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Igra

57.555° N   53.054° E  ·  176 M
31 /100
PEAK
Nothing usable opens up tonight.
NO USABLE WINDOW · NO ASTRO DARK · MOON 0%
Transparency
0.58
Seeing
0.84
Cloud
16%
Moon
0%
At this latitude the sun never drops 18° below the horizon tonight, so astronomical darkness never arrives. Scores reflect the deepest twilight available.

Poor tonight

Hour by hour, local to Igra. 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
0
28
50
31
12
3
1
0
0
Low cloud
6%
3%
1%
2%
4%
10%
5%
5%
13%
Mid cloud
75%
9%
9%
20%
77%
99%
100%
100%
100%
High cloud
83%
6%
15%
84%
82%
95%
95%
100%
99%
Transparency
0.56
0.58
0.58
0.53
0.51
0.54
0.25
0.18
0.10
Seeing
0.85
0.84
0.84
0.83
0.82
0.81
0.83
0.81
0.78
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 Clouded out · 0/100
Starting from
100
Cloud
−83
Transparency
−3
Seeing
−1
Moonlight
−0
Darkness
−13
Score
0
CLOUD 88% LOW 6% MID 75% HIGH 83% SUN -5.3° MOON -3.7° / 0% WIND 4 TEMP 17°
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 22:30 · OBSERVE 23:00–00:00 · 1H · MEAN 44

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

2123010305
CLOUD RETURNS 00:00
SET UP 21:30 · OBSERVE 22:00–00:00 · 2H · MEAN 62

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

2123010305
HIGH CLOUD CLEARS 22:00CLOUD RETURNS 00:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 22:30 · OBSERVE 23:00–00:00 · 1H · MEAN 45

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

2123010305
CLOUD RETURNS 00:00
SET UP 22:30 · OBSERVE 23:00–00:00 · 1H · MEAN 37

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

2123010305
CLOUD RETURNS 00:00
SET UP 22:30 · OBSERVE 23:00–00:00 · 1H · MEAN 46

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

2123010305
CLOUD RETURNS 00:00
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The next week of nights

Tonight · 12 Aug
31
Poor
MOON 0%
Tomorrow · 13 Aug
55
Good
MOON 2%
00:00–02:00
Friday · 14 Aug
69
Good
MOON 6%
00:00–02:00
Saturday · 15 Aug
3
Clouded out
MOON 13%
Sunday · 16 Aug
31
Poor
MOON 21%
Monday · 17 Aug
14
Clouded out
MOON 30%
Tuesday · 18 Aug
19
Poor
MOON 39%
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About this forecast

Conditions for Igra, Russia 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 →