StarsOut
Should you go outside tonight?
Great night tonight
Clear skies and dark conditions. Go outside.
Oslo
8.8
out of 10
Cautious estimate
Models split — score biased toward the cloudier forecast.
Peak 2h
9.901:00–03:00
Prime 21–01
9.521:00–01:00
Best this week
9.3Sun, Jul 19
Moon
Waxing Crescent
11% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 08:51–23:07
Full moon: Jul 29
Sky now
Clear · 0%
Measured at ENGM · 37km away · 15min ago
Sun ↓ 22:21·Dark from 23:21·41% clouds
Alert me on good nightsSky quality tonight
Best: 01:00–03:00This week’s nights
Europe/OsloHow 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.