StarsOutAlert me on good nights
Should you go outside tonight?
Probably not tonight
Too much cloud cover for a good session.
Cesky Krumlov
4.2
out of 10
Peak 2h
6.303:00–05:00
Prime 21–01
4.121:00–01:00
Best this week
8.0Sun, Jun 7
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 21:46–05:05
📍 S · 10°
Sky now
Mostly cloudy · 75%
Measured at LOWL · 65km away · 18min ago
Sun ↓ 20:57·Dark from 21:57·72% clouds
🔭
Moon visible today
05:03 – 07:26 · 98% lit · great for telescope viewing
Next great night
Friday — 7.9
✨ Great night tonight
Sky quality tonight
Best: 03:00–05:00This week’s nights
Europe/PragueHow 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.