Stargazing Weather vs SkyWindow

Starglow is your stargazing forecast. It tells you when the sky will be clear, where it will be darkest, and what you’ll see when you get there. KNOW WHEN TO LOOK UP An hour-by-hour timeline shows when conditions are best tonight: • Total cloud cover, plus high, mid and low cloud • Visibility and viewing quality, hour by hour • Seeing and transparency: steady air for planets, clear air for galaxies (Pro) • Models Clear: how many of six weather models agree on a clear sky (Pro) • Forecasts up to 5 days ahead (Pro) FIND DARK SKIES • Dark Site Finder: light pollution from NASA satellite data, your Bortle class, and the darkest places nearby ranked by tonight’s cloud (Pro) • Best Location Tonight: your saved spots ranked by cloud and darkness (Pro) • Save and name your favourite observing spots (Pro) SEE THE SKY BEFORE YOU GO • Moon map and AR: the Moon’s direction, path and phase, on the map or through your camera • 3D Map with real terrain and buildings, and the Moon at its true size (Pro) • Vantage Point: stand anywhere and see the Moon, stars, planets, the Milky Way and the ISS over the real skyline (Pro) • Star Trails: plan a long exposure and preview every trail over the skyline (Pro) • ISS passes in AR: follow the station’s path across your sky (Pro) NEVER MISS A CLEAR NIGHT • Alerts for dark skies, moonrise and moonset, new and full Moons, and ISS passes • Clear night alerts when a good night is coming (Pro) • Home and Lock Screen widgets (Pro) • Siri and Shortcuts: ask about tonight’s sky, the Moon phase or the next ISS pass • Red night mode to protect your night vision STARGLOW PRO Pro unlocks 5-day forecasts, seeing and transparency, the Dark Site Finder, Vantage Point, Star Trails, widgets and more. Share it with up to five family members. Already using Alpenglow for sunrise and sunset? Pair it with Starglow to cover the sky from golden hour to the Milky Way. Terms of Use: https://starglowapp.com/terms Privacy Policy: https://starglowapp.com/privacy

SkyWindow tells you what you can actually see from your backyard tonight — not a generic all-sky chart. YOUR REAL SKY Capture your horizon with your phone (eight compass directions). SkyWindow uses AI to trace trees, roofs, and buildings, then filters every target list to what clears your skyline. TONIGHT'S VERDICT Get a clear GO, MAYBE, or STAY IN call based on cloud cover, wind, moon phase, and how many good targets are up for your site and gear. EQUIPMENT-AWARE TARGETS Add telescopes, binoculars, or a Seestar S30. Targets are matched to your field of view and aperture — no more hunting for objects you can't frame or resolve. PLAN & LOG Drag targets into an observing plan, browse the calendar, and log sessions with notes and what you saw. EVENING REMINDERS Turn on notifications in Profile. Around 8 pm local time, SkyWindow can nudge you when skies look worth opening the app. LANGUAGES English, Deutsch, Francais, Espanol, and Japanese. Change anytime in Profile. SkyWindow is built for amateur astronomers who observe from light-polluted backyards — where the horizon matters as much as the forecast.