Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 25

Waxing Crescent 28%

11:12

21:55

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

Sun - Rise: 08:16, Set: 15:57, Transit: 12:06. Moon - Rise: 11:12, Set: 21:55. Civil Dark: 16:38 - 07:35. Nautical Dark: 17:22 - 06:51. Astro Dark: 18:04 - 06:09

Total Clouds (% Sky Obscured)

18
25
31
32
3
0
0
0
6
39
17
33
6
17
10
52
19
29
55
60
63
85
99
100

Low Clouds (% Sky Obscured)

18
25
31
29
3
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
3
0
7
25
59
64
86

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
4
26
17
33
6
16
6
46
16
22
50
54
60
84
98
100

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)

8
8
8
8
9
9
8
9
8
9
8
7
7
6
6
6
5
5
5
4
4
3
3
3

Chance of Frost

Temperature (°C)

-9
-9
-9
-8
-6
-6
-5
-5
-5
-5
-6
-6
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7
-7

Feels Like (°C)

-13
-13
-13
-12
-10
-10
-9
-9
-9
-9
-10
-10
-11
-10
-11
-11
-12
-11
-11
-12
-11
-11
-11
-11

Dew Point (°C)

-22
-22
-23
-23
-23
-24
-24
-23
-23
-22
-22
-22
-22
-22
-22
-23
-23
-23
-24
-24
-24
-25
-25
-26

Relative Humidity (%)

32
32
30
29
25
22
21
21
22
24
26
27
27
27
27
27
26
26
25
25
24
22
21
20

Pressure (mb)

1038
1038
1038
1038
1038
1037
1037
1037
1036
1036
1036
1036
1036
1036
1036
1036
1036
1035
1035
1035
1035
1034
1034
1034

Ozone (du)

358
353
349
344
343
340
336
332
325
318
314
311
309
303
300
298
296
298
298
297
297
295
294
293

Friday 26

Waxing Crescent 38%

11:23

23:15

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

Sun - Rise: 08:16, Set: 15:58, Transit: 12:07. Moon - Rise: 11:23, Set: 23:15. Civil Dark: 16:39 - 07:35. Nautical Dark: 17:23 - 06:51. Astro Dark: 18:05 - 06:09

Total Clouds (% Sky Obscured)

87
71
80
57
25
28
19
12
5
5
54
65
72
67
56
55
64
72
83
97
100
100
100
97

Low Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
4
54
65
72
67
56
55
64
72
83
97
100
100
100
97

Medium Clouds (% Sky Obscured)

54
23
36
22
24
25
19
9
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

75
58
59
39
3
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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
2
2

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)

3
3
3
3
3
3
4
4
4
4
4
4
4
4
3
3
3
3
2
2
3
4
5
5

Chance of Frost

Temperature (°C)

-7
-7
-7
-6
-5
-4
-3
-2
-2
-3
-3
-3
-3
-2
-2
-2
-2
-1
-1
-1
-1
-1
-1
-1

Feels Like (°C)

-11
-11
-11
-10
-9
-6
-5
-4
-4
-4
-4
-4
-4
-4
-3
-3
-3
-3
-3
-3
-3
-4
-4
-4

Dew Point (°C)

-26
-26
-26
-26
-25
-23
-20
-17
-15
-12
-10
-8
-5
-4
-3
-3
-2
-2
-2
-2
-1
-1
-1
-1

Relative Humidity (%)

19
19
19
19
19
21
25
30
36
47
58
69
81
89
92
94
96
96
96
96
98
96
98
98

Pressure (mb)

1034
1034
1034
1034
1034
1034
1033
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1033
1033
1033
1032
1032

Ozone (du)

291
289
286
286
287
287
285
285
284
281
280
281
282
280
280
280
280
280
280
281
282
281
281
281

Saturday 27

First Quarter 49%

11:33

00:37

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 OK
20 OK
21 OK
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 08:16, Set: 15:58, Transit: 12:07. Moon - Rise: 11:33, Set: 00:37. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:24 - 06:51. Astro Dark: 18:05 - 06:09

Total Clouds (% Sky Obscured)

90
93
90
85
77
66
49
89
100
100
100
49
31
34
27
18
0
2
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

90
93
90
85
77
66
49
89
100
100
100
49
31
34
27
18
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
0
0
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
8
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
15
23
4
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
6
7
8
9
10
12
13
13
11
10
9
9
8
8
8
8
8
7
8
8
7
7
8

Chance of Frost

Temperature (°C)

-1
-1
-1
-0
0
0
1
1
1
2
2
2
2
2
1
1
1
0
0
-0
-1
-1
-1
-2

Feels Like (°C)

-3
-3
-4
-4
-4
-3
-3
-3
-4
-3
-3
-3
-1
-1
-1
-2
-2
-2
-3
-3
-4
-4
-4
-5

Dew Point (°C)

-1
-1
-1
-1
-2
-2
-2
-1
-0
-0
-1
-1
0
1
0
-1
-2
-3
-5
-6
-7
-7
-7
-8

Relative Humidity (%)

98
100
98
94
89
84
81
86
89
88
83
84
89
93
93
84
83
77
69
63
65
64
63
63

Pressure (mb)

1032
1031
1031
1030
1029
1027
1027
1026
1025
1025
1026
1026
1027
1027
1028
1029
1029
1030
1030
1030
1031
1031
1031
1031

Ozone (du)

280
279
278
278
279
279
280
282
285
285
283
287
288
289
292
294
294
295
293
296
298
295
294
294

Sunday 28

Waxing Gibbous 61%

11:44

02:02

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

Sun - Rise: 08:16, Set: 15:59, Transit: 12:08. Moon - Rise: 11:44, Set: 02:02. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:25 - 06:51. Astro Dark: 18:06 - 06:09

Total Clouds (% Sky Obscured)

0
0
0
0
0
1
2
0
1
3
0
0
19
56
74
78
92
100
97
94
91
88
85
82

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
0
0
19
52
74
78
92
100
97
94
91
88
85
82

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
3
3
2

High Clouds (% Sky Obscured)

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

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
1
1
20

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)

7
7
6
6
7
7
7
6
7
7
8
10
11
13
13
13
13
14
15
14
15
16
16
17

Chance of Frost

Temperature (°C)

-2
-2
-1
-1
-0
0
1
1
1
0
0
-0
0
0
0
0
0
1
2
2
2
3
3
3

Feels Like (°C)

-4
-4
-4
-4
-3
-3
-2
-1
-2
-2
-3
-4
-5
-5
-6
-6
-5
-6
-5
-4
-4
-4
-4
-4

Dew Point (°C)

-7
-7
-7
-7
-7
-7
-6
-5
-3
-3
-4
-6
-7
-9
-8
-6
-3
-2
-1
-1
-1
-0
-1
-1

Relative Humidity (%)

66
64
64
63
61
59
61
66
75
80
75
67
58
52
54
64
78
86
81
81
81
82
77
74

Pressure (mb)

1031
1032
1032
1032
1032
1031
1031
1030
1030
1029
1028
1027
1026
1025
1024
1023
1022
1021
1020
1020
1019
1019
1018
1018

Ozone (du)

294
292
291
291
290
288
286
285
281
278
277
278
280
281
282
282
282
281
283
283
284
284
285
285

Monday 29

Waxing Gibbous 72%

11:58

03:32

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
05 Bad
06 Bad

Sun - Rise: 08:16, Set: 16:00, Transit: 12:08. Moon - Rise: 11:58, Set: 03:32. Civil Dark: 16:41 - 07:35. Nautical Dark: 17:25 - 06:51. Astro Dark: 18:07 - 06:10

Total Clouds (% Sky Obscured)

81
82
81
86
90
95
93
92
90
94
97
100
51
62
63
65
63
65
76
90
100
92
88
82

Low Clouds (% Sky Obscured)

81
82
81
86
90
93
91
87
82
85
89
93
27
29
31
28
30
32
37
48
60
68
65
58

Medium Clouds (% Sky Obscured)

0
0
0
4
8
14
20
27
35
45
48
55
0
0
0
0
0
0
3
3
5
5
5
10

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
6
6
6
5
4
2
0
3
6

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 (%)

23
26
24
21
18
7
6
10
20
23
29
35
16
18
19
17
15
7
22
28
33
29
24
15

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)

14
14
14
13
13
14
14
15
14
14
13
12
11
11
11
11
11
11
12
12
13
15
14
12

Chance of Frost

Temperature (°C)

3
3
3
3
3
4
4
4
4
4
4
4
4
2
2
2
1
1
1
1
0
0
-0
-1

Feels Like (°C)

-3
-3
-3
-3
-2
-2
-2
-2
-1
-1
-1
-2
-2
-2
-3
-3
-3
-2
-3
-4
-4
-4
-5
-4

Dew Point (°C)

-1
-0
-0
-0
1
0
0
-0
-0
-1
-2
-2
-1
-2
-1
0
0
-1
-1
-1
-1
-1
-3
-4

Relative Humidity (%)

79
80
80
79
82
79
75
73
72
68
64
68
71
76
83
91
91
89
89
89
91
91
83
75

Pressure (mb)

1018
1018
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

284
284
285
286
286
290
289
290
291
290
290
290
284
287
290
292
300
308
316
322
328
335
336
338

Tuesday 30

Waxing Gibbous 82%

12:16

05:06

07 Bad
08 Bad
09 OK
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 OK
04 Bad
05 Bad
06 Bad

Sun - Rise: 08:16, Set: 16:01, Transit: 12:09. Moon - Rise: 12:16, Set: 05:06. Civil Dark: 16:42 - 07:35. Nautical Dark: 17:26 - 06:51. Astro Dark: 18:08 - 06:10

Total Clouds (% Sky Obscured)

68
50
30
36
43
49
49
48
44
51
63
82
87
89
86
83
73
72
54
44
34
45
56
63

Low Clouds (% Sky Obscured)

49
39
30
36
43
49
49
47
42
51
63
80
78
68
53
53
57
61
49
41
33
42
52
57

Medium Clouds (% Sky Obscured)

7
5
0
0
1
1
2
3
4
5
5
5
33
61
79
69
70
60
37
17
0
13
27
31

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
7
6
4
6
7
9
9
9
9
7
5
3
2
1
0
3
6
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
11
8
16
19
21
18
13
3
18
24
28
33
37
40
44
42
36
29
22
14
19
19
21

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.1
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
10
10
10
11
11
12
14
14
14
15
14
13
11
10
10
10
10
10
10
11
11
11

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-0
1
1
1
1
1
1
1
1
1
1
0
0
-1
-1
-1
-1
-2
-2
-2

Feels Like (°C)

-5
-6
-6
-5
-6
-5
-5
-4
-4
-4
-4
-4
-4
-5
-5
-5
-6
-5
-6
-6
-5
-6
-6
-6

Dew Point (°C)

-6
-5
-5
-4
-4
-5
-5
-5
-5
-5
-5
-4
-3
-2
-2
-1
-1
-2
-3
-3
-3
-4
-5
-6

Relative Humidity (%)

68
72
74
78
74
69
64
64
64
63
66
70
74
80
86
92
91
89
87
86
86
84
79
75

Pressure (mb)

1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017

Ozone (du)

339
344
349
354
353
352
351
351
352
352
356
360
364
362
360
357
352
346
340
341
341
341
339
336

Wednesday 31

Waxing Gibbous 90%

12:42

06:38

07 Bad
08 Bad
09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:16, Set: 16:02, Transit: 12:09. Moon - Rise: 12:42, Set: 06:38. Civil Dark: 16:43 - 07:35. Nautical Dark: 17:27 - 06:51. Astro Dark: 18:09 - 06:10

Total Clouds (% Sky Obscured)

49
36
23
42
61
81
72
63
51
41
32
29
50
71
92
95
97
100

Low Clouds (% Sky Obscured)

47
36
23
19
9
0
0
0
0
3
8
10
14
15
18
28
41
42

Medium Clouds (% Sky Obscured)

20
12
7
32
58
81
68
60
51
34
18
1
29
59
85
90
95
100

High Clouds (% Sky Obscured)

0
0
0
30
60
81
60
30
0
1
1
2
13
23
34
51
69
86

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6

Fog (%)

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

Precipitation Probability (%)

16
11
0
0
0
0
0
0
0
0
0
0
17
21
18
29
32
33

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-1
-1
0
-0
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2

Feels Like (°C)

-6
-7
-7
-7
-7
-7
-7
-4
-4
-5
-4
-5
-5
-6
-6
-5
-5
-5

Dew Point (°C)

-6
-7
-7
-8
-8
-8
-9
-8
-8
-7
-7
-7
-8
-7
-6
-5
-4
-3

Relative Humidity (%)

71
69
67
64
60
56
51
55
57
62
63
64
65
71
75
81
84
87

Pressure (mb)

1017
1017
1018
1018
1018
1018
1017
1017
1017
1017
1016
1016
1015
1014
1014
1013
1012
1011

Ozone (du)

333
332
331
331
333
335
337
338
340
342
347
353
358
374
390
406
409
411

Forecast for Tempelhof, Germany (52.47,13.39)

Generated: 25/12/25 07:48:57. Forecast: 25/12/25 to 31/12/25. Timezone: UTC+1.00