Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Gibbous 100%

20:27

06:54

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
18 OK
19 OK

Sun - Rise: 06:46, Set: 20:40, Transit: 13:42. Moon - Rise: 20:27, Set: 06:54. Civil Dark: 21:16 - 06:10. Nautical Dark: 22:02 - 05:26. Astro Dark: 22:53 - 04:35

Total Clouds (% Sky Obscured)

100
89
100
77
100
100
100
100
100
94
77
92
89
89
100
82
100
92
81
77
68
63
37
17

Low Clouds (% Sky Obscured)

6
29
39
27
30
43
73
87
68
53
26
30
26
30
33
27
32
32
34
67
54
54
30
16

Medium Clouds (% Sky Obscured)

70
89
63
40
38
84
86
88
70
77
43
16
15
15
81
35
100
24
78
76
68
56
20
2

High Clouds (% Sky Obscured)

100
89
100
77
100
100
100
100
100
81
50
58
60
40
100
82
100
89
39
51
40
3
2
1

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
27
95
95
60
56
64
76
74
44
7
16
24
34
37
55
46
71
69
54
27
50
7
17

Precipitation Amount (mm)

1.3
0
0.4
0.8
0
0
0.2
0.3
0.5
0.3
0
0
0
0
0
0.2
0
0.4
0.3
0.2
0
0.3
0
0

Wind Speed/Direction (mph)

7
5
5
5
3
6
7
4
8
11
11
9
7
8
10
12
14
14
16
17
16
16
15
16

Chance of Frost

Temperature (°C)

24
22
21
20
20
20
19
19
19
19
19
19
19
19
19
20
20
20
21
21
21
20
20
20

Feels Like (°C)

25
23
23
22
22
20
20
20
20
19
18
18
19
19
18
18
17
17
17
18
18
18
17
17

Dew Point (°C)

22
21
19
19
19
19
18
19
19
18
17
17
17
16
15
13
11
11
12
14
16
15
15
14

Relative Humidity (%)

88
91
89
92
93
93
93
95
95
93
91
88
86
84
76
67
57
57
56
64
75
74
71
67

Pressure (mb)

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

Ozone (du)

310
309
311
311
312
312
313
316
316
317
323
326
324
326
328
332
332
338
344
342
343
344
343
339

Friday 28

Full Moon 99%

20:38

08:12

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
18 Bad
19 Bad

Sun - Rise: 06:48, Set: 20:38, Transit: 13:42. Moon - Rise: 20:38, Set: 08:12. Civil Dark: 21:14 - 06:12. Nautical Dark: 21:59 - 05:28. Astro Dark: 22:50 - 04:37

Total Clouds (% Sky Obscured)

67
100
63
62
55
89
68
94
91
94
82
78
78
68
73
100
100
97
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

16
30
27
33
39
34
43
91
85
91
76
68
43
28
48
32
46
25
7
62
80
95
91
86

Medium Clouds (% Sky Obscured)

0
11
1
2
12
18
21
6
13
10
8
10
4
0
4
7
50
94
100
100
100
29
20
29

High Clouds (% Sky Obscured)

67
100
25
17
3
20
27
1
1
0
0
2
30
33
30
100
71
82
100
100
76
0
56
75

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

21
31
30
22
19
19
27
50
71
78
80
74
68
58
45
35
42
35
27
36
54
68
68
74

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
68
75
73
76
77
75
76
85
88
88
90
88
86
84
82
79
66
62
59
61
67
67
76

Pressure (mb)

1007
1007
1008
1008
1008
1008
1008
1007
1007
1007
1007
1007
1008
1008
1009
1009
1009
1009
1009
1009
1008
1008
1007
1007

Ozone (du)

337
334
333
331
331
326
325
323
323
322
320
317
314
309
306
305
303
303
302
303
303
306
308
306

Saturday 29

Waning Gibbous 96%

20:48

09:31

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
18 Bad
19 Bad

Sun - Rise: 06:50, Set: 20:36, Transit: 13:42. Moon - Rise: 20:48, Set: 09:31. Civil Dark: 21:12 - 06:14. Nautical Dark: 21:56 - 05:30. Astro Dark: 22:46 - 04:40

Total Clouds (% Sky Obscured)

100
100
99
100
100
85
66
68
71
65
65
74
59
95
90
98
88
98
99
99
100
100
100
70

Low Clouds (% Sky Obscured)

76
27
57
68
89
68
65
68
59
47
49
43
41
60
63
79
74
45
42
40
42
37
29
24

Medium Clouds (% Sky Obscured)

34
100
87
32
28
21
0
0
10
6
11
9
11
14
13
14
1
11
14
16
15
15
15
10

High Clouds (% Sky Obscured)

81
81
88
100
100
0
0
1
1
35
26
38
2
51
73
84
60
90
94
97
100
100
100
50

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

68
90
95
95
95
95
65
52
49
49
47
33
40
46
43
44
34
25
23
18
22
38
64
70

Precipitation Amount (mm)

0.3
0.5
0.7
1.2
1.3
1.1
0.4
0.2
0
0
0.2
0
0
0.2
0.2
0.3
0
0
0
0
0
0
0.3
0.3

Wind Speed/Direction (mph)

16
16
17
17
20
22
23
22
20
19
17
16
15
15
17
17
17
17
16
16
15
14
13
12

Chance of Frost

Temperature (°C)

18
18
19
18
19
19
19
19
19
19
18
18
19
19
19
19
20
20
20
20
20
20
20
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
85
85
88
85
89
88
88
88
89
90
89
88
85
81
76
76
69
65
66
66
65
67
76

Pressure (mb)

1006
1006
1006
1005
1005
1004
1005
1005
1006
1006
1006
1007
1008
1009
1009
1010
1010
1010
1011
1010
1010
1010
1009
1009

Ozone (du)

305
305
305
305
303
303
304
304
306
305
304
303
303
302
302
303
303
304
305
305
304
306
307
309

Sunday 30

Waning Gibbous 91%

20:59

10:52

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
18 Bad
19 Bad

Sun - Rise: 06:51, Set: 20:33, Transit: 13:41. Moon - Rise: 20:59, Set: 10:52. Civil Dark: 21:09 - 06:16. Nautical Dark: 21:53 - 05:32. Astro Dark: 22:43 - 04:43

Total Clouds (% Sky Obscured)

68
67
66
70
88
96
85
100
100
100
91
100
91
95
99
94
67
63
44
54
40
40
44
58

Low Clouds (% Sky Obscured)

24
18
17
20
22
26
34
65
72
60
45
86
55
38
38
36
51
53
32
42
26
24
28
41

Medium Clouds (% Sky Obscured)

5
9
5
10
14
10
30
12
97
98
13
100
36
17
45
87
13
11
11
11
10
10
10
8

High Clouds (% Sky Obscured)

45
39
38
49
80
96
82
100
100
92
91
100
88
95
99
73
28
0
0
0
0
3
7
13

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

77
45
17
39
63
95
95
95
95
95
95
95
95
95
95
95
90
77
55
45
34
36
41
51

Precipitation Amount (mm)

0.5
0
0
0
0.2
0.9
0.8
1.2
1.4
1.7
1.5
2.2
1.4
1.3
2.1
1.3
0.7
0.7
0.2
0
0
0
0
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
19
18
18
18
18
18
17
17
17
17
17
17
17
17
17
18
18
19
19
19
20
19
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
84
82
81
82
82
86
86
89
93
92
90
87
82
78
76
77
73
68
67
64
61
67
70

Pressure (mb)

1009
1009
1008
1008
1008
1007
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1007
1008
1008
1009
1010
1010
1010
1011

Ozone (du)

310
314
322
327
326
326
325
325
325
328
328
329
330
331
332
331
330
330
326
325
324
322
320
317

Monday 31

Waning Gibbous 83%

21:11

12:17

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 OK
17 OK
18 OK
19 OK

Sun - Rise: 06:53, Set: 20:31, Transit: 13:41. Moon - Rise: 21:11, Set: 12:17. Civil Dark: 21:07 - 06:18. Nautical Dark: 21:51 - 05:34. Astro Dark: 22:40 - 04:45

Total Clouds (% Sky Obscured)

88
93
100
100
100
100
100
100
99
100
100
100
99
98
98
92
87
83
62
42
20
20
20
20

Low Clouds (% Sky Obscured)

31
31
38
38
40
39
33
30
27
27
27
28
25
26
31
32
29
32
28
24
16
15
13
12

Medium Clouds (% Sky Obscured)

9
10
17
39
39
70
10
57
27
83
81
58
77
82
88
84
80
76
52
28
3
2
1
0

High Clouds (% Sky Obscured)

61
80
100
100
100
100
100
100
99
100
100
100
58
49
38
30
28
31
21
11
1
1
2
3

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

49
50
56
50
36
29
11
7
19
12
22
15
41
42
52
49
43
49
40
29
27
17
11
15

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
74
77
78
78
78
78
79
81
83
85
85
82
74
66
59
59
57
55
57
58
60
63
69

Pressure (mb)

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

Ozone (du)

314
314
312
312
312
313
313
314
314
314
314
314
315
316
318
320
322
323
324
325
326
327
326
325

Tuesday 1

Waning Gibbous 74%

21:27

13:44

20 OK
21 OK
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

Sun - Rise: 06:55, Set: 20:29, Transit: 13:41. Moon - Rise: 21:27, Set: 13:44. Civil Dark: 21:04 - 06:19. Nautical Dark: 21:48 - 05:36. Astro Dark: 22:37 - 04:48

Total Clouds (% Sky Obscured)

16
16
13
40
67
95
96
98
100
100
100
100
100
100
100
90
81
74
66
55
44
36
27
22

Low Clouds (% Sky Obscured)

10
11
11
15
19
23
28
31
33
33
31
31
52
73
93
78
63
48
41
30
20
16
13
14

Medium Clouds (% Sky Obscured)

1
2
3
2
4
5
25
46
65
77
88
100
100
99
98
79
60
42
33
24
15
10
5
0

High Clouds (% Sky Obscured)

2
2
2
33
67
95
96
97
100
100
100
100
100
100
100
84
69
56
42
29
11
8
5
2

ISS Passover

Visibility (miles)

9
9
8
7
8
8
8
7
6
5
4
3
2
5
7
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
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

20
27
45
42
40
49
55
58
69
77
87
95
95
95
95
95
92
90
84
79
88
77
68
66

Precipitation Amount (mm)

0
0
0.2
0
0
0.3
0.3
0.3
0.4
0.5
0.6
0.9
1
1
1.2
0.8
0.5
0.5
0.5
0.4
0.7
0.5
0.4
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
17
17
17
17
17
17
17
17
17
16
16
16
16
17
17
18
18
19
19
19
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
73
76
77
76
72
71
74
77
81
83
86
90
87
86
83
73
64
56
55
55
55
58
61

Pressure (mb)

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

Ozone (du)

325
324
323
322
323
323
324
325
326
327
328
328
329
329
330
330
332
333
334
333
331
329
326
323

Wednesday 2

Waning Gibbous 63%

21:48

15:12

20 Bad
21 Bad
22 OK
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: 06:56, Set: 20:26, Transit: 13:40. Moon - Rise: 21:48, Set: 15:12. Civil Dark: 21:02 - 06:21. Nautical Dark: 21:45 - 05:38. Astro Dark: 22:34 - 04:50

Total Clouds (% Sky Obscured)

24
28
35
55
77
95
98
99
100
95
89
84
79
77
78
75
75
72

Low Clouds (% Sky Obscured)

14
15
18
20
26
35
36
33
29
29
29
31
48
64
78
75
74
68

Medium Clouds (% Sky Obscured)

3
4
6
6
8
7
7
8
9
18
27
37
51
66
78
75
75
72

High Clouds (% Sky Obscured)

2
3
3
34
66
95
98
99
100
79
59
39
31
23
43
49
59
60

ISS Passover

Visibility (miles)

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

Fog (%)

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
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

50
34
8
21
22
15
18
11
3
10
7
13
19
28
40
57
71
80

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
17
17
16
17
17
17
17
17
18
17
17
17
17
18
18
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
65
67
68
68
69
71
71
72
72
74
78
82
81
82
82
85
89

Pressure (mb)

1016
1016
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

320
318
317
315
313
311
309
308
307
305
305
304
304
303
302
301
300
300

Forecast for Overveen, Gemeente Bloemendaal, Netherlands (52.39,4.61)

Generated: 27/08/26 20:21:18. Forecast: 27/08/26 to 02/09/26. Timezone: UTC+2.00