Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

New Moon 0%

09:15

15:34

01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 08:14, Set: 15:54, Transit: 12:04. Moon - Rise: 09:15, Set: 15:34. Civil Dark: 16:35 - 07:33. Nautical Dark: 17:19 - 06:48. Astro Dark: 18:01 - 06:06

Total Clouds (% Sky Obscured)

51
61
68
100
100
100
100
100
100
100
97
94
98
100
100
99
100
100
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

51
61
60
61
66
67
56
28
5
6
47
37
42
53
62
73
79
94
93
98
100
100
100
99

Medium Clouds (% Sky Obscured)

51
61
68
95
96
79
97
91
88
100
96
84
62
44
63
75
78
38
61
77
85
90
90
66

High Clouds (% Sky Obscured)

51
44
68
98
100
100
100
100
78
91
46
8
36
68
87
90
94
99
56
62
55
52
51
42

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
1
2
4
12
52
32
5
0
0
0
0
0
0
0
0
0
0
77

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 (%)

7
5
1
26
3
0
0
0
0
4
2
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
4
4
4
4
3
3
2
2
3
2
1
1
2
3
3
4
4
4
5
5
5
5
5

Chance of Frost

Temperature (°C)

7
7
7
8
7
7
7
7
7
7
7
8
8
8
8
7
7
7
7
6
6
6
6
6

Feels Like (°C)

6
5
6
6
6
6
5
5
5
5
6
6
6
6
6
5
4
4
4
4
3
4
4
4

Dew Point (°C)

6
6
7
7
7
6
6
5
4
4
4
4
4
4
3
3
2
3
3
3
3
4
4
5

Relative Humidity (%)

94
94
96
98
98
94
90
85
82
82
79
75
74
74
74
73
74
75
75
79
81
84
87
90

Pressure (mb)

1019
1019
1019
1019
1020
1019
1019
1019
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018

Ozone (du)

314
315
318
318
311
303
299
297
292
285
280
277
275
274
272
269
265
266
267
267
268
269
270
271

Sunday 21

Waxing Crescent 2%

09:55

16:41

01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 08:15, Set: 15:54, Transit: 12:04. Moon - Rise: 09:55, Set: 16:41. Civil Dark: 16:35 - 07:33. Nautical Dark: 17:20 - 06:49. Astro Dark: 18:02 - 06:07

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
98
99
99
98
92
93
96
94
86
89
95
95
98
99
98
98

Low Clouds (% Sky Obscured)

96
94
93
94
95
97
97
97
98
99
99
98
92
91
82
76
77
77
72
83
77
89
96
96

Medium Clouds (% Sky Obscured)

45
51
42
81
73
75
66
71
38
40
34
25
21
3
3
7
7
4
0
0
0
0
0
0

High Clouds (% Sky Obscured)

37
51
43
67
80
81
81
62
64
56
28
26
24
40
50
47
36
37
39
38
34
35
31
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 (%)

85
48
26
12
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)

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

Chance of Frost

Temperature (°C)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
5
5

Feels Like (°C)

4
4
4
4
4
4
3
3
3
3
3
3
3
4
4
3
3
3
3
2
2
2
2
2

Dew Point (°C)

5
6
6
5
5
5
5
5
5
5
4
3
3
3
4
4
5
5
5
5
5
5
5
4

Relative Humidity (%)

91
96
96
96
96
96
96
96
96
91
86
82
79
81
84
88
93
93
93
93
93
94
94
93

Pressure (mb)

1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

270
267
265
264
264
267
268
266
265
265
263
263
265
266
266
266
266
267
268
268
268
268
266
264

Monday 22

Waxing Crescent 6%

10:24

17:57

01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 08:15, Set: 15:55, Transit: 12:05. Moon - Rise: 10:24, Set: 17:57. Civil Dark: 16:36 - 07:34. Nautical Dark: 17:20 - 06:49. Astro Dark: 18:02 - 06:07

Total Clouds (% Sky Obscured)

98
92
97
98
97
83
68
79
81
67
66
68
64
72
68
60
61
62
62
67
69
76
79
79

Low Clouds (% Sky Obscured)

96
92
95
95
95
83
68
79
81
67
66
68
64
72
68
60
61
62
62
67
69
76
79
79

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

37
29
31
37
32
18
4
3
5
10
13
5
16
8
2
3
15
14
13
13
12
12
12
11

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
2
0
0
0
0
0
0
0
2
0
1
1
2
1
1
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)

10
10
10
10
10
10
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

5
5
5
5
5
5
5
5
5
5
5
6
6
6
6
5
5
5
5
4
4
4
4
4

Feels Like (°C)

2
2
2
2
1
2
2
3
3
3
2
3
3
4
4
3
3
3
3
2
2
2
2
1

Dew Point (°C)

4
4
4
4
4
4
4
4
4
3
3
2
2
2
2
3
3
3
3
3
3
3
3
2

Relative Humidity (%)

93
93
93
90
90
91
91
91
93
88
83
79
76
75
78
82
86
88
89
91
91
91
91
91

Pressure (mb)

1016
1016
1016
1016
1015
1015
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1017
1017
1017

Ozone (du)

263
263
265
268
267
268
270
271
274
279
285
288
293
295
297
298
302
307
311
316
321
323
325
329

Tuesday 23

Waxing Crescent 12%

10:45

19:16

01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 08:15, Set: 15:55, Transit: 12:05. Moon - Rise: 10:45, Set: 19:16. Civil Dark: 16:37 - 07:34. Nautical Dark: 17:21 - 06:50. Astro Dark: 18:03 - 06:08

Total Clouds (% Sky Obscured)

83
83
80
76
80
77
76
79
77
76
80
77
77
75
73
80
78
69
73
77
82
92
97
100

Low Clouds (% Sky Obscured)

83
83
80
76
80
77
76
79
77
76
80
77
77
75
73
80
78
69
73
77
82
92
97
100

Medium Clouds (% Sky Obscured)

2
1
0
2
5
7
5
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

10
8
6
6
7
8
6
3
0
0
1
1
1
1
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
0
1
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
9
8
8
9
9
9
9
10
10
10
10
10
10
11
11
11
11
11
11
11
12
12

Chance of Frost

Temperature (°C)

4
3
3
3
3
3
3
3
3
3
3
3
4
4
3
3
3
2
2
1
1
1
1
1

Feels Like (°C)

1
1
1
1
0
0
0
-1
-1
-1
0
0
1
0
0
-1
-1
-1
-2
-2
-3
-3
-5
-5

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
91
91
91
93
91
89
85
80
75
71
69
69
72
73
76
77
80
83
88
86
78

Pressure (mb)

1017
1017
1017
1017
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1020
1020
1021
1021
1022
1022
1023
1023
1024
1024

Ozone (du)

331
332
335
337
338
339
340
340
342
344
348
351
353
357
360
359
358
359
360
359
360
363
370
377

Wednesday 24

Waxing Crescent 19%

11:00

20:36

01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 08:16, Set: 15:56, Transit: 12:06. Moon - Rise: 11:00, Set: 20:36. Civil Dark: 16:37 - 07:34. Nautical Dark: 17:22 - 06:50. Astro Dark: 18:03 - 06:08

Total Clouds (% Sky Obscured)

100
100
99
99
98
97
97
98
98
90
85
81
79
73
67
68
74
80
80
80
80
69
58
53

Low Clouds (% Sky Obscured)

100
100
99
97
95
93
91
72
63
72
77
81
79
73
67
68
74
80
80
80
80
69
58
53

Medium Clouds (% Sky Obscured)

0
0
0
15
30
45
50
50
50
56
53
54
42
35
25
16
16
12
16
15
29
28
27
26

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
1
1
2

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
1
0
2
3
2
6
8
9
11
13
15
32
37
38
34
33
29
26
21
4
5
8
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)

13
12
13
13
11
12
12
12
13
12
13
13
13
13
13
12
12
12
12
12
12
12
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-4
-4
-5
-6
-6
-5
-5
-5
-6
-8
-9
-9
-10
-11
-12
-14
-14
-14
-15
-15
-15
-15
-15
-15

Relative Humidity (%)

73
69
64
61
64
66
71
72
71
62
56
52
48
45
42
38
37
38
37
38
39
40
40
41

Pressure (mb)

1024
1025
1025
1025
1025
1025
1026
1027
1027
1028
1028
1028
1028
1028
1029
1029
1030
1030
1031
1031
1032
1032
1032
1032

Ozone (du)

380
378
379
373
377
385
389
385
381
378
379
377
376
376
376
376
377
377
378
377
376
375
373
371

Thursday 25

Waxing Crescent 28%

11:12

21:55

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

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 - 06:50. Astro Dark: 18:04 - 06:09

Total Clouds (% Sky Obscured)

53
47
47
46
45
45
50
50
46
46
42
42
35
38
31
39
43
42
60
75
86
65
43
25

Low Clouds (% Sky Obscured)

53
47
47
46
42
45
50
50
46
43
38
29
21
15
12
7
5
2
3
11
27
22
19
13

Medium Clouds (% Sky Obscured)

20
11
3
2
4
4
3
4
1
3
5
8
5
3
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
0
1
1
2
1
1
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
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
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
12
12
12
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
10
10
10

Chance of Frost

Temperature (°C)

-4
-5
-5
-6
-6
-6
-6
-6
-5
-5
-5
-4
-3
-3
-3
-3
-3
-4
-4
-4
-4
-5
-5
-5

Feels Like (°C)

-7
-9
-9
-9
-10
-9
-9
-10
-10
-10
-10
-9
-9
-7
-7
-7
-7
-7
-8
-8
-8
-9
-9
-9

Dew Point (°C)

-15
-16
-16
-17
-17
-17
-17
-18
-18
-18
-19
-19
-19
-19
-19
-19
-19
-20
-20
-19
-19
-20
-19
-19

Relative Humidity (%)

41
41
41
41
40
40
40
38
37
35
32
29
26
26
27
27
28
28
28
29
29
30
31
32

Pressure (mb)

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

Ozone (du)

369
367
366
364
363
361
360
356
353
350
349
347
346
347
349
350
352
355
357
357
358
358
357
356

Friday 26

Waxing Crescent 38%

11:23

23:15

Sun - Rise: 08:16, Set: 15:57, 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)

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 Alt-Kölln, Germany (52.51,13.40)

Generated: 20/12/25 01:30:24. Forecast: 20/12/25 to 26/12/25. Timezone: UTC+1.00