Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 2%

10:17

16:48

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: 08:34, Set: 16:02, Transit: 12:18. Moon - Rise: 10:17, Set: 16:48. Civil Dark: 16:45 - 07:51. Nautical Dark: 17:31 - 07:06. Astro Dark: 18:14 - 06:23

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
99
99
97
97
96
94
97
100
100
98
90
85
78
71

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
98
94
94
96
96
99
97
96
88
92
92
92
96
96
90
85
78
71

Medium Clouds (% Sky Obscured)

47
51
68
79
91
87
81
75
71
46
43
45
32
30
38
39
41
37
15
2
3
3
2
2

High Clouds (% Sky Obscured)

100
100
100
96
82
99
99
100
100
89
66
46
31
34
31
36
57
68
71
64
48
34
13
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
4
4
5
5
5
5
5
5
5
5
5
5
5
4
4
4
4
4
4
3
3
3

Relative Humidity (%)

85
86
88
90
88
87
85
87
87
90
91
91
91
93
93
93
93
93
93
93
93
91
91
91

Pressure (mb)

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

Ozone (du)

257
257
258
258
259
259
261
263
264
267
266
265
263
263
264
264
265
265
267
274
279
286
294
297

Monday 22

Waxing Crescent 6%

10:45

18:05

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: 08:35, Set: 16:03, Transit: 12:19. Moon - Rise: 10:45, Set: 18:05. Civil Dark: 16:46 - 07:52. Nautical Dark: 17:31 - 07:06. Astro Dark: 18:14 - 06:24

Total Clouds (% Sky Obscured)

65
76
81
83
81
63
65
72
72
72
72
78
82
82
81
82
77
77
75
72
69
64
70
71

Low Clouds (% Sky Obscured)

65
76
81
80
80
63
65
72
72
72
72
78
82
82
81
82
77
77
75
72
69
64
70
71

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
4
5
14
0
0
6
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

4
10
13
20
26
4
8
4
4
4
4
6
6
5
3
3
3
2
2
2
2
2
2
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
4
0
0
4
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)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
9
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
88
85
82
82
80
80
80
85
85
83
82
80
80
80
80
82
82
81
83
81
83
83

Pressure (mb)

1017
1017
1018
1018
1018
1017
1017
1017
1017
1017
1017
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1021

Ozone (du)

301
302
303
306
306
306
309
311
314
317
320
321
324
326
326
329
334
337
341
341
341
342
343
344

Tuesday 23

Waxing Crescent 12%

11:04

19:26

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

Sun - Rise: 08:35, Set: 16:03, Transit: 12:19. Moon - Rise: 11:04, Set: 19:26. Civil Dark: 16:46 - 07:52. Nautical Dark: 17:32 - 07:06. Astro Dark: 18:15 - 06:24

Total Clouds (% Sky Obscured)

68
71
56
56
45
53
58
43
3
9
25
26
27
14
10
24
25
27
35
43
50
59
63
59

Low Clouds (% Sky Obscured)

68
71
56
56
45
53
58
43
0
0
1
2
1
2
2
17
21
26
35
43
50
58
62
59

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

2
2
1
1
1
1
3
2
2
3
10
4
3
1
1
2
4
5
2
2
2
2
3
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
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)

9
9
9
10
10
10
10
10
10
10
10
10
10
9
9
9
9
9
9
9
9
9
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
83
83
78
74
70
68
68
70
74
77
77
77
80
84
88
91
91
91
91
89
88
88
86

Pressure (mb)

1021
1022
1023
1023
1024
1024
1024
1024
1024
1025
1025
1026
1026
1027
1028
1028
1028
1029
1029
1030
1030
1030
1031
1031

Ozone (du)

346
349
351
354
356
358
358
359
362
361
360
360
363
363
359
356
356
356
355
356
360
363
364
364

Wednesday 24

Waxing Crescent 19%

11:17

20:47

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

Sun - Rise: 08:35, Set: 16:04, Transit: 12:20. Moon - Rise: 11:17, Set: 20:47. Civil Dark: 16:47 - 07:52. Nautical Dark: 17:32 - 07:07. Astro Dark: 18:15 - 06:24

Total Clouds (% Sky Obscured)

58
51
44
50
54
60
58
54
50
41
35
27
19
10
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

53
48
43
50
50
56
46
50
47
41
35
27
19
10
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
3
3
2
4
2
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 (%)

0
1
1
2
2
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-3
-3
-4
-6
-7
-7
-8
-7
-6
-5
-6
-7
-7
-8
-8
-9
-10
-11
-12
-13
-14
-15
-16

Relative Humidity (%)

86
80
78
71
62
56
53
52
56
64
68
66
63
63
62
62
59
56
53
48
45
44
41
38

Pressure (mb)

1032
1032
1033
1034
1034
1034
1034
1035
1035
1035
1035
1036
1036
1036
1037
1037
1037
1037
1037
1038
1038
1038
1037
1037

Ozone (du)

361
355
353
352
352
353
354
355
353
352
352
351
352
352
351
350
348
348
348
347
347
345
343
343

Thursday 25

Waxing Crescent 28%

11:28

22:08

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

Sun - Rise: 08:36, Set: 16:05, Transit: 12:20. Moon - Rise: 11:28, Set: 22:08. Civil Dark: 16:47 - 07:53. Nautical Dark: 17:33 - 07:07. Astro Dark: 18:16 - 06:25

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
2
4
7
9

Low 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

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
1
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
4
7
9

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-7
-7
-7
-6
-6
-5
-4
-5
-6
-6
-7
-7
-7
-7
-7
-7
-7
-7
-8
-8
-8
-8
-8

Dew Point (°C)

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

Relative Humidity (%)

37
35
35
32
29
26
25
26
27
29
31
32
32
32
31
31
31
30
30
30
30
30
29
28

Pressure (mb)

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

Ozone (du)

342
340
337
335
335
335
333
330
326
323
327
332
332
331
330
329
326
323
319
318
316
315
314
314

Friday 26

Waxing Crescent 38%

11:38

23:29

07 Good
08 Good
09 Good
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 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK

Sun - Rise: 08:36, Set: 16:05, Transit: 12:21. Moon - Rise: 11:38, Set: 23:29. Civil Dark: 16:48 - 07:53. Nautical Dark: 17:34 - 07:07. Astro Dark: 18:17 - 06:25

Total Clouds (% Sky Obscured)

11
15
18
32
45
59
67
76
85
87
88
90
81
67
59
51
46
41
38
38
33
36
36
33

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
3
3
4
6
5
7
9
10
12

Medium Clouds (% Sky Obscured)

2
1
0
4
9
13
25
41
55
47
36
26
29
32
28
19
11
4
4
3
3
2
1
0

High Clouds (% Sky Obscured)

11
15
18
32
45
54
51
41
30
18
10
9
7
5
3
3
3
2
1
1
0
1
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
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
5
5
4
4
4
4
4
4
4
4
4
3
3
3
3
3
2
2
3
3
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-21
-21
-21
-21
-21
-21
-21
-21
-21
-20
-20
-20
-20
-19
-18
-17
-14
-11
-8
-6
-4
-3
-2
-2

Relative Humidity (%)

28
27
26
25
23
22
20
21
22
24
24
24
24
26
30
32
41
53
67
75
83
91
92
92

Pressure (mb)

1033
1033
1034
1034
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034

Ozone (du)

314
315
315
316
316
316
316
316
316
316
316
316
316
317
317
318
317
317
316
315
314
313
312
311

Saturday 27

First Quarter 49%

11:47

00:52

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

Sun - Rise: 08:36, Set: 16:06, Transit: 12:21. Moon - Rise: 11:47, Set: 00:52. Civil Dark: 16:49 - 07:53. Nautical Dark: 17:35 - 07:08. Astro Dark: 18:17 - 06:25

Total Clouds (% Sky Obscured)

32
31
31
35
30
23
35
47
58
62
62
66
60
53
46
40
37
35

Low Clouds (% Sky Obscured)

10
9
7
6
5
5
5
4
12
17
28
49
58
53
46
40
37
35

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
1
1
1
1
2
2
2
2
2
2
2
3
4
5

ISS Passover

Visibility (miles)

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

Precipitation Type

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

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
92
94
93
89
88
89
91
94
92
94
94
92
92
91
92
91

Pressure (mb)

1035
1035
1035
1035
1035
1034
1034
1034
1034
1034
1034
1034
1035
1035
1035
1035
1036
1036

Ozone (du)

311
310
309
308
307
306
305
306
307
307
306
306
305
305
304
304
303
301

Forecast for Altona-Altstadt, Germany (53.55,9.95)

Generated: 21/12/25 07:25:20. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+1.00