StarsOut
Should you go outside tonight?
Drop everything — go outside
Near-perfect conditions. Nights like this are rare.
Düsseldorf
9.2
out of 10
Cautious estimate
Models split — score biased toward the cloudier forecast.
Peak 2h
10.022:00–00:00
Prime 21–01
10.021:00–01:00
Best this week
8.9Sun, Jul 19
Moon
Waxing Crescent
5% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 08:01–22:57
Full moon: Jul 29
Sky now
Clear · 0%
Measured at EDDL · 8km away · 28min ago
Sun ↓ 21:41·Dark from 22:41·50% clouds
Alert me on good nightsSky quality tonight
Best: 22:00–00:00This 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.