StarsOutAlert me on good nights
Should you go outside tonight?
Not worth it tonight
Clouds will block the view. Stay inside.
Kerry
0.5
out of 10
Peak 2h
3.704:00–06:00
Prime 21–01
0.121:00–01:00
Best this week
9.3Mon, Sep 7
Moon
Last Quarter
55% lit
Bright moon — reduces deep sky visibility
🔭 Moon up: 22:22–16:30
Full moon: Sep 26
Sun ↓ 20:23·Dark from 21:23·100% clouds
🔭
Moon visible today
06:56 – 11:50 · 55% lit · great for telescope viewing
Next great night
Friday — 7.6
✨ Great night tonight
Sky quality tonight
Best: 04:00–06:00This week’s nights
Europe/DublinHow 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.