StarsOutAlert me on good nights
Should you go outside tonight?
Not worth it tonight
Clouds will block the view. Stay inside.
Mauna Kea
2.1
out of 10
Peak 2h
3.800:00–02:00
Prime 21–01
2.721:00–01:00
Best this week
6.1Sun, Jun 7
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:34–07:29
Sun ↓ 18:57·Dark from 19:57·100% clouds
🔭
Moon visible today
05:42 – 07:26 · 98% lit · great for telescope viewing
Sky quality tonight
Best: 00:00–02:00This week’s nights
Pacific/HonoluluHow 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.