HomeLocations › Chattogram

Chattogram

22.338° N   91.832° E  ·  15 M
5 /100
PEAK
Cloud will spoil it. Not a night for the telescope.
NO USABLE WINDOW · ASTRO DARK 22:00–05:00 · MOON 0%
Transparency
0.10
Seeing
0.40
Cloud
98%
Moon
0%

Clouded out tonight

Hour by hour, local to Chattogram. 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
2
5
1
0
0
0
1
0
0
Low cloud
85%
77%
86%
93%
100%
98%
77%
84%
77%
Mid cloud
69%
23%
73%
95%
53%
96%
100%
99%
78%
High cloud
78%
83%
89%
89%
98%
100%
98%
98%
93%
Transparency
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
0.10
Seeing
0.15
0.16
0.30
0.38
0.40
0.38
0.38
0.34
0.21
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 Clouded out · 2/100
Starting from
100
Cloud
−97
Transparency
−1
Seeing
−0
Moonlight
−0
Darkness
−0
Score
2
CLOUD 98% LOW 85% MID 69% HIGH 78% SUN -42.8° MOON -41.4° / 0% WIND 11 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
CLOUD NEVER DROPS BELOW 98%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CLOUD NEVER DROPS BELOW 98%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CLOUD NEVER DROPS BELOW 98%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CLOUD NEVER DROPS BELOW 98%
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

2200020406
CLOUD NEVER DROPS BELOW 98%
Advertisement
Reserved

The next week of nights

Tonight · 12 Aug
5
Clouded out
MOON 0%
Tomorrow · 13 Aug
44
Fair
MOON 2%
20:00–00:00
Friday · 14 Aug
41
Fair
MOON 6%
20:00–00:00
Saturday · 15 Aug
0
Clouded out
MOON 12%
Sunday · 16 Aug
12
Clouded out
MOON 19%
Monday · 17 Aug
24
Poor
MOON 28%
Tuesday · 18 Aug
16
Poor
MOON 37%
Advertisement
Reserved

Nearby locations

About this forecast

Conditions for Chattogram, Bangladesh 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 →