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Baihe

31.264° N 108.464° E · 182 M

51 /100
PEAK

Marginal, but there is a 4 hours gap from 01:00.

BEST WINDOW 01:00–05:00 · ASTRO DARK 01:00–05:00 · MOON 0%

Transparency

0.37

Seeing

1.00

Cloud

36%

Moon

Fair tonight

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

Sky state

Lighter = daylight and twilight · unshaded = astronomical dark

Score

BEST WINDOW

Low cloud

10%

Mid cloud

30%

27%

26%

48%

66%

High cloud

12%

23%

25%

11%

Transparency

0.29

0.30

0.35

0.36

0.37

0.10

Seeing

1.00

0.99

Moon clear

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 Fair · 46/100

Starting from

100

Cloud

−36

Transparency

−18

Seeing

−0

Moonlight

−0

Darkness

−0

Score

CLOUD 41% LOW 7% MID 30% HIGH 12% SUN -43.7° MOON -42.8° / 0% WIND 2 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.

Deep-sky visualPlanetary & lunarWide-field imagingLong exposureMeteor watching

SET UP 00:30 · OBSERVE 01:00–05:00 · 4H · MEAN 43

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

010305

TWILIGHT BEGINS 05:00

SET UP 00:30 · OBSERVE 01:00–05:00 · 4H · MEAN 52

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

010305

TWILIGHT BEGINS 05:00MOONLIGHT IGNORED FOR THIS TARGET

SET UP 00:30 · OBSERVE 01:00–04:00 · 3H · MEAN 41

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

010305

CLOUD RETURNS 04:00

SET UP 02:30 · OBSERVE 03:00–04:00 · 1H · MEAN 35

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

010305

CLOUD RETURNS 04:00

SET UP 00:30 · OBSERVE 01:00–04:00 · 3H · MEAN 44

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

010305

CLOUD RETURNS 04:00

The next week of nights

Tonight · 12 Aug

Fair

MOON 0%
01:00–05:00

Tomorrow · 13 Aug

Good

MOON 1%
02:00–05:00

Friday · 14 Aug

Good

MOON 5%
01:00–05:00

Saturday · 15 Aug

Good

MOON 10%
02:00–03:00

Sunday · 16 Aug

Poor

MOON 19%

Monday · 17 Aug

Clouded out

MOON 28%

Tuesday · 18 Aug

Good

MOON 37%
02:00–03:00

Nearby locations

About this forecast

Conditions for Baihe, 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 →