Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

00:10

18:10

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:19, Set: 19:53, Transit: 13:36. Moon - Rise: 00:10, Set: 18:10. Civil Dark: 20:27 - 06:45. Nautical Dark: 21:07 - 06:05. Astro Dark: 21:50 - 05:22

Total Clouds (% Sky Obscured)

58
62
66
83
72
78
77
69
44
57
63
98
98
82
87
70
100
100
100
100
100
100
100
82

Low Clouds (% Sky Obscured)

58
62
66
67
65
66
69
69
44
57
58
70
70
66
58
50
50
62
53
47
24
21
24
47

Medium Clouds (% Sky Obscured)

26
32
30
28
9
31
7
0
0
0
3
54
93
78
41
24
21
20
57
32
25
39
37
43

High Clouds (% Sky Obscured)

0
1
1
0
0
0
0
0
0
0
0
6
0
0
0
0
75
75
70
75
81
100
100
47

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

95
95
74
61
52
45
31
27
30
27
31
44
66
69
60
42
27
35
53
37
10
5
6
15

Precipitation Amount (mm)

1.2
1
0.5
0.2
0
0
0
0
0
0
0
0
0.2
0.4
0.2
0
0
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

25
24
23
22
23
22
21
19
18
19
19
19
19
18
19
19
18
16
16
16
14
12
10
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
10
11
11
11
10
11
10
10
10
10
11
10
11
11
13
13
13
13
14
14
13
13

Dew Point (°C)

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

Relative Humidity (%)

83
83
83
83
83
85
82
82
76
74
70
69
66
75
72
66
62
62
64
72
72
72
69
68

Pressure (mb)

1007
1007
1008
1008
1009
1009
1010
1010
1011
1011
1012
1013
1013
1014
1014
1015
1016
1016
1016
1017
1017
1017
1017
1018

Ozone (du)

298
299
299
301
301
302
303
306
303
303
308
310
309
307
307
303
303
302
303
302
295
289
285
282

Tuesday 16

Waning Crescent 20%

01:31

18:36

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:20, Set: 19:51, Transit: 13:35. Moon - Rise: 01:31, Set: 18:36. Civil Dark: 20:24 - 06:47. Nautical Dark: 21:05 - 06:06. Astro Dark: 21:47 - 05:24

Total Clouds (% Sky Obscured)

100
99
100
99
100
100
100
100
100
100
100
99
100
100
100
100
100
98
99
93
70
84
81
79

Low Clouds (% Sky Obscured)

39
50
51
48
48
48
46
53
77
88
83
85
92
95
98
100
100
96
98
93
58
62
60
59

Medium Clouds (% Sky Obscured)

45
18
43
76
71
71
87
100
99
100
93
98
100
100
100
100
97
82
60
50
69
78
69
61

High Clouds (% Sky Obscured)

100
98
100
95
100
100
100
100
100
100
100
20
61
0
0
0
0
0
0
2
0
0
15
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

9
15
4
10
11
36
60
66
82
90
85
67
79
95
65
35
34
35
61
41
38
17
25
11

Precipitation Amount (mm)

0
0
0
0
0
0
0.4
0.3
0.6
0.8
0.4
0
0.4
0.9
0
0
0
0
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
11
10
10
10
10
10
10
10
10
9
11
13
13
13
13
13
13
13
16
16
17
17
17

Relative Humidity (%)

73
78
79
75
78
75
76
76
79
78
71
84
90
93
93
87
82
81
82
90
92
92
92
92

Pressure (mb)

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

Ozone (du)

278
274
270
267
264
261
259
256
254
253
252
250
250
249
249
248
250
251
255
255
257
257
258
259

Wednesday 17

Waning Crescent 12%

02:55

18:54

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
18 Bad
19 Bad
20 OK
21 OK
22 OK

Sun - Rise: 07:22, Set: 19:48, Transit: 13:35. Moon - Rise: 02:55, Set: 18:54. Civil Dark: 20:22 - 06:48. Nautical Dark: 21:02 - 06:08. Astro Dark: 21:44 - 05:26

Total Clouds (% Sky Obscured)

85
82
70
64
60
65
71
81
88
80
66
73
92
83
76
83
84
79
63
73
66
48
32
20

Low Clouds (% Sky Obscured)

69
64
70
63
60
65
71
70
66
70
66
60
58
63
66
82
84
79
59
70
62
47
32
19

Medium Clouds (% Sky Obscured)

62
70
16
0
0
0
0
20
48
11
0
17
41
29
40
29
30
27
23
18
22
15
8
4

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

9
7
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
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 (%)

62
37
14
16
7
0
0
0
1
0
0
0
0
0
0
0
0
0
4
1
0
0
0
0

Precipitation Amount (mm)

0.6
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)

13
12
11
12
12
11
11
12
12
11
11
13
15
16
16
16
16
15
14
11
10
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
92
92
93
93
93
95
93
95
90
86
76
67
62
63
62
61
64
67
71
77
78
78

Pressure (mb)

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

Ozone (du)

259
258
258
258
259
258
258
256
256
256
256
256
255
255
256
257
257
257
258
258
258
257
257
257

Thursday 18

Waning Crescent 6%

04:18

19:08

23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 OK
07 OK
08 OK
09 OK
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

Sun - Rise: 07:24, Set: 19:46, Transit: 13:35. Moon - Rise: 04:18, Set: 19:08. Civil Dark: 20:20 - 06:50. Nautical Dark: 21:00 - 06:10. Astro Dark: 21:42 - 05:28

Total Clouds (% Sky Obscured)

41
61
82
77
72
68
56
43
27
32
37
45
52
63
74
80
84
90
82
72
64
56
49
48

Low Clouds (% Sky Obscured)

22
24
27
27
26
23
23
26
27
19
11
3
6
9
12
9
7
4
3
1
0
0
0
0

Medium Clouds (% Sky Obscured)

8
11
15
16
16
17
12
7
3
3
3
3
1
0
0
0
0
0
0
0
0
6
29
48

High Clouds (% Sky Obscured)

22
37
43
37
34
34
31
19
3
13
27
40
46
53
59
67
75
83
75
67
60
40
20
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)

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

Chance of Frost

Temperature (°C)

18
17
17
16
16
15
15
15
15
15
16
19
21
23
24
26
26
27
27
26
24
23
23
22

Feels Like (°C)

19
18
18
17
17
16
16
15
15
15
16
17
18
21
23
23
24
25
25
26
24
22
22
20

Dew Point (°C)

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

Relative Humidity (%)

81
85
86
87
87
86
85
83
83
79
60
49
44
41
41
38
33
33
34
40
44
45
46
47

Pressure (mb)

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

Ozone (du)

256
256
255
254
253
252
251
251
252
252
253
253
252
253
253
254
255
255
255
254
254
254
254
255

Friday 19

Waning Crescent 2%

05:36

19:19

23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 OK
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

Sun - Rise: 07:25, Set: 19:44, Transit: 13:34. Moon - Rise: 05:36, Set: 19:19. Civil Dark: 20:17 - 06:52. Nautical Dark: 20:57 - 06:12. Astro Dark: 21:39 - 05:30

Total Clouds (% Sky Obscured)

67
85
100
75
50
20
40
64
96
93
91
85
88
93
95
97
98
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
4
9
12
7
4
4
0
28
55
83
82
82
81

Medium Clouds (% Sky Obscured)

66
69
71
62
49
20
27
37
58
53
53
44
47
67
85
83
87
91
97
99
100
100
100
100

High Clouds (% Sky Obscured)

33
67
100
67
33
0
33
64
95
86
77
64
67
75
81
87
94
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
2
5
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

1
1
0
0
0
0
0
0
0
0
0
0
4
4
20
77
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.8
1
0.7
0.7
0.7
1.3
1.4
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
56
54
58
62
64
70
79
85
89
83
81
75
73
72
77
84
88
95
93
93
93
90
87

Pressure (mb)

1016
1015
1015
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1012
1012
1013
1013
1013
1013

Ozone (du)

255
256
256
257
257
257
258
258
258
259
259
259
258
257
256
258
258
259
259
260
262
264
265
266

Saturday 20

Waning Crescent 0%

06:52

19:28

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:27, Set: 19:41, Transit: 13:34. Moon - Rise: 06:52, Set: 19:28. Civil Dark: 20:15 - 06:53. Nautical Dark: 20:55 - 06:13. Astro Dark: 21:36 - 05:32

Total Clouds (% Sky Obscured)

100
99
98
98
99
100
100
100
100
93
86
82
82
88
88
88
84
81
77
76
75
79
87
94

Low Clouds (% Sky Obscured)

65
49
34
40
44
48
52
57
59
67
83
82
82
86
86
87
84
81
67
54
46
56
66
76

Medium Clouds (% Sky Obscured)

74
61
43
42
40
43
45
47
54
54
50
50
46
47
47
46
40
39
49
53
42
33
19
2

High Clouds (% Sky Obscured)

100
99
98
98
99
100
97
94
93
87
81
75
70
65
70
85
84
81
77
76
75
79
77
69

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
8
7
8
8
9
9
9
9
9
9
9
9
8

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

Precipitation Probability (%)

95
83
60
42
27
20
23
19
21
54
70
77
95
95
95
95
95
95
95
86
37
45
40
21

Precipitation Amount (mm)

0.7
0.5
0.3
0
0
0
0
0
0
0.3
0.4
0.3
1
2.3
5.4
2.7
2.3
1.9
1.2
0.6
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
16
16
15
15
15
14
14
14
14
15
15
16
16
16
16
16
15
15
14
14
14
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
87
87
87
89
89
89
90
92
84
79
74
69
64
61
59
57
56
59
62
64
68
70

Pressure (mb)

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

Ozone (du)

268
269
269
270
271
272
273
274
275
276
278
279
281
281
282
283
285
287
289
292
295
298
300
303

Sunday 21

New Moon 1%

08:06

19:38

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
18 Bad
19 Bad

Sun - Rise: 07:28, Set: 19:39, Transit: 13:34. Moon - Rise: 08:06, Set: 19:38. Civil Dark: 20:12 - 06:55. Nautical Dark: 20:52 - 06:15. Astro Dark: 21:34 - 05:34

Total Clouds (% Sky Obscured)

95
97
99
94
90
86
89
92
96
96
97
98
94
91
87
89
89
91
93
96
95

Low Clouds (% Sky Obscured)

64
50
47
44
47
46
45
45
47
39
29
24
27
31
33
34
35
36
37
39
41

Medium Clouds (% Sky Obscured)

12
25
36
41
43
47
35
30
30
39
49
59
50
39
33
33
34
35
34
34
34

High Clouds (% Sky Obscured)

76
84
91
88
89
85
85
85
75
65
45
45
45
40
35
25
20
34
39
14
38

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

33
43
52
53
52
52
43
36
31
27
26
26
27
31
34
31
29
24
20
15
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
12
11
11
9
10
10
10
10
10
12
12
12
13
13
13
17
16
16
16
17

Dew Point (°C)

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

Relative Humidity (%)

72
76
81
84
87
88
91
90
87
86
81
78
74
69
66
63
60
57
56
58
61

Pressure (mb)

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

Ozone (du)

306
308
310
312
313
314
315
315
315
316
316
317
318
319
320
321
321
322
322
321
320

Forecast for Capelle-West, Gemeente Capelle aan den IJssel, Netherlands (51.92,4.57)

Generated: 15/09/25 23:18:29. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+2.00