StarsOut
Should you go outside tonight?
Drop everything — go outside
Near-perfect conditions. Nights like this are rare.
Salt Lake City
9.2
out of 10
Peak 2h
9.821:00–23:00
Prime 21–01
9.321:00–01:00
Best this week
9.1Mon, Jul 20
Moon
Waxing Crescent
2% lit
Moon doesn’t interfere — perfect darkness
🔭 Moon up: 08:49–22:40
Full moon: Jul 29
Sky now
Clear · 0%
Measured at KSVR · 18km away · 33min ago
Sun ↓ 20:57·Dark from 21:57·50% clouds
Alert me on good nightsSky quality tonight
Best: 21:00–23:00This week’s nights
America/DenverHow 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.