GoodSeeing
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Karoi

-16.810° S   29.692° E  ·  1259 M
47 /100
PEAK
Marginal, but there is a 4 hours gap from 23:00.
BEST WINDOW 23:00–03:00 · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.61
Seeing
0.76
Cloud
31%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
19
20
21
22
23
00
01
02
03
04
05
06
40
27
11
26
45
46
37
43
33
19
47
0
BEST WINDOW
Low cloud
27%
23%
76%
54%
11%
5%
0%
0%
0%
3%
6%
17%
Mid cloud
25%
46%
32%
13%
23%
28%
49%
41%
59%
80%
30%
98%
High cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.61
0.11
0.26
0.28
0.31
0.30
0.33
0.39
0.39
0.38
0.37
0.37
Seeing
0.76
0.76
0.70
0.63
0.52
0.58
0.60
0.64
0.69
0.69
0.65
0.66
Moon clear
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
19 Fair · 40/100
Starting from
100
Cloud
−43
Transparency
−9
Seeing
−3
Moonlight
−0
Darkness
−5
Score
40
CLOUD 45% LOW 27% MID 25% HIGH 0% SUN -16.7° MOON -15.8° / 0% WIND 4 TEMP 19°
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
What the GoodSeeing score actually measures

One number from 0 to 100 per hour, combining cloud, transparency, seeing, moonlight and darkness. Cloud gates everything else — no amount of steady, dark air rescues an overcast sky.

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 22:30 · OBSERVE 23:00–04:00 · 5H · MEAN 44

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

192123010305
CLOUD BREAKS 23:00CLOUD RETURNS 04:00
SET UP 22:30 · OBSERVE 23:00–04:00 · 5H · MEAN 43

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

192123010305
CLOUD BREAKS 23:00CLOUD RETURNS 04:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 22:30 · OBSERVE 23:00–03:00 · 4H · MEAN 44

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

192123010305
CLOUD BREAKS 23:00CLOUD RETURNS 03:00
SET UP 22:30 · OBSERVE 23:00–01:00 · 2H · MEAN 35

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

192123010305
CLOUD BREAKS 23:00CLOUD RETURNS 01:00
SET UP 22:30 · OBSERVE 23:00–03:00 · 4H · MEAN 47

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

192123010305
CLOUD BREAKS 23:00CLOUD RETURNS 03:00
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The next week of nights

Tonight · 12 Aug
47
Fair
MOON 0%
23:00–03:00
Tomorrow · 13 Aug
68
Good
MOON 2%
00:00–05:00
Friday · 14 Aug
42
Fair
MOON 6%
22:00–00:00
Saturday · 15 Aug
79
Excellent
MOON 13%
02:00–03:00
Sunday · 16 Aug
90
Excellent
MOON 21%
02:00–03:00
Monday · 17 Aug
83
Excellent
MOON 30%
02:00–03:00
Tuesday · 18 Aug
84
Excellent
MOON 39%
02:00–03:00
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Nearby locations

About this forecast

Conditions for Karoi, Zimbabwe 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 →