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Palmeira das Missões

-27.899° S   53.314° W  ·  623 M
46 /100
PEAK
Marginal, but there is a 2 hours gap from 22:00.
BEST WINDOW 22:00–00:00 · ASTRO DARK 20:00–06:00 · MOON 0%
Transparency
0.24
Seeing
1.00
Cloud
37%
Moon
0%

Fair tonight

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

Sky state
Lighter = daylight and twilight  ·  unshaded = astronomical dark
Score
18
19
20
21
22
23
00
01
02
03
04
05
06
07
0
3
39
27
46
40
21
7
4
11
16
6
3
0
BEST WINDOW
Low cloud
16%
20%
2%
1%
2%
1%
1%
2%
1%
4%
0%
7%
1%
0%
Mid cloud
98%
98%
44%
63%
32%
21%
52%
90%
100%
79%
69%
85%
98%
69%
High cloud
1%
3%
9%
13%
6%
49%
76%
84%
80%
71%
66%
99%
100%
98%
Transparency
0.32
0.24
0.21
0.20
0.22
0.21
0.20
0.21
0.22
0.10
0.10
0.10
0.10
0.10
Seeing
1.00
1.00
1.00
1.00
1.00
1.00
1.00
1.00
0.99
0.95
1.00
1.00
1.00
0.95
Moon clear
0%
down
down
down
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
18 Clouded out · 0/100
Starting from
100
Cloud
−90
Transparency
−3
Seeing
−0
Moonlight
−0
Darkness
−7
Score
0
CLOUD 98% LOW 16% MID 98% HIGH 1% SUN 1.3° MOON 4.3° / 0% WIND 1 TEMP 19°
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
When a clear gap is worth driving for

Ask how long the gap is relative to your setup time and your exposure length. A two-hour gap is a real session for a visual observer and close to worthless for someone doing four-minute subs on a target that needs three hours.

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 21:30 · OBSERVE 22:00–00:00 · 2H · MEAN 42

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

18202200020406
CLOUD BREAKS 22:00CLOUD RETURNS 00:00
SET UP 21:30 · OBSERVE 22:00–00:00 · 2H · MEAN 54

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

18202200020406
CLOUD BREAKS 22:00CLOUD RETURNS 00:00MOONLIGHT IGNORED FOR THIS TARGET
SET UP 21:30 · OBSERVE 22:00–23:00 · 1H · MEAN 42

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

18202200020406
CLOUD BREAKS 22:00CLOUD RETURNS 23:00
NO USABLE WINDOW FOR THIS TARGET TONIGHT

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

18202200020406
CONDITIONS STAY BELOW THE USABLE THRESHOLD
SET UP 21:30 · OBSERVE 22:00–00:00 · 2H · MEAN 42

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

18202200020406
CLOUD BREAKS 22:00CLOUD RETURNS 00:00
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The next week of nights

Tonight · 12 Aug
46
Fair
MOON 0%
22:00–00:00
Tomorrow · 13 Aug
20
Poor
MOON 3%
Friday · 14 Aug
66
Good
MOON 7%
23:00–04:00
Saturday · 15 Aug
49
Fair
MOON 15%
03:00–04:00
Sunday · 16 Aug
50
Fair
MOON 23%
03:00–04:00
Monday · 17 Aug
69
Good
MOON 32%
21:00–22:00
Tuesday · 18 Aug
31
Poor
MOON 42%
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Nearby locations

About this forecast

Conditions for Palmeira das Missões, Brazil 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 →