StarsOut
Should you go outside tonight?
Good night ahead
Mostly clear. Worth setting up.
Cardiff
6.2
out of 10
Clouds
63%
Moon
Waning Crescent
2% lit
Moon below horizon — perfect darkness
Best window
22:00 – 00:00
Sun ↓ 20:08·Dark from 21:08
Alert me on good nightsNext great night
Friday — 7.4
🌙 Good night ahead
Sky quality tonight
Best: 22:00–00:00This week’s nights
Europe/LondonHow 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.