Rule
Dark Skies
Estes Park - Dark Skies - Rocky Mountains
Estes Park, 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)
Estes Park
Today · 23:00–01:00 · 2h window
Medium confidence
46%
🌛Moon Altitude-18.2--9.5°
☁️Total Cloud Coverage0.3-7.4%
Pristine Dark Skies (pristine)
Estes Park
Fri, Jul 10 · 01:00–03:40
🌛Moon Altitude:-5.1-14.7°
Medium
Pristine Dark Skies (pristine)
Estes Park
Fri, Jul 10 · 22:33–03:41
🌛Moon Altitude:-23.7-6.6°
Medium
Pristine Dark Skies (pristine)
Estes Park
Sat, Jul 11 · 22:33–03:42
🌛Moon Altitude:-21.7--2.1°
Medium
Pristine Dark Skies (pristine)
Estes Park
Sun, Jul 12 · 22:32–03:43
🌛Moon Altitude:-22--11°
Medium
Pristine Dark Skies (pristine)
Estes Park
Mon, Jul 13 · 22:31–03:45
🌛Moon Altitude:-24.4--12.4°
Medium
Pristine Dark Skies (pristine)
Estes Park
Wed, Jul 15 · 03:00–03:46
🌛Moon Altitude:-27.7°
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 | ||||||
| 22:00 | ✓ | 50% | 24135m | 39% | 43% | -24° |
| 23:00 | ✓ | 24% | 24134m | 39% | 43% | -15° |
| Wed, Jul 8 | ||||||
| 24:00 | ✓ | 55% | 24135m | 39% | 43% | -5.2° |
| 01:00 | ✓ | 15% | 24134m | 0% | 43% | 5.5° |
| 02:00 | ✓ | 65% | 24135m | 0% | 43% | 17° |
| 03:00 | ✓ | 85% | 24134m | 0% | 43% | 28° |
| 04:00 | ✕ | 21% | 24134m | 0% | 43% | 39° |
| 05:00 | ✕ | 38% | 24134m | 0% | 43% | 49° |
| 06:00 | ✕ | 86% | 24134m | 0% | 43% | 58° |
| 07:00 | ✕ | 4.5% | 24134m | 0% | 43% | 63° |
| 08:00 | ✕ | 0% | 24135m | 0% | 43% | 63° |
| 09:00 | ✕ | 2.2% | 24135m | 0% | 43% | 57° |
| 10:00 | ✕ | 98% | 24135m | 13% | 43% | 49° |
| 11:00 | ✕ | 100% | 24135m | 26% | 43% | 38° |
| 12:00 | ✕ | 90% | 24134m | 39% | 43% | 28° |
| 13:00 | ✕ | 89% | 24134m | 53% | 43% | 17° |
| 14:00 | ✕ | 98% | 24134m | 68% | 43% | 6.1° |
| 15:00 | ✕ | 100% | 24135m | 83% | 43% | -4.1° |
| 16:00 | ✕ | 100% | 24134m | 85% | 43% | -14° |
| 17:00 | ✕ | 90% | 24134m | 88% | 43% | -22° |
| 18:00 | ✕ | 75% | 24135m | 91% | 32% | -28° |
| 19:00 | ✕ | 100% | 21030m | 60% | 32% | -32° |
| 20:00 | ✕ | 58% | 24135m | 30% | 32% | -33° |
| 21:00 | ✕ | 42% | 24134m | 0% | 32% | -30° |
| 22:00 | ✓ | 48% | 24134m | 0% | 32% | -25° |
| 23:00 | ✓ | 0.3% | 24134m | 0% | 32% | -18° |
| Thu, Jul 9 | ||||||
| 24:00 | ✓ | 7.4% | 24135m | 0% | 32% | -9.5° |
| 01:00 | ✓ | 95% | 24135m | 0% | 32% | 0.39° |
| 02:00 | ✓ | 92% | 24134m | 0% | 32% | 11° |
| 03:00 | ✓ | 96% | 24135m | 0% | 32% | 22° |
| 04:00 | ✕ | 75% | 24134m | 0% | 32% | 33° |
| 05:00 | ✕ | 4.3% | 24135m | 0% | 32% | 44° |
| 06:00 | ✕ | 0% | 24135m | 0% | 32% | 55° |
| 07:00 | ✕ | 0% | 24134m | 7.4% | 32% | 64° |
| 08:00 | ✕ | 0% | 24135m | 15% | 32% | 69° |
| 09:00 | ✕ | 3.1% | 24135m | 22% | 32% | 68° |
| 10:00 | ✕ | 100% | 24134m | 34% | 32% | 61° |
| 11:00 | ✕ | 100% | 24135m | 45% | 32% | 51° |
| 12:00 | ✕ | 89% | 24135m | 56% | 32% | 40° |
| 13:00 | ✕ | 91% | 24134m | 43% | 32% | 30° |
| 14:00 | ✕ | 100% | 24135m | 30% | 32% | 19° |
| 15:00 | ✕ | 60% | 24135m | 17% | 32% | 8.4° |
| 16:00 | ✕ | 100% | 24135m | 24% | 32% | -1.5° |
| 17:00 | ✕ | 91% | 24135m | 31% | 32% | -10° |
| 18:00 | ✕ | 96% | 24135m | 38% | 22% | -18° |
| 19:00 | ✕ | 3.9% | 24135m | 25% | 22% | -24° |
| 20:00 | ✕ | 2% | 24135m | 13% | 22% | -27° |
| 21:00 | ✕ | 86% | 24134m | 0% | 22% | -28° |
| 22:00 | ✓ | 67% | 24135m | 0% | 22% | -25° |
| 23:00 | ✓ | 21% | 24134m | 0% | 22% | -20° |
| Fri, Jul 10 | ||||||
| 24:00 | ✓ | 40% | 24135m | 0% | 22% | -13° |
| 01:00 | ✓ | 3.6% | 24134m | 0% | 22% | -5.1° |
| 02:00 | ✓ | 0.7% | 24134m | 0% | 22% | 4.5° |
| 03:00 | ✓ | 0% | 24135m | 0% | 22% | 15° |
| 04:00 | ✕ | 0% | 24134m | 0% | 22% | 25° |
| 05:00 | ✕ | 0% | 24134m | 0% | 22% | 36° |
| 06:00 | ✕ | 0% | 24134m | 0% | 22% | 48° |
| 07:00 | ✕ | 0% | 24135m | 7.4% | 22% | 58° |
| 08:00 | ✕ | 0% | 24134m | 15% | 22% | 68° |
| 09:00 | ✕ | 0% | 24134m | 22% | 22% | 73° |
| 10:00 | ✕ | 30% | 24135m | 31% | 22% | 71° |
| 11:00 | ✕ | 98% | 24135m | 41% | 22% | 64° |
| 12:00 | ✕ | 100% | 24135m | 50% | 22% | 53° |
| 13:00 | ✕ | 87% | 24135m | 39% | 22% | 43° |
| 14:00 | ✕ | 74% | 24135m | 28% | 22% | 32° |
| 15:00 | ✕ | 61% | 24135m | 17% | 22% | 21° |
| 16:00 | ✕ | 46% | 24135m | 24% | 22% | 11° |
| 17:00 | ✕ | 30% | 24135m | 31% | 22% | 1.3° |
| 18:00 | ✕ | 15% | 24135m | 38% | 13% | -7.3° |
| 19:00 | ✕ | 19% | 24135m | 25% | 13% | -15° |
| 20:00 | ✕ | 24% | 24135m | 13% | 13% | -20° |
| 21:00 | ✕ | 28% | 24135m | 0% | 13% | -23° |
| 22:00 | ✓ | 19% | 24135m | 0% | 13% | -24° |
| 23:00 | ✓ | 9.3% | 24135m | 0% | 13% | -22° |
| Sat, Jul 11 | ||||||
| 24:00 | ✓ | 0% | 24135m | 0% | 13% | -17° |
| 01:00 | ✓ | 0% | 24135m | 0% | 13% | -11° |
| 02:00 | ✓ | 0% | 24135m | 0% | 13% | -2.6° |
| 03:00 | ✓ | 0% | 24135m | 0% | 13% | 6.6° |
| 04:00 | ✕ | 5.8% | 24135m | 0% | 13% | 17° |
| 05:00 | ✕ | 12% | 24135m | 0% | 13% | 27° |
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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