StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Chengdu
3.7
out of 10
Peak 2h
5.302:00–04:00
Prime 21–01
3.821:00–01:00
Best this week
8.0Sat, Jun 6
Moon
Waning Gibbous
93% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 21:10–07:03
📍 S · 31°
Full moon: Jun 29
Sky now
Clear · 13%
Measured at ZUUU · 11km away · 8min ago
Sun ↓ 20:01·Dark from 21:01·98% clouds
🔭
Moon visible today
06:01 – 08:15 · 93% lit · great for telescope viewing
Next great night
Friday — 7.2
🌙 Good night ahead
Sky quality tonight
Best: 02:00–04:00This 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.