StarsOut
Should you go outside tonight?
Great night tonight
Clear skies and dark conditions. Go outside.
Perth
8.5
out of 10
Peak 2h
9.318:00–20:00
Prime 21–01
9.021:00–01:00
Best this week
8.8Wed, Jul 22
Moon
Waxing Crescent
27% lit
Quarter moon — moderate light
🔭 Moon up: 10:16–22:53
📍 E · 20°
Full moon: Jul 29
Sun ↓ 17:32·Dark from 18:32·38% clouds
Alert me on good nightsSky quality tonight
Best: 18:00–20:00This week’s nights
Australia/PerthHow 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.