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ClearSkys
Should I stargaze tonight? Go/no go, any location
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.
Top comment
Hi, I'm Steven, an amateur astronomer from Northern Ireland and Dad to an impatient 5 year old. I built ClearSkys after I bought my 5 year old a telescope and spent the next 2 weeks waiting for a night good enough to use it. A regular weather forecast app tells you if it'll rain but it won't tell you if the sky is actually good enough to see anything. In addition to this I found every other stargazing forecast app too data heavy with no clear answer so I built one that just says go or don't go. The underlying data is also available if you want it. ClearSkys pulls cloud cover (three layers), moon phase and altitude, wind, humidity, dew-point spread, atmospheric transparency, and jet-stream seeing for any location on Earth, then scores the night 0–100 with the best viewing window picked out hour by hour. A few things that make it different: 1. Observer profiles let you switch between visual, astrophotography, planetary, and aurora scoring. A thin cirrus layer that ruins deep-sky imaging barely matters for planetary viewing, and the score reflects that. 2. Build your own scoring profile if the presets don't match how you observe. Weight each factor however you like. 3. Twilight scoring for high-latitude summers where the sky never gets fully dark — instead of just saying "no data," we score the usable nautical twilight window with a sky-brightness penalty. 4. ISS and satellite passes, planet visibility windows, aurora alerts — all computed locally, no third-party API dependencies. It's free, no sign-up required, works as a PWA from your browser. I'd love to hear what you think — especially if you're an observer and the scores match (or don't match!) your experience. Try it: https://clearskys.app
About ClearSkys on Product Hunt
“Should I stargaze tonight? Go/no go, any location”
ClearSkys was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #131 on the daily leaderboard. 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.
On the analytics side, ClearSkys competes within Weather and Nature & Outdoors — topics that collectively have 4.1k followers on Product Hunt. The dashboard above tracks how ClearSkys performed against the three products that launched closest to it on the same day.
Who hunted ClearSkys?
ClearSkys was hunted by Steven. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of ClearSkys including community comment highlights and product details, visit the product overview.