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
Fri, Jul 10 · 01:00–03:44 · 3h window
Medium confidence
44%
🌛Moon Altitude-5.8-13.8°
☁️Total Cloud Coverage0-4.5%
Pristine Dark Skies (pristine)
Steamboat Springs
Fri, Jul 10 · 22:39–03:45
🌛Moon Altitude:-23.6-5.8°
Medium
Pristine Dark Skies (pristine)
Steamboat Springs
Sat, Jul 11 · 22:39–03:47
🌛Moon Altitude:-21.7--2.8°
Medium
Pristine Dark Skies (pristine)
Steamboat Springs
Sun, Jul 12 · 22:38–03:48
🌛Moon Altitude:-21.9--11.6°
Medium
Pristine Dark Skies (pristine)
Steamboat Springs
Mon, Jul 13 · 22:37–03:49
🌛Moon Altitude:-24.3--11.7°
Medium
Pristine Dark Skies (pristine)
Steamboat Springs
Tue, Jul 14 · 22:36–03:50
🌛Moon Altitude:-28.6--6.5°
Medium
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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° |
|---|---|---|---|---|---|---|
| Tue, Jul 7 | ||||||
| 07:00 | ✕ | 27% | 24135m | 26% | 53% | 57° |
| 08:00 | ✕ | 56% | 24135m | 13% | 53% | 54° |
| 09:00 | ✕ | 36% | 24135m | 0% | 53% | 47° |
| 10:00 | ✕ | 44% | 24135m | 0% | 53% | 37° |
| 11:00 | ✕ | 100% | 24135m | 0% | 53% | 27° |
| 12:00 | ✕ | 89% | 24135m | 0% | 53% | 16° |
| 13:00 | ✕ | 100% | 24135m | 0% | 53% | 5.2° |
| 14:00 | ✕ | 100% | 24134m | 0% | 53% | -5.4° |
| 15:00 | ✕ | 99% | 24135m | 0% | 53% | -15° |
| 16:00 | ✕ | 100% | 24135m | 24% | 53% | -24° |
| 17:00 | ✕ | 58% | 24135m | 48% | 53% | -32° |
| 18:00 | ✕ | 73% | 22920m | 72% | 43% | -37° |
| 19:00 | ✕ | 60% | 24134m | 77% | 43% | -39° |
| 20:00 | ✕ | 24% | 24135m | 63% | 43% | -37° |
| 21:00 | ✕ | 65% | 24135m | 50% | 43% | -32° |
| 22:00 | ✓ | 86% | 24135m | 50% | 43% | -25° |
| 23:00 | ✓ | 95% | 24134m | 50% | 43% | -16° |
| Wed, Jul 8 | ||||||
| 24:00 | ✓ | 99% | 23260m | 50% | 43% | -6.1° |
| 01:00 | ✓ | 83% | 24134m | 26% | 43% | 4.6° |
| 02:00 | ✓ | 71% | 24135m | 13% | 43% | 16° |
| 03:00 | ✓ | 5% | 24134m | 0% | 43% | 27° |
| 04:00 | ✕ | 50% | 24134m | 0% | 43% | 38° |
| 05:00 | ✕ | 0.1% | 24134m | 0% | 43% | 48° |
| 06:00 | ✕ | 0% | 24134m | 0% | 43% | 57° |
| 07:00 | ✕ | 0% | 24134m | 0% | 43% | 63° |
| 08:00 | ✕ | 0% | 24135m | 0% | 43% | 63° |
| 09:00 | ✕ | 4.3% | 24135m | 0% | 43% | 58° |
| 10:00 | ✕ | 4.8% | 24135m | 13% | 43% | 49° |
| 11:00 | ✕ | 16% | 24135m | 26% | 43% | 39° |
| 12:00 | ✕ | 76% | 24134m | 39% | 43% | 29° |
| 13:00 | ✕ | 98% | 24134m | 45% | 43% | 18° |
| 14:00 | ✕ | 75% | 24134m | 50% | 43% | 7.1° |
| 15:00 | ✕ | 95% | 24135m | 56% | 43% | -3.2° |
| 16:00 | ✕ | 71% | 24134m | 62% | 43% | -13° |
| 17:00 | ✕ | 100% | 14903m | 67% | 43% | -21° |
| 18:00 | ✕ | 100% | 24135m | 72% | 32% | -27° |
| 19:00 | ✕ | 88% | 24135m | 55% | 32% | -31° |
| 20:00 | ✕ | 3.9% | 24135m | 39% | 32% | -33° |
| 21:00 | ✕ | 4.8% | 24134m | 22% | 32% | -31° |
| 22:00 | ✓ | 1.7% | 24134m | 22% | 32% | -26° |
| 23:00 | ✓ | 28% | 24134m | 22% | 32% | -19° |
| Thu, Jul 9 | ||||||
| 24:00 | ✓ | 100% | 24135m | 22% | 32% | -10° |
| 01:00 | ✓ | 99% | 24135m | 15% | 32% | -0.47° |
| 02:00 | ✓ | 48% | 24134m | 7.4% | 32% | 10° |
| 03:00 | ✓ | 59% | 24135m | 0% | 32% | 21° |
| 04:00 | ✕ | 0% | 24134m | 0% | 32% | 32° |
| 05:00 | ✕ | 0% | 24135m | 0% | 32% | 43° |
| 06:00 | ✕ | 0% | 24135m | 0% | 32% | 54° |
| 07:00 | ✕ | 0% | 24134m | 0% | 32% | 63° |
| 08:00 | ✕ | 3.8% | 24135m | 0% | 32% | 68° |
| 09:00 | ✕ | 0.3% | 24135m | 0% | 32% | 68° |
| 10:00 | ✕ | 3.2% | 24134m | 4.6% | 32% | 61° |
| 11:00 | ✕ | 15% | 24135m | 9.2% | 32% | 52° |
| 12:00 | ✕ | 96% | 24135m | 14% | 32% | 41° |
| 13:00 | ✕ | 100% | 24134m | 17% | 32% | 31° |
| 14:00 | ✕ | 91% | 24135m | 19% | 32% | 20° |
| 15:00 | ✕ | 100% | 24135m | 22% | 32% | 9.3° |
| 16:00 | ✕ | 99% | 24135m | 22% | 32% | -0.55° |
| 17:00 | ✕ | 86% | 24135m | 22% | 32% | -9.5° |
| 18:00 | ✕ | 97% | 24135m | 22% | 22% | -17° |
| 19:00 | ✕ | 69% | 24135m | 15% | 22% | -23° |
| 20:00 | ✕ | 47% | 24135m | 7.4% | 22% | -27° |
| 21:00 | ✕ | 100% | 24134m | 0% | 22% | -27° |
| 22:00 | ✓ | 22% | 24135m | 0% | 22% | -25° |
| 23:00 | ✓ | 100% | 24134m | 0% | 22% | -21° |
| Fri, Jul 10 | ||||||
| 24:00 | ✓ | 99% | 24135m | 0% | 22% | -14° |
| 01:00 | ✓ | 4.5% | 24134m | 0% | 22% | -5.8° |
| 02:00 | ✓ | 1.7% | 24134m | 0% | 22% | 3.6° |
| 03:00 | ✓ | 0% | 24135m | 0% | 22% | 14° |
| 04:00 | ✕ | 2.1% | 24134m | 0% | 22% | 25° |
| 05:00 | ✕ | 4.4% | 24134m | 0% | 22% | 35° |
| 06:00 | ✕ | 4.2% | 24134m | 0% | 22% | 47° |
| 07:00 | ✕ | 2.1% | 24135m | 0% | 22% | 57° |
| 08:00 | ✕ | 0% | 24134m | 0% | 22% | 67° |
| 09:00 | ✕ | 3.2% | 24134m | 0% | 22% | 73° |
| 10:00 | ✕ | 8.9% | 24135m | 0% | 22% | 72° |
| 11:00 | ✕ | 45% | 24135m | 0% | 22% | 64° |
| 12:00 | ✕ | 39% | 24135m | 0% | 22% | 54° |
| 13:00 | ✕ | 27% | 24135m | 0% | 22% | 44° |
| 14:00 | ✕ | 14% | 24135m | 0% | 22% | 33° |
| 15:00 | ✕ | 1.5% | 24135m | 0% | 22% | 22° |
| 16:00 | ✕ | 1% | 24135m | 0% | 22% | 12° |
| 17:00 | ✕ | 0.5% | 24135m | 0% | 22% | 2.2° |
| 18:00 | ✕ | 0% | 24135m | 0% | 13% | -6.5° |
| 19:00 | ✕ | 0.87% | 24135m | 0% | 13% | -14° |
| 20:00 | ✕ | 1.7% | 24135m | 0% | 13% | -19° |
| 21:00 | ✕ | 2.6% | 24135m | 0% | 13% | -23° |
| 22:00 | ✓ | 1.7% | 24135m | 0% | 13% | -24° |
| 23:00 | ✓ | 0.87% | 24135m | 0% | 13% | -22° |
| Sat, Jul 11 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 13% | -18° |
| 01:00 | ✓ | 0% | 24135m | 0% | 13% | -11° |
| 02:00 | ✓ | 0% | 24135m | 0% | 13% | -3.3° |
| 03:00 | ✓ | 0% | 24135m | 0% | 13% | 5.8° |
| 04:00 | ✕ | 0% | 24135m | 0% | 13% | 16° |
| 05:00 | ✕ | 0% | 24135m | 0% | 13% | 26° |
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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