Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 8

Waning Gibbous 77%

20:35

12:24

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: 08:33, Set: 16:36, Transit: 12:35. Moon - Rise: 20:35, Set: 12:24. Civil Dark: 17:15 - 07:54. Nautical Dark: 17:58 - 07:12. Astro Dark: 18:38 - 06:32

Total Clouds (% Sky Obscured)

98
98
98
99
100
99
100
100
96
100
100
100
100
100
98
100
100
100
95
96
100
100
100
98

Low Clouds (% Sky Obscured)

89
68
61
69
52
38
25
30
1
1
0
0
0
0
10
8
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

98
98
98
97
100
78
87
65
34
34
71
82
72
58
96
98
67
42
44
27
30
32
40
66

High Clouds (% Sky Obscured)

98
98
98
90
97
95
100
100
89
100
100
100
99
100
73
98
100
100
82
86
100
100
95
81

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
4
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
89
69
40
15
17
1
0
0
0
2
4
4
6
13
10
2
0
0
0
0
1
4

Precipitation Amount (mm)

1.5
1.6
0.6
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
87
86
82
80
81
81
83
80
84
84
84
84
83
84
80
73
72
71
69
69
68
68
68

Pressure (mb)

1014
1014
1015
1014
1014
1014
1015
1014
1014
1014
1013
1013
1012
1012
1012
1012
1012
1012
1011
1010
1010
1010
1010
1010

Ozone (du)

320
316
318
318
317
319
318
316
314
312
309
306
303
303
298
295
293
291
290
291
295
294
291
287

Tuesday 9

Waning Gibbous 67%

22:00

12:40

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: 08:34, Set: 16:36, Transit: 12:35. Moon - Rise: 22:00, Set: 12:40. Civil Dark: 17:15 - 07:55. Nautical Dark: 17:58 - 07:13. Astro Dark: 18:38 - 06:33

Total Clouds (% Sky Obscured)

98
100
100
95
100
99
97
100
100
99
95
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

69
72
86
85
84
85
78
85
87
73
72
62
65
59
59
59
56
57
57
63
63
63
59
59

Medium Clouds (% Sky Obscured)

93
59
97
81
100
98
92
100
100
99
95
99
100
100
100
100
100
100
100
99
100
100
93
87

High Clouds (% Sky Obscured)

69
90
75
0
0
1
26
3
26
27
3
36
39
89
6
96
96
79
100
100
83
87
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
17
46
44
43
49
40
48
54
25
5
1
0
0
0
0
0
1
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
16
16
14
12
13
13
13
12
11
11
10
10
9
9
9
9
10
10
10
9
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
8
8
8
8
8
8
8
8
9
8
8
8
9
9
9
9
9
9
10
9
9

Dew Point (°C)

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

Relative Humidity (%)

69
68
68
70
71
76
83
86
88
92
90
92
93
95
95
93
90
88
84
86
84
84
87
88

Pressure (mb)

1010
1011
1011
1011
1012
1012
1012
1013
1013
1014
1014
1014
1015
1015
1016
1017
1017
1017
1017
1018
1018
1019
1019
1020

Ozone (du)

286
286
287
287
287
285
282
281
279
277
276
276
276
275
274
275
277
277
277
278
277
277
279
279

Wednesday 10

Waning Gibbous 57%

23:19

12:53

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: 08:35, Set: 16:36, Transit: 12:36. Moon - Rise: 23:19, Set: 12:53. Civil Dark: 17:15 - 07:56. Nautical Dark: 17:58 - 07:14. Astro Dark: 18:38 - 06:34

Total Clouds (% Sky Obscured)

100
100
100
63
79
78
79
73
63
71
84
69
71
83
89
89
85
77
81
83
88
92
95
100

Low Clouds (% Sky Obscured)

65
70
76
55
74
71
72
65
63
64
70
55
57
60
61
62
60
46
53
63
76
79
78
78

Medium Clouds (% Sky Obscured)

92
96
33
35
2
0
0
0
0
0
0
0
0
0
0
0
0
1
4
4
12
72
75
80

High Clouds (% Sky Obscured)

100
100
98
0
0
5
5
10
5
10
20
19
13
15
15
5
5
10
10
9
10
40
72
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 (%)

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
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
9
29

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
91
91
91
93
93
93
93
95
93
95
93
94
93
93
90
87
85
84
87
90
90
90

Pressure (mb)

1020
1021
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1021
1021
1020
1020
1020
1020

Ozone (du)

281
285
287
288
293
294
293
292
292
293
293
295
296
296
296
296
295
294
295
295
296
296
297
297

Thursday 11

Third Quarter 46%

00:33

13:04

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: 08:36, Set: 16:36, Transit: 12:36. Moon - Rise: 00:33, Set: 13:04. Civil Dark: 17:15 - 07:57. Nautical Dark: 17:58 - 07:15. Astro Dark: 18:38 - 06:34

Total Clouds (% Sky Obscured)

100
100
100
100
99
98
95
87
86
91
95
100
100
100
100
97
100
97
100
99
100
100
100
75

Low Clouds (% Sky Obscured)

64
44
28
25
29
30
26
21
18
21
28
35
22
17
25
17
22
2
2
4
5
12
19
25

Medium Clouds (% Sky Obscured)

87
92
100
100
93
63
94
64
86
78
91
83
77
62
63
65
27
38
19
15
21
15
23
29

High Clouds (% Sky Obscured)

100
100
100
76
53
21
16
11
9
39
70
100
100
100
100
97
99
97
100
99
100
100
100
75

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

39
38
19
4
1
4
4
6
8
9
7
1
6
27
47
33
9
2
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
8
7
7
7
7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

91
95
95
95
93
91
90
90
88
88
88
88
87
87
88
88
87
85
80
79
80
84
85
88

Pressure (mb)

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

Ozone (du)

298
298
300
302
303
309
308
305
305
304
303
302
304
304
305
305
304
303
304
304
305
306
308
311

Friday 12

Waning Crescent 36%

01:45

13:15

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: 08:37, Set: 16:36, Transit: 12:37. Moon - Rise: 01:45, Set: 13:15. Civil Dark: 17:16 - 07:58. Nautical Dark: 17:58 - 07:15. Astro Dark: 18:38 - 06:35

Total Clouds (% Sky Obscured)

78
58
99
100
100
100
100
100
100
94
89
83
91
90
91
83
76
69
73
74
74
73
78
88

Low Clouds (% Sky Obscured)

29
37
44
44
44
44
47
49
51
80
78
83
44
44
29
37
41
52
50
50
47
43
36
32

Medium Clouds (% Sky Obscured)

36
39
42
66
51
95
99
98
97
76
62
40
85
85
91
83
76
69
73
74
74
73
77
70

High Clouds (% Sky Obscured)

78
58
78
86
93
100
100
100
100
68
37
5
18
9
0
0
0
0
0
5
5
8
7
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
7
7
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
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
2
4
8
21
30
36
34
26
10
15
20
26
27
25
22
17
13
3
4
3
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
85
87
87
87
87
85
87
85
85
85
85
85
87
87
87
88
88
88
87
85
84
85
88

Pressure (mb)

1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1020
1021
1021
1022
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

311
312
313
315
315
315
314
315
316
318
318
319
321
322
322
323
324
324
325
332
339
347
351
356

Saturday 13

Waning Crescent 27%

02:56

13:27

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 OK
16 OK
17 OK
18 Bad

Sun - Rise: 08:38, Set: 16:36, Transit: 12:37. Moon - Rise: 02:56, Set: 13:27. Civil Dark: 17:16 - 07:58. Nautical Dark: 17:58 - 07:16. Astro Dark: 18:38 - 06:36

Total Clouds (% Sky Obscured)

79
69
58
59
63
73
79
84
89
91
91
89
92
94
100
81
62
43
44
41
40
43
43
46

Low Clouds (% Sky Obscured)

30
27
22
14
11
5
5
10
15
35
52
68
74
79
81
68
60
43
44
28
20
25
29
33

Medium Clouds (% Sky Obscured)

49
28
7
7
9
8
15
24
33
48
61
75
81
87
88
79
62
43
44
41
40
34
20
6

High Clouds (% Sky Obscured)

3
2
0
1
0
0
0
0
5
5
10
10
43
73
100
72
45
17
18
18
13
27
43
46

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 (%)

1
0
0
0
0
0
0
0
0
0
0
0
5
10
12
19
22
23
20
11
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
87
87
87
87
87
88
85
85
85
82
81
79
79
79
79
79
79
78
77
75
75
75
75

Pressure (mb)

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

Ozone (du)

360
357
354
351
351
351
350
346
341
337
334
332
329
329
328
327
324
322
319
316
313
311
309
308

Sunday 14

Waning Crescent 19%

04:07

13:40

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

Sun - Rise: 08:38, Set: 16:37, Transit: 12:38. Moon - Rise: 04:07, Set: 13:40. Civil Dark: 17:16 - 07:59. Nautical Dark: 17:58 - 07:17. Astro Dark: 18:38 - 06:37

Total Clouds (% Sky Obscured)

59
73
88
92
95
99
98
96
94
95
95
96
97
96
95
97
98
99

Low Clouds (% Sky Obscured)

44
59
73
72
74
76
76
76
76
79
78
85
84
84
79
88
94
98

Medium Clouds (% Sky Obscured)

6
6
6
8
11
12
16
17
22
29
45
58
67
73
76
75
75
75

High Clouds (% Sky Obscured)

46
46
40
39
48
61
68
50
34
54
78
94
89
84
90
67
43
13

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
5
36
58
79

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
75
75
75
75
75
75
77
78
81
81
79
79
78
78
78
82
87

Pressure (mb)

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

Ozone (du)

306
306
305
304
304
304
304
304
304
304
306
308
310
308
307
306
305
305

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

Generated: 08/12/25 19:28:43. Forecast: 08/12/25 to 14/12/25. Timezone: UTC+1.00