GoodSeeing
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Nūr

36.572° N   52.015° E
43 /100
PEAK
Marginal, but there is a 1 hour gap from 22:30.
BEST WINDOW 22:30–23:30 · ASTRO DARK 21:30–04:30 · MOON 0%
Transparency
0.54
Seeing
0.98
Cloud
45%
Moon
0%

Fair tonight

Hour by hour, local to Nūr. 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
19
43
25
28
36
31
42
8
0
BEST WINDOW
Low cloud
74%
41%
66%
52%
47%
50%
23%
52%
69%
Mid cloud
9%
8%
4%
14%
9%
18%
28%
27%
38%
High cloud
2%
5%
0%
21%
3%
12%
17%
9%
15%
Transparency
0.54
0.53
0.52
0.52
0.52
0.53
0.51
0.50
0.49
Seeing
0.95
0.98
0.86
0.77
0.77
0.88
0.98
0.83
0.85
Moon clear
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 Poor · 19/100
Starting from
100
Cloud
−77
Transparency
−4
Seeing
−0
Moonlight
−0
Darkness
−0
Score
19
CLOUD 76% LOW 74% MID 9% HIGH 2% SUN -26.5° MOON -25.0° / 0% WIND 3 TEMP 28°
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 22:00 · OBSERVE 22:30–23:30 · 1H · MEAN 43

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

2123010305
CLOUD BREAKS 22:30CLOUD RETURNS 23:30
SET UP 22:00 · OBSERVE 22:30–23:30 · 1H · MEAN 48

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

2123010305
CLOUD BREAKS 22:30CLOUD RETURNS 23:30MOONLIGHT IGNORED FOR THIS TARGET
SET UP 22:00 · OBSERVE 22:30–23:30 · 1H · MEAN 41

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

2123010305
CLOUD BREAKS 22:30CLOUD RETURNS 23:30
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 45%
SET UP 22:00 · OBSERVE 22:30–23:30 · 1H · MEAN 39

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

2123010305
CLOUD BREAKS 22:30CLOUD RETURNS 23:30
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The next week of nights

Tonight · 12 Aug
43
Fair
MOON 0%
22:30–23:30
Tomorrow · 13 Aug
13
Clouded out
MOON 2%
Friday · 14 Aug
13
Clouded out
MOON 6%
Saturday · 15 Aug
35
Fair
MOON 13%
03:30–04:30
Sunday · 16 Aug
19
Poor
MOON 21%
Monday · 17 Aug
68
Good
MOON 30%
21:30–22:30
Tuesday · 18 Aug
76
Excellent
MOON 39%
21:30–22:30
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Nearby locations

About this forecast

Conditions for Nūr, Iran 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 →