StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Chengdu
7.5
out of 10
Peak 2h
8.703:00–05:00
Prime 21–01
7.121:00–01:00
Best this week
9.4Sun, Jul 19
Moon
Waxing Crescent
11% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 09:08–22:18
Full moon: Jul 29
Sky now
Partly cloudy · 38%
Measured at ZUUU · 11km away · 63min ago
Sun ↓ 20:06·Dark from 21:06·94% clouds
Alert me on good nightsSky quality tonight
Best: 03:00–05:00This 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.