Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 17

Waxing Crescent 1%

06:09

23:22

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:41, Set: 21:33, Transit: 13:38. Moon - Rise: 06:09, Set: 23:22. Civil Dark: 22:16 - 04:58. Nautical Dark: 23:16 - 03:57. Astro Dark: 01:05 - 01:58

Total Clouds (% Sky Obscured)

94
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

85
82
92
42
53
52
50
45
27
0
9
30
7
42
50
56
65
63
59
69
76
65
50
61

Medium Clouds (% Sky Obscured)

69
93
100
100
100
100
100
100
100
100
98
99
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

55
18
70
100
100
100
75
32
15
30
100
100
13
4
2
1
24
99
100
79
81
100
54
65

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

81
83
88
77
26
20
17
30
26
14
31
14
24
24
35
66
69
69
56
40
57
74
95
95

Precipitation Amount (mm)

0.2
0.4
0.6
0.5
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.4
0
0
0.2
0.3
1
0.8

Wind Speed/Direction (mph)

11
12
12
13
11
9
8
7
6
8
8
6
6
6
6
5
5
5
5
7
7
9
8
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
11
12
10
10
10
10
10
10
11
11
10
10
10
10
10
10
10
9
9
9
9
8
7

Relative Humidity (%)

90
82
80
74
71
74
73
75
80
87
93
93
93
96
95
96
96
96
95
93
90
87
80
75

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1011
1011
1011

Ozone (du)

390
388
388
390
391
394
398
398
400
403
406
407
409
409
413
414
414
416
416
415
415
413
413
414

Monday 18

Waxing Crescent 5%

07:14

00:37

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

Sun - Rise: 05:40, Set: 21:34, Transit: 13:38. Moon - Rise: 07:14, Set: 00:37. Civil Dark: 22:18 - 04:57. Nautical Dark: 23:19 - 03:55. Astro Dark: 01:18 - N/A

Total Clouds (% Sky Obscured)

100
100
97
72
62
89
95
64
65
27
20
21
18
34
59
31
53
98
100
100
98
92
100
100

Low Clouds (% Sky Obscured)

49
54
60
49
46
33
47
53
45
0
0
0
0
16
28
31
38
42
44
27
36
45
57
76

Medium Clouds (% Sky Obscured)

100
98
93
61
40
85
91
45
33
14
15
16
12
21
18
4
26
46
56
90
93
88
98
99

High Clouds (% Sky Obscured)

81
68
23
30
1
0
0
0
0
0
0
0
1
0
44
0
4
98
100
100
55
11
55
100

ISS Passover

Visibility (miles)

6
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

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

Precipitation Probability (%)

65
44
33
24
15
10
19
22
16
14
2
0
1
1
1
2
1
1
1
1
2
5
18
50

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
11
10
11
9
7
6
5
4
4
4
4
4
5
5
5
5
5
5
5
8
9
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
10
10
10
11
12
12
12
12
12
12
10
10
10
9
8
8
7
6
7
7
7
9
9

Dew Point (°C)

6
5
5
5
7
8
9
9
10
10
9
9
9
8
8
8
7
7
7
8
8
8
9
8

Relative Humidity (%)

67
58
55
53
59
64
69
73
78
83
88
90
93
93
95
95
95
96
95
93
90
84
79
71

Pressure (mb)

1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

418
421
421
421
421
419
412
411
410
400
395
393
392
387
385
380
376
373
372
370
370
370
368
369

Tuesday 19

Waxing Crescent 12%

08:36

01:31

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:39, Set: 21:36, Transit: 13:38. Moon - Rise: 08:36, Set: 01:31. Civil Dark: 22:19 - 04:55. Nautical Dark: 23:21 - 03:53. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
98
100
100
100
100
100
100
99
89
91
89
92
99
98
100
82
100
91
96
77
81
99
95

Low Clouds (% Sky Obscured)

83
76
92
84
91
100
86
94
77
63
62
49
66
71
79
89
65
56
69
70
64
67
70
66

Medium Clouds (% Sky Obscured)

100
95
99
100
100
80
83
100
90
76
69
53
50
52
35
40
40
43
51
50
50
49
46
42

High Clouds (% Sky Obscured)

5
57
99
9
12
95
100
100
3
0
5
0
5
81
40
47
66
100
80
90
50
33
80
80

ISS Passover

Visibility (miles)

8
9
9
8
7
8
9
9
9
9
8
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
None
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

55
51
60
78
83
76
81
48
12
35
30
20
6
6
4
6
5
5
11
18
22
28
38
45

Precipitation Amount (mm)

0.2
0
0.2
0.5
0.5
0.3
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
7
8
11
11
12
12
11
11
12
12
12
12
12
12
12
12
12
11
11
11
11
11
12

Relative Humidity (%)

75
65
68
83
90
93
93
92
90
92
93
95
96
93
95
92
93
95
93
92
89
82
78
80

Pressure (mb)

1014
1013
1013
1013
1013
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1014
1014
1015
1015
1016
1016
1017
1017
1018

Ozone (du)

371
372
376
381
388
384
381
382
383
385
388
389
386
387
386
382
383
383
380
380
378
377
375
371

Wednesday 20

Waxing Crescent 21%

10:06

02:06

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:37, Set: 21:37, Transit: 13:38. Moon - Rise: 10:06, Set: 02:06. Civil Dark: 22:21 - 04:53. Nautical Dark: 23:24 - 03:50. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

91
87
79
72
66
63
60
58
69
82
87
92
89
86
90
89
91
89
86
84
85
87
83
85

Low Clouds (% Sky Obscured)

62
55
49
38
34
26
17
14
20
28
33
41
51
58
55
52
46
53
61
68
70
72
74
68

Medium Clouds (% Sky Obscured)

50
30
41
25
26
63
60
58
37
72
75
89
71
76
80
78
73
82
62
28
74
34
35
31

High Clouds (% Sky Obscured)

76
70
70
65
50
40
40
30
25
15
2
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
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 (%)

46
45
50
49
47
35
25
0
2
4
3
8
10
7
13
9
3
7
5
3
3
2
2
2

Precipitation Amount (mm)

0
0
0.2
0.2
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)

14
15
17
17
17
16
15
13
13
12
11
10
9
8
8
7
7
7
7
7
7
9
9
9

Chance of Frost

Temperature (°C)

15
16
16
17
17
17
17
16
16
15
15
14
14
13
13
13
13
13
13
13
14
15
16
17

Feels Like (°C)

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

Dew Point (°C)

12
12
11
11
11
11
11
11
11
11
11
11
11
11
11
12
12
12
11
11
11
10
10
10

Relative Humidity (%)

82
77
72
68
66
67
66
71
72
74
79
80
83
86
89
92
93
93
92
89
82
70
65
60

Pressure (mb)

1018
1018
1019
1019
1020
1020
1020
1020
1021
1021
1022
1022
1022
1022
1023
1023
1023
1023
1023
1024
1024
1025
1025
1026

Ozone (du)

365
363
362
361
359
358
355
351
348
346
343
342
342
340
340
340
338
337
337
335
333
333
334
334

Thursday 21

Waxing Crescent 31%

11:34

02:29

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:36, Set: 21:39, Transit: 13:38. Moon - Rise: 11:34, Set: 02:29. Civil Dark: 22:23 - 04:52. Nautical Dark: 23:26 - 03:48. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

74
83
83
82
74
83
87
90
82
75
64
69
77
83
80
78
81
87
86
86
90
95
100
90

Low Clouds (% Sky Obscured)

62
60
59
60
58
60
56
55
47
37
29
31
35
39
40
41
43
43
44
45
48
51
55
55

Medium Clouds (% Sky Obscured)

28
29
29
25
23
30
41
47
42
34
25
31
38
41
42
32
22
11
7
7
6
5
11
15

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
11
18
23
46
70
83
67
33
0
0
0
0
33
67
100
68

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 (%)

3
0
0
1
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
9
8
7
7
6
5
5
5
5
4
5
5
5
4
4
4
4
4
5
6
6
6

Chance of Frost

Temperature (°C)

18
19
20
20
21
21
21
21
19
17
16
15
15
14
14
14
13
13
14
15
16
17
19
21

Feels Like (°C)

17
18
18
19
20
21
20
20
20
17
16
16
15
15
15
14
15
14
14
14
13
17
18
18

Dew Point (°C)

10
10
10
10
10
10
11
11
12
12
12
11
11
12
12
11
11
11
11
11
11
11
11
11

Relative Humidity (%)

57
54
51
50
48
48
51
55
63
72
75
78
80
86
86
86
87
87
83
79
74
66
60
54

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1028
1028
1028
1028
1028

Ozone (du)

333
333
333
333
333
333
331
329
329
330
329
330
329
327
328
327
326
325
325
325
325
325
325
326

Friday 22

Waxing Crescent 42%

No Rise

02:45

12 Bad
13 Bad
14 Bad
15 OK
16 OK
17 OK
18 Good
19 Good
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 Good

Sun - Rise: 05:35, Set: 21:40, Transit: 13:38. Moon - Rise: No Rise, Set: 02:45. Civil Dark: 22:25 - 04:50. Nautical Dark: 23:28 - 03:46. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

73
60
55
48
35
25
14
3
2
2
2
4
7
15
16
12
8
7
4
1
2
3
4
13

Low Clouds (% Sky Obscured)

54
54
46
38
30
20
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

16
15
15
15
15
10
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

36
4
3
2
2
3
4
3
2
2
2
4
7
15
16
9
2
1
0
1
1
2
3
13

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)

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

Chance of Frost

Temperature (°C)

22
23
24
24
24
24
24
23
22
21
19
18
17
17
16
16
15
14
15
16
17
19
21
23

Feels Like (°C)

19
19
20
25
24
23
24
24
24
22
22
22
22
21
20
15
15
15
15
14
14
19
20
21

Dew Point (°C)

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

Relative Humidity (%)

49
46
43
41
40
38
44
51
58
64
70
76
77
77
77
78
79
79
78
77
77
68
60
53

Pressure (mb)

1028
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

326
326
326
326
326
326
326
327
327
327
327
327
328
329
330
332
333
335
334
332
331
331
331
332

Saturday 23

First Quarter 53%

12:58

02:58

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

Sun - Rise: 05:34, Set: 21:42, Transit: 13:38. Moon - Rise: 12:58, Set: 02:58. Civil Dark: 22:26 - 04:49. Nautical Dark: 23:31 - 03:44. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

24
30
24
18
13
21
27
34
32
28
19
16
15
14
39
63
89
81
75
67

Low Clouds (% Sky Obscured)

0
0
0
0
0
3
3
3
3
1
0
0
0
0
8
14
22
16
11
6

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
7

High Clouds (% Sky Obscured)

24
30
24
18
10
13
17
19
20
24
19
16
15
14
38
55
73
53
33
31

ISS Passover

Visibility (miles)

9
9
9
8
6
4
4
4
4
6
8
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 (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

25
26
27
27
27
27
25
24
23
21
20
19
18
17
17
17
17
17
17
17

Feels Like (°C)

23
23
24
29
28
27
27
27
27
23
22
22
22
21
20
18
19
19
18
17

Dew Point (°C)

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

Relative Humidity (%)

48
44
40
39
38
36
42
48
55
60
66
70
73
74
76
74
76
75
73
70

Pressure (mb)

1025
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

330
329
328
328
328
328
327
327
326
327
328
329
329
328
328
328
329
329
329
330

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

Generated: 17/05/26 12:03:28. Forecast: 17/05/26 to 23/05/26. Timezone: UTC+2.00