Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 11%

04:42

15:25

05 OK
06 OK
07 Good
08 OK
09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 Bad
19 Bad
20 OK
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK

Sun - Rise: 06:03, Set: 18:06, Transit: 12:05. Moon - Rise: 04:42, Set: 15:25. Civil Dark: 18:29 - 05:41. Nautical Dark: 18:54 - 05:15. Astro Dark: 19:20 - 04:48

Total Clouds (% Sky Obscured)

27
15
2
15
38
40
57
81
80
68
53
60
31
60
52
37
26
29
43
30
40
35
35
35

Low Clouds (% Sky Obscured)

27
15
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0

High Clouds (% Sky Obscured)

0
0
0
15
33
35
53
76
75
64
49
47
29
55
43
34
26
23
34
19
20
20
20
20

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
9
11
9
8
7
5
3
4
4
5
6
5
5
6
11
11
11
9
7
6
5
5

Chance of Frost

Temperature (°C)

14
14
14
16
19
22
24
26
28
29
29
28
27
25
23
22
22
22
19
18
17
17
17
17

Feels Like (°C)

13
13
13
15
19
22
24
26
29
29
29
27
26
25
22
20
20
19
17
16
16
15
15
16

Dew Point (°C)

12
12
11
9
7
7
5
3
2
1
1
-1
-2
1
2
3
12
13
12
12
11
12
13
12

Relative Humidity (%)

89
89
82
61
44
37
29
22
19
16
15
14
14
20
25
29
54
58
63
65
69
73
77
73

Pressure (mb)

1017
1018
1019
1019
1019
1018
1017
1016
1015
1013
1013
1012
1012
1013
1014
1015
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

269
269
270
271
272
274
274
275
277
275
274
275
275
274
275
275
275
276
278
277
278
278
278
278

Friday 19

Waning Crescent 5%

No Rise

16:21

05 OK
06 Bad
07 Bad
08 Bad
09 OK
10 OK
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:02, Set: 18:07, Transit: 12:04. Moon - Rise: No Rise, Set: 16:21. Civil Dark: 18:29 - 05:40. Nautical Dark: 18:55 - 05:14. Astro Dark: 19:21 - 04:47

Total Clouds (% Sky Obscured)

25
54
58
51
38
34
17
48
39
60
76
52
55
69
65
59
63
53
64
71
55
75
91
85

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
0
2
24
2
0
0
0
3
1
0
3
2
1

Medium Clouds (% Sky Obscured)

6
21
21
21
18
18
9
34
31
60
76
50
55
69
65
45
63
53
64
71
48
75
91
65

High Clouds (% Sky Obscured)

20
20
30
40
20
11
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
7
11
16
5
16
5
2
1
1
0
1
2
0
0
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
5
8
10
11
12
11
10
8
7
7
8
6
2
3
5
7
7
6
4
4
3
4
3

Chance of Frost

Temperature (°C)

16
16
16
20
24
27
29
31
32
32
33
32
31
28
26
26
24
24
23
22
21
22
20
21

Feels Like (°C)

15
14
14
17
21
24
27
31
32
32
31
29
29
27
25
24
24
22
22
21
21
23
20
20

Dew Point (°C)

10
10
9
10
11
10
9
8
6
4
4
4
4
8
9
8
8
7
7
7
9
11
9
10

Relative Humidity (%)

68
68
62
53
43
34
28
23
19
17
16
17
17
28
33
32
36
34
36
39
44
51
47
49

Pressure (mb)

1016
1017
1017
1017
1017
1017
1016
1015
1013
1012
1011
1011
1011
1012
1013
1014
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

279
279
280
281
282
282
283
282
281
280
281
279
278
277
275
274
273
273
272
271
272
271
271
271

Saturday 20

Waning Crescent 2%

05:16

17:14

05 Bad
06 Bad
07 Bad
08 OK
09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 OK
20 Bad
21 OK
22 OK
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 OK

Sun - Rise: 06:01, Set: 18:07, Transit: 12:04. Moon - Rise: 05:16, Set: 17:14. Civil Dark: 18:29 - 05:39. Nautical Dark: 18:55 - 05:13. Astro Dark: 19:21 - 04:46

Total Clouds (% Sky Obscured)

55
69
66
45
36
31
45
30
38
44
60
61
76
74
41
64
43
33
36
37
77
75
50
33

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

43
66
66
38
30
25
38
21
32
42
58
47
76
74
38
33
29
29
36
37
54
75
26
26

High Clouds (% Sky Obscured)

4
18
2
0
0
1
0
1
3
0
0
0
0
3
2
20
6
1
3
3
22
25
10
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
13
14
1
0
0
0
0
1
1
5
0
1
2
0
0
1
1
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

3
5
6
6
10
10
11
11
9
9
8
7
7
4
5
4
4
5
6
6
6
5
6
5

Chance of Frost

Temperature (°C)

21
21
21
23
25
27
29
30
31
31
32
31
31
29
26
26
25
24
24
24
24
24
23
24

Feels Like (°C)

21
21
21
22
23
26
28
29
31
30
31
29
29
27
24
26
23
23
23
22
22
22
22
24

Dew Point (°C)

11
12
11
10
8
8
7
7
6
4
3
2
3
5
6
6
5
5
6
6
7
8
7
11

Relative Humidity (%)

51
55
50
42
34
29
24
22
19
17
16
15
16
22
26
27
27
28
31
31
34
36
35
42

Pressure (mb)

1014
1015
1016
1016
1016
1015
1014
1013
1012
1010
1009
1008
1008
1009
1010
1010
1011
1011
1011
1011
1010
1010
1009
1009

Ozone (du)

271
272
273
273
274
273
273
274
273
272
272
272
271
271
273
273
273
273
274
273
274
274
275
276

Sunday 21

New Moon 0%

05:48

18:05

05 OK
06 OK
07 Bad
08 Bad
09 OK
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 Good
20 Good
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:00, Set: 18:07, Transit: 12:04. Moon - Rise: 05:48, Set: 18:05. Civil Dark: 18:29 - 05:38. Nautical Dark: 18:55 - 05:12. Astro Dark: 19:21 - 04:45

Total Clouds (% Sky Obscured)

29
25
56
63
42
79
84
91
95
99
98
96
96
26
16
8
56
57
75
83
86
99
99
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
3
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

20
20
21
27
37
78
82
82
84
33
70
64
50
14
8
1
43
20
73
83
60
99
53
50

High Clouds (% Sky Obscured)

2
0
30
33
3
26
30
37
74
93
89
86
85
26
16
8
4
45
1
11
76
91
93
97

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
1
4
9
17
16
16
13
5
2
2
0
0
0
0
0
0
1
8
25

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
8
11
13
14
14
14
13
12
15
13
5
4
4
4
4
7
7
6
7
6
7
7

Chance of Frost

Temperature (°C)

23
23
25
26
28
30
32
33
33
33
33
32
30
29
27
26
25
25
25
25
24
25
25
25

Feels Like (°C)

23
23
24
23
25
26
27
29
30
30
28
28
29
28
28
27
26
22
22
23
20
22
21
22

Dew Point (°C)

11
11
11
8
8
6
7
6
8
8
5
9
10
10
11
10
9
8
6
7
5
8
6
7

Relative Humidity (%)

45
47
42
31
27
22
20
18
21
21
18
23
28
32
35
36
35
32
29
31
28
32
29
32

Pressure (mb)

1010
1010
1010
1010
1010
1009
1009
1008
1007
1006
1004
1005
1005
1005
1005
1006
1006
1006
1005
1005
1005
1005
1005
1006

Ozone (du)

276
274
275
275
276
276
276
274
273
272
271
269
269
269
268
269
269
268
267
267
267
268
267
268

Monday 22

Waxing Crescent 1%

06:19

18:56

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 05:59, Set: 18:07, Transit: 12:03. Moon - Rise: 06:19, Set: 18:56. Civil Dark: 18:30 - 05:37. Nautical Dark: 18:56 - 05:11. Astro Dark: 19:22 - 04:44

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
100
100
100
87
79
90
100
100
100
100
99
99
98
97
96
98
100
97

Low Clouds (% Sky Obscured)

0
8
17
22
28
36
43
71
32
31
40
62
78
69
61
44
48
56
62
64
67
71
77
81

Medium Clouds (% Sky Obscured)

42
58
46
76
79
54
59
99
99
52
75
86
96
87
78
71
69
66
64
44
24
4
3
2

High Clouds (% Sky Obscured)

100
100
97
100
100
100
100
100
100
75
78
89
100
100
100
100
99
99
98
95
95
98
95
81

ISS Passover

Visibility (miles)

9
9
7
7
9
9
9
8
9
9
1
4
6
9
9
8
7
7
6
6
7
8
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

18
37
41
45
53
73
95
95
95
95
95
95
95
95
84
39
45
42
47
50
48
53
47
42

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.6
0.8
0.7
4
4
3.3
3.6
0.5
0.4
0
0
0
0
0
0
0.3
0.2
0.2

Wind Speed/Direction (mph)

6
8
10
11
12
12
12
11
9
11
16
12
10
7
7
7
8
7
6
6
5
4
3
3

Chance of Frost

Temperature (°C)

25
24
24
25
26
23
22
23
22
21
25
24
23
21
21
20
20
20
19
19
19
19
18
18

Feels Like (°C)

23
22
21
22
22
20
18
19
20
17
22
21
21
19
19
19
18
19
19
20
20
20
19
19

Dew Point (°C)

11
10
9
7
7
4
1
1
5
1
21
21
20
19
19
19
18
19
18
18
18
18
17
17

Relative Humidity (%)

42
41
36
31
31
28
25
24
33
26
78
83
85
88
91
92
92
93
93
93
93
92
92
92

Pressure (mb)

1007
1007
1008
1009
1009
1009
1009
1009
1009
1007
1008
1009
1010
1012
1012
1013
1014
1014
1014
1015
1015
1014
1014
1015

Ozone (du)

268
266
266
266
265
265
266
266
266
267
266
265
265
264
264
264
264
264
264
264
264
264
264
265

Tuesday 23

Waxing Crescent 3%

06:49

19:47

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 Good
18 OK
19 OK
20 Bad
21 Bad
22 OK
23 OK
00 OK
01 OK
02 Good
03 OK
04 OK

Sun - Rise: 05:58, Set: 18:08, Transit: 12:03. Moon - Rise: 06:49, Set: 19:47. Civil Dark: 18:30 - 05:36. Nautical Dark: 18:56 - 05:10. Astro Dark: 19:22 - 04:43

Total Clouds (% Sky Obscured)

94
95
95
94
83
72
59
56
54
52
46
34
17
25
34
65
59
41
22
19
14
9
16
20

Low Clouds (% Sky Obscured)

86
88
87
86
83
72
59
56
54
52
46
31
8
9
8
7
6
3
2
2
2
2
5
7

Medium Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

68
70
72
75
57
36
19
13
8
2
4
5
6
18
33
55
41
21
2
4
4
4
5
6

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

35
28
24
15
14
11
7
6
5
8
5
1
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
7
7
8
9
8
7
6
6
7
7
7
8
8
9
10
12
13
14
15
16
16
17
16

Chance of Frost

Temperature (°C)

18
17
17
18
18
19
21
23
23
23
24
23
22
21
20
18
18
17
15
14
14
14
13
13

Feels Like (°C)

19
19
19
20
20
20
19
19
20
21
21
24
23
22
22
21
21
16
15
14
14
15
14
10

Dew Point (°C)

16
15
16
16
16
15
15
15
14
13
13
12
11
10
10
10
10
10
10
10
10
10
9
8

Relative Humidity (%)

92
92
90
88
88
77
68
61
57
53
50
50
51
51
54
56
59
64
70
75
75
75
75
72

Pressure (mb)

1015
1016
1017
1017
1018
1018
1018
1018
1017
1017
1016
1017
1017
1018
1018
1019
1020
1020
1020
1021
1021
1020
1020
1021

Ozone (du)

265
266
267
269
271
271
271
272
271
271
270
270
270
270
270
270
271
271
270
270
269
268
267
267

Wednesday 24

Waxing Crescent 8%

07:22

20:38

Sun - Rise: 05:57, Set: 18:08, Transit: 12:03. Moon - Rise: 07:22, Set: 20:38. Civil Dark: 18:30 - 05:35. Nautical Dark: 18:56 - 05:09. Astro Dark: 19:22 - 04:42

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for São Carlos, São Carlos, Brazil (-22.01,-47.89)

Generated: 18/09/25 05:02:27. Forecast: 18/09/25 to 24/09/25. Timezone: UTC-3.00