Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 3%

07:41

14:49

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
04 Bad
05 Bad

Sun - Rise: 08:41, Set: 16:37, Transit: 12:39. Moon - Rise: 07:41, Set: 14:49. Civil Dark: 17:17 - 08:01. Nautical Dark: 17:59 - 07:19. Astro Dark: 18:39 - 06:39

Total Clouds (% Sky Obscured)

92
89
94
95
96
92
97
97
95
86
99
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

52
64
77
75
75
78
70
57
43
7
1
0
4
13
24
26
66
87
87
89
83
86
90
82

Medium Clouds (% Sky Obscured)

80
89
87
52
73
50
43
47
41
39
54
79
77
100
98
97
100
100
98
97
100
100
100
100

High Clouds (% Sky Obscured)

17
30
10
9
8
34
77
79
79
58
89
100
100
97
100
100
100
100
100
100
100
100
99
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
6
6

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
Very Light Rain
None
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
1
30
12
5
3
1
1
0
0
1
6
4
9
11
15
25
48
61
54
70
88
92

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0.3
0.5
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
3
3
4
4
4
5
6
6
6
6
5
6
6
6
6
7
7
7
6
5
5
6
6

Dew Point (°C)

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

Relative Humidity (%)

82
81
80
81
84
82
83
80
79
73
71
70
66
63
62
64
67
69
70
72
73
75
81
85

Pressure (mb)

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

Ozone (du)

309
309
301
294
292
291
288
287
286
284
282
276
271
268
272
272
272
272
272
272
273
277
286
292

Friday 19

Waning Crescent 1%

08:45

15:31

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
04 Bad
05 Bad

Sun - Rise: 08:41, Set: 16:38, Transit: 12:40. Moon - Rise: 08:45, Set: 15:31. Civil Dark: 17:17 - 08:02. Nautical Dark: 18:00 - 07:19. Astro Dark: 18:40 - 06:39

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
95
100
100
100
96
100
100
99
100
96
100
100
99
100
100
100
100

Low Clouds (% Sky Obscured)

83
84
80
100
87
68
57
45
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
10

Medium Clouds (% Sky Obscured)

100
100
99
100
97
98
90
83
96
98
84
95
16
22
20
29
36
51
49
59
61
79
99
90

High Clouds (% Sky Obscured)

100
73
100
96
94
100
100
68
100
100
100
43
97
74
87
96
77
91
100
96
100
100
100
100

ISS Passover

Visibility (miles)

8
5
3
3
5
5
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
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
None
None
None

Precipitation Probability (%)

95
95
95
95
75
62
30
8
4
3
4
4
3
1
1
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.7
1
1.1
1
0.5
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
14
13
9
7
9
8
8
7
7
6
5
5
5
5
5
5
5
5
5
4
4
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
9
9
10
9
9
10
9
6
5
5
5
5
5
5
5
5
5
5
4
4
4
3
3

Relative Humidity (%)

87
90
91
95
88
88
91
87
76
68
72
75
78
81
82
85
87
90
90
88
90
90
89
89

Pressure (mb)

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

Ozone (du)

304
307
310
312
317
321
325
326
328
333
336
337
341
342
331
315
305
299
293
288
286
285
284
285

Saturday 20

New Moon 0%

09:39

16:25

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
04 Bad
05 Bad

Sun - Rise: 08:42, Set: 16:38, Transit: 12:40. Moon - Rise: 09:39, Set: 16:25. Civil Dark: 17:18 - 08:02. Nautical Dark: 18:00 - 07:20. Astro Dark: 18:40 - 06:40

Total Clouds (% Sky Obscured)

99
100
100
100
100
99
95
99
99
98
98
100
100
100
100
100
100
100
100
100
99
99
99
99

Low Clouds (% Sky Obscured)

15
45
65
72
83
82
83
88
84
70
65
70
69
62
70
71
67
84
79
73
65
56
57
58

Medium Clouds (% Sky Obscured)

91
97
97
99
90
82
86
93
91
92
93
100
100
95
85
85
94
90
86
81
77
97
98
93

High Clouds (% Sky Obscured)

94
97
98
99
100
77
49
77
89
91
94
88
100
100
100
99
99
100
95
93
84
84
82
91

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
6
13
23
30
27
27
33
38
26
13
8
2
0
3
19
12
26
16
12
20
11
35
46

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
4
4
3
4
3
4
4
5
5
6
6
6
6
7
6
7
7
7
7
7
7

Relative Humidity (%)

86
86
86
85
82
79
79
77
75
74
79
84
87
85
88
88
91
91
94
95
95
96
95
96

Pressure (mb)

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

Ozone (du)

284
283
283
282
285
285
285
288
283
283
282
281
281
283
285
286
286
289
289
291
293
294
296
295

Sunday 21

Waxing Crescent 2%

10:21

17:31

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

Sun - Rise: 08:42, Set: 16:39, Transit: 12:41. Moon - Rise: 10:21, Set: 17:31. Civil Dark: 17:18 - 08:03. Nautical Dark: 18:01 - 07:20. Astro Dark: 18:41 - 06:40

Total Clouds (% Sky Obscured)

100
100
100
100
95
90
87
75
60
47
54
61
69
70
70
72
79
85
91
92
93
95
97
98

Low Clouds (% Sky Obscured)

66
63
56
54
34
21
5
5
0
0
0
0
7
7
15
34
39
33
34
24
27
42
48
58

Medium Clouds (% Sky Obscured)

99
57
69
94
94
90
87
75
60
47
54
61
69
70
70
66
61
67
72
74
71
85
84
90

High Clouds (% Sky Obscured)

95
83
85
78
87
76
62
40
23
0
4
9
13
20
27
34
45
58
69
53
37
21
47
72

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

28
44
74
72
68
18
3
0
0
0
0
0
1
26
44
57
29
0
0
0
0
0
0
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
6
7
8
8
13
8
8
8
8
8
7
6
7
7
6
5
5
5
5
5
3
3
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
91
90
90
80
74
73
70
71
73
76
78
78
82
87
91
91
90
88
88
87
85
85

Pressure (mb)

1010
1009
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011

Ozone (du)

294
292
294
292
295
298
306
310
315
315
316
319
321
325
328
331
333
332
333
333
334
337
342
347

Monday 22

Waxing Crescent 6%

10:51

18:44

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
04 Bad
05 Bad

Sun - Rise: 08:43, Set: 16:39, Transit: 12:41. Moon - Rise: 10:51, Set: 18:44. Civil Dark: 17:19 - 08:03. Nautical Dark: 18:01 - 07:21. Astro Dark: 18:41 - 06:41

Total Clouds (% Sky Obscured)

100
99
98
96
96
95
95
93
92
91
94
97
100
98
97
97
96
97
97
98
98
98
95
91

Low Clouds (% Sky Obscured)

58
55
49
47
43
39
35
35
35
35
30
30
30
80
86
88
89
89
90
92
94
95
91
88

Medium Clouds (% Sky Obscured)

94
89
86
82
85
89
88
73
77
41
42
47
60
17
30
20
14
15
13
10
5
3
3
3

High Clouds (% Sky Obscured)

98
90
81
72
69
67
64
66
70
73
80
91
100
69
37
6
10
14
17
23
31
36
27
16

ISS Passover

Visibility (miles)

9
9
9
8
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
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 (%)

8
21
56
37
21
20
29
14
4
0
0
2
2
5
3
0
0
0
0
0
0
0
1
1

Precipitation Amount (mm)

0
0
0.3
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)

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

Chance of Frost

Temperature (°C)

7
7
7
7
7
7
8
8
8
8
8
8
8
7
7
7
7
7
7
7
7
6
6
6

Feels Like (°C)

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

Dew Point (°C)

5
4
4
5
5
6
6
7
7
7
7
7
7
6
6
6
6
6
5
4
4
4
4
3

Relative Humidity (%)

82
81
81
87
90
90
90
91
91
90
90
91
93
93
94
94
94
91
90
85
85
84
82
83

Pressure (mb)

1011
1011
1011
1012
1012
1012
1012
1011
1011
1011
1011
1011
1012
1012
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

352
358
362
366
374
382
386
392
396
397
398
401
403
404
404
403
402
399
396
392
391
389
387
386

Tuesday 23

Waxing Crescent 12%

11:14

20:01

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
04 Bad
05 Bad

Sun - Rise: 08:43, Set: 16:40, Transit: 12:42. Moon - Rise: 11:14, Set: 20:01. Civil Dark: 17:19 - 08:04. Nautical Dark: 18:02 - 07:21. Astro Dark: 18:42 - 06:41

Total Clouds (% Sky Obscured)

88
87
87
86
89
92
98
99
100
100
100
100
100
99
97
95
92
91
89
89
88
88
87
85

Low Clouds (% Sky Obscured)

87
86
82
71
44
42
39
43
53
63
74
85
94
94
94
92
91
91
89
89
88
88
87
85

Medium Clouds (% Sky Obscured)

3
2
1
0
0
0
0
0
0
0
0
0
0
0
1
2
3
3
2
6
10
15
12
9

High Clouds (% Sky Obscured)

4
5
6
3
4
0
0
0
0
5
5
10
10
15
20
30
35
40
40
40
40
70
37
55

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
2
4
5
6
5
3
5
4
1
3
3
3
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
0

Relative Humidity (%)

86
88
88
89
89
86
85
80
82
82
82
83
83
86
86
86
88
88
88
88
89
88
89
89

Pressure (mb)

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

Ozone (du)

385
383
383
384
384
386
389
391
392
393
393
393
393
392
392
392
392
390
387
384
384
383
383
384

Wednesday 24

Waxing Crescent 19%

11:31

21:18

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

Sun - Rise: 08:43, Set: 16:41, Transit: 12:42. Moon - Rise: 11:31, Set: 21:18. Civil Dark: 17:20 - 08:04. Nautical Dark: 18:02 - 07:22. Astro Dark: 18:42 - 06:42

Total Clouds (% Sky Obscured)

84
86
89
92
93
94
95
92
90
87
92
96
100
100
100
100
99
99
99

Low Clouds (% Sky Obscured)

84
86
85
85
87
88
89
85
81
78
77
78
77
79
81
84
84
84
87

Medium Clouds (% Sky Obscured)

5
7
10
15
22
22
24
24
26
24
31
24
20
15
10
5
5
5
5

High Clouds (% Sky Obscured)

34
33
31
26
26
32
42
59
60
64
52
43
29
21
12
5
5
5
3

ISS Passover

Visibility (miles)

8
8
8
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

Precipitation Type

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

Precipitation Probability (%)

0
8
11
12
12
11
8
7
5
1
5
7
7
18
23
27
28
29
31

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

2
2
1
1
2
2
2
2
2
3
3
3
3
3
2
2
3
3
3

Feels Like (°C)

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

Dew Point (°C)

1
1
-0
-1
-1
-1
-1
-1
-1
0
0
1
1
1
1
1
1
1
1

Relative Humidity (%)

91
93
89
88
86
84
81
81
82
83
85
86
86
88
88
89
89
89
89

Pressure (mb)

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

Ozone (du)

384
385
387
389
390
388
386
384
381
379
376
377
378
380
380
380
380
379
379

Forecast for Brussels, Bruxelles-Capitale, Kingdom of Belgium (50.85,4.35)

Generated: 18/12/25 06:16:50. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+1.00