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Mek’ī

8.150° N   38.817° E  ·  1663 M
39 /100
PEAK
Marginal, but there is a 3 hours gap from 21:00.
BEST WINDOW 21:00–00:00 · ASTRO DARK 21:00–06:00 · MOON 0%
Transparency
0.28
Seeing
1.00
Cloud
59%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
21
22
23
00
01
02
03
04
05
06
39
37
38
30
30
21
21
5
3
0
BEST WINDOW
Low cloud
4%
8%
2%
6%
8%
20%
24%
40%
52%
47%
Mid cloud
21%
23%
1%
18%
7%
20%
17%
84%
88%
98%
High cloud
45%
44%
77%
80%
88%
81%
72%
34%
25%
13%
Transparency
0.28
0.28
0.27
0.24
0.23
0.23
0.22
0.23
0.24
0.24
Seeing
0.74
0.76
0.83
0.87
0.85
0.86
0.90
0.97
1.00
0.96
Moon clear
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
21 Fair · 39/100
Starting from
100
Cloud
−42
Transparency
−17
Seeing
−3
Moonlight
−0
Darkness
−0
Score
39
CLOUD 59% LOW 4% MID 21% HIGH 45% SUN -33.0° MOON -31.2° / 0% WIND 5 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
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 20:30 · OBSERVE 21:00–00:00 · 3H · MEAN 37

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

2123010305
SET UP 20:30 · OBSERVE 21:00–00:00 · 3H · MEAN 42

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

2123010305
MOONLIGHT IGNORED FOR THIS TARGET
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 59%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 59%
SET UP 20:30 · OBSERVE 21:00–00:00 · 3H · MEAN 36

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

2123010305
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The next week of nights

Tonight · 12 Aug
39
Fair
MOON 0%
21:00–00:00
Tomorrow · 13 Aug
55
Good
MOON 2%
23:00–03:00
Friday · 14 Aug
40
Fair
MOON 6%
21:00–23:00
Saturday · 15 Aug
45
Fair
MOON 13%
21:00–22:00
Sunday · 16 Aug
64
Good
MOON 21%
21:00–22:00
Monday · 17 Aug
63
Good
MOON 30%
21:00–22:00
Tuesday · 18 Aug
64
Good
MOON 39%
21:00–22:00
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Nearby locations

About this forecast

Conditions for Mek’ī, Ethiopia 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 →