Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Full Moon 98%

16:20

09:45

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 08:34, Set: 16:31, Transit: 12:32. Moon - Rise: 16:20, Set: 09:45. Civil Dark: 17:11 - 07:54. Nautical Dark: 17:54 - 07:11. Astro Dark: 18:35 - 06:30

Total Clouds (% Sky Obscured)

35
44
49
55
68
69
76
84
74
70
100
99
54
49
64
100
100
100
100
100
100
98
100
100

Low Clouds (% Sky Obscured)

35
44
49
55
68
69
76
84
74
62
58
56
50
49
43
40
38
45
55
62
74
97
84
100

Medium Clouds (% Sky Obscured)

35
42
16
0
0
0
0
0
0
0
0
15
3
1
17
69
100
100
100
100
54
98
99
100

High Clouds (% Sky Obscured)

12
15
9
1
0
0
0
0
0
17
81
86
10
7
32
100
100
84
100
90
80
1
10
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
6
8
9

Fog (%)

37
12
10
54
11
10
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
Very Light Rain
Light Rain
None
Very Light Rain

Precipitation Probability (%)

0
0
0
2
2
2
2
2
3
2
1
0
0
0
0
0
0
6
24
28
73
95
60
59

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.8
0
0.3

Wind Speed/Direction (mph)

5
5
5
5
5
5
5
7
8
8
8
8
8
8
9
10
12
13
14
15
16
16
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
96
96
94
94
91
86
82
76
74
77
79
85
83
83
83
82
79
78
78
79
79
82

Pressure (mb)

1007
1007
1007
1008
1008
1009
1010
1010
1010
1010
1009
1009
1009
1009
1009
1008
1008
1007
1006
1005
1004
1003
1002
1001

Ozone (du)

327
331
333
336
339
340
343
352
360
354
342
337
335
330
324
320
316
312
305
302
302
301
301
302

Saturday 6

Waning Gibbous 93%

17:32

10:53

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 08:35, Set: 16:30, Transit: 12:33. Moon - Rise: 17:32, Set: 10:53. Civil Dark: 17:11 - 07:55. Nautical Dark: 17:54 - 07:12. Astro Dark: 18:35 - 06:31

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
97
97
100
95
97
100
100
100
100
100
100
87
93
95
89
85
90
91

Low Clouds (% Sky Obscured)

94
100
85
83
83
77
65
86
79
85
67
75
90
76
88
89
89
75
77
88
79
75
81
80

Medium Clouds (% Sky Obscured)

100
100
85
100
100
93
89
85
72
81
45
72
100
99
100
100
100
72
84
93
70
67
26
23

High Clouds (% Sky Obscured)

76
20
93
100
100
92
60
74
100
13
83
100
100
89
100
100
100
5
43
17
10
3
0
0

ISS Passover

Visibility (miles)

9
9
9
7
9
4
5
9
9
9
9
9
5
2
3
3
4
7
4
5
3
7
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
Light Rain
None
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

15
40
95
47
63
88
61
42
30
22
25
52
95
95
95
95
84
84
81
92
82
52
27
22

Precipitation Amount (mm)

0
0
0.9
0
0.3
0.6
0.2
0
0
0
0
0
1.5
1.1
0.6
0.8
0.5
0.5
0.6
0.7
0.6
0.2
0
0

Wind Speed/Direction (mph)

16
16
17
16
15
16
17
17
17
17
17
17
18
17
16
17
18
18
17
17
17
18
17
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
82
85
90
87
90
90
87
84
81
81
83
85
90
91
90
87
84
84
84
87
84
84
80

Pressure (mb)

1000
1000
999
999
999
999
999
999
999
999
999
999
999
999
999
999
1000
1000
1001
1002
1002
1002
1003
1004

Ozone (du)

300
297
295
292
291
291
292
293
292
287
285
283
283
284
285
282
282
285
288
289
287
282
281
281

Sunday 7

Waning Gibbous 86%

18:59

11:39

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 08:37, Set: 16:30, Transit: 12:33. Moon - Rise: 18:59, Set: 11:39. Civil Dark: 17:10 - 07:56. Nautical Dark: 17:54 - 07:13. Astro Dark: 18:35 - 06:32

Total Clouds (% Sky Obscured)

86
77
78
78
74
84
98
99
99
98
100
100
100
100
100
100
100
100
100
100
100
97
94
90

Low Clouds (% Sky Obscured)

67
63
64
67
70
75
76
79
77
53
92
62
86
88
89
88
91
97
94
90
69
74
73
73

Medium Clouds (% Sky Obscured)

2
16
29
15
4
23
44
77
94
63
86
88
99
100
100
100
100
100
100
52
47
38
29
19

High Clouds (% Sky Obscured)

49
4
5
6
5
13
86
82
54
91
100
100
100
100
100
100
100
100
61
100
100
83
73
60

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
3
3
1
3
8
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
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

14
7
4
0
0
0
0
0
0
1
1
4
29
79
95
95
95
95
95
62
25
15
20
23

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
1.3
1.8
2.5
1.9
1.2
0.3
0
0
0
0

Wind Speed/Direction (mph)

16
16
14
13
12
10
9
9
10
10
9
9
9
9
11
12
12
12
15
16
18
21
21
19

Chance of Frost

Temperature (°C)

9
9
9
9
8
8
9
9
10
10
11
11
11
10
10
10
10
11
12
13
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

6
6
6
7
7
7
7
8
8
8
8
9
9
9
10
10
10
10
11
11
11
11
9
9

Relative Humidity (%)

81
82
84
87
88
90
90
90
88
87
85
88
90
93
96
96
96
96
95
89
89
87
79
80

Pressure (mb)

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

Ozone (du)

275
274
275
281
281
281
280
277
276
276
276
276
277
277
277
279
281
282
288
297
298
297
299
299

Monday 8

Waning Gibbous 83%

20:29

12:08

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 08:38, Set: 16:30, Transit: 12:34. Moon - Rise: 20:29, Set: 12:08. Civil Dark: 17:10 - 07:57. Nautical Dark: 17:54 - 07:14. Astro Dark: 18:35 - 06:33

Total Clouds (% Sky Obscured)

85
75
85
78
73
67
78
89
100
89
79
68
73
75
77
84
91
98
99
99
100
100
100
100

Low Clouds (% Sky Obscured)

71
68
69
62
62
48
54
54
48
44
52
53
53
53
48
52
56
58
55
53
51
50
49
49

Medium Clouds (% Sky Obscured)

20
21
18
12
6
0
12
20
38
27
16
7
28
63
21
31
44
94
70
34
26
82
91
100

High Clouds (% Sky Obscured)

57
35
70
70
65
50
60
80
100
83
61
38
22
13
4
3
1
0
33
67
100
100
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
5

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
Light Rain

Precipitation Probability (%)

19
13
5
7
12
17
19
17
8
6
9
2
14
3
3
11
18
12
15
17
19
19
50
77

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
0.5

Wind Speed/Direction (mph)

18
17
15
15
14
14
13
13
13
13
13
13
13
12
12
11
11
10
11
10
9
9
8
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
79
84
83
84
87
88
90
86
84
86
87
87
89
90
92
93
92
90
90
93
93
95
96

Pressure (mb)

1004
1005
1006
1007
1007
1008
1009
1009
1010
1010
1010
1010
1011
1011
1012
1012
1012
1013
1013
1013
1013
1013
1013
1012

Ozone (du)

298
297
297
299
300
300
302
306
309
317
324
326
330
335
334
332
328
326
325
326
324
321
319
311

Tuesday 9

Waning Gibbous 77%

21:55

12:28

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
01 Bad
02 Bad
03 Bad

Sun - Rise: 08:39, Set: 16:29, Transit: 12:34. Moon - Rise: 21:55, Set: 12:28. Civil Dark: 17:10 - 07:58. Nautical Dark: 17:54 - 07:15. Astro Dark: 18:35 - 06:33

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
94
91
89
90
81

Low Clouds (% Sky Obscured)

57
65
70
71
71
72
65
62
57
69
82
93
89
85
80
78
78
77
81
85
85
78
64
58

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
84
72
95
70
48
31
34
39
41
38
36
33

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
76
53
32
24
15
8

ISS Passover

Visibility (miles)

9
7
9
5
4
6
9
5
2
4
3
8
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

74
63
66
95
95
92
95
95
95
95
95
92
92
94
83
49
29
15
11
7
4
5
6
6

Precipitation Amount (mm)

0.3
0.2
0.3
0.7
0.8
0.7
0.8
1.3
1.1
1
0.7
0.6
0.6
0.7
0.5
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
9
11
12
12
13
13
13
13
14
14
14
14
15
14
14
15
15
15
15
15
15
15
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
11
10
10
10
10
10
10
10
10
10
9
9
10
9
8
8
7
7
7
7
7
7
7

Relative Humidity (%)

93
95
92
90
90
87
88
92
92
89
90
81
80
83
77
74
71
68
66
67
70
72
75
76

Pressure (mb)

1012
1012
1011
1011
1010
1010
1009
1009
1008
1008
1007
1006
1006
1006
1005
1005
1003
1003
1003
1003
1004
1004
1004
1005

Ozone (du)

307
304
304
303
299
295
292
287
286
283
282
283
284
284
284
284
283
282
282
282
282
282
280
279

Wednesday 10

Waning Gibbous 67%

23:16

12:42

04 Bad
05 OK
06 Good
07 OK
08 OK
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

Sun - Rise: 08:40, Set: 16:29, Transit: 12:35. Moon - Rise: 23:16, Set: 12:42. Civil Dark: 17:10 - 07:59. Nautical Dark: 17:54 - 07:16. Astro Dark: 18:35 - 06:34

Total Clouds (% Sky Obscured)

57
32
7
25
41
58
62
65
62
69
85
100
99
98
97
85
72
56
55
63
62
54
53
64

Low Clouds (% Sky Obscured)

39
19
1
19
38
50
44
38
36
53
69
87
85
84
80
68
52
29
37
38
39
46
53
52

Medium Clouds (% Sky Obscured)

18
8
4
4
4
4
7
11
16
31
47
75
65
52
37
24
12
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

6
4
2
2
1
0
0
1
1
18
47
80
86
85
81
73
61
51
34
17
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 (%)

5
4
3
1
0
0
0
2
2
6
9
16
22
22
17
13
8
0
2
3
1
3
4
4

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)

15
14
13
12
12
13
14
15
17
18
18
19
19
18
16
15
14
13
12
12
11
11
10
9

Chance of Frost

Temperature (°C)

11
11
10
10
10
10
10
11
12
12
12
12
12
11
11
11
11
10
10
10
10
10
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
77
77
77
76
73
71
72
71
70
73
77
81
79
76
73
76
76
78
81
84
87
88
88

Pressure (mb)

1006
1006
1006
1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1009
1011
1012
1013
1014
1015
1015
1016
1016
1017
1017

Ozone (du)

277
278
280
281
281
282
282
283
284
285
285
284
284
286
288
290
296
303
309
306
303
300
300
300

Thursday 11

Third Quarter 57%

00:32

12:54

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

Sun - Rise: 08:41, Set: 16:29, Transit: 12:35. Moon - Rise: 00:32, Set: 12:54. Civil Dark: 17:10 - 08:00. Nautical Dark: 17:54 - 07:17. Astro Dark: 18:35 - 06:35

Total Clouds (% Sky Obscured)

66
57
49
35
24
16
20
24
28
26
22
17
20
24
29
45
62
73
76
78
80

Low Clouds (% Sky Obscured)

54
57
49
35
24
16
20
24
28
26
22
17
20
24
29
24
13
3
14
25
36

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
22
29

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
2
1
1
0
0
0
0
25
51
73
76
78
80

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 (%)

4
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
88
90
91
93
94
87
81
76
77
81
84
85
87
88
88
87
87
82
79

Pressure (mb)

1017
1018
1018
1018
1018
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1017
1016
1016
1015
1015

Ozone (du)

300
299
298
297
297
297
298
297
296
295
295
296
296
297
297
298
299
301
303
302
301

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

Generated: 05/12/25 04:25:48. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+1.00