StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Montevideo
6.2
out of 10
Peak 2h
9.519:00–21:00
Prime 21–01
4.021:00–01:00
Best this week
8.3Tue, Jul 21
Moon
Waxing Crescent
5% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 09:32–20:39
Full moon: Jul 29
Sky now
Clear · 0%
Measured at SUMU · 14km away · 44min ago
Sun ↓ 17:52·Dark from 18:52·87% clouds
Alert me on good nightsNext great night
Saturday — 7.1
🌙 Good night ahead
Sky quality tonight
Best: 19:00–21:00This week’s nights
America/MontevideoHow 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.