StarsOutAlert me on good nights
Should you go outside tonight?
Not worth it tonight
Clouds will block the view. Stay inside.
Boston
2.5
out of 10
Peak 2h
5.602:00–04:00
Prime 21–01
2.221:00–01:00
Best this week
7.5Sat, Jun 6
Moon
Full Moon
100% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 21:07–05:33
📍 SE · 7°
Sky now
Overcast · 100%
Measured at KBOS · 4km away · 16min ago
Sun ↓ 20:13·Dark from 21:13·90% clouds
🔭
Moon visible today
18:07 – 20:13 · 100% lit · great for telescope viewing
Next great night
Saturday — 7.5
🌙 Good night ahead
Sky quality tonight
Best: 02:00–04:00This week’s nights
America/New YorkHow 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.