Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 16

Waxing Crescent 27%

12:33

22:02

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:29, Set: 21:04, Transit: 13:45. Moon - Rise: 12:33, Set: 22:02. Civil Dark: 21:42 - 05:52. Nautical Dark: 22:30 - 05:03. Astro Dark: 23:29 - 04:06

Total Clouds (% Sky Obscured)

99
99
100
98
89
94
100
100
100
100
100
100
95
99
85
99
100
100
100
91
100
100
99
84

Low Clouds (% Sky Obscured)

7
9
7
12
15
26
44
39
26
76
82
89
86
75
76
94
100
100
95
87
52
63
73
67

Medium Clouds (% Sky Obscured)

90
95
84
38
38
54
91
100
100
100
100
100
58
88
26
24
34
33
30
33
40
40
40
25

High Clouds (% Sky Obscured)

62
81
78
97
89
36
100
100
100
100
100
50
9
0
0
0
0
45
18
6
35
46
33
19

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
2
4
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
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

17
3
0
0
0
2
11
26
53
95
95
95
46
14
14
24
22
19
5
3
3
3
3
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.9
2.3
1.7
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
7
7
6
5
3
2
2
2
1
4
5
2
4
3
5
6
8
9
9
9
10
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
51
54
65
71
73
74
73
71
74
77
93
95
95
90
82
82
73
67
60
58
56
53
52

Pressure (mb)

1017
1016
1016
1016
1017
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

330
335
333
332
332
332
332
335
332
335
329
332
341
345
344
343
339
334
331
329
326
324
319
317

Monday 17

Waxing Crescent 25%

13:51

22:14

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:31, Set: 21:02, Transit: 13:45. Moon - Rise: 13:51, Set: 22:14. Civil Dark: 21:39 - 05:53. Nautical Dark: 22:28 - 05:06. Astro Dark: 23:25 - 04:09

Total Clouds (% Sky Obscured)

96
90
92
80
59
62
62
98
87
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

53
40
29
22
21
15
26
27
25
81
84
92
94
86
94
85
100
100
100
100
91
94
71
80

Medium Clouds (% Sky Obscured)

73
72
86
65
27
26
28
96
70
100
100
100
100
100
91
35
42
34
26
42
49
26
27
86

High Clouds (% Sky Obscured)

50
18
13
10
39
45
11
20
60
100
100
100
100
52
58
100
58
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
4
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
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
0
0
0
0
0
0
2
10
43
95
95
82
47
44
23
22
24
27
26
33
25
25
30

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.8
1
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
9
5
3
3
2
2
4
4
4
4
2
5
6
7
8
7
12
12
13
12
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
11
12
12
13
13
13
13
12
12
12
13
14
15
15
16
17
16
16
16
16
15
16

Relative Humidity (%)

55
57
61
71
74
79
81
81
83
79
77
77
82
92
93
92
90
92
80
77
79
77
70
74

Pressure (mb)

1016
1016
1015
1015
1016
1015
1015
1015
1015
1014
1013
1012
1012
1011
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009

Ozone (du)

313
311
311
310
310
312
310
308
307
305
304
305
305
311
315
319
319
319
320
319
318
317
315
313

Tuesday 18

Waxing Crescent 36%

15:07

22:30

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:33, Set: 21:00, Transit: 13:45. Moon - Rise: 15:07, Set: 22:30. Civil Dark: 21:37 - 05:55. Nautical Dark: 22:25 - 05:08. Astro Dark: 23:22 - 04:12

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
100
100
100
100
100
94
90
81
80
80
80
80
80
54
64
40
32
29

Low Clouds (% Sky Obscured)

83
19
24
25
22
27
31
80
78
71
23
23
31
25
30
25
32
23
36
51
64
33
23
18

Medium Clouds (% Sky Obscured)

93
100
93
100
90
96
100
100
100
100
48
37
40
23
18
13
16
10
32
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
86
100
100
100
100
100
93
86
45
75
70
75
80
80
0
0
0
0
0

ISS Passover

Visibility (miles)

9
8
8
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

48
57
36
31
7
7
7
8
3
13
18
15
8
6
4
2
2
6
11
25
26
31
33
34

Precipitation Amount (mm)

0.2
0.3
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
8
6
5
5
5
4
4
3
3
7
6
5
6
6
9
10
11
11
12
13
13
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
20
19
19
18
18
19
19
18
18
16
16
16
16
18
18
19
20
20
20
20
19
19
20

Dew Point (°C)

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

Relative Humidity (%)

77
76
80
82
82
80
81
80
78
78
77
77
78
78
71
61
54
50
48
45
46
48
49
47

Pressure (mb)

1008
1008
1008
1008
1008
1008
1008
1007
1007
1007
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1006
1006

Ozone (du)

312
311
310
310
311
311
310
311
310
313
315
319
320
322
324
329
334
338
339
340
344
350
351
348

Wednesday 19

Waxing Crescent 46%

16:20

22:50

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

Sun - Rise: 06:34, Set: 20:57, Transit: 13:45. Moon - Rise: 16:20, Set: 22:50. Civil Dark: 21:35 - 05:57. Nautical Dark: 22:22 - 05:10. Astro Dark: 23:18 - 04:15

Total Clouds (% Sky Obscured)

28
27
37
50
60
59
53
53
57
68
83
82
81
61
53
49
50
52
61
54
56
53
51
53

Low Clouds (% Sky Obscured)

18
17
16
19
17
22
27
32
38
58
83
72
45
40
36
32
28
30
29
30
26
25
24
22

Medium Clouds (% Sky Obscured)

0
0
10
20
31
24
28
27
22
9
0
61
81
34
7
6
12
13
38
22
28
27
29
32

High Clouds (% Sky Obscured)

0
0
27
50
60
50
22
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
4
24

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

27
11
32
39
42
62
61
40
67
67
38
70
77
69
74
61
62
57
61
64
71
74
63
53

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.4
0.3
0
0.4
0.5
0.3
0.5
0.3
0.3
0
0.2
0.3
0.3
0.3
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
43
49
55
55
64
68
72
74
77
76
68
70
80
86
81
76
72
61
56
52
57
64
62

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006

Ozone (du)

346
345
348
350
353
354
354
353
353
353
352
352
350
348
349
351
350
350
350
353
355
355
354
354

Thursday 20

First Quarter 56%

17:27

23:18

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:36, Set: 20:55, Transit: 13:45. Moon - Rise: 17:27, Set: 23:18. Civil Dark: 21:32 - 05:59. Nautical Dark: 22:20 - 05:12. Astro Dark: 23:15 - 04:18

Total Clouds (% Sky Obscured)

53
59
65
67
59
60
58
54
55
52
58
66
71
64
83
87
92
81
70
59
55
54
49
56

Low Clouds (% Sky Obscured)

20
21
24
29
31
21
11
2
14
26
39
52
45
60
81
85
89
70
52
34
32
29
26
33

Medium Clouds (% Sky Obscured)

39
40
42
38
34
40
45
50
43
30
31
43
59
60
73
64
55
41
29
17
22
23
24
29

High Clouds (% Sky Obscured)

42
59
65
67
59
55
50
45
40
40
38
25
14
0
0
0
0
3
6
9
20
32
43
48

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

53
42
52
51
49
62
64
66
73
79
73
82
83
73
75
67
53
57
58
52
61
64
63
79

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.2
0.3
0.3
0.3
0.3
0.6
0.7
0.6
0.4
0.3
0
0
0
0
0.2
0.2
0
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
53
56
64
67
69
74
75
77
82
87
89
92
90
87
82
78
74
62
53
45
48
50
54

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1005
1005
1006
1006
1006
1007
1007
1007
1008
1008
1008
1008
1009
1009

Ozone (du)

353
353
353
354
353
353
354
355
354
352
352
350
349
348
347
347
347
347
348
348
348
348
349
349

Friday 21

Waxing Gibbous 66%

No Rise

23:56

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:38, Set: 20:53, Transit: 13:44. Moon - Rise: No Rise, Set: 23:56. Civil Dark: 21:30 - 06:01. Nautical Dark: 22:17 - 05:14. Astro Dark: 23:12 - 04:20

Total Clouds (% Sky Obscured)

67
78
68
56
45
45
45
45
52
55
62
67
68
67
72
78
85
81
77
73
73
71
66
57

Low Clouds (% Sky Obscured)

44
54
51
48
45
35
25
16
15
17
16
30
43
57
61
66
74
76
77
73
73
71
66
57

Medium Clouds (% Sky Obscured)

32
35
21
11
1
6
13
21
27
33
39
28
19
12
11
14
15
11
8
4
19
34
52
36

High Clouds (% Sky Obscured)

52
55
41
20
2
11
21
36
36
39
44
31
15
0
0
0
0
2
4
9
8
10
10
8

ISS Passover

Visibility (miles)

7
8
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

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

Precipitation Probability (%)

75
58
49
35
9
30
43
54
61
60
50
52
43
12
17
15
8
13
12
7
12
11
2
6

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
17
16
16
15
14
14
14
14
14
14
14
15
15
16
17
18
18
18
19
19
19
20

Feels Like (°C)

18
18
18
15
15
15
15
14
14
14
14
14
14
13
13
15
15
15
16
16
16
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

55
57
60
61
61
62
63
64
65
67
68
69
64
61
56
54
50
47
46
46
46
45
43
42

Pressure (mb)

1010
1010
1010
1011
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1015
1015
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

348
348
347
348
349
349
349
349
349
349
348
348
348
349
350
346
342
339
337
334
332
331
330
329

Saturday 22

Waxing Gibbous 75%

18:22

00:47

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

Sun - Rise: 06:39, Set: 20:51, Transit: 13:44. Moon - Rise: 18:22, Set: 00:47. Civil Dark: 21:28 - 06:03. Nautical Dark: 22:14 - 05:16. Astro Dark: 23:08 - 04:23

Total Clouds (% Sky Obscured)

45
31
40
48
56
52
47
43
51
59
67
55
44
33
45
55
64
59
54
48

Low Clouds (% Sky Obscured)

41
22
33
44
55
49
44
38
32
25
18
19
19
18
29
40
50
49
48
48

Medium Clouds (% Sky Obscured)

21
4
3
1
0
0
0
0
5
11
16
15
19
15
15
13
10
7
3
0

High Clouds (% Sky Obscured)

7
6
7
9
11
13
14
16
22
30
38
26
15
2
2
1
0
0
1
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

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 (%)

6
3
7
10
8
23
25
11
26
21
13
29
15
9
19
12
10
13
12
10

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

Chance of Frost

Temperature (°C)

19
18
17
16
16
15
15
14
14
14
14
13
14
14
14
15
17
18
19
19

Feels Like (°C)

18
18
19
16
15
15
15
15
15
13
13
13
13
13
12
14
15
16
17
18

Dew Point (°C)

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

Relative Humidity (%)

45
48
52
55
56
60
63
69
73
75
76
79
76
75
73
64
56
49
49
49

Pressure (mb)

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

Ozone (du)

329
330
331
332
332
333
332
331
331
332
333
334
336
338
339
339
339
339
339
340

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

Generated: 16/08/26 18:55:45. Forecast: 16/08/26 to 22/08/26. Timezone: UTC+2.00