Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:59

18:08

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
18 Bad
19 Bad
20 Bad
21 Bad

Sun - Rise: 07:12, Set: 19:47, Transit: 13:30. Moon - Rise: 23:59, Set: 18:08. Civil Dark: 20:22 - 06:38. Nautical Dark: 21:03 - 05:57. Astro Dark: 21:46 - 05:14

Total Clouds (% Sky Obscured)

74
81
82
81
87
93
91
96
87
90
94
87
80
84
100
97
99
93
85
73
87
75
73
73

Low Clouds (% Sky Obscured)

54
73
82
73
76
89
88
95
82
89
91
81
74
79
93
84
77
82
71
71
72
38
44
53

Medium Clouds (% Sky Obscured)

7
29
43
31
36
46
41
87
42
35
25
23
19
27
68
52
94
85
29
5
77
39
26
23

High Clouds (% Sky Obscured)

0
0
1
0
0
22
0
0
0
0
0
0
0
0
80
85
66
0
1
18
0
75
73
68

ISS Passover

Visibility (miles)

9
9
8
8
9
9
8
5
7
9
9
9
9
7
9
9
6
1
4
4
4
4
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

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

Precipitation Probability (%)

37
71
74
54
55
80
85
89
95
90
75
87
57
52
66
95
95
81
65
51
57
44
27
18

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

19
19
19
21
21
20
21
21
21
19
18
18
18
19
19
20
20
18
18
17
16
15
12
10

Chance of Frost

Temperature (°C)

15
15
15
14
14
14
14
14
14
14
14
14
14
15
15
15
15
14
14
15
15
14
14
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
76
82
84
86
89
86
86
86
86
82
79
78
75
78
78
76
92
87
83
84
84
87
87

Pressure (mb)

1005
1006
1006
1006
1006
1006
1007
1007
1008
1008
1009
1010
1011
1011
1011
1012
1013
1013
1014
1014
1014
1015
1015
1016

Ozone (du)

293
292
293
294
295
296
297
299
301
303
305
310
311
304
299
299
299
303
306
300
297
297
297
297

Tuesday 16

Waning Crescent 20%

01:21

18:33

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
18 Bad
19 Bad
20 Bad
21 Bad

Sun - Rise: 07:14, Set: 19:45, Transit: 13:29. Moon - Rise: 01:21, Set: 18:33. Civil Dark: 20:19 - 06:40. Nautical Dark: 21:00 - 05:59. Astro Dark: 21:43 - 05:16

Total Clouds (% Sky Obscured)

41
88
100
98
100
98
100
100
100
100
100
100
100
100
98
100
100
100
100
100
95
78
82
89

Low Clouds (% Sky Obscured)

32
36
23
37
28
24
34
9
29
34
37
36
40
41
66
100
100
100
100
100
94
78
81
82

Medium Clouds (% Sky Obscured)

19
24
19
14
33
50
53
57
95
99
98
91
91
96
83
100
89
90
74
57
61
5
56
55

High Clouds (% Sky Obscured)

12
48
100
96
100
97
100
100
100
89
100
100
94
100
26
36
27
62
14
10
0
0
0
0

ISS Passover

Visibility (miles)

7
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
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

12
10
7
3
0
1
4
23
40
57
85
67
23
8
16
7
5
3
4
4
3
8
10
23

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
10
10
10
11
11
11
11
11
11
10
9
9
10
11
11
11
11
11
11
11

Relative Humidity (%)

92
92
93
93
93
92
92
92
92
92
92
89
84
74
67
62
74
79
80
79
79
77
73
74

Pressure (mb)

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

Ozone (du)

292
285
281
278
273
269
266
264
260
257
254
254
253
252
251
250
248
248
251
253
255
258
258
258

Wednesday 17

Waning Crescent 12%

02:46

18:50

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
18 Bad
19 Bad
20 Bad
21 Bad

Sun - Rise: 07:16, Set: 19:43, Transit: 13:29. Moon - Rise: 02:46, Set: 18:50. Civil Dark: 20:17 - 06:42. Nautical Dark: 20:57 - 06:01. Astro Dark: 21:40 - 05:18

Total Clouds (% Sky Obscured)

88
92
95
80
86
89
95
90
91
76
81
100
93
84
87
96
97
79
83
79
81
85
70
57

Low Clouds (% Sky Obscured)

83
82
81
80
80
69
72
74
73
62
62
64
71
67
58
76
74
52
61
53
50
46
44
39

Medium Clouds (% Sky Obscured)

65
44
53
3
25
52
53
39
47
42
39
70
50
31
40
42
44
45
47
47
51
56
36
24

High Clouds (% Sky Obscured)

0
0
42
0
0
46
44
7
0
0
0
0
0
0
0
0
0
0
0
20
39
59
42
23

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 (%)

42
14
15
12
14
15
6
1
0
0
7
4
1
0
8
4
2
3
2
3
3
2
4
6

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
14
15
15
15
16
16
15
15
15
14
14
15
16
17
18
19
18
20
21
22
22
21
20

Dew Point (°C)

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

Relative Humidity (%)

81
92
93
92
93
95
95
95
95
95
95
93
92
88
78
70
72
69
62
63
66
76
85
88

Pressure (mb)

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

Ozone (du)

258
258
259
259
259
259
259
259
259
258
259
260
260
259
259
258
258
258
256
255
255
255
255
255

Thursday 18

Waning Crescent 6%

04:09

19:03

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 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
21 Bad

Sun - Rise: 07:17, Set: 19:40, Transit: 13:29. Moon - Rise: 04:09, Set: 19:03. Civil Dark: 20:14 - 06:43. Nautical Dark: 20:55 - 06:03. Astro Dark: 21:38 - 05:20

Total Clouds (% Sky Obscured)

44
57
54
61
53
60
72
62
69
68
64
56
41
49
57
64
55
56
58
50
45
42
46
50

Low Clouds (% Sky Obscured)

31
32
33
33
34
37
40
42
39
39
35
28
20
31
44
54
46
39
29
18
9
0
7
13

Medium Clouds (% Sky Obscured)

18
16
14
13
13
13
17
11
11
10
64
56
4
2
4
3
2
3
1
2
5
3
2
0

High Clouds (% Sky Obscured)

2
14
10
9
1
1
3
2
3
5
9
14
19
15
12
9
10
14
22
16
15
15
11
8

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 (%)

4
8
7
1
2
1
0
0
0
0
0
1
1
3
3
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
8
8
8
8
8
8
8
7
7
7
7
8
9
9
10
10
10
9
8
6
5
5
4

Chance of Frost

Temperature (°C)

18
17
17
16
16
16
15
15
15
14
14
16
18
21
22
23
25
25
26
25
24
22
20
20

Feels Like (°C)

20
18
17
17
15
16
15
14
14
13
13
15
16
20
21
22
24
25
25
25
25
22
21
20

Dew Point (°C)

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

Relative Humidity (%)

89
89
89
89
89
89
86
79
71
67
70
69
61
53
48
44
44
45
48
52
60
65
68
72

Pressure (mb)

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

Ozone (du)

254
255
255
254
253
253
252
251
250
250
251
251
251
252
252
253
253
254
254
254
254
255
255
255

Friday 19

Waning Crescent 2%

05:29

19:13

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

Sun - Rise: 07:19, Set: 19:38, Transit: 13:28. Moon - Rise: 05:29, Set: 19:13. Civil Dark: 20:12 - 06:45. Nautical Dark: 20:52 - 06:04. Astro Dark: 21:35 - 05:22

Total Clouds (% Sky Obscured)

54
56
44
45
29
19
16
21
18
12
39
53
68
56
49
44
52
60
66
71
77
82
84
86

Low Clouds (% Sky Obscured)

21
20
21
21
17
11
6
4
2
0
0
0
0
0
0
0
0
0
0
17
34
46
47
44

Medium Clouds (% Sky Obscured)

0
1
3
28
0
0
0
0
0
0
4
2
2
3
3
4
12
16
21
32
48
60
65
85

High Clouds (% Sky Obscured)

5
5
4
4
6
8
11
10
7
3
30
48
65
56
47
39
45
54
66
69
75
82
84
86

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
2
3
26
38
46
39
39

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
18
18
19
18
18
18
17
16
16
15
16
17
17
19
20
20
27
26
26
25
25
25
16

Dew Point (°C)

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

Relative Humidity (%)

75
77
77
79
78
78
77
77
75
74
67
59
52
46
44
42
40
46
51
57
65
76
88
90

Pressure (mb)

1019
1019
1018
1018
1018
1018
1017
1017
1017
1017
1016
1017
1017
1017
1017
1016
1015
1015
1014
1014
1013
1013
1012
1012

Ozone (du)

255
255
255
256
256
256
256
256
256
257
258
258
258
258
257
256
255
253
251
249
250
250
250
249

Saturday 20

Waning Crescent 0%

06:45

19:22

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
18 Bad
19 Bad
20 Bad
21 Bad

Sun - Rise: 07:21, Set: 19:35, Transit: 13:28. Moon - Rise: 06:45, Set: 19:22. Civil Dark: 20:09 - 06:47. Nautical Dark: 20:50 - 06:06. Astro Dark: 21:32 - 05:24

Total Clouds (% Sky Obscured)

88
84
83
81
74
69
66
68
62
54
68
84
100
98
95
93
85
82
79
77
78
79
76
73

Low Clouds (% Sky Obscured)

45
45
50
56
52
47
41
37
33
30
34
41
47
45
42
47
41
35
34
42
47
52
49
43

Medium Clouds (% Sky Obscured)

85
84
77
71
50
29
10
17
22
28
42
55
65
59
54
57
44
38
25
28
31
28
21
9

High Clouds (% Sky Obscured)

88
75
58
35
30
20
10
9
7
6
37
69
100
83
66
49
55
60
65
67
69
70
72
73

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
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
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

Precipitation Probability (%)

53
64
57
30
27
20
0
0
0
0
7
11
15
22
27
28
29
27
21
20
21
20
28
26

Precipitation Amount (mm)

0
0.3
0.2
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
7
7
7
6
6
6
6
6
6
6
7
7
8
8
8
9
10
10
11
10
9
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
96
96
96
96
96
96
98
98
98
96
93
93
88
81
75
65
56
48
51
56
61
65

Pressure (mb)

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

Ozone (du)

249
248
250
252
255
255
255
255
256
257
258
259
261
262
265
267
269
270
272
273
274
275
275
276

Sunday 21

New Moon 1%

08:00

19:31

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

Sun - Rise: 07:22, Set: 19:33, Transit: 13:28. Moon - Rise: 08:00, Set: 19:31. Civil Dark: 20:07 - 06:48. Nautical Dark: 20:47 - 06:08. Astro Dark: 21:29 - 05:26

Total Clouds (% Sky Obscured)

71
65
60
48
60
72
83
82
81
82
80
86
86
83
81
78

Low Clouds (% Sky Obscured)

43
53
54
48
60
68
78
76
77
77
73
73
75
66
57
49

Medium Clouds (% Sky Obscured)

0
0
0
0
4
9
15
19
19
21
25
31
32
32
31
28

High Clouds (% Sky Obscured)

71
65
42
18
15
10
6
7
9
10
37
64
86
62
42
41

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
8
3
1
4
5
5
5
4
2
4
5
1
3
6
8

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
8
8
8
7
9
10
10
11
12
12
12
12
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
14
14
11
11
11
11
11
11
9
9
9
10
9

Dew Point (°C)

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

Relative Humidity (%)

69
75
74
74
75
72
71
69
70
71
73
70
69
67
58
52

Pressure (mb)

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

Ozone (du)

277
278
279
280
280
282
283
285
285
285
285
285
285
285
285
285

Forecast for Frankhuis, Gemeente Zwolle, Netherlands (52.52,6.08)

Generated: 15/09/25 22:13:38. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+2.00