StarsOut
Should you go outside tonight?
Great night tonight
Clear skies and dark conditions. Go outside.
Mexico City
8.5
out of 10
Peak 2h
9.300:00–02:00
Prime 21–01
8.121:00–01:00
Best this week
9.1Mon, Jul 20
Moon
Waxing Crescent
2% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 08:26–21:26
Full moon: Jul 29
Sky now
Partly cloudy · 38%
Measured at MMMX · 6km away · 60min ago
Sun ↓ 19:18·Dark from 20:18·52% clouds
Alert me on good nightsSky quality tonight
Best: 00:00–02:00This week’s nights
America/Mexico CityHow 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.