StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Lima
6.7
out of 10
Peak 2h
8.618:00–20:00
Prime 21–01
6.521:00–01:00
Best this week
7.3Mon, Jul 20
Moon
Waxing Crescent
18% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 10:30–23:03
Full moon: Jul 29
Sky now
Overcast · 100%
Measured at SPJC · 8km away · 59min ago
Sun ↓ 17:59·Dark from 18:59·91% clouds
Alert me on good nightsNext great night
Monday — 7.3
🌙 Good night ahead
Sky quality tonight
Best: 18:00–20:00This week’s nights
America/LimaHow 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.