StarsOut
Should you go outside tonight?
Great night tonight
Clear skies and dark conditions. Go outside.
Stuttgart
9.0
out of 10
Cautious estimate
Models split — score biased toward the cloudier forecast.
Peak 2h
10.020:00–22:00
Prime 21–01
9.921:00–01:00
Best this week
9.2Thu, Sep 17
Moon
New Moon
0% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 07:09–19:39
📍 S · 41°
Full moon: Sep 26
Sun ↓ 19:44·Dark from 20:44·18% clouds
Alert me on good nightsSky quality tonight
Best: 20:00–22:00This week’s nights
Europe/BerlinHow 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.