Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 1%

08:21

14:40

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

Sun - Rise: 08:14, Set: 15:53, Transit: 12:03. Moon - Rise: 08:21, Set: 14:40. Civil Dark: 16:34 - 07:32. Nautical Dark: 17:19 - 06:48. Astro Dark: 18:00 - 06:06

Total Clouds (% Sky Obscured)

98
93
56
39
15
14
3
4
1
3
4
3
2
3
2
17
13
6
14
27
45
48
42
51

Low Clouds (% Sky Obscured)

5
14
6
13
14
5
0
4
0
0
0
0
0
0
0
0
0
0
0
0
0
26
42
51

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
10
3
11
23
25
28
33
36

High Clouds (% Sky Obscured)

92
43
56
39
9
14
3
0
1
3
4
3
2
3
2
3
3
2
2
3
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
2
2

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
5
4
3
3
3
2
2
1
1
1
1
1
1
1
1
0
-0
0
1
1
2
2
3

Relative Humidity (%)

81
82
84
85
83
82
80
80
80
80
79
79
79
79
77
77
75
72
68
66
63
62
62
64

Pressure (mb)

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

Ozone (du)

299
295
292
289
287
281
277
276
277
277
275
270
266
261
258
255
255
257
261
267
273
282
286
285

Friday 19

Waning Crescent 0%

09:15

15:34

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 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)

57
56
98
99
98
99
98
98
97
97
97
99
99
99
100
99
97
81
59
59
72
74
83
88

Low Clouds (% Sky Obscured)

57
56
86
97
96
97
92
90
88
89
81
76
75
76
72
59
50
45
40
40
48
51
53
47

Medium Clouds (% Sky Obscured)

26
34
35
75
81
83
90
85
54
50
65
60
68
56
73
88
77
43
32
23
27
23
36
48

High Clouds (% Sky Obscured)

0
8
31
26
54
58
21
56
41
46
56
52
89
91
100
95
85
52
43
15
29
28
30
28

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

Precipitation Probability (%)

2
7
13
20
30
38
54
55
43
30
28
30
26
17
4
1
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
7
7
7
7
6
6
5
5
4
4
4
4
4
3
3
3
2
1
1
1
1
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
73
74
74
74
75
78
85
90
93
93
94
94
93
90
90
90
90
88
84
81
78
78
82

Pressure (mb)

1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1020
1020
1020
1020

Ozone (du)

284
285
290
298
301
306
315
321
319
325
331
331
326
319
310
306
298
291
286
281
278
274
271
270

Saturday 20

New Moon 2%

09:55

No Set

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:15, Set: 15:54, Transit: 12:04. Moon - Rise: 09:55, Set: No Set. Civil Dark: 16:35 - 07:33. Nautical Dark: 17:19 - 06:49. Astro Dark: 18:01 - 06:07

Total Clouds (% Sky Obscured)

95
95
96
94
98
99
100
99
95
78
91
97
99
100
96
83
92
90
94
85
99
98
100
100

Low Clouds (% Sky Obscured)

57
65
71
76
85
90
89
85
86
78
81
92
87
91
91
83
92
90
91
85
90
90
90
90

Medium Clouds (% Sky Obscured)

72
55
43
34
38
35
29
39
24
38
64
86
97
100
77
28
27
58
69
45
48
9
9
8

High Clouds (% Sky Obscured)

33
32
30
37
41
45
94
68
30
39
57
81
80
87
27
21
24
11
8
6
22
23
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
90
90
88
86
83
83
88
91
94
96
94
94
93
93
91
89
85
80
78
75
76
78

Pressure (mb)

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

Ozone (du)

270
270
269
268
268
271
272
273
274
276
274
272
271
271
271
269
266
266
266
266
263
261
261
262

Sunday 21

Waxing Crescent 6%

10:24

16:41

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:15, Set: 15:55, Transit: 12:05. Moon - Rise: 10:24, Set: 16:41. Civil Dark: 16:35 - 07:34. Nautical Dark: 17:20 - 06:49. Astro Dark: 18:02 - 06:07

Total Clouds (% Sky Obscured)

98
97
95
79
75
71
70
74
82
82
79
72
78
82
83
87
94
94
93
90
83
82
90
90

Low Clouds (% Sky Obscured)

75
84
79
78
73
71
70
74
80
78
76
72
65
57
49
53
57
60
58
56
54
55
55
56

Medium Clouds (% Sky Obscured)

18
26
38
24
13
2
2
2
0
0
0
0
0
0
1
16
31
46
47
48
49
41
42
31

High Clouds (% Sky Obscured)

27
38
52
30
22
22
25
25
44
42
29
19
37
54
72
81
90
94
93
90
83
76
61
47

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
83
85
86
89
89
89
89
91
91
91
91
91
91
91
89
91
89
85
80
77
75
75
76

Pressure (mb)

1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1018
1018
1018
1019

Ozone (du)

262
262
265
267
270
271
271
270
270
271
272
273
274
276
280
283
290
294
299
304
308
311
314
317

Monday 22

Waxing Crescent 12%

10:45

17:57

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 08:15, Set: 15:55, Transit: 12:05. Moon - Rise: 10:45, Set: 17:57. Civil Dark: 16:36 - 07:34. Nautical Dark: 17:20 - 06:50. Astro Dark: 18:02 - 06:08

Total Clouds (% Sky Obscured)

91
91
90
93
97
100
99
98
96
98
99
100
96
93
91
90
91
89
92
93
94
93
94
90

Low Clouds (% Sky Obscured)

56
63
62
70
66
65
62
64
61
64
70
76
82
83
84
62
60
58
63
65
68
64
62
63

Medium Clouds (% Sky Obscured)

29
29
26
34
42
50
35
20
5
4
2
0
0
0
0
0
0
0
0
0
0
2
2
4

High Clouds (% Sky Obscured)

33
19
10
39
72
100
70
40
10
10
5
5
5
10
15
15
15
15
10
10
15
15
5
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
8
8
8
8
8
8
8
8
8
8
8
8
8
9
9
9
9
10
10
10
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
88
88
91
91
91
93
93
93
93
91
93
91
93
93
91
91
89
88
83
82
82
83

Pressure (mb)

1019
1019
1019
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1021
1021
1022
1022
1022
1022
1022
1022

Ozone (du)

322
326
328
327
328
333
339
344
350
356
362
366
367
368
369
369
369
369
370
369
369
368
369
370

Tuesday 23

Waxing Crescent 19%

11:00

19:16

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
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 OK
13 OK
14 OK
15 OK

Sun - Rise: 08:16, Set: 15:56, Transit: 12:06. Moon - Rise: 11:00, 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)

92
88
89
84
82
78
80
80
79
81
84
84
87
91
96
96
95
93
69
48
29
28
23
19

Low Clouds (% Sky Obscured)

74
85
89
84
82
78
72
65
57
63
71
78
85
91
96
93
87
82
63
45
26
25
20
16

Medium Clouds (% Sky Obscured)

23
42
57
68
75
75
66
52
39
26
14
2
2
1
0
1
2
7
9
8
8
7
5
2

High Clouds (% Sky Obscured)

0
0
0
0
0
5
10
15
15
12
6
6
4
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
1
2
1
1
1
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)

12
12
13
13
13
13
13
13
13
13
14
14
14
14
14
14
13
13
13
13
13
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-2
-2
-2
-4
-4
-4
-4
-4
-4
-5
-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-4
-5

Dew Point (°C)

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

Relative Humidity (%)

85
83
80
78
77
77
77
78
78
78
78
77
75
73
70
66
68
68
70
67
65
61
62
62

Pressure (mb)

1022
1023
1023
1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1027
1027
1027
1028
1028
1029
1028
1028
1028
1028
1029

Ozone (du)

370
370
371
371
371
371
370
371
372
373
377
381
385
386
386
387
386
386
385
384
384
383
383
383

Wednesday 24

Waxing Crescent 18%

11:12

20:36

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

Sun - Rise: 08:16, Set: 15:57, Transit: 12:06. Moon - Rise: 11:12, Set: 20:36. Civil Dark: 16:37 - 07:35. Nautical Dark: 17:22 - 06:50. Astro Dark: 18:03 - 06:09

Total Clouds (% Sky Obscured)

24
30
40
42
43
47
44
39
34
41
48
51
48
44
48
51
53
55
56
56
61

Low Clouds (% Sky Obscured)

22
26
36
34
33
29
26
23
20
21
20
19
19
22
18
18
14
14
17
25
21

Medium Clouds (% Sky Obscured)

2
1
0
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
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

Fog (%)

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

Precipitation Probability (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
63
67
68
68
67
68
67
64
64
63
63
61
61
61
61
60
59
58
57
54

Pressure (mb)

1029
1029
1029
1030
1030
1030
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1033
1033
1033
1033

Ozone (du)

383
378
374
370
371
371
372
372
371
370
365
360
354
351
348
345
343
341
339
339
338

Forecast for Alt-Kölln, Germany (52.51,13.40)

Generated: 18/12/25 15:54:33. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+1.00