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Coimbatore

11.006° N   76.966° E  ·  425 M
26 /100
PEAK
Nothing usable opens up tonight.
NO USABLE WINDOW · ASTRO DARK 21:30–05:30 · MOON 0%
Transparency
0.24
Seeing
0.43
Cloud
89%
Moon
0%

Poor tonight

Hour by hour, local to Coimbatore. 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
22
26
20
11
23
14
3
5
2
0
Low cloud
18%
14%
27%
59%
13%
38%
87%
75%
77%
90%
Mid cloud
2%
1%
0%
0%
0%
0%
0%
1%
1%
1%
High cloud
97%
87%
96%
100%
99%
99%
99%
100%
100%
100%
Transparency
0.24
0.23
0.22
0.21
0.24
0.23
0.21
0.20
0.21
0.21
Seeing
0.30
0.31
0.33
0.31
0.33
0.32
0.30
0.33
0.43
0.47
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 Poor · 22/100
Starting from
100
Cloud
−62
Transparency
−11
Seeing
−5
Moonlight
−0
Darkness
−0
Score
22
CLOUD 98% LOW 18% MID 2% HIGH 97% SUN -38.9° MOON -37.8° / 0% WIND 9 TEMP 24°
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.

2123010305
CLOUD NEVER DROPS BELOW 89%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 89%
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 89%
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 89%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2123010305
CLOUD NEVER DROPS BELOW 89%
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The next week of nights

Tonight · 12 Aug
26
Poor
MOON 0%
Tomorrow · 13 Aug
35
Fair
MOON 2%
21:30–22:30
Friday · 14 Aug
22
Poor
MOON 6%
Saturday · 15 Aug
16
Poor
MOON 13%
Sunday · 16 Aug
47
Fair
MOON 21%
23:30–00:30
Monday · 17 Aug
31
Poor
MOON 30%
Tuesday · 18 Aug
1
Clouded out
MOON 39%
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Nearby locations

About this forecast

Conditions for Coimbatore, 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 →