Dark Skies Forecast for Rocky Mountains
Rocky Mountains astrophotography forecast for Estes Park, Aspen, and the San Juans, tracking darkness, moonlight, cloud, and atmospheric clarity.
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Rocky Mountains astrophotography forecast for Estes Park, Aspen, and the San Juans, tracking darkness, moonlight, cloud, and atmospheric clarity.
This rule looks for true astronomical night, cloud cover no higher than 20%, visibility of at least 12 km, precipitation probability no higher than 10%, and either Moon illumination no higher than 35% or Moon altitude no higher than 10°. It does not calculate Galactic Centre or Milky Way core altitude; check a sky planner for the subject's position.
This forecast identifies clear, dark intervals for stars above Colorado's high country. Estes Park gives access to lake-and-peak foregrounds near Rocky Mountain National Park, while Aspen, Crested Butte, and the San Juan towns of Telluride, Silverton, and Ouray place distinctive ridgelines beneath the Milky Way.
The Galactic core is most useful from spring through early autumn, but access controls the season: high passes and alpine lakes can remain snowbound into June, and summer afternoons often build thunderstorms that leave residual cloud after sunset. Autumn usually brings drier air, while winter offers long darkness but cold, avalanche exposure, and closed roads.
Elevation can improve transparency, but it also increases wind, hypothermia risk, and altitude illness. Nearby ski areas and resort towns create local light domes, so compositions around Aspen, Vail, and Breckenridge need careful orientation. The forecast does not verify trail, pass, or timed-entry status; confirm access and avoid exposed ridges whenever lightning remains possible.
Location status
0 of 10 locations currently active
Estes Park
InactiveEstes Park frames Rocky Mountain National Park’s granite peaks, pine-lined lakes and elk meadows, with autumn color and snow adding seasonal layers.
Estes Park, Colorado, United States
Right now: Total Cloud Coverage too high (33%, ≤ 20.0%)
3 opportunities in next 14 days
Aspen
InactiveAspen combines the Maroon Bells, reflective alpine lakes and broad aspen groves, creating layered mountain compositions in autumn and winter.
Aspen, Colorado, United States
Right now: Total Cloud Coverage too high (84%, ≤ 20.0%)
3 opportunities in next 14 days
Vail
InactiveVail offers forested slopes, Gore Range ridges and snow-covered village details, with creek lines and ski terrain anchoring winter compositions.
Edwards, Colorado, United States
Right now: Total Cloud Coverage too high (92%, ≤ 20.0%)
4 opportunities in next 14 days
Breckenridge
InactiveBreckenridge pairs a historic mining-town streetscape with Tenmile Range peaks, evergreen forests and snowfields for architectural mountain layers.
Silverthorne, Colorado, United States
Right now: Total Cloud Coverage too high (34%, ≤ 20.0%)
4 opportunities in next 14 days
Telluride
InactiveTelluride sits beneath steep San Juan walls, where the box canyon, waterfalls and historic streets create strong foreground-to-summit compositions.
Telluride, Colorado, United States
Right now: Total Cloud Coverage too high (100%, ≤ 20.0%)
2 opportunities in next 14 days
Steamboat Springs
InactiveSteamboat Springs combines Yampa Valley ranchland, aspen groves and Mount Werner, with deep winter snow defining trees, fences and rolling terrain.
Steamboat Springs, Colorado, United States
Right now: Total Cloud Coverage too high (67%, ≤ 20.0%)
3 opportunities in next 14 days
Crested Butte
InactiveCrested Butte offers a distinctive peak above wildflower meadows, aspen-covered slopes and a compact historic town, especially rich in summer and autumn.
Crested Butte, Colorado, United States
Right now: Total Cloud Coverage too high (100%, ≤ 20.0%)
3 opportunities in next 14 days
Durango
InactiveDurango provides access to rugged San Juan peaks, the Animas River and historic railway scenes, with autumn aspens and winter snow adding contrast.
Pagosa Springs, Colorado, United States
Right now: Total Cloud Coverage too high (100%, ≤ 20.0%)
3 opportunities in next 14 days
Silverton
InactiveSilverton’s mining-era streets sit within a tight basin of steep San Juan slopes, creating compressed town-and-mountain views in deep winter snow.
Creede, Colorado, United States
Right now: Visibility too low (7km, ≥ 12000.0m)
4 opportunities in next 14 days
Ouray
InactiveOuray’s historic buildings, ice formations and steep box-canyon walls create vertical compositions framed by the rugged, often snow-covered San Juans.
Ouray, Colorado, United States
Right now: Total Cloud Coverage too high (100%, ≤ 20.0%)
4 opportunities in next 14 days
What's blocking opportunities
95-hour view of conditions preventing matches across 10 locations
How this forecast is made
Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.
The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.
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