GoodSeeing
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Mlowo

-9.000° S   32.983° E  ·  1591 M
81 /100
PEAK
A genuinely good night — 10 hours of clear, dark sky from 20:00.
BEST WINDOW 20:00–06:00 · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.84
Seeing
0.76
Cloud
0%
Moon
0%

Excellent tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
20
21
22
23
00
01
02
03
04
05
06
07
39
81
80
78
74
74
74
73
70
70
55
0
BEST WINDOW
Low cloud
0%
0%
0%
0%
1%
0%
0%
1%
2%
2%
1%
0%
Mid cloud
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
High cloud
96%
3%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Transparency
0.84
0.82
0.72
0.64
0.55
0.49
0.46
0.46
0.45
0.43
0.44
0.45
Seeing
0.53
0.55
0.61
0.64
0.66
0.70
0.76
0.74
0.69
0.70
0.75
0.83
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
20 Fair · 39/100
Starting from
100
Cloud
−53
Transparency
−3
Seeing
−5
Moonlight
−0
Darkness
−0
Score
39
CLOUD 96% LOW 0% MID 0% HIGH 96% SUN -18.3° MOON -17.2° / 0% WIND 7 TEMP 18°
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.

SET UP 19:30 · OBSERVE 20:00–07:00 · 11H · MEAN 72

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

202200020406
TWILIGHT BEGINS 07:00
SET UP 20:30 · OBSERVE 21:00–07:00 · 10H · MEAN 76

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

202200020406
HIGH CLOUD CLEARS 21:00TWILIGHT BEGINS 07:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 20:30 · OBSERVE 21:00–07:00 · 10H · MEAN 75

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

202200020406
HIGH CLOUD CLEARS 21:00TWILIGHT BEGINS 07:00
SET UP 20:30 · OBSERVE 21:00–07:00 · 10H · MEAN 67

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

202200020406
HIGH CLOUD CLEARS 21:00TWILIGHT BEGINS 07:00
SET UP 20:30 · OBSERVE 21:00–07:00 · 10H · MEAN 82

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

202200020406
HIGH CLOUD CLEARS 21:00TWILIGHT BEGINS 07:00
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The next week of nights

Tonight · 12 Aug
81
Excellent
MOON 0%
20:00–06:00
Tomorrow · 13 Aug
71
Good
MOON 2%
20:00–06:00
Friday · 14 Aug
66
Good
MOON 6%
22:00–06:00
Saturday · 15 Aug
68
Good
MOON 13%
21:00–22:00
Sunday · 16 Aug
79
Excellent
MOON 21%
03:00–04:00
Monday · 17 Aug
84
Excellent
MOON 30%
03:00–04:00
Tuesday · 18 Aug
83
Excellent
MOON 39%
03:00–04:00
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Nearby locations

About this forecast

Conditions for Mlowo, Tanzania 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 →