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Yingpan

26.450° N   99.150° E  ·  1727 M
37 /100
PEAK
Marginal, but there is a 2 hours gap from 03:00.
BEST WINDOW 03:00–05:00 · ASTRO DARK 01:00–06:00 · MOON 0%
Transparency
0.24
Seeing
1.00
Cloud
57%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
01
02
03
04
05
06
07
4
23
37
37
30
1
0
BEST WINDOW
Low cloud
2%
12%
6%
2%
26%
77%
100%
Mid cloud
97%
48%
21%
40%
23%
35%
18%
High cloud
94%
52%
43%
30%
44%
23%
31%
Transparency
0.10
0.10
0.10
0.24
0.21
0.17
0.15
Seeing
1.00
1.00
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
01 Clouded out · 4/100
Starting from
100
Cloud
−94
Transparency
−2
Seeing
−0
Moonlight
−0
Darkness
−0
Score
4
CLOUD 100% LOW 2% MID 97% HIGH 94% SUN -48.0° MOON -46.9° / 0% WIND 1 TEMP 20°
Excellent 75+ Good 55+ Fair 35+ Poor 15+ Not worth it Seeing is estimated from surface wind — see how we score.
Tonight's limiting factor
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

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 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 36

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

01030507
CLOUD BREAKS 03:00
SET UP 02:30 · OBSERVE 03:00–06:00 · 3H · MEAN 43

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

01030507
CLOUD BREAKS 03:00CLOUD RETURNS 06:00MOONLIGHT 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.

01030507
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.

01030507
CLOUD NEVER DROPS BELOW 57%
SET UP 02:30 · OBSERVE 03:00–04:00 · 1H · MEAN 35

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

01030507
CLOUD BREAKS 03:00
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The next week of nights

Tonight · 12 Aug
37
Fair
MOON 0%
03:00–05:00
Tomorrow · 13 Aug
65
Good
MOON 1%
22:00–23:00
Friday · 14 Aug
32
Poor
MOON 5%
Saturday · 15 Aug
9
Clouded out
MOON 10%
Sunday · 16 Aug
0
Clouded out
MOON 19%
Monday · 17 Aug
13
Clouded out
MOON 28%
Tuesday · 18 Aug
1
Clouded out
MOON 37%
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Nearby locations

About this forecast

Conditions for Yingpan, 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 →