Skyfield: Sky Tonight

See what's in the sky tonight, when to look, and whether it's worth it.

Skyfield answers the question every sky-watcher actually has: what's in the sky tonight, when should I look, and is it even worth going outside?

Open it and get a straight answer for exactly where you are:

IS IT WORTH LOOKING UP TONIGHT? • A live Stargazing forecast — an honest Excellent / Good / Fair / Poor verdict and 0–100 score, from tonight's real cloud cover and the moon's brightness • Your best dark-sky window tonight, with real times ("clear and moonless 11:30pm–1am") • Sky Conditions now — temperature, cloud cover, and what the sky is doing

WHAT'S UP, AND WHEN • Sunset, golden hour and blue hour — to the minute • The moon's phase, how lit it is, and tonight's moonrise & moonset • The next meteor shower peak • Aurora chance for your latitude, from NOAA's live Kp forecast • "The Sun's Path" — a live arc of the sun across the day

YOUR AI SKY GUIDE A new Guide tab reads tonight's real conditions for your location and gives 2–3 short, specific tips: what to look for, the best window to go out, and a sunset/photo tip. It always works — even offline, it falls back to clear, data-based guidance computed on your device. AI is optional and off until you turn it on.

Sky conditions use the free Open-Meteo and NOAA space-weather services; sun, moon and the stargazing forecast are computed on your device and work offline. No account, no sign-up, no tracking.

KEEP WHAT YOU SAW Log a sunset, the full moon, an aurora, or a passing bird in seconds — with a photo and a note. Your year rolls up into a "Year in the Sky" recap to look back on and share.

BUILT FOR YOUR PHONE • Home Screen and Lock Screen widgets with tonight's moon and golden hour • Ask Siri or use Shortcuts: "What's in the sky tonight?" • Full Dynamic Type, dark mode, and accessibility support

Skyfield is free, has no ads, and asks for nothing. Just look up.