GoodSeeing
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Huayin

34.565° N   110.066° E  ·  348 M
36 /100
PEAK
Marginal, but there is a 2 hours gap from 03:00.
BEST WINDOW 03:00–05:00 · ASTRO DARK 00:00–05:00 · MOON 0%
Transparency
0.33
Seeing
1.00
Cloud
65%
Moon
0%

Fair tonight

Hour by hour, local to Huayin. 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
06
28
31
26
36
36
3
0
BEST WINDOW
Low cloud
6%
9%
25%
22%
31%
88%
56%
Mid cloud
14%
6%
5%
9%
7%
13%
6%
High cloud
91%
89%
89%
56%
41%
45%
0%
Transparency
0.30
0.29
0.30
0.31
0.33
0.33
0.34
Seeing
0.90
0.95
1.00
1.00
1.00
1.00
1.00
Moon clear
down
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 · 28/100
Starting from
100
Cloud
−60
Transparency
−11
Seeing
−1
Moonlight
−0
Darkness
−0
Score
28
CLOUD 92% LOW 6% MID 14% HIGH 91% SUN -39.3° MOON -38.0° / 0% WIND 3 TEMP 22°
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 03:30 · OBSERVE 04:00–05:00 · 1H · MEAN 35

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

00020406
CLOUD RETURNS 05:00
SET UP 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 43

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

00020406
HIGH CLOUD CLEARS 03:00CLOUD RETURNS 05:00MOONLIGHT 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.

00020406
CLOUD NEVER DROPS BELOW 57%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

00020406
CLOUD NEVER DROPS BELOW 57%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

00020406
CLOUD NEVER DROPS BELOW 57%
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The next week of nights

Tonight · 12 Aug
36
Fair
MOON 0%
03:00–05:00
Tomorrow · 13 Aug
73
Good
MOON 1%
21:00–01:00
Friday · 14 Aug
74
Good
MOON 5%
21:00–05:00
Saturday · 15 Aug
56
Good
MOON 10%
02:00–03:00
Sunday · 16 Aug
34
Poor
MOON 19%
Monday · 17 Aug
5
Clouded out
MOON 28%
Tuesday · 18 Aug
67
Good
MOON 37%
02:00–03:00
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Nearby locations

About this forecast

Conditions for Huayin, 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 →