StarsOutAlert me on good nights
Should you go outside tonight?
Might be worth a look
Partial clearing expected. Keep an eye out.
Zwolle
4.6
out of 10
Cautious estimate
Models split — score biased toward the cloudier forecast.
Peak 2h
8.001:00–03:00
Prime 21–01
5.121:00–01:00
Best this week
8.0Sat, Sep 5
Moon
Waning Gibbous
84% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:53–10:46
📍 W · 21°
Full moon: Sep 26
Sun ↓ 20:26·Dark from 21:26·46% clouds
🔭
Moon visible today
06:46 – 09:24 · 84% lit · great for telescope viewing
Next great night
Wednesday — 7.9
✨ Great night tonight
Sky quality tonight
Best: 01:00–03:00This week’s nights
Europe/AmsterdamHow 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.