StarsOutAlert me on good nights
Should you go outside tonight?
Might be worth a look
Partial clearing expected. Keep an eye out.
Helsinki
5.5
out of 10
Peak 2h
7.402:00–04:00
Prime 21–01
5.621:00–01:00
Best this week
8.5Fri, Jun 5
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 01:04–04:05
Sun ↓ 22:28·Dark from 23:28·79% clouds
🔭
Moon visible today
18:56 – 22:28 · 98% lit · great for telescope viewing
Next great night
Friday — 8.5
✨ Great night tonight
Sky quality tonight
Best: 02:00–04:00This week’s nights
Europe/HelsinkiHow 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.