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Ancud

-41.871° S 73.816° W · 51 M

48 /100
PEAK

Marginal, but there is a 1 hour gap from 22:00.

BEST WINDOW 22:00–23:00 · ASTRO DARK 20:00–07:00 · MOON 0%

Transparency

0.31

Seeing

0.80

Cloud

26%

Moon

Fair tonight

Hour by hour, local to Ancud. 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

14%

16%

34%

30%

36%

34%

19%

13%

12%

14%

Mid cloud

63%

52%

89%

71%

23%

64%

61%

56%

31%

21%

37%

81%

97%

92%

High cloud

32%

41%

75%

68%

Transparency

0.10

0.22

0.21

0.22

0.21

0.20

0.10

0.29

0.25

0.23

0.24

0.30

0.31

Seeing

0.67

0.80

0.74

0.69

0.70

0.72

0.61

0.52

0.57

0.63

0.66

0.70

0.69

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

18 Clouded out · 0/100

Starting from

100

Cloud

−62

Transparency

−14

Seeing

−2

Moonlight

−0

Darkness

−22

Score

CLOUD 65% LOW 14% MID 63% HIGH 0% SUN 0.9° MOON 3.9° / 0% WIND 5 TEMP 6°

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 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 50

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

1820220002040608

CLOUD BREAKS 22:00CLOUD RETURNS 23:00

SET UP 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 55

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

1820220002040608

CLOUD BREAKS 22:00CLOUD RETURNS 23:00MOONLIGHT IGNORED FOR THIS TARGET

SET UP 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 47

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

1820220002040608

CLOUD BREAKS 22:00CLOUD RETURNS 23:00

SET UP 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 36

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

1820220002040608

CLOUD BREAKS 22:00CLOUD RETURNS 23:00

SET UP 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 53

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

1820220002040608

CLOUD BREAKS 22:00CLOUD RETURNS 23:00

The next week of nights

Tonight · 12 Aug

Fair

MOON 0%
22:00–23:00

Tomorrow · 13 Aug

Poor

MOON 3%

Friday · 14 Aug

Clouded out

MOON 7%

Saturday · 15 Aug

Good

MOON 15%
02:00–03:00

Sunday · 16 Aug

Good

MOON 23%
02:00–03:00

Monday · 17 Aug

Good

MOON 32%
20:00–21:00

Tuesday · 18 Aug

Clouded out

MOON 42%

Nearby locations

About this forecast

Conditions for Ancud, Chile 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 →