Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 1%

08:52

15:17

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
18 Bad

Sun - Rise: 08:45, Set: 16:28, Transit: 12:36. Moon - Rise: 08:52, Set: 15:17. Civil Dark: 17:09 - 08:03. Nautical Dark: 17:53 - 07:20. Astro Dark: 18:34 - 06:38

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
98
96
97
98
98
88
100
100
100
99
95

Low Clouds (% Sky Obscured)

76
25
43
44
69
78
87
93
84
82
90
99
95
86
66
52
38
7
0
0
0
0
16
20

Medium Clouds (% Sky Obscured)

94
76
54
96
100
100
100
92
91
100
93
89
100
91
94
97
98
96
88
86
44
57
67
65

High Clouds (% Sky Obscured)

100
100
100
85
100
100
100
100
100
100
100
49
100
65
68
34
34
78
23
100
100
100
99
95

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
5
23
34
45
45
68
64
50
61
65
49
41
30
12
2
0
0
0
0
1
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.4
0.3
0
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
17
18
17
17
17
17
15
16
15
15
16
15
15
13
12
11
11
11
10
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
67
64
64
64
67
70
76
75
86
86
81
87
88
91
90
88
85
74
72
74
78
82
84

Pressure (mb)

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

Ozone (du)

275
276
274
274
275
277
277
285
295
308
316
317
313
300
304
309
314
324
332
339
332
336
348
349

Friday 19

Waning Crescent 0%

09:46

16:11

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
18 Bad

Sun - Rise: 08:45, Set: 16:28, Transit: 12:37. Moon - Rise: 09:46, Set: 16:11. Civil Dark: 17:09 - 08:04. Nautical Dark: 17:53 - 07:20. Astro Dark: 18:34 - 06:39

Total Clouds (% Sky Obscured)

59
60
70
87
79
82
78
74
82
79
74
72
75
76
99
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

21
28
36
47
64
45
38
34
47
47
53
43
48
50
86
90
85
74
83
79
66
88
89
85

Medium Clouds (% Sky Obscured)

39
10
0
0
0
0
0
0
0
0
1
28
45
40
50
60
76
91
88
93
97
100
100
100

High Clouds (% Sky Obscured)

41
24
38
71
45
20
20
15
15
10
6
18
21
11
27
51
81
100
100
100
100
100
100
100

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
6
7
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
66
13
31
31
28
38
44
1
3
1
0

Precipitation Type

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

Precipitation Probability (%)

0
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
8
37
58
59
58

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
7
6
6
6
6
6
5
5
6
6
5
5
5
5
5
5
6
6
5
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
4
4
4
4
4
3
3
3
3
3
2
2
2
2
3
3
3
4
4
4
3
4

Dew Point (°C)

6
6
6
6
6
6
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
5
5

Relative Humidity (%)

87
90
93
94
94
94
94
96
96
96
96
96
96
96
96
93
90
86
83
84
82
85
90
91

Pressure (mb)

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

Ozone (du)

347
343
328
324
317
304
298
294
286
283
284
280
278
279
279
280
282
284
281
277
274
274
274
276

Saturday 20

New Moon 2%

10:26

17:18

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
18 Bad

Sun - Rise: 08:46, Set: 16:28, Transit: 12:37. Moon - Rise: 10:26, Set: 17:18. Civil Dark: 17:10 - 08:05. Nautical Dark: 17:53 - 07:21. Astro Dark: 18:35 - 06:39

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
89
97
100
100
100
96
95
90
74
72
53
37
55
78
100
93
85
79

Low Clouds (% Sky Obscured)

58
68
58
56
54
46
46
43
34
40
51
46
51
46
50
43
27
15
15
5
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
94
77
88
88
77
79
67
58
100
67
50
38
27
22
13
10
22
78
100
93
85
79

High Clouds (% Sky Obscured)

98
90
92
91
90
91
14
43
100
100
100
40
55
70
70
45
35
34
38
78
100
83
85
79

ISS Passover

Visibility (miles)

6
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
9
9
9

Fog (%)

0
0
7
72
100
100
100
100
100
100
100
98
5
5
5
5
5
5
5
5
5
5
5
5

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 (%)

51
36
18
5
3
4
0
0
3
4
13
10
3
5
2
2
4
5
22
39
32
7
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
4
4
4
5
5
4
4
4
4
4
4
4
4
4
4
5
6
7
6
6
6
5
5

Dew Point (°C)

5
5
5
5
5
6
6
6
6
6
6
6
6
6
5
6
6
7
7
7
6
6
5
4

Relative Humidity (%)

90
90
91
91
91
93
93
94
96
96
96
96
94
93
93
94
90
88
87
85
82
81
78
77

Pressure (mb)

1013
1013
1013
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1011
1011

Ozone (du)

277
278
279
282
285
287
287
288
287
283
282
284
286
288
290
292
293
295
301
305
308
309
311
314

Sunday 21

Waxing Crescent 6%

10:55

18:33

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
18 Bad

Sun - Rise: 08:46, Set: 16:29, Transit: 12:38. Moon - Rise: 10:55, Set: 18:33. Civil Dark: 17:10 - 08:05. Nautical Dark: 17:54 - 07:21. Astro Dark: 18:35 - 06:40

Total Clouds (% Sky Obscured)

81
85
89
90
91
92
93
94
96
95
95
95
94
93
92
93
93
94
95
96
97
98
99
100

Low Clouds (% Sky Obscured)

24
50
72
65
60
62
70
70
69
75
77
78
77
75
77
78
82
83
80
73
64
61
59
67

Medium Clouds (% Sky Obscured)

80
77
71
68
30
13
19
30
37
29
25
17
65
64
69
62
55
51
55
59
63
55
48
45

High Clouds (% Sky Obscured)

79
82
71
58
49
45
30
21
25
19
18
16
19
21
24
21
18
15
34
49
64
76
88
100

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 (%)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

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)

7
6
6
6
6
6
6
6
6
6
6
7
7
7
6
6
7
7
7
6
5
5
5
5

Chance of Frost

Temperature (°C)

7
7
7
7
6
6
6
6
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6

Feels Like (°C)

5
5
4
4
4
4
4
3
3
3
3
2
2
2
2
3
3
3
4
4
4
4
4
4

Dew Point (°C)

4
4
4
4
4
5
4
4
4
4
4
4
4
3
4
4
4
3
4
3
4
4
4
4

Relative Humidity (%)

77
79
79
81
87
90
90
90
88
91
91
91
91
89
90
90
86
82
82
81
84
86
88
88

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1012
1012
1012
1013

Ozone (du)

313
311
318
321
326
330
342
346
348
351
351
353
356
358
360
362
365
371
375
378
380
381
380
381

Monday 22

Waxing Crescent 12%

11:16

No Set

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
18 OK

Sun - Rise: 08:46, Set: 16:30, Transit: 12:38. Moon - Rise: 11:16, Set: No Set. Civil Dark: 17:11 - 08:05. Nautical Dark: 17:55 - 07:21. Astro Dark: 18:36 - 06:40

Total Clouds (% Sky Obscured)

99
98
96
95
92
90
90
91
93
92
92
91
94
91
89
83
78
73
71
70
74
62
42
29

Low Clouds (% Sky Obscured)

78
87
88
89
86
83
83
85
88
91
92
91
92
90
89
83
78
73
71
70
74
62
42
29

Medium Clouds (% Sky Obscured)

45
40
40
35
35
35
35
30
35
35
40
40
69
62
50
66
73
70
70
70
74
62
42
29

High Clouds (% Sky Obscured)

91
83
74
49
25
0
0
0
0
3
6
13
33
28
24
20
20
19
30
37
55
62
42
29

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 (%)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

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
1
2
1
0
0
0
0
0
0
1
1
5
5
3
8
9
7
11
15
18
16
12
2

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
5
6
6
6
6
6
6
6
6
6
6
6
4
4
4
5
6
8
10
11
11
12
12

Chance of Frost

Temperature (°C)

6
6
6
5
6
5
5
5
5
5
5
5
5
5
5
5
5
6
6
5
5
5
5
4

Feels Like (°C)

4
4
3
4
3
4
3
3
3
3
3
3
3
4
4
4
4
4
4
3
3
3
2
2

Dew Point (°C)

4
4
4
4
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
2

Relative Humidity (%)

90
88
88
90
93
96
96
96
96
96
94
94
94
93
93
93
91
90
88
86
85
85
86
88

Pressure (mb)

1013
1014
1014
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1019
1019
1020

Ozone (du)

384
387
388
389
389
389
390
389
390
391
392
391
391
390
389
388
387
386
385
386
386
387
388
390

Tuesday 23

Waxing Crescent 19%

11:32

19:52

19 Bad
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

Sun - Rise: 08:47, Set: 16:30, Transit: 12:39. Moon - Rise: 11:32, Set: 19:52. Civil Dark: 17:11 - 08:06. Nautical Dark: 17:55 - 07:22. Astro Dark: 18:37 - 06:40

Total Clouds (% Sky Obscured)

30
37
43
52
62
71
68
75
77
73
67
61
69
72
70
65
65
70
74
73
77
79
82
71

Low Clouds (% Sky Obscured)

30
37
43
52
62
71
68
75
77
73
67
61
69
72
70
65
41
15
13
13
19
32
46
67

Medium Clouds (% Sky Obscured)

30
37
26
19
11
4
3
2
1
1
0
0
0
0
0
20
40
65
65
65
65
62
55
39

High Clouds (% Sky Obscured)

30
37
43
24
18
17
17
16
15
8
9
10
7
2
0
0
0
0
0
0
0
0
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 (%)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

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 (%)

5
4
0
1
1
0
2
2
0
0
0
0
0
0
0
0
0
0
6
9
5
16
20
17

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)

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

Chance of Frost

Temperature (°C)

4
4
4
4
4
4
4
3
3
2
2
1
1
0
-0
-1
-0
0
0
1
0
0
0
0

Feels Like (°C)

2
0
-1
-1
-1
-1
-1
-2
-2
-3
-3
-3
-4
-5
-6
-6
-6
-6
-6
-4
-4
-4
-4
-4

Dew Point (°C)

2
2
2
1
1
1
1
0
0
-1
-1
-2
-3
-3
-4
-5
-5
-5
-5
-5
-6
-7
-6
-6

Relative Humidity (%)

89
86
86
83
85
85
83
82
82
80
81
81
80
77
75
74
71
70
69
66
64
60
63
66

Pressure (mb)

1020
1021
1021
1022
1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024

Ozone (du)

392
392
392
393
392
391
390
390
391
391
391
391
391
391
391
391
391
391
391
391
391
391
386
381

Wednesday 24

Waxing Crescent 28%

11:45

21:11

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

Sun - Rise: 08:47, Set: 16:31, Transit: 12:39. Moon - Rise: 11:45, Set: 21:11. Civil Dark: 17:12 - 08:06. Nautical Dark: 17:56 - 07:22. Astro Dark: 18:37 - 06:41

Total Clouds (% Sky Obscured)

65
64
63
60
58
45
45
46
51
45
39
33
36
42
43
43
43
43

Low Clouds (% Sky Obscured)

65
64
63
60
58
45
45
44
42
43
39
33
36
42
43
43
43
43

Medium Clouds (% Sky Obscured)

33
28
26
19
19
15
20
25
30
22
11
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

Precipitation Type

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

Precipitation Probability (%)

15
11
2
3
4
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-0
-1
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-1
0

Feels Like (°C)

-4
-6
-6
-5
-6
-6
-5
-6
-7
-6
-7
-6
-7
-7
-7
-7
-7
-7

Dew Point (°C)

-6
-6
-5
-6
-6
-6
-6
-6
-7
-7
-7
-7
-8
-8
-8
-9
-9
-9

Relative Humidity (%)

67
68
70
70
70
71
71
70
69
68
67
66
64
61
60
57
53
50

Pressure (mb)

1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1027
1026
1026

Ozone (du)

376
375
374
373
373
373
372
368
364
360
358
356
353
351
350
348
346
345

Forecast for Lage-Vuursche, Gemeente Baarn, Netherlands (52.18,5.22)

Generated: 18/12/25 19:19:50. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+1.00