Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 11

Waning Gibbous 100%

22:58

05:30

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

Sun - Rise: 05:35, Set: 21:59, Transit: 13:47. Moon - Rise: 22:58, Set: 05:30. Civil Dark: 22:46 - 04:48. Nautical Dark: 23:56 - 03:38. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

1
3
21
63
14
33
71
71
95
93
96
93
71
83
40
15
4
3
3
4
6
28
6
27

Low Clouds (% Sky Obscured)

0
0
21
39
5
0
0
0
39
53
66
64
34
3
0
0
0
0
0
0
4
28
6
27

Medium Clouds (% Sky Obscured)

1
3
21
22
7
20
37
39
46
40
40
39
27
16
12
2
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
3
21
19
9
2
1
1
3
10
28
13
3
50
10
10
4
3
3
4
3
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
1
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
4
4
3
3
3
4
5
6
7
8
10
11
11
11
11
11
11
10
8
7
6
5

Chance of Frost

Temperature (°C)

17
16
15
15
14
14
15
16
18
19
20
21
22
23
23
23
23
22
22
20
19
18
17
16

Feels Like (°C)

18
18
17
16
15
15
16
18
19
20
21
22
21
22
22
22
22
22
21
21
19
19
19
18

Dew Point (°C)

14
14
13
13
13
13
13
12
12
11
11
11
11
12
12
12
12
13
13
13
14
14
14
14

Relative Humidity (%)

83
89
89
90
92
92
87
78
67
60
56
52
49
49
50
50
51
54
59
63
70
78
83
85

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1020
1020
1020
1019
1019
1019
1019
1019
1018

Ozone (du)

331
330
329
328
328
327
327
328
327
326
329
331
329
331
332
333
333
334
335
336
339
342
346
348

Saturday 12

Waning Gibbous 98%

23:18

06:51

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

Sun - Rise: 05:36, Set: 21:58, Transit: 13:47. Moon - Rise: 23:18, Set: 06:51. Civil Dark: 22:45 - 04:50. Nautical Dark: 23:54 - 03:40. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

46
43
31
27
46
86
79
92
63
66
71
25
31
17
8
59
90
47
66
51
57
41
46
32

Low Clouds (% Sky Obscured)

46
43
31
27
43
69
71
67
45
46
22
0
0
0
0
0
24
25
42
40
47
41
46
32

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
0
0
0
0
10
6
6
3
18
24
29
24
13
4
0
0

High Clouds (% Sky Obscured)

0
0
1
4
17
55
33
92
17
9
43
6
0
0
0
59
90
3
1
0
2
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
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
3
4
3
5
6
6
7
7
9
12
11
11
12
11
11
10
8
7
6
6

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
15
17
19
20
21
22
24
24
24
24
24
22
22
21
20
18
18
17

Feels Like (°C)

18
18
17
17
17
16
16
17
20
19
20
21
22
21
21
21
22
22
21
20
19
19
19
19

Dew Point (°C)

14
14
14
14
14
13
13
14
13
12
11
10
10
10
10
9
11
12
13
13
14
15
15
15

Relative Humidity (%)

89
89
90
92
93
92
87
79
70
60
51
45
42
42
40
37
44
53
57
60
68
82
85
86

Pressure (mb)

1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1013
1013

Ozone (du)

349
349
348
347
345
342
346
349
344
340
339
337
336
336
337
340
336
331
330
330
331
331
334
337

Sunday 13

Waning Gibbous 95%

23:33

08:16

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

Sun - Rise: 05:37, Set: 21:57, Transit: 13:47. Moon - Rise: 23:33, Set: 08:16. Civil Dark: 22:44 - 04:51. Nautical Dark: 23:52 - 03:42. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

22
29
27
26
33
26
36
68
100
100
97
97
96
92
73
49
24
31
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

22
29
27
26
21
1
34
64
61
60
71
64
65
47
26
25
0
19
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
15
13
44
47
78
88
91
90
73
25
20
10
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
1
12
22
0
7
100
91
59
55
38
5
17
37
24
23
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
1
4
1
15
7
21
11
27
27
8
5
3
1
0
2
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
4
4
3
3
3
3
3
3
3
5
7
7
8
9
9
9
9
8
8
6
5
4
4

Chance of Frost

Temperature (°C)

17
17
16
16
16
16
16
18
20
21
22
23
23
23
23
23
23
23
22
21
20
19
18
17

Feels Like (°C)

19
19
18
18
18
16
17
18
20
23
23
22
22
22
22
22
22
22
21
22
21
21
20
20

Dew Point (°C)

15
15
15
15
15
15
14
14
14
14
14
14
13
12
12
12
12
12
13
13
15
16
16
16

Relative Humidity (%)

87
89
90
92
93
93
89
79
70
62
58
55
52
51
49
48
49
49
54
60
70
84
88
89

Pressure (mb)

1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012

Ozone (du)

342
344
342
339
338
336
334
334
333
332
332
333
334
334
333
333
335
336
339
342
343
344
343
338

Monday 14

Waning Gibbous 89%

23:46

09:39

01 Good
02 OK
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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 05:38, Set: 21:56, Transit: 13:47. Moon - Rise: 23:46, Set: 09:39. Civil Dark: 22:42 - 04:53. Nautical Dark: 23:50 - 03:45. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
27
73
99
91
99
99
99
100
100
100
100
100
97
69
67
66
64
71
63
55
50
67
82

Low Clouds (% Sky Obscured)

0
11
22
27
24
24
25
39
56
67
74
82
85
84
69
67
66
61
54
40
25
10
6
3

Medium Clouds (% Sky Obscured)

0
13
26
39
34
29
33
34
42
81
98
96
78
61
36
29
27
25
22
20
18
17
64
50

High Clouds (% Sky Obscured)

0
10
73
92
70
82
74
81
89
100
100
99
99
66
33
0
0
0
0
0
0
0
33
67

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

Precipitation Probability (%)

0
0
0
0
2
6
9
33
44
52
65
64
55
39
24
4
6
5
5
7
6
1
2
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
16
16
16
17
18
19
20
20
21
22
23
23
24
24
24
23
22
21
19
19
19

Feels Like (°C)

20
20
19
17
18
18
18
18
19
20
19
20
21
22
23
24
24
24
24
21
19
18
17
17

Dew Point (°C)

16
15
15
15
15
15
15
15
14
13
12
11
11
10
10
11
11
11
11
11
13
15
12
11

Relative Humidity (%)

90
90
90
90
92
90
88
80
71
65
58
54
48
45
44
44
45
46
47
50
62
75
63
59

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015

Ozone (du)

334
331
329
329
327
327
327
328
330
331
332
331
329
326
325
325
326
327
325
324
324
324
327
326

Tuesday 15

Waning Gibbous 80%

23:57

11:03

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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 05:40, Set: 21:55, Transit: 13:48. Moon - Rise: 23:57, Set: 11:03. Civil Dark: 22:41 - 04:54. Nautical Dark: 23:48 - 03:47. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

83
82
85
93
93
90
83
87
93
90
87
100
100
87
73
60
74
87
100
97
94
92
92
84

Low Clouds (% Sky Obscured)

0
22
43
65
68
71
73
63
56
42
37
35
35
27
20
13
9
4
0
0
0
0
9
18

Medium Clouds (% Sky Obscured)

17
10
17
24
24
24
23
35
44
54
33
18
3
2
1
0
23
45
67
53
39
37
38
34

High Clouds (% Sky Obscured)

83
82
85
93
74
48
20
45
70
90
87
100
100
83
67
50
67
83
100
67
34
2
27
52

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
2
15
20
11
8
9
6
2
3
1
0
0
0
0
0
0
0
0
0
0
1
1

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
7
10
9
12
13
11
12
13
12
14
14
13
14
13
12
11
10
9
9
7
6
5
5

Chance of Frost

Temperature (°C)

18
18
18
17
17
17
17
18
18
19
19
20
21
21
21
21
21
20
20
19
18
17
16
16

Feels Like (°C)

16
19
17
18
15
15
15
16
16
17
17
17
16
16
16
16
16
16
16
16
16
16
16
16

Dew Point (°C)

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

Relative Humidity (%)

69
79
77
86
85
81
77
71
66
62
55
50
44
38
39
40
40
42
42
43
51
59
69
69

Pressure (mb)

1015
1015
1015
1016
1016
1017
1017
1018
1019
1019
1020
1020
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

327
328
331
333
337
340
346
354
355
354
353
353
353
353
354
355
355
357
358
359
353
348
342
338

Wednesday 16

Waning Gibbous 71%

00:08

12:26

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
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 05:41, Set: 21:54, Transit: 13:48. Moon - Rise: 00:08, Set: 12:26. Civil Dark: 22:40 - 04:56. Nautical Dark: 23:46 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

78
84
87
84
86
87
88
88
87
87
89
91
94
96
96
97
95
93
91
88
83
79
64
50

Low Clouds (% Sky Obscured)

27
21
15
9
6
3
0
5
10
10
10
10
15
15
15
15
19
22
21
24
27
23
17
10

Medium Clouds (% Sky Obscured)

25
30
35
40
42
45
47
44
40
30
34
38
42
46
49
52
52
51
51
34
17
0
0
0

High Clouds (% Sky Obscured)

74
63
52
44
40
39
33
60
69
79
78
77
71
66
72
84
79
77
69
76
78
77
64
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
3
4
1
8
9
8
10
11
12
13
13
12
16
15
13
12
11
10
8
6
5
4
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)

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

Chance of Frost

Temperature (°C)

16
15
15
15
15
16
16
17
18
19
20
20
20
21
21
21
21
21
21
21
20
19
17
17

Feels Like (°C)

15
14
14
15
15
15
14
14
16
16
17
17
17
17
19
19
19
19
19
19
18
19
18
18

Dew Point (°C)

10
10
10
10
11
12
12
13
13
13
14
14
14
14
15
15
15
16
16
16
16
16
15
15

Relative Humidity (%)

70
72
73
73
74
75
74
74
72
70
69
68
67
66
67
69
70
73
74
76
80
84
86
89

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1020

Ozone (du)

335
331
328
325
322
321
320
319
319
319
320
319
318
317
317
318
318
318
317
317
316
316
316
314

Thursday 17

Waning Gibbous 60%

00:20

13:51

Sun - Rise: 05:42, Set: 21:53, Transit: 13:48. Moon - Rise: 00:20, Set: 13:51. Civil Dark: 22:38 - 04:57. Nautical Dark: 23:44 - 03:51. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 11/07/25 01:05:04. Forecast: 11/07/25 to 17/07/25. Timezone: UTC+2.00