Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 19

Waxing Crescent 1%

09:25

17:42

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:39, Set: 17:06, Transit: 12:52. Moon - Rise: 09:25, Set: 17:42. Civil Dark: 17:45 - 08:00. Nautical Dark: 18:27 - 07:18. Astro Dark: 19:07 - 06:38

Total Clouds (% Sky Obscured)

99
99
99
96
96
89
83
100
100
100
100
100
100
100
100
100
100
50
54
68
69
76
65
65

Low Clouds (% Sky Obscured)

81
82
82
73
56
40
0
0
0
0
0
0
0
0
0
0
0
6
5
0
0
0
0
0

Medium Clouds (% Sky Obscured)

69
88
60
80
84
81
83
100
100
100
100
100
100
100
100
100
99
50
34
36
39
38
30
34

High Clouds (% Sky Obscured)

14
5
2
1
1
8
9
10
13
20
20
32
93
100
100
99
100
20
5
2
2
5
36
19

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
9
4
5
7
2
9
10
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
86
88
84
86
84
79
75
70
69
72
75
78
80
82
82
83
83
85
86
88
89
89
91

Pressure (mb)

1018
1017
1017
1018
1018
1018
1018
1018
1018
1017
1018
1018
1018
1018
1018
1018
1019
1019
1019
1018
1019
1019
1018
1018

Ozone (du)

386
384
382
380
379
378
377
374
372
371
369
367
366
366
365
367
368
368
368
368
367
366
365
364

Tuesday 20

Waxing Crescent 3%

09:42

19:02

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

Sun - Rise: 08:37, Set: 17:08, Transit: 12:53. Moon - Rise: 09:42, Set: 19:02. Civil Dark: 17:46 - 07:59. Nautical Dark: 18:28 - 07:17. Astro Dark: 19:08 - 06:37

Total Clouds (% Sky Obscured)

86
83
81
90
72
42
41
47
52
78
59
75
39
59
67
60
44
57
66
90
99
98
90
99

Low Clouds (% Sky Obscured)

0
0
5
8
0
0
4
17
8
0
0
0
0
0
0
0
0
33
29
27
25
27
28
26

Medium Clouds (% Sky Obscured)

74
75
74
72
72
25
22
8
3
7
17
9
17
23
46
26
18
19
9
41
65
60
49
60

High Clouds (% Sky Obscured)

19
53
29
22
20
9
12
30
45
78
59
75
15
43
38
21
11
13
44
77
99
97
90
99

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
6
6
6
6
7
7
7
6
6
7
7
7
7
6
7
6
7
7
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
91
91
88
80
72
67
68
69
75
81
85
85
85
86
88
88
89
89
89
89
89

Pressure (mb)

1018
1018
1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1014
1014
1013
1013
1013
1012
1012
1011
1010
1009
1009
1008

Ozone (du)

363
362
358
358
360
362
364
362
363
365
366
366
364
366
369
372
372
372
372
371
372
371
369
367

Wednesday 21

Waxing Crescent 8%

09:55

20:22

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:36, Set: 17:10, Transit: 12:53. Moon - Rise: 09:55, Set: 20:22. Civil Dark: 17:48 - 07:58. Nautical Dark: 18:30 - 07:16. Astro Dark: 19:10 - 06:36

Total Clouds (% Sky Obscured)

95
97
100
100
56
60
100
100
100
100
100
100
100
100
100
100
100
93
58
77
86
93
100
100

Low Clouds (% Sky Obscured)

17
10
5
0
0
0
5
5
5
3
29
47
56
59
63
45
14
18
15
49
61
68
76
76

Medium Clouds (% Sky Obscured)

65
28
100
75
22
20
25
15
27
84
96
100
100
85
96
76
69
20
58
72
81
90
98
95

High Clouds (% Sky Obscured)

95
97
91
100
49
57
100
100
100
100
100
100
100
100
100
100
100
90
53
51
67
87
100
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 (%)

2
5
4
1
2
1
0
0
0
1
0
0
0
0
1
5
1
0
0
2
10
16
21
23

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
9
10
11
10
10
10
10
10
11
10
11
11
11
11
11
10
9
9
9
9
9
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
88
84
81
81
78
77
74
75
72
74
75
76
78
76
76
75
76
79
80
80
80
79
77

Pressure (mb)

1007
1006
1005
1004
1004
1004
1003
1002
1001
1000
999
999
998
998
998
997
997
997
996
996
996
995
995
995

Ozone (du)

371
368
364
362
364
365
360
352
348
345
342
340
338
338
339
340
342
343
345
346
347
348
350
351

Thursday 22

Waxing Crescent 15%

10:07

21:42

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:35, Set: 17:11, Transit: 12:53. Moon - Rise: 10:07, Set: 21:42. Civil Dark: 17:49 - 07:57. Nautical Dark: 18:31 - 07:15. Astro Dark: 19:11 - 06:35

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
99
98
99
99
100
100
100
100
100
100
100
89
78
66
71
76
82
88

Low Clouds (% Sky Obscured)

78
84
82
88
73
83
79
70
69
66
67
67
67
68
64
60
57
52
47
42
49
57
64
69

Medium Clouds (% Sky Obscured)

51
38
43
95
91
76
89
86
99
99
100
100
100
100
100
100
99
87
78
66
67
68
71
81

High Clouds (% Sky Obscured)

100
100
96
91
82
68
57
38
51
64
83
87
94
100
100
100
100
70
39
9
6
3
0
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 (%)

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 (%)

25
27
25
25
21
19
20
26
28
24
27
14
17
18
16
18
29
31
23
20
18
19
8
21

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
80
82
80
80
78
75
76
82
81
82
84
82
84
81
75
72
78
82
82
85
79
72
73

Pressure (mb)

995
995
994
995
995
995
995
995
995
995
995
995
995
995
995
996
996
996
996
996
996
996
995
995

Ozone (du)

353
353
355
352
351
352
354
357
361
365
371
375
378
376
378
382
385
385
379
375
374
377
379
381

Friday 23

Waxing Crescent 23%

10:17

23:02

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 OK
01 OK
02 OK
03 Bad
04 Bad

Sun - Rise: 08:34, Set: 17:13, Transit: 12:53. Moon - Rise: 10:17, Set: 23:02. Civil Dark: 17:51 - 07:56. Nautical Dark: 18:33 - 07:14. Astro Dark: 19:13 - 06:34

Total Clouds (% Sky Obscured)

94
100
100
100
100
99
99
98
81
64
54
56
58
57
82
84
85
67
47
25
20
10
15
24

Low Clouds (% Sky Obscured)

74
77
78
77
78
80
84
85
71
55
44
47
48
51
73
77
81
59
38
19
15
10
15
24

Medium Clouds (% Sky Obscured)

83
58
62
61
60
57
81
91
63
34
2
2
23
30
67
76
77
67
47
25
20
10
15
24

High Clouds (% Sky Obscured)

3
4
36
68
100
77
54
31
20
10
4
4
5
0
8
19
27
28
27
25
20
10
15
24

ISS Passover

Visibility (miles)

9
9
9
9
9
4
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Very Light Rain

Precipitation Probability (%)

14
18
12
29
38
42
22
10
11
10
1
4
12
5
14
16
15
16
18
18
27
38
50
54

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
75
78
83
90
91
90
78
73
69
69
72
78
82
82
82
83
83
83
85
86
85
85
85

Pressure (mb)

995
995
995
995
996
996
997
997
997
997
997
997
998
998
998
1000
1000
1001
1001
1001
1001
1001
1001
1001

Ozone (du)

381
384
382
375
372
366
363
363
364
364
363
362
360
359
358
358
358
358
359
360
361
362
363
363

Saturday 24

Waxing Crescent 33%

10:28

00:25

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
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 08:33, Set: 17:15, Transit: 12:54. Moon - Rise: 10:28, Set: 00:25. Civil Dark: 17:53 - 07:55. Nautical Dark: 18:34 - 07:13. Astro Dark: 19:14 - 06:33

Total Clouds (% Sky Obscured)

34
46
57
69
78
77
75
76
80
81
83
83
84
83
82
80
81
84
86
91
94
95
96
97

Low Clouds (% Sky Obscured)

34
43
57
67
78
77
75
76
80
81
81
83
84
83
82
80
81
84
86
91
94
93
94
95

Medium Clouds (% Sky Obscured)

34
46
57
69
75
63
48
38
25
17
11
9
6
6
17
29
40
40
30
25
25
31
40
54

High Clouds (% Sky Obscured)

34
46
57
62
58
45
34
27
29
19
13
8
4
5
0
5
5
5
5
10
15
10
10
0

ISS Passover

Visibility (miles)

8
7
5
7
8
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

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

Precipitation Probability (%)

58
64
61
56
49
43
34
17
16
13
9
9
8
2
6
4
0
0
1
0
3
4
4
4

Precipitation Amount (mm)

0.3
0.4
0.3
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
7
7
8
7
8
8
7
7
7
7
7
8
8
9
8
8
8
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
89
94
93
91
91
88
85
83
82
82
80
80
80
80
78
76
74
74
73
73
73
72
72

Pressure (mb)

1001
1001
1001
1001
1002
1002
1002
1002
1002
1002
1002
1002
1003
1003
1003
1003
1004
1004
1004
1005
1005
1005
1005
1005

Ozone (du)

365
366
367
369
371
372
372
372
371
372
373
374
374
373
373
374
375
376
377
377
377
378
379
380

Sunday 25

Waxing Crescent 45%

10:41

01:51

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: 08:31, Set: 17:17, Transit: 12:54. Moon - Rise: 10:41, Set: 01:51. Civil Dark: 17:54 - 07:54. Nautical Dark: 18:36 - 07:12. Astro Dark: 19:16 - 06:32

Total Clouds (% Sky Obscured)

99
100
100
100
100
99
98
97
93
89
83
88
94
100
99
99
98
92
86
80

Low Clouds (% Sky Obscured)

96
98
96
94
91
89
86
85
80
76
72
66
63
65
77
88
98
92
86
80

Medium Clouds (% Sky Obscured)

65
79
76
70
72
76
80
82
70
60
45
64
82
100
78
60
43
32
19
4

High Clouds (% Sky Obscured)

0
0
5
5
10
10
20
30
35
30
20
22
24
22
17
12
7
5
5
5

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

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

Precipitation Amount (mm)

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
7
7
7
7
6
7
7
7
7
6
5
5
5
5
5
5

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-1
-1
-0
0
1
1
1
1
1
1
0
0
-0
-1
-1
-1

Feels Like (°C)

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

Dew Point (°C)

-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-5
-4
-5
-5
-5
-5
-5
-5
-5
-5

Relative Humidity (%)

72
74
72
72
72
72
70
67
65
65
66
66
66
67
69
70
71
72
74
75

Pressure (mb)

1006
1006
1006
1006
1007
1007
1008
1008
1008
1008
1008
1008
1009
1009
1009
1010
1010
1010
1010
1011

Ozone (du)

380
380
380
381
382
383
384
385
385
385
384
384
385
386
387
387
388
388
388
387

Forecast for Leiden, Gemeente Leiden, Netherlands (52.16,4.50)

Generated: 19/01/26 05:25:04. Forecast: 19/01/26 to 25/01/26. Timezone: UTC+1.00