Rule
Dark Skies
Durango - Dark Skies - Rocky Mountains
Pagosa 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
Excellent Dark Skies (pristine)
Durango
Today · 02:00–04:00 · 2h window
Medium confidence
49%
🌛Moon Altitude-2.5-6.7°
☁️Total Cloud Coverage8.8-12.5%
Pristine Dark Skies (pristine)
Durango
Fri, Apr 17 · 21:18–01:00
🌛Moon Altitude:-29.2--5.1°
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° |
|---|---|---|---|---|---|---|
| Wed, Apr 8 | ||||||
| 01:00 | ✓ | 0% | 24135m | 0% | 66% | -4.4° |
| 02:00 | ✓ | 2% | 24134m | 0% | 66% | 4.8° |
| 03:00 | ✓ | 3.3% | 24135m | 0% | 66% | 13° |
| 04:00 | ✓ | 5% | 24134m | 0% | 66% | 19° |
| 05:00 | ✓ | 5% | 24135m | 0% | 66% | 23° |
| 06:00 | ✕ | 5% | 24134m | 0% | 66% | 24° |
| 07:00 | ✕ | 5% | 24135m | 0% | 66% | 23° |
| 08:00 | ✕ | 5% | 24134m | 26% | 66% | 19° |
| 09:00 | ✕ | 5% | 24135m | 39% | 66% | 13° |
| 10:00 | ✕ | 0.8% | 24135m | 35% | 66% | 5.1° |
| 11:00 | ✕ | 2% | 24134m | 30% | 66% | -4.1° |
| 12:00 | ✕ | 22% | 24135m | 26% | 66% | -14° |
| 13:00 | ✕ | 59% | 24135m | 17% | 66% | -25° |
| 14:00 | ✕ | 99% | 24134m | 8.7% | 66% | -36° |
| 15:00 | ✕ | 99% | 24134m | 0% | 66% | -47° |
| 16:00 | ✕ | 100% | 24135m | 0% | 66% | -59° |
| 17:00 | ✕ | 100% | 24135m | 0% | 66% | -70° |
| 18:00 | ✕ | 100% | 24135m | 0% | 57% | -79° |
| 19:00 | ✕ | 89% | 24134m | 0% | 57% | -78° |
| 20:00 | ✕ | 92% | 24134m | 0% | 57% | -69° |
| 21:00 | ✓ | 95% | 24135m | 0% | 57% | -58° |
| 22:00 | ✓ | 87% | 24134m | 0% | 57% | -46° |
| 23:00 | ✓ | 23% | 24135m | 0% | 57% | -35° |
| Thu, Apr 9 | ||||||
| 24:00 | ✓ | 78% | 24134m | 0% | 57% | -23° |
| 01:00 | ✓ | 42% | 24135m | 0% | 57% | -13° |
| 02:00 | ✓ | 13% | 24135m | 0% | 57% | -2.5° |
| 03:00 | ✓ | 8.8% | 24134m | 0% | 57% | 6.7° |
| 04:00 | ✓ | 10% | 24135m | 0% | 57% | 15° |
| 05:00 | ✓ | 13% | 24134m | 0% | 57% | 21° |
| 06:00 | ✕ | 5% | 24134m | 0% | 57% | 24° |
| 07:00 | ✕ | 5% | 24135m | 0% | 57% | 26° |
| 08:00 | ✕ | 4% | 24135m | 0% | 57% | 24° |
| 09:00 | ✕ | 3.9% | 24135m | 0% | 57% | 20° |
| 10:00 | ✕ | 5% | 24134m | 7.4% | 57% | 13° |
| 11:00 | ✕ | 5% | 24135m | 15% | 57% | 4.8° |
| 12:00 | ✕ | 24% | 24135m | 22% | 57% | -4.6° |
| 13:00 | ✕ | 100% | 24135m | 15% | 57% | -15° |
| 14:00 | ✕ | 100% | 24135m | 7.4% | 57% | -26° |
| 15:00 | ✕ | 99% | 24134m | 0% | 57% | -37° |
| 16:00 | ✕ | 100% | 24134m | 0% | 57% | -48° |
| 17:00 | ✕ | 60% | 24135m | 0% | 57% | -60° |
| 18:00 | ✕ | 80% | 24134m | 0% | 47% | -71° |
| 19:00 | ✕ | 97% | 24135m | 0% | 47% | -78° |
| 20:00 | ✕ | 100% | 24135m | 0% | 47% | -76° |
| 21:00 | ✓ | 100% | 24135m | 0% | 47% | -66° |
| 22:00 | ✓ | 100% | 24134m | 0% | 47% | -55° |
| 23:00 | ✓ | 44% | 24135m | 0% | 47% | -43° |
| Fri, Apr 10 | ||||||
| 24:00 | ✓ | 24% | 24135m | 0% | 47% | -32° |
| 01:00 | ✓ | 100% | 24134m | 0% | 47% | -21° |
| 02:00 | ✓ | 74% | 24134m | 0% | 47% | -9.7° |
| 03:00 | ✓ | 100% | 24135m | 0% | 47% | 0.49° |
| 04:00 | ✓ | 100% | 24135m | 0% | 47% | 9.7° |
| 05:00 | ✓ | 83% | 24135m | 0% | 47% | 18° |
| 06:00 | ✕ | 52% | 24135m | 0% | 47% | 24° |
| 07:00 | ✕ | 87% | 24135m | 19% | 47% | 27° |
| 08:00 | ✕ | 100% | 24134m | 37% | 47% | 28° |
| 09:00 | ✕ | 100% | 24135m | 56% | 47% | 26° |
| 10:00 | ✕ | 100% | 24134m | 62% | 47% | 21° |
| 11:00 | ✕ | 100% | 24135m | 67% | 47% | 14° |
| 12:00 | ✕ | 100% | 24134m | 73% | 47% | 5.2° |
| 13:00 | ✕ | 100% | 24135m | 77% | 47% | -4.5° |
| 14:00 | ✕ | 100% | 24135m | 80% | 47% | -15° |
| 15:00 | ✕ | 100% | 24134m | 84% | 47% | -26° |
| 16:00 | ✕ | 100% | 24135m | 87% | 47% | -38° |
| 17:00 | ✕ | 100% | 24135m | 91% | 47% | -49° |
| 18:00 | ✕ | 100% | 24134m | 95% | 38% | -60° |
| 19:00 | ✕ | 100% | 24135m | 80% | 38% | -70° |
| 20:00 | ✕ | 73% | 24134m | 66% | 38% | -76° |
| 21:00 | ✓ | 100% | 24135m | 51% | 38% | -72° |
| 22:00 | ✓ | 100% | 24134m | 65% | 38% | -62° |
| 23:00 | ✓ | 100% | 24013m | 79% | 38% | -51° |
| Sat, Apr 11 | ||||||
| 24:00 | ✓ | 100% | 24135m | 93% | 38% | -40° |
| 01:00 | ✓ | 100% | 24134m | 87% | 38% | -28° |
| 02:00 | ✓ | 100% | 24025m | 82% | 38% | -17° |
| 03:00 | ✓ | 100% | 10910m | 76% | 38% | -5.7° |
| 04:00 | ✓ | 100% | 13708m | 84% | 38% | 4.7° |
| 05:00 | ✓ | 97% | 24135m | 92% | 38% | 14° |
| 06:00 | ✕ | 38% | 20360m | 100% | 38% | 22° |
| 07:00 | ✕ | 54% | 17113m | 100% | 38% | 28° |
| 08:00 | ✕ | 70% | 13866m | 100% | 38% | 31° |
| 09:00 | ✕ | 87% | 10619m | 100% | 38% | 32° |
| 10:00 | ✕ | 59% | 15124m | 100% | 38% | 29° |
| 11:00 | ✕ | 32% | 19629m | 100% | 38% | 23° |
| 12:00 | ✕ | 4% | 24135m | 100% | 38% | 15° |
| 13:00 | ✕ | 14% | 21262m | 89% | 38% | 6.1° |
| 14:00 | ✕ | 25% | 18388m | 79% | 38% | -4.1° |
| 15:00 | ✕ | 35% | 15515m | 69% | 38% | -15° |
| 16:00 | ✕ | 46% | 18388m | 74% | 38% | -26° |
| 17:00 | ✕ | 56% | 21262m | 79% | 38% | -38° |
| 18:00 | ✕ | 66% | 24135m | 84% | 29% | -49° |
| 19:00 | ✕ | 46% | 24135m | 64% | 29% | -60° |
| 20:00 | ✕ | 25% | 24135m | 44% | 29% | -68° |
| 21:00 | ✓ | 4.8% | 24135m | 25% | 29% | -71° |
| 22:00 | ✓ | 28% | 24135m | 25% | 29% | -67° |
| 23:00 | ✓ | 52% | 24135m | 26% | 29% | -57° |
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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