StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Brussels
3.4
out of 10
Peak 2h
5.401:00–03:00
Prime 21–01
4.021:00–01:00
Best this week
8.6Sat, Jun 6
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 22:41–05:33
📍 S · 10°
Sky now
Clear · 0%
Measured at EBBR · 13km away · 12min ago
Sun ↓ 21:46·Dark from 22:46·100% clouds
🔭
Moon visible today
18:56 – 21:46 · 98% lit · great for telescope viewing
Next great night
Friday — 7.8
✨ Great night tonight
Sky quality tonight
Best: 01:00–03:00This week’s nights
Europe/BrusselsHow 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.