StarsOutAlert me on good nights
Should you go outside tonight?
Might be worth a look
Partial clearing expected. Keep an eye out.
Reykjavik
5.9
out of 10
Peak 2h
7.802:00–04:00
Prime 21–01
5.821:00–01:00
Best this week
8.7Sun, Sep 6
Moon
Waning Gibbous
75% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:15–13:15
📍 SE · 31°
Full moon: Sep 26
Sky now
Clear · 0%
Measured at BIRK · 2km away · 26min ago
Sun ↓ 20:44·Dark from 21:44·85% clouds
🔭
Moon visible today
06:13 – 10:12 · 75% lit · great for telescope viewing
Next great night
Sunday — 8.7
✨ Great night tonight
Sky quality tonight
Best: 02:00–04:00This week’s nights
Atlantic/ReykjavikHow 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.