StarsOut

Should you go outside tonight?

Not worth it tonight
Clouds will block the view. Stay inside.
Mauna Kea
2.1
out of 10
Peak 2h
3.800:0002:00
Prime 21–01
2.721:0001:00
Best this week
6.1Sun, Jun 7
Moon
Waning Gibbous
98% lit
Very bright — stick to planets and the moon itself
🔭 Moon up: 20:34–07:29
Sun ↓ 18:57·Dark from 19:57·100% clouds
🔭
Moon visible today
05:42 – 07:26 · 98% lit · great for telescope viewing
Alert me on good nights

Sky quality tonight

Best: 00:0002:00

This week’s nights

Pacific/Honolulu

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📍Mauna Kea
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How 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.

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