Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 27

First Quarter 61%

12:17

01:10

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

Sun - Rise: 08:47, Set: 16:33, Transit: 12:40. Moon - Rise: 12:17, Set: 01:10. Civil Dark: 17:14 - 08:06. Nautical Dark: 17:57 - 07:22. Astro Dark: 18:39 - 06:41

Total Clouds (% Sky Obscured)

95
87
83
79
71
51
37
6
5
1
1
1
1
1
0
1
1
1
1
9
10
12
11
3

Low Clouds (% Sky Obscured)

62
64
65
68
70
50
34
6
5
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
0
0
0

High Clouds (% Sky Obscured)

8
1
1
1
0
1
1
0
0
0
0
0
0
0
0
1
1
1
1
9
10
11
6
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
11
17
47
98
100
100
100
100
100
98
48
38
26
19
20
44

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
94
93
93
93
93
93
93
93
92
92
94
94
94
91
86
80
79
85
86
88
86
84
83

Pressure (mb)

1034
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1033
1032
1032
1032
1031
1031
1030
1030
1030

Ozone (du)

298
299
298
295
295
296
294
290
288
285
284
283
283
282
281
281
281
282
281
280
279
278
276
278

Sunday 28

Waxing Gibbous 72%

12:31

02:35

21 Good
22 Good
23 Good
00 Good
01 Good
02 OK
03 OK
04 OK
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

Sun - Rise: 08:47, Set: 16:34, Transit: 12:40. Moon - Rise: 12:31, Set: 02:35. Civil Dark: 17:15 - 08:06. Nautical Dark: 17:58 - 07:22. Astro Dark: 18:40 - 06:41

Total Clouds (% Sky Obscured)

1
2
2
2
3
19
13
32
49
54
54
54
65
65
90
95
95
94
96
86
81
96
74
73

Low Clouds (% Sky Obscured)

0
0
0
0
0
4
0
30
39
54
51
50
55
57
89
94
94
92
95
82
78
95
70
73

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
1
1
1
1
16
12
11
17
2
2
1
1
0
5
3
0
0
8
11
8
8
4
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 (%)

67
94
97
100
100
100
100
100
100
100
95
0
0
0
0
0
0
1
1
1
1
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
1
1
0
3
10
6
12
2
13
10
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
4
3
3
3
3
4
3
4
4
5
6
9
8
7
7
8
9
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
84
86
89
91
92
92
92
92
91
91
93
94
94
93
83
73
79
85
89
89
83
72
72

Pressure (mb)

1030
1029
1029
1029
1028
1027
1027
1027
1026
1026
1026
1026
1026
1026
1025
1025
1025
1024
1024
1024
1023
1023
1024
1024

Ozone (du)

277
276
275
275
276
277
276
277
279
281
283
285
284
283
287
288
286
284
282
280
275
277
281
279

Monday 29

Waxing Gibbous 82%

12:50

04:05

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

Sun - Rise: 08:47, Set: 16:35, Transit: 12:41. Moon - Rise: 12:50, Set: 04:05. Civil Dark: 17:15 - 08:06. Nautical Dark: 17:59 - 07:22. Astro Dark: 18:40 - 06:41

Total Clouds (% Sky Obscured)

87
75
54
40
55
66
37
50
55
55
75
54
77
54
2
24
64
63
65
65
47
51
46
41

Low Clouds (% Sky Obscured)

87
75
54
40
54
64
37
50
55
55
72
54
77
54
1
23
46
62
65
61
47
51
46
37

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
26
28
33
17
0
0
4
9

High 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

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
2
1
0
0
1
1
0
1
0
0
1
0
1
0
0
1
8
10
1
7
3
4
6

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
11
11
11
10
9
10
10
8
7
5
4
2
3
2
6
8
8
6
5
4
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
66
68
67
68
69
65
64
69
75
83
91
93
88
77
64
60
67
73
82
85
85
80
77

Pressure (mb)

1025
1025
1025
1026
1026
1026
1027
1027
1028
1028
1028
1029
1029
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030

Ozone (du)

282
286
286
286
285
281
281
287
300
309
317
317
316
317
317
316
319
326
330
329
330
332
336
338

Tuesday 30

Waxing Gibbous 82%

13:16

05:39

21 OK
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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:47, Set: 16:36, Transit: 12:41. Moon - Rise: 13:16, Set: 05:39. Civil Dark: 17:16 - 08:06. Nautical Dark: 18:00 - 07:22. Astro Dark: 18:41 - 06:41

Total Clouds (% Sky Obscured)

37
46
65
75
84
92
87
85
77
79
92
98
100
82
64
47
64
82
98
89
82
76
78
82

Low Clouds (% Sky Obscured)

25
40
58
73
81
91
87
75
63
61
69
87
100
82
64
47
64
82
97
88
81
72
67
67

Medium Clouds (% Sky Obscured)

16
13
7
0
11
21
37
34
35
35
31
30
25
16
8
0
1
2
4
3
1
0
7
14

High Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
5

ISS Passover

Visibility (miles)

9
9
9
1
0
0
6
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
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
13
33
32
25
13
10
11
10
11
20
25
31
20
24
13
7
6
8
5
4
2
4
8

Precipitation Amount (mm)

0
0
0
0.1
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
6
6
7
8
8
8
8
8
9
9
10
11
11
11
10
8
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
74
76
88
96
98
94
94
93
93
89
89
88
83
79
78
76
75
78
80
85
86
88
89

Pressure (mb)

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

Ozone (du)

339
340
339
334
330
329
329
327
322
320
320
321
320
319
318
317
320
320
320
320
322
318
314
313

Wednesday 31

Waxing Gibbous 91%

13:57

07:10

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:47, Set: 16:37, Transit: 12:42. Moon - Rise: 13:57, Set: 07:10. Civil Dark: 17:17 - 08:06. Nautical Dark: 18:01 - 07:22. Astro Dark: 18:42 - 06:41

Total Clouds (% Sky Obscured)

84
90
95
100
98
96
94
95
96
97
97
96
96
97
98
99
99
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

68
76
79
62
55
57
85
87
88
76
77
90
91
89
87
86
87
86
87
90
95
100
95
90

Medium Clouds (% Sky Obscured)

21
31
39
45
33
28
20
20
23
19
21
23
22
15
7
0
20
36
46
51
64
77
84
92

High Clouds (% Sky Obscured)

5
13
17
26
26
26
25
29
32
35
25
15
10
35
60
86
91
95
100
100
100
100
88
76

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
3
0
2

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
Light Rain
Light Rain

Precipitation Probability (%)

15
12
11
11
15
17
20
20
15
13
14
15
15
18
19
18
24
22
26
35
43
54
74
88

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
0.4
0.6

Wind Speed/Direction (mph)

6
6
7
8
8
8
9
10
11
12
12
13
15
15
16
16
16
16
16
16
16
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
86
86
91
93
91
85
80
73
77
80
66
66
66
66
68
69
71
71
77
88
96
96

Pressure (mb)

1021
1021
1020
1019
1019
1018
1017
1016
1015
1014
1013
1012
1012
1011
1010
1009
1008
1007
1006
1004
1004
1003
1002
1001

Ozone (du)

314
317
316
312
312
315
315
313
311
311
307
309
307
312
316
313
314
320
327
334
360
387
413
417

Thursday 1

Waxing Gibbous 97%

14:58

08:27

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
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 08:46, Set: 16:38, Transit: 12:42. Moon - Rise: 14:58, Set: 08:27. Civil Dark: 17:18 - 08:06. Nautical Dark: 18:02 - 07:22. Astro Dark: 18:43 - 06:41

Total Clouds (% Sky Obscured)

100
100
100
100
96
91
88
85
80
75
70
67
63
76
87
99
91
86
82
80
75
66
60
59

Low Clouds (% Sky Obscured)

85
83
81
80
79
75
71
74
76
75
70
65
60
64
68
72
67
64
63
54
45
37
36
37

Medium Clouds (% Sky Obscured)

100
100
100
100
87
73
60
61
53
50
36
25
10
39
68
94
91
86
82
76
60
43
34
25

High Clouds (% Sky Obscured)

65
56
46
37
25
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
88
71
66
64
65
55
46
36
37
40
46
48
48
48
50
52
52
40
30
16
19
22

Precipitation Amount (mm)

0.7
0.7
0.5
0
0.2
0.3
0.4
0.3
0.2
0
0
0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.1
0
0
0
0

Wind Speed/Direction (mph)

13
12
12
12
12
12
11
11
11
11
12
11
11
11
12
14
16
14
12
10
9
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
93
89
86
82
82
79
77
76
73
72
74
76
78
74
69
64
64
65
65
69
71
77
77

Pressure (mb)

1001
1000
999
999
998
998
998
997
997
997
997
997
997
997
997
997
998
998
998
998
999
999
1000
1000

Ozone (du)

421
425
413
401
389
389
389
389
386
383
380
375
370
365
371
377
383
384
386
387
388
390
391
396

Friday 2

Waxing Gibbous 100%

16:19

09:24

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
16 Bad
17 Bad
18 Bad

Sun - Rise: 08:46, Set: 16:39, Transit: 12:43. Moon - Rise: 16:19, Set: 09:24. Civil Dark: 17:19 - 08:06. Nautical Dark: 18:03 - 07:22. Astro Dark: 18:44 - 06:41

Total Clouds (% Sky Obscured)

63
63
72
77
79
81
82
80
81
77
75
72
70
64
55
43
50
57
64
60
57
54

Low Clouds (% Sky Obscured)

37
37
35
33
32
34
36
39
41
44
43
44
46
46
46
43
45
47
48
44
44
41

Medium Clouds (% Sky Obscured)

21
26
36
41
56
55
55
50
36
25
24
20
20
14
8
2
8
15
22
19
18
15

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

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

Fog (%)

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

Precipitation Probability (%)

17
30
31
24
18
12
1
7
12
15
15
12
3
11
13
13
20
22
20
20
21
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-2
-2
-3
-3
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3
-3
2
2
2
2
2

Dew Point (°C)

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

Relative Humidity (%)

77
77
77
78
78
77
78
77
80
80
80
80
80
81
77
73
71
73
77
82
86
89

Pressure (mb)

1000
1001
1001
1002
1002
1002
1003
1003
1003
1004
1004
1005
1005
1006
1006
1006
1007
1007
1007
1007
1007
1007

Ozone (du)

401
407
406
405
405
396
388
380
381
383
384
381
378
375
373
371
369
370
371
372
369
367

Forecast for Amersfoort, Gemeente Amersfoort, Netherlands (52.16,5.39)

Generated: 27/12/25 21:28:21. Forecast: 27/12/25 to 02/01/26. Timezone: UTC+1.00