StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Shanghai
3.8
out of 10
Low confidence
Currently overcast — score adjusted to match what the sky looks like now.
Peak 2h
7.401:00–03:00
Prime 21–01
5.621:00–01:00
Best this week
9.0Mon, Jun 8
Moon
Waning Gibbous
93% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:00–05:49
📍 SW · 11°
Full moon: Jun 29
Sky now
Mostly cloudy · 75%
Measured at ZSSS · 13km away · 8min ago
Sun ↓ 18:53·Dark from 19:53·32% clouds
🔭
Moon visible today
04:50 – 08:15 · 93% lit · great for telescope viewing
Next great night
Friday — 7.2
🌙 Good night ahead
Sky quality tonight
Best: 01:00–03:00This week’s nights
Asia/ShanghaiHow the score works
60% weight
Cloud cover
Layer-weighted across the best 2-hour window of the night. Low clouds block everything, thin high cirrus still lets bright stars through.
40% weight
Moon darkness
A new moon boosts the score. A full moon near midnight washes out all but the brightest stars. We ease the penalty after midnight when the moon is setting.