StarsOutAlert me on good nights
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Cancun
6.4
out of 10
Peak 2h
7.801:00–03:00
Prime 21–01
6.521:00–01:00
Best this week
8.9Fri, Sep 4
Moon
Waning Gibbous
84% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:39–09:33
📍 S · 78°
Full moon: Sep 26
Sky now
Clear · 13%
Measured at MMUN · 14km away · 23min ago
Sun ↓ 19:04·Dark from 20:04·22% clouds
🔭
Moon visible today
06:31 – 09:24 · 84% lit · great for telescope viewing
Next great night
Wednesday — 7.8
✨ Great night tonight
Sky quality tonight
Best: 01:00–03:00This week’s nights
America/CancunHow 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.