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Yingkou

40.665° N   122.232° E  ·  4 M
43 /100
PEAK
Marginal, but there is a 1 hour gap from 01:00.
BEST WINDOW 01:00–02:00 · ASTRO DARK 00:00–04:00 · MOON 0%
Transparency
0.54
Seeing
0.86
Cloud
73%
Moon
0%

Fair tonight

Hour by hour, local to Yingkou. Colour encodes the score and nothing else; every other measurement is luminance.

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
00
01
02
03
04
05
30
43
30
23
6
0
BEST WINDOW
Low cloud
0%
0%
1%
6%
6%
38%
Mid cloud
19%
9%
9%
25%
51%
60%
High cloud
99%
72%
100%
100%
100%
100%
Transparency
0.54
0.51
0.43
0.36
0.33
0.31
Seeing
0.86
0.80
0.77
0.69
0.66
0.71
Moon clear
down
down
down
down
down
down
Inspect

Cloud tracks show clear sky — a longer bar is better. The figure inside each track is the raw measurement.

Why this hour scored what it did
00 Poor · 30/100
Starting from
100
Cloud
−62
Transparency
−7
Seeing
−1
Moonlight
−0
Darkness
−0
Score
30
CLOUD 99% LOW 0% MID 19% HIGH 99% SUN -34.4° MOON -33.2° / 0% WIND 3 TEMP 26°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.

What are you doing tonight?

The same forecast, weighted for the target. Planetary work barely cares about moonlight; long exposures die on high cloud a visual observer would never notice.

SET UP 00:30 · OBSERVE 01:00–02:00 · 1H · MEAN 41

Darkness and moonlight dominate. Faint fuzzies need a genuinely dark sky more than they need steady air.

000204
HIGH CLOUD CLEARS 01:00CLOUD RETURNS 02:00
SET UP 00:30 · OBSERVE 01:00–02:00 · 1H · MEAN 44

Seeing is everything and moonlight is irrelevant. Bright targets punch through twilight, so darkness barely counts.

000204
HIGH CLOUD CLEARS 01:00CLOUD RETURNS 02:00MOONLIGHT IGNORED FOR THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Tolerates soft seeing, but high cloud wrecks a wide frame and moonlight raises the background everywhere.

000204
CLOUD NEVER DROPS BELOW 73%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

Needs conditions to hold still for hours. Sustained transparency matters more than any single good hour.

000204
CLOUD NEVER DROPS BELOW 73%
SET UP 00:30 · OBSERVE 01:00–02:00 · 1H · MEAN 38

Naked eye, whole sky. Total cloud and moonlight are the only things that count.

000204
HIGH CLOUD CLEARS 01:00CLOUD RETURNS 02:00
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The next week of nights

Tonight · 12 Aug
43
Fair
MOON 0%
01:00–02:00
Tomorrow · 13 Aug
56
Good
MOON 1%
21:00–02:00
Friday · 14 Aug
76
Excellent
MOON 5%
21:00–04:00
Saturday · 15 Aug
61
Good
MOON 10%
02:00–03:00
Sunday · 16 Aug
54
Fair
MOON 19%
02:00–03:00
Monday · 17 Aug
78
Excellent
MOON 28%
02:00–03:00
Tuesday · 18 Aug
22
Poor
MOON 37%
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Nearby locations

About this forecast

Conditions for Yingkou, China are computed from the MET Norway forecast model for these exact coordinates, combined with sun and moon positions we calculate directly. The score weighs cloud cover by layer, atmospheric transparency, estimated seeing, moonlight and how dark the sky actually gets. Read the full method →