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Nueva Granada

9.802° N   74.393° W  ·  113 M
56 /100
PEAK
Worth setting up — 7 hours of workable sky from 22:00.
BEST WINDOW 22:00–05:00 · ASTRO DARK 20:00–05:00 · MOON 1%
Transparency
0.69
Seeing
0.98
Cloud
27%
Moon
1%

Good tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
0
14
39
32
37
36
56
37
40
42
56
30
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
0%
0%
1%
0%
0%
0%
1%
13%
18%
Mid cloud
14%
6%
9%
22%
14%
16%
1%
0%
0%
0%
1%
0%
0%
High cloud
98%
85%
88%
95%
91%
91%
49%
94%
84%
77%
41%
16%
23%
Transparency
0.37
0.34
0.65
0.68
0.69
0.67
0.55
0.46
0.38
0.35
0.35
0.32
0.29
Seeing
0.65
0.73
0.85
0.89
0.89
0.90
0.83
0.90
0.98
0.95
0.97
0.95
0.96
Moon clear
0%
down
down
down
down
down
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
18 Clouded out · 0/100
Starting from
100
Cloud
−60
Transparency
−10
Seeing
−3
Moonlight
−0
Darkness
−27
Score
0
CLOUD 99% LOW 0% MID 14% HIGH 98% SUN 3.2° MOON 7.4° / 0% WIND 6 TEMP 32°
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 01:30 · OBSERVE 02:00–05:00 · 3H · MEAN 43

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

18202200020406
TWILIGHT BEGINS 05:00
SET UP 21:30 · OBSERVE 22:00–06:00 · 8H · MEAN 48

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

18202200020406
TWILIGHT BEGINS 06:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 23:30 · OBSERVE 00:00–01:00 · 1H · MEAN 48

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

18202200020406
HIGH CLOUD CLEARS 00:00CLOUD RETURNS 01:00
SET UP 23:30 · OBSERVE 00:00–01:00 · 1H · MEAN 37

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

18202200020406
HIGH CLOUD CLEARS 00:00CLOUD RETURNS 01:00
SET UP 02:30 · OBSERVE 03:00–05:00 · 2H · MEAN 45

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

18202200020406
TWILIGHT BEGINS 05:00
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The next week of nights

Tonight · 12 Aug
56
Good
MOON 0%
22:00–05:00
Tomorrow · 13 Aug
62
Good
MOON 3%
21:00–05:00
Friday · 14 Aug
51
Fair
MOON 7%
21:00–02:00
Saturday · 15 Aug
1
Clouded out
MOON 15%
Sunday · 16 Aug
0
Clouded out
MOON 23%
Monday · 17 Aug
3
Clouded out
MOON 32%
Tuesday · 18 Aug
37
Fair
MOON 42%
01:00–02:00
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Nearby locations

About this forecast

Conditions for Nueva Granada, Colombia 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 →