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
Pristine Dark Skies (pristine)
Durango
Tomorrow · 22:21–03:00 · 5h window
Medium confidence
43%
🌛Moon Altitude-28.5-2°
☁️Total Cloud Coverage0-0.3%
Good Dark Skies
Durango
Fri, Jul 10 · 04:00–04:05
🌛Moon Altitude:23.7°
Medium
Pristine Dark Skies (pristine)
Durango
Fri, Jul 10 · 22:20–04:00
🌛Moon Altitude:-26.8-4°
Medium
Pristine Dark Skies (pristine)
Durango
Sun, Jul 12 · 24:00–04:07
🌛Moon Altitude:-23.3-4.1°
Medium
Pristine Dark Skies (pristine)
Durango
Mon, Jul 13 · 03:00–04:00
🌛Moon Altitude:-14.2°
Medium
Pristine Dark Skies (pristine)
Durango
Mon, Jul 13 · 22:18–04:00
🌛Moon Altitude:-27.5--14°
Medium
Pristine Dark Skies (pristine)
Durango
Wed, Jul 15 · 03:00–04:00
🌛Moon Altitude:-31°
Medium
+2 more windows in the next 10 days
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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 | ||||||
| 23:00 | ✓ | 50% | 15242m | 28% | 43% | -18° |
| Wed, Jul 8 | ||||||
| 24:00 | ✓ | 98% | 23550m | 22% | 43% | -7.4° |
| 01:00 | ✓ | 57% | 14228m | 17% | 43% | 3.8° |
| 02:00 | ✓ | 83% | 24135m | 8.7% | 43% | 15° |
| 03:00 | ✓ | 61% | 24134m | 0% | 43% | 27° |
| 04:00 | ✓ | 62% | 24134m | 0% | 43% | 39° |
| 05:00 | ✕ | 100% | 24134m | 0% | 43% | 50° |
| 06:00 | ✕ | 94% | 24134m | 0% | 43% | 59° |
| 07:00 | ✕ | 94% | 24134m | 5.6% | 43% | 66° |
| 08:00 | ✕ | 14% | 24135m | 11% | 43% | 66° |
| 09:00 | ✕ | 4.6% | 24135m | 17% | 43% | 60° |
| 10:00 | ✕ | 5% | 24135m | 30% | 43% | 51° |
| 11:00 | ✕ | 4.8% | 24135m | 44% | 43% | 40° |
| 12:00 | ✕ | 42% | 24134m | 57% | 43% | 29° |
| 13:00 | ✕ | 88% | 23508m | 51% | 43% | 18° |
| 14:00 | ✕ | 53% | 24134m | 45% | 43% | 6.4° |
| 15:00 | ✕ | 89% | 24135m | 39% | 43% | -4.4° |
| 16:00 | ✕ | 48% | 24134m | 42% | 43% | -14° |
| 17:00 | ✕ | 100% | 24134m | 46% | 43% | -23° |
| 18:00 | ✕ | 54% | 24135m | 49% | 32% | -30° |
| 19:00 | ✕ | 100% | 24135m | 49% | 32% | -35° |
| 20:00 | ✕ | 87% | 17120m | 50% | 32% | -36° |
| 21:00 | ✕ | 5% | 24134m | 50% | 32% | -34° |
| 22:00 | ✓ | 37% | 24134m | 46% | 32% | -29° |
| 23:00 | ✓ | 92% | 24134m | 42% | 32% | -21° |
| Thu, Jul 9 | ||||||
| 24:00 | ✓ | 82% | 24135m | 38% | 32% | -12° |
| 01:00 | ✓ | 16% | 24135m | 25% | 32% | -1.9° |
| 02:00 | ✓ | 93% | 24134m | 13% | 32% | 9° |
| 03:00 | ✓ | 24% | 24135m | 0% | 32% | 20° |
| 04:00 | ✓ | 24% | 24134m | 0% | 32% | 32° |
| 05:00 | ✕ | 3.9% | 24135m | 0% | 32% | 44° |
| 06:00 | ✕ | 1.6% | 24135m | 0% | 32% | 55° |
| 07:00 | ✕ | 0.7% | 24134m | 0% | 32% | 65° |
| 08:00 | ✕ | 0% | 24135m | 0% | 32% | 72° |
| 09:00 | ✕ | 0% | 24135m | 0% | 32% | 71° |
| 10:00 | ✕ | 0.7% | 24134m | 0% | 32% | 63° |
| 11:00 | ✕ | 3% | 24135m | 0% | 32% | 53° |
| 12:00 | ✕ | 27% | 24135m | 0% | 32% | 42° |
| 13:00 | ✕ | 69% | 24134m | 0% | 32% | 31° |
| 14:00 | ✕ | 61% | 24135m | 0% | 32% | 19° |
| 15:00 | ✕ | 5% | 24135m | 0% | 32% | 8.4° |
| 16:00 | ✕ | 4.1% | 24135m | 0% | 32% | -2° |
| 17:00 | ✕ | 0% | 24135m | 0% | 32% | -11° |
| 18:00 | ✕ | 0.1% | 24135m | 0% | 22% | -20° |
| 19:00 | ✕ | 1% | 24135m | 0% | 22% | -26° |
| 20:00 | ✕ | 0% | 24135m | 0% | 22% | -30° |
| 21:00 | ✕ | 0% | 24134m | 0% | 22% | -31° |
| 22:00 | ✓ | 0% | 24135m | 0% | 22% | -29° |
| 23:00 | ✓ | 0% | 24134m | 0% | 22% | -24° |
| Fri, Jul 10 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 22% | -17° |
| 01:00 | ✓ | 0% | 24134m | 0% | 22% | -7.8° |
| 02:00 | ✓ | 0.3% | 24134m | 0% | 22% | 2° |
| 03:00 | ✓ | 39% | 24135m | 0% | 22% | 13° |
| 04:00 | ✓ | 17% | 24134m | 0% | 22% | 24° |
| 05:00 | ✕ | 1.5% | 24134m | 0% | 22% | 35° |
| 06:00 | ✕ | 0.3% | 24134m | 0% | 22% | 47° |
| 07:00 | ✕ | 0% | 24135m | 0% | 22% | 58° |
| 08:00 | ✕ | 1.1% | 24134m | 0% | 22% | 69° |
| 09:00 | ✕ | 4.8% | 24134m | 0% | 22% | 76° |
| 10:00 | ✕ | 4.9% | 24135m | 17% | 22% | 75° |
| 11:00 | ✕ | 0% | 24135m | 33% | 22% | 66° |
| 12:00 | ✕ | 3% | 24135m | 50% | 22% | 55° |
| 13:00 | ✕ | 29% | 24135m | 33% | 22% | 44° |
| 14:00 | ✕ | 55% | 24135m | 17% | 22% | 33° |
| 15:00 | ✕ | 81% | 24135m | 0% | 22% | 21° |
| 16:00 | ✕ | 55% | 24135m | 0% | 22% | 11° |
| 17:00 | ✕ | 30% | 24135m | 0% | 22% | 0.63° |
| 18:00 | ✕ | 4.9% | 24135m | 0% | 13% | -8.5° |
| 19:00 | ✕ | 3.3% | 24135m | 0% | 13% | -16° |
| 20:00 | ✕ | 1.6% | 24135m | 0% | 13% | -22° |
| 21:00 | ✕ | 0% | 24135m | 0% | 13% | -26° |
| 22:00 | ✓ | 0% | 24135m | 0% | 13% | -27° |
| 23:00 | ✓ | 0% | 24135m | 0% | 13% | -25° |
| Sat, Jul 11 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 13% | -20° |
| 01:00 | ✓ | 0% | 24135m | 0% | 13% | -14° |
| 02:00 | ✓ | 0% | 24135m | 0% | 13% | -5.4° |
| 03:00 | ✓ | 0% | 24135m | 0% | 13% | 4° |
| 04:00 | ✓ | 33% | 24135m | 0% | 13% | 14° |
| 05:00 | ✕ | 67% | 24135m | 0% | 13% | 25° |
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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