lustar vs LookUpTonight

The two biggest factors keeping you from finding that perfect star gazing location are light pollution and weather. Using local weather forecasts and light pollution data, Lustar gives you a searchable map of the world with hourly stargazing forecasts for every location. Check out the Dark Site locations if you're not sure where to start.

When was the last time you left the city? When was the last time the night sky actually stopped you in your tracks? Maybe tonight is that night. You want to stargaze. So you open the weather app. Check the moon. Google what’s visible. Wonder if clouds will ruin things at 2 AM. Open another tab. Still no clear answer. Too much research. Too many tools. Not enough sky. The answer LookUpTonight answers one question: Should I go outside tonight? Open the app. Get a stargazing score from 0–100 and a plain verdict — GO, GOOD, MAYBE, SKIP, or DON’T GO — plus a short line that tells you what it means for your night. No deep research. One tap. Decide. Go. What it does TONIGHT — your verdict • Stargazing score (0–100) built for observers, not commuters • Clear verdict with a human read on the night — not just a number • Live sky background — moon phase, clouds, and stars that reflect conditions at your location • Pull to refresh when you want the latest forecast WHY THIS SCORE • Short checklist — clouds, moon, planets, wind, humidity • Uses hour-by-hour weather through the observing window (astronomical night), not daytime “partly cloudy” • Best observing window when conditions are worth going out • Light pollution context (Bortle scale) so you know what’s realistic from where you are — and when a darker site is worth the drive VISIBLE TONIGHT • What’s above the horizon at your spot — planets and notable objects, with timing and direction CALENDAR — plan ahead • Multi-night forecast with a score for each night • Tap any night for the full breakdown • Compare evenings before you leave the city for dark sky YOUR LOCATION • GPS or search any city • Save favourite spots — home, dark-sky site, weekend getaway • Scores and sky conditions follow you wherever you observe Built for real stargazers LookUpTonight is for anyone who’s tired of juggling apps and still unsure at midnight. Whether you’re in the city hoping for planets, or driving out for the Milky Way, you get one clear answer — so you spend less time on screens and more time under the stars. Leave the routine behind. Look up tonight. Weather data: OpenWeather Light pollution estimates: VIIRS Nighttime Lights (Earth Observation Group, CC-BY 4.0) Location is used for forecasts and site context at your chosen observing spot.