Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 14

Waxing Crescent 13%

11:28

20:35

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: 07:15, Set: 19:59, Transit: 13:37. Moon - Rise: 11:28, Set: 20:35. Civil Dark: 20:33 - 06:41. Nautical Dark: 21:14 - 06:00. Astro Dark: 21:57 - 05:17

Total Clouds (% Sky Obscured)

89
98
88
98
99
99
97
96
98
63
57
54
52
47
55
58
55
52
57
49
83
77
80
49

Low Clouds (% Sky Obscured)

43
35
36
31
59
95
94
89
75
46
32
37
29
27
24
19
21
14
15
41
68
71
71
47

Medium Clouds (% Sky Obscured)

9
3
6
4
4
11
7
20
23
12
14
13
10
18
21
30
23
23
24
8
16
4
5
1

High Clouds (% Sky Obscured)

87
60
39
92
96
91
50
56
66
3
2
0
2
0
0
0
0
0
1
1
1
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
52
59
52
70
95
95
24
11
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
1
2
8
23
26
17
12
6
3
0
0
2
1
5
18
24
11
9
4
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)

3
4
4
5
5
6
6
7
7
8
10
11
12
11
10
7
6
6
6
5
6
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
95
95
96
95
95
92
86
72
65
61
62
67
70
76
88
89
91
92
92
88
89
89

Pressure (mb)

1023
1023
1023
1022
1023
1023
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1020
1020
1020
1019
1019

Ozone (du)

284
284
284
283
283
282
283
284
284
283
281
279
279
282
286
289
290
291
293
293
288
285
282
280

Tuesday 15

Waxing Crescent 21%

12:46

20:53

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

Sun - Rise: 07:17, Set: 19:56, Transit: 13:37. Moon - Rise: 12:46, Set: 20:53. Civil Dark: 20:30 - 06:43. Nautical Dark: 21:11 - 06:02. Astro Dark: 21:54 - 05:19

Total Clouds (% Sky Obscured)

44
38
45
41
48
57
41
71
88
100
100
100
100
82
78
99
80
64
27
0
56
69
48
79

Low Clouds (% Sky Obscured)

44
38
45
41
45
53
29
27
19
22
28
36
45
30
44
93
41
31
0
0
47
45
31
24

Medium Clouds (% Sky Obscured)

0
0
0
1
6
7
5
9
88
84
47
19
11
12
32
99
11
9
7
0
7
11
11
25

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
27
36
100
100
100
99
67
23
0
0
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
7
9
9
9
9
9
9
9
9

Fog (%)

9
30
72
41
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
3
11
22
49
43
52
59
36
9
2
15
11
22
24

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
7
6
7
7
8
10
11
12
13
13
14
14
13
13
11
9
9
7
7
5
5
5
5

Chance of Frost

Temperature (°C)

18
18
17
17
17
18
20
21
23
24
24
23
22
21
21
20
19
18
17
16
16
15
15
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
95
93
92
86
77
70
65
62
63
62
63
64
74
78
80
77
78
77
77
74
70
71

Pressure (mb)

1019
1018
1018
1017
1017
1017
1017
1017
1016
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

279
278
277
278
282
287
287
285
285
285
284
283
283
285
290
297
303
304
306
309
311
314
316
317

Wednesday 16

Waxing Crescent 30%

14:02

21:18

04 Bad
05 OK
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: 07:18, Set: 19:54, Transit: 13:36. Moon - Rise: 14:02, Set: 21:18. Civil Dark: 20:28 - 06:44. Nautical Dark: 21:09 - 06:04. Astro Dark: 21:52 - 05:21

Total Clouds (% Sky Obscured)

66
8
33
63
86
89
68
72
74
70
45
76
86
86
90
78
59
75
79
76
89
98
98
97

Low Clouds (% Sky Obscured)

34
6
29
45
79
84
49
51
60
60
45
62
71
73
80
62
46
64
62
68
47
27
32
49

Medium Clouds (% Sky Obscured)

14
0
0
14
11
8
29
16
12
11
0
9
11
10
9
11
7
10
12
10
11
18
21
25

High Clouds (% Sky Obscured)

1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
80
94
71
47

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

27
25
30
59
82
82
85
92
85
62
40
37
54
67
63
46
34
33
34
40
26
20
27
28

Precipitation Amount (mm)

0
0
0
0.2
0.7
0.7
0.7
0.8
0.7
0.4
0
0
0.3
0.5
0.4
0
0
0
0
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
70
71
73
75
74
74
73
73
67
63
59
61
68
69
72
75
76
79
82
82
83
84
86

Pressure (mb)

1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015
1015
1016
1016
1016
1016
1016
1015
1014
1014

Ozone (du)

318
319
320
321
323
325
327
328
330
329
331
332
332
333
332
333
335
332
325
321
319
316
313
311

Thursday 17

Waxing Crescent 39%

15:13

21:52

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: 07:20, Set: 19:52, Transit: 13:36. Moon - Rise: 15:13, Set: 21:52. Civil Dark: 20:26 - 06:46. Nautical Dark: 21:06 - 06:06. Astro Dark: 21:49 - 05:23

Total Clouds (% Sky Obscured)

96
97
99
100
100
100
100
100
100
100
100
100
100
96
92
90
85
81
77
80
80
80
77
56

Low Clouds (% Sky Obscured)

57
50
70
39
41
73
66
62
92
69
87
97
98
92
85
76
46
48
34
30
31
33
34
31

Medium Clouds (% Sky Obscured)

21
16
81
97
97
99
99
99
100
88
100
100
100
96
92
27
10
11
14
55
48
73
72
34

High Clouds (% Sky Obscured)

28
52
79
100
100
100
100
100
100
100
78
57
35
39
40
50
50
45
40
40
35
35
30
4

ISS Passover

Visibility (miles)

7
9
5
8
9
5
9
9
9
9
9
8
9
4
4
3
5
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

19
41
43
31
38
36
23
16
22
36
59
80
95
95
95
95
77
55
41
23
12
14
8
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.5
1.1
1.2
1.1
1.1
0.4
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
6
6
6
6
8
9
12
14
13
14
12
13
13
13
13
11
8
6
5
5
5
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
92
86
87
82
78
71
62
59
62
63
66
75
78
85
90
86
87
89
84
82
80
76

Pressure (mb)

1013
1013
1013
1012
1012
1012
1012
1011
1011
1011
1010
1009
1009
1008
1008
1007
1007
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

311
311
309
309
311
310
309
307
307
306
305
306
305
303
303
304
305
306
306
307
307
306
307
308

Friday 18

First Quarter 49%

16:13

22:38

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: 07:22, Set: 19:49, Transit: 13:35. Moon - Rise: 16:13, Set: 22:38. Civil Dark: 20:23 - 06:48. Nautical Dark: 21:04 - 06:07. Astro Dark: 21:46 - 05:25

Total Clouds (% Sky Obscured)

47
54
55
61
55
50
45
47
50
49
59
66
80
98
99
100
91
92
93
94
95
96
96
97

Low Clouds (% Sky Obscured)

30
28
29
34
30
33
37
36
41
41
38
36
46
70
70
72
56
56
58
65
70
66
62
64

Medium Clouds (% Sky Obscured)

12
10
13
12
9
6
4
4
2
0
3
4
6
8
13
86
59
32
6
5
5
4
11
17

High Clouds (% Sky Obscured)

2
6
0
0
0
0
0
4
10
15
34
57
76
79
90
92
39
37
34
54
73
91
90
92

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 (%)

19
17
17
19
28
29
29
29
28
24
23
9
18
6
20
6
6
5
1
9
12
12
28
41

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)

6
6
6
6
6
7
10
12
12
13
13
13
12
12
10
9
7
7
8
8
9
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
76
77
79
80
76
70
66
60
58
55
54
56
60
65
63
59
60
61
64
67
70
76
80

Pressure (mb)

1008
1008
1009
1009
1009
1010
1010
1011
1011
1012
1012
1012
1012
1013
1012
1013
1013
1012
1012
1011
1011
1011
1011
1011

Ozone (du)

308
310
313
313
311
311
308
303
300
300
301
301
302
298
296
296
302
301
300
299
299
299
299
300

Saturday 19

Waxing Gibbous 59%

17:00

23:36

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: 07:23, Set: 19:47, Transit: 13:35. Moon - Rise: 17:00, Set: 23:36. Civil Dark: 20:21 - 06:50. Nautical Dark: 21:01 - 06:09. Astro Dark: 21:43 - 05:27

Total Clouds (% Sky Obscured)

98
97
97
97
98
99
100
98
97
95
88
80
72
77
79
80
86
92
98
95
93
90
91
92

Low Clouds (% Sky Obscured)

69
71
71
72
80
87
95
85
75
66
54
42
31
26
22
17
19
21
22
34
45
53
47
39

Medium Clouds (% Sky Obscured)

23
23
24
24
42
60
78
82
83
86
71
58
47
35
21
7
6
6
5
17
29
41
45
51

High Clouds (% Sky Obscured)

94
88
82
78
84
91
97
97
97
95
83
71
66
72
75
76
83
90
97
80
64
51
55
51

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

50
59
60
61
71
80
85
83
69
43
38
33
27
26
21
16
25
34
44
42
40
34
30
23

Precipitation Amount (mm)

0
0.2
0
0
0.3
0.4
0.4
0.6
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
12
11
11
13
13
13
13
13
14
18
17
18
18
18
19
16
16
17
16
16
16
17

Dew Point (°C)

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

Relative Humidity (%)

83
89
86
83
82
82
81
79
81
81
82
78
75
72
77
81
85
86
89
90
89
89
87
87

Pressure (mb)

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

Ozone (du)

300
300
299
299
298
298
297
297
297
297
298
297
297
296
295
294
293
293
292
291
290
288
287
284

Sunday 20

Waxing Gibbous 68%

17:35

00:45

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

Sun - Rise: 07:25, Set: 19:45, Transit: 13:35. Moon - Rise: 17:35, Set: 00:45. Civil Dark: 20:18 - 06:51. Nautical Dark: 20:59 - 06:11. Astro Dark: 21:41 - 05:29

Total Clouds (% Sky Obscured)

93
93
93
94
96
98
100
98
97
96
98
99
100
100
99
99
99
100
100
98
96
93

Low Clouds (% Sky Obscured)

31
36
41
47
55
63
71
63
57
53
48
46
45
58
72
87
90
94
98
84
69
56

Medium Clouds (% Sky Obscured)

56
62
71
77
83
88
95
77
56
37
32
27
17
26
35
44
41
34
27
22
18
13

High Clouds (% Sky Obscured)

40
37
37
38
49
56
66
60
54
43
60
78
98
96
95
91
68
47
26
38
42
46

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

Fog (%)

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

Precipitation Probability (%)

3
10
13
17
15
12
2
11
15
17
36
55
73
95
95
95
95
95
95
95
73
19

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
1
1.5
2.1
1.8
1.5
1.1
1
0.5
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
85
83
80
74
68
64
61
58
55
56
56
57
60
63
66
66
67
68
70
73

Pressure (mb)

1018
1019
1019
1020
1020
1021
1021
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

281
278
278
278
277
277
277
277
276
276
276
276
276
276
276
276
276
277
278
279
278
278

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

Generated: 14/09/26 04:19:41. Forecast: 14/09/26 to 20/09/26. Timezone: UTC+2.00