StarsOut
Is tonight good for stargazing in Ottawa?
Might be worth a look
Partial clearing expected. Keep an eye out.
Ottawa
Tonight's score
5.8
out of 10
Sun ↓ 18:18Dark 19:57–05:4069% cloud, 19:57–05:40
Best 2 hours
9.004:00–05:40
Evening, 21–01
5.421:00–01:00
Best this week
9.6Sun, Oct 18
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: 11:51–20:00
Visible in daylight from 11:51 until sunset
📍 SE · 4°
Full moon: Oct 26
Next good night
Saturday — 7.3
Good night
Sky quality tonight
Best 2 hours: 04:00–05:40This week’s nights
America/TorontoHow 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.