ClearSkys
Should I stargaze tonight? Go/no go, any location
ClearSkys launched on June 25, 2026 with 4 votes, #3,322 of 22,647 launches that month and more than 75% of that year's launches.
What it does
Will the sky be clear tonight? ClearSkys analyses cloud layers, moon phase, wind, humidity and atmospheric conditions for your location, then scores each hour while also providing a concise go/no go decision. Observer profiles for visual, astrophotography, planetary and aurora — or build your own. Free 7-day forecast, any location worldwide. Daily notifications and weekly digest available.
7-day stargazing forecast for any location. Cloud cover, moon phase, planet visibility, ISS passes, aurora alerts, and a clear-sky score rated 0–100. Free.
Does a similar job
all alternatives →- BABriefsky – a free Dark Sky clone for multiple weather APIs2023 · briefsky.app · ▲172
- AAAstro App2024 · astro.sshh.io · ▲291
I really like Stellarium and SkySafari but I felt like these are primarily geared towards exploring the sky but not so much "here are the long list of things I want to see, when can I see them tonight and where". There's also not really a great option I've found that combines sky object planning + location weather details while still being free so I built this. The UI's heavily inspired by NINAs sky atlas + Robinhood. Right now you can: View the altitude chart of objects and 3D view Create lists of objects of interest View the annual max/min daily altitude of an object to find the best…
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