Will tonight be worth the drive?
Pick a spot on Earth. Stellarhound scores each of the next nights on the two things that actually change — cloud and moon — tells you honestly what your sky can show, and points you to the dark-sky sites nearby worth the drive.
No signup. Your location is used only to fetch your forecast — never stored on our servers, never sent to analytics. It stays on your own device so you don’t have to retype it next time.
Want the whole night at a glance? See tonight’s sky agenda — planets, comets, meteors, ISS passes and more, ranked by what’s worth seeing.
New to stargazing? Start here — what you can see tonight with just your eyes, no jargon.
Mark the night · 12–13 August · New MoonPerseid meteor shower 2026 — a moonless peak, forecast for your skyHow the score works
Cloud, in three layers
Low, mid and high cloud are weighted by how much they actually block — hourly across your dark window, from Open-Meteo forecasts.
Moon, honestly counted
Illumination matters only while the moon is up during darkness. Rise and set times are computed locally from high-precision NASA/JPL position data.
Light pollution, shown separately
Your Bortle class is a fixed ceiling on what's visible, not a knock against tonight — so it sits in its own card instead of dragging every night's score down.
One number per night for the weather and moon, with both factors shown, plus a plain read on what your sky can show. When data is missing we say unavailable — we never invent a score. Forecasts of “seeing” (how steady the air is, which blurs fine telescope detail) are out of scope for now.