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Rule Dark Skies

Dark Skies - Atacama Desert

Atacama, Chile

Atacama dark sky photography. Track astrophotography conditions in the world's driest desert.

This forecast tracks the conditions that make the Atacama Desert the world's premier astrophotography destination. We combine cloud cover, moon phase, and atmospheric transparency data to predict optimal Milky Way and deep-sky conditions.

The Atacama is the driest non-polar desert on Earth, with some areas receiving no measurable rainfall for decades. This extreme aridity, combined with high altitude and minimal light pollution, creates the clearest skies in the world—which is why the world's major observatories are located here.

What makes Atacama special for astrophotography:

  • Exceptional clarity - The driest air on Earth means minimal atmospheric distortion
  • Southern skies - View the Milky Way core and Southern Hemisphere objects invisible from the north
  • High altitude - Locations above 2,400m reduce atmospheric interference
  • 300+ clear nights - Near-guaranteed cloudless conditions year-round

The Milky Way core is best visible from February through October. New moon phases are essential for deep-sky work. The desert landscape offers unique foregrounds—salt flats, rock formations, and volcanic peaks beneath an ocean of stars. Consider guided astronomy tours to access the best dark sites.

Next potential opportunity
San Pedro de Atacama
San Pedro de Atacama, Antofagasta, Chile
Starting in ~1 day 3h
Medium confidence

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in America/Santiago
Next opportunity
Excellent Dark Skies (pristine) at Sunset
San Pedro de Atacama
Tomorrow · 19:00–20:00 · 1h window
Medium confidence
59%
☁️Total Cloud Coverage7.7%
🌕Moon Illumination59.2%
starry-night weather icon
Dark Skies
San Pedro de Atacama
Tomorrow · 20:00–21:00
☁️Total Cloud Coverage:5%
Medium
starry-night weather icon
Good Dark Skies
San Pedro de Atacama
Tomorrow · 21:00–02:00
☁️Total Cloud Coverage:11.9-19.7%
Medium
starry-night weather icon
Pristine Dark Skies (pristine)
San Pedro de Atacama
Mon, Feb 9 · 18:00–19:00
☁️Total Cloud Coverage:0.6%
Medium

What's blocking opportunities

72-hour view of conditions preventing matches across 1 locations

Top 4 blocking conditions across 1 of 1 locations
Some blocked
Most blocked
7 Sat
8 Sun
9 Mon
10 Tue
18
24
06
12
18
24
06
12
18
24
06
12
Moon Illumination (≤ 35.0%)
100% blocked
Precipitation Chance (≤ 10.0%)
54% blocked
Moon Altitude (≤ 10.0°)
51% blocked
Total Cloud Coverage (≤ 20.0%)
44% blocked
How to read: Each row shows when a condition blocks opportunities. Stronger red means more locations are affected. These are the top 4 conditions preventing matches across the 72-hour forecast.

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