StarsOut
Is tonight good for stargazing in Tucson?
Drop everything — go outside
Near-perfect conditions. Nights like this are rare.
Tucson
Tonight's score
10.0
out of 10
Sun ↓ 17:52Dark 19:13–05:060% cloud, 19:13–05:06
Best 2 hours
10.019:13–21:00
Evening, 21–01
10.021:00–01:00
Best this week
10.0Thu, Oct 15
Parts of the night. The score above covers the whole dark window.
Moon
Waxing Crescent
20% lit
Moon doesn’t interfere — perfect darkness
Moon up: 10:27–20:17
Visible in daylight from 10:27 until sunset
Full moon: Oct 26
Sky quality tonight
Best 2 hours: 19:13–21:00This week’s nights
America/PhoenixHow the score works
60% weight
Cloud cover
Averaged over the whole dark window, layer by layer. Low cloud blocks everything; thin high cirrus still lets bright stars through.
40% weight
Moon darkness
A new moon boosts the score. A bright Moon only costs points while it is actually above the horizon in the dark hours, and more the higher it stands.