Rule
Dark Skies
Vail - Dark Skies - Rocky Mountains
Edwards, 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)
Vail
Tomorrow · 22:34–01:00 · 2h window
Medium confidence
43%
🌛Moon Altitude-26.2--14.6°
☁️Total Cloud Coverage0.2-1.6%
Excellent Dark Skies (pristine)
Vail
Fri, Jul 10 · 02:00–03:00
🌛Moon Altitude:3.4°
Medium
Pristine Dark Skies (pristine)
Vail
Fri, Jul 10 · 22:33–03:50
🌛Moon Altitude:-24.5-5.5°
Medium
Pristine Dark Skies (pristine)
Vail
Sat, Jul 11 · 22:32–03:51
🌛Moon Altitude:-22.5--3.2°
Medium
Pristine Dark Skies (pristine)
Vail
Sun, Jul 12 · 22:31–03:52
🌛Moon Altitude:-22.7--12.1°
Medium
Pristine Dark Skies (pristine)
Vail
Mon, Jul 13 · 22:30–03:54
🌛Moon Altitude:-25.1--12.4°
Medium
Pristine Dark Skies (pristine)
Vail
Wed, Jul 15 · 03:00–03:55
🌛Moon Altitude:-28.6°
Medium
+1 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 | ✓ | 21% | 24134m | 22% | 43% | -16° |
| Wed, Jul 8 | ||||||
| 24:00 | ✓ | 16% | 24135m | 22% | 43% | -6.3° |
| 01:00 | ✓ | 5% | 24134m | 15% | 43% | 4.6° |
| 02:00 | ✓ | 5.1% | 24135m | 7.4% | 43% | 16° |
| 03:00 | ✓ | 5% | 24134m | 0% | 43% | 27° |
| 04:00 | ✕ | 87% | 24134m | 0% | 43% | 38° |
| 05:00 | ✕ | 57% | 24134m | 0% | 43% | 49° |
| 06:00 | ✕ | 1.5% | 24134m | 0% | 43% | 58° |
| 07:00 | ✕ | 0% | 24134m | 0% | 43% | 63° |
| 08:00 | ✕ | 0% | 24135m | 0% | 43% | 64° |
| 09:00 | ✕ | 0% | 24135m | 0% | 43% | 58° |
| 10:00 | ✕ | 3.2% | 24135m | 0% | 43% | 50° |
| 11:00 | ✕ | 7.1% | 24135m | 0% | 43% | 39° |
| 12:00 | ✕ | 94% | 24134m | 0% | 43% | 29° |
| 13:00 | ✕ | 100% | 24134m | 0% | 43% | 18° |
| 14:00 | ✕ | 83% | 24134m | 0% | 43% | 6.7° |
| 15:00 | ✕ | 88% | 24135m | 0% | 43% | -3.7° |
| 16:00 | ✕ | 99% | 24134m | 16% | 43% | -13° |
| 17:00 | ✕ | 78% | 24134m | 33% | 43% | -22° |
| 18:00 | ✕ | 76% | 24135m | 49% | 32% | -28° |
| 19:00 | ✕ | 83% | 24135m | 41% | 32% | -32° |
| 20:00 | ✕ | 1% | 24135m | 34% | 32% | -33° |
| 21:00 | ✕ | 3.6% | 24134m | 26% | 32% | -31° |
| 22:00 | ✓ | 1.6% | 24134m | 26% | 32% | -27° |
| 23:00 | ✓ | 2.9% | 24134m | 26% | 32% | -19° |
| Thu, Jul 9 | ||||||
| 24:00 | ✓ | 16% | 24135m | 26% | 32% | -11° |
| 01:00 | ✓ | 100% | 24135m | 17% | 32% | -0.65° |
| 02:00 | ✓ | 100% | 24134m | 8.7% | 32% | 10° |
| 03:00 | ✓ | 94% | 24135m | 0% | 32% | 21° |
| 04:00 | ✕ | 3.2% | 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 | ✕ | 0% | 24135m | 0% | 32% | 69° |
| 09:00 | ✕ | 3.4% | 24134m | 0% | 32% | 69° |
| 10:00 | ✕ | 4.6% | 24134m | 0% | 32% | 62° |
| 11:00 | ✕ | 3.1% | 24135m | 0% | 32% | 52° |
| 12:00 | ✕ | 91% | 24135m | 0% | 32% | 41° |
| 13:00 | ✕ | 100% | 24134m | 7.4% | 32% | 30° |
| 14:00 | ✕ | 100% | 24135m | 15% | 32% | 19° |
| 15:00 | ✕ | 91% | 24135m | 22% | 32% | 8.9° |
| 16:00 | ✕ | 12% | 24135m | 22% | 32% | -1.1° |
| 17:00 | ✕ | 100% | 24135m | 22% | 32% | -10° |
| 18:00 | ✕ | 100% | 24135m | 22% | 22% | -18° |
| 19:00 | ✕ | 100% | 24135m | 15% | 22% | -24° |
| 20:00 | ✕ | 0.2% | 24135m | 7.4% | 22% | -28° |
| 21:00 | ✕ | 1.5% | 24134m | 0% | 22% | -28° |
| 22:00 | ✓ | 0.2% | 24135m | 0% | 22% | -26° |
| 23:00 | ✓ | 0.5% | 24134m | 0% | 22% | -21° |
| Fri, Jul 10 | ||||||
| 24:00 | ✓ | 1.6% | 24135m | 0% | 22% | -15° |
| 01:00 | ✓ | 50% | 24134m | 0% | 22% | -6.2° |
| 02:00 | ✓ | 5.2% | 24134m | 0% | 22% | 3.4° |
| 03:00 | ✓ | 28% | 24135m | 0% | 22% | 14° |
| 04:00 | ✕ | 13% | 24134m | 0% | 22% | 25° |
| 05:00 | ✕ | 0% | 24134m | 0% | 22% | 36° |
| 06:00 | ✕ | 0% | 24134m | 0% | 22% | 47° |
| 07:00 | ✕ | 0% | 24135m | 0% | 22% | 58° |
| 08:00 | ✕ | 0.1% | 24134m | 0% | 22% | 68° |
| 09:00 | ✕ | 0.1% | 24134m | 0% | 22% | 74° |
| 10:00 | ✕ | 1.2% | 24135m | 0% | 22% | 73° |
| 11:00 | ✕ | 22% | 24135m | 0% | 22% | 65° |
| 12:00 | ✕ | 30% | 24135m | 0% | 22% | 54° |
| 13:00 | ✕ | 41% | 24135m | 0% | 22% | 43° |
| 14:00 | ✕ | 52% | 24135m | 0% | 22% | 32° |
| 15:00 | ✕ | 64% | 24135m | 0% | 22% | 22° |
| 16:00 | ✕ | 44% | 24135m | 0% | 22% | 11° |
| 17:00 | ✕ | 24% | 24135m | 0% | 22% | 1.6° |
| 18:00 | ✕ | 3.5% | 24135m | 0% | 13% | -7.2° |
| 19:00 | ✕ | 2.3% | 24135m | 0% | 13% | -15° |
| 20:00 | ✕ | 1.2% | 24135m | 0% | 13% | -20° |
| 21:00 | ✕ | 0% | 24135m | 0% | 13% | -24° |
| 22:00 | ✓ | 0% | 24135m | 0% | 13% | -24° |
| 23:00 | ✓ | 0% | 24135m | 0% | 13% | -23° |
| Sat, Jul 11 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 13% | -18° |
| 01:00 | ✓ | 0% | 24135m | 0% | 13% | -12° |
| 02:00 | ✓ | 0% | 24135m | 0% | 13% | -3.7° |
| 03:00 | ✓ | 0% | 24135m | 0% | 13% | 5.5° |
| 04:00 | ✕ | 13% | 24135m | 0% | 13% | 16° |
| 05:00 | ✕ | 27% | 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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