| 23:00 | ✓ | 100% | 8429m | 73% | 12% | -56° |
| Tue, Apr 14 | ||||||
| 24:00 | ✓ | 100% | 576m | 79% | 12% | -51° |
| 01:00 | ✓ | 100% | 1004m | 75% | 12% | -43° |
| 02:00 | ✓ | 100% | 1431m | 71% | 12% | -33° |
| 03:00 | ✓ | 100% | 1858m | 66% | 12% | -22° |
| 04:00 | ✓ | 100% | 2016m | 69% | 12% | -11° |
| 05:00 | ✕ | 100% | 2173m | 72% | 12% | 0.42° |
| 06:00 | ✕ | 100% | 2330m | 75% | 12% | 11° |
| 07:00 | ✕ | 100% | 9599m | 73% | 12% | 22° |
| 08:00 | ✕ | 100% | 16867m | 71% | 12% | 31° |
| 09:00 | ✕ | 100% | 24135m | 69% | 12% | 39° |
| 10:00 | ✕ | 100% | 24135m | 73% | 12% | 44° |
| 11:00 | ✕ | 99% | 24135m | 76% | 12% | 45° |
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity). For OR groups, only one branch is required, so some OR-branch predicates can be ✕ even in a matching hour.
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