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Ārvi

20.996° N   78.229° E  ·  307 M
35 /100
PEAK
Marginal, but there is a 1 hour gap from 22:30.
BEST WINDOW 22:30–23:30 · ASTRO DARK 22:30–05:30 · MOON 0%
Transparency
0.40
Seeing
0.93
Cloud
19%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
22
23
00
01
02
03
04
05
06
35
28
26
21
21
35
19
2
0
BEST WINDOW
Low cloud
7%
9%
8%
13%
16%
6%
0%
2%
4%
Mid cloud
2%
11%
20%
27%
24%
26%
69%
11%
11%
High cloud
85%
95%
94%
99%
97%
53%
53%
8%
7%
Transparency
0.40
0.36
0.34
0.30
0.26
0.26
0.27
0.29
0.33
Seeing
0.83
0.89
0.90
0.93
0.93
0.90
0.89
0.87
0.84
Moon clear
down
down
down
down
down
down
down
down
0%
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
22 Fair · 35/100
Starting from
100
Cloud
−51
Transparency
−12
Seeing
−2
Moonlight
−0
Darkness
−0
Score
35
CLOUD 87% LOW 7% MID 2% HIGH 85% SUN -44.7° MOON -43.2° / 0% WIND 4 TEMP 26°
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.

NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 03:00 · OBSERVE 03:30–04:30 · 1H · MEAN 40

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

2200020406
HIGH CLOUD CLEARS 03:30CLOUD RETURNS 04:30MOONLIGHT 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.

2200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
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The next week of nights

Tonight · 12 Aug
35
Fair
MOON 0%
22:30–23:30
Tomorrow · 13 Aug
29
Poor
MOON 2%
Friday · 14 Aug
24
Poor
MOON 6%
Saturday · 15 Aug
13
Clouded out
MOON 13%
Sunday · 16 Aug
3
Clouded out
MOON 21%
Monday · 17 Aug
3
Clouded out
MOON 30%
Tuesday · 18 Aug
30
Poor
MOON 39%
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About this forecast

Conditions for Ārvi, India 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 →