Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

New Moon 2%

10:31

16:46

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:44, Set: 15:59, Transit: 12:22. Moon - Rise: 10:31, Set: 16:46. Civil Dark: 16:44 - 07:59. Nautical Dark: 17:31 - 07:12. Astro Dark: 18:15 - 06:28

Total Clouds (% Sky Obscured)

63
71
78
82
100
100
100
100
100
100
100
63
73
69
69
71
66
72
76
100
100
80
91
97

Low Clouds (% Sky Obscured)

62
54
76
69
98
78
92
100
100
68
74
63
70
33
47
50
39
28
58
61
73
76
82
71

Medium Clouds (% Sky Obscured)

63
71
78
82
100
99
92
94
100
93
100
55
43
0
0
0
0
9
2
45
45
8
75
80

High Clouds (% Sky Obscured)

57
71
43
12
55
50
7
92
100
100
100
62
66
61
60
55
65
60
74
100
72
65
79
63

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
5
4
9
2
4
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

15
12
14
95
95
95
95
95
95
95
90
47
27
22
18
20
9
19
10
6
4
8
17
9

Precipitation Amount (mm)

0
0
0
1.3
1.4
1
0.7
1
2.1
0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
16
17
17
17
17
18
18
17
16
15
13
11
8
6
7
6
7
8
9
10
10
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
79
75
77
79
81
84
90
93
91
94
94
91
88
88
90
91
91
91
87
85
85
88
93

Pressure (mb)

1002
1002
1002
1002
1002
1002
1001
1001
1001
1002
1002
1002
1003
1003
1004
1005
1006
1007
1007
1007
1008
1008
1008
1008

Ozone (du)

299
296
298
310
321
335
335
339
341
343
348
354
361
368
370
374
378
382
387
390
390
390
390
390

Sunday 21

Waxing Crescent 6%

10:56

No Set

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:44, Set: 16:00, Transit: 12:22. Moon - Rise: 10:56, Set: No Set. Civil Dark: 16:45 - 08:00. Nautical Dark: 17:31 - 07:13. Astro Dark: 18:15 - 06:29

Total Clouds (% Sky Obscured)

100
100
100
100
98
100
100
100
100
100
100
100
100
100
100
98
100
94
93
93
92
94
89
89

Low Clouds (% Sky Obscured)

88
94
98
71
88
62
74
67
82
87
86
97
93
88
94
95
88
91
89
75
85
91
82
68

Medium Clouds (% Sky Obscured)

97
78
100
99
87
100
100
100
100
100
100
99
100
100
100
95
100
88
89
59
22
30
23
20

High Clouds (% Sky Obscured)

100
100
100
64
60
100
100
100
100
100
100
100
100
70
100
49
83
18
25
45
14
3
3
11

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
2
0
0
0
0
1
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
Light Rain
Light Rain
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

45
76
64
26
6
6
9
23
59
95
95
95
88
82
85
85
41
20
18
2
4
4
2
1

Precipitation Amount (mm)

0
0.7
0.5
0
0
0
0
0
0
0.7
0.9
0.6
0.4
0.4
0.4
0.6
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
91
91
91
93
93
93
95
95
95
96
98
96
96
98
98
95
96
95
90
87
87
88
87

Pressure (mb)

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

Ozone (du)

389
386
382
379
378
376
376
375
375
376
377
378
381
383
382
381
377
372
368
366
364
360
354
351

Monday 22

Waxing Crescent 12%

11:13

18:05

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:45, Set: 16:01, Transit: 12:23. Moon - Rise: 11:13, Set: 18:05. Civil Dark: 16:45 - 08:00. Nautical Dark: 17:32 - 07:13. Astro Dark: 18:16 - 06:29

Total Clouds (% Sky Obscured)

78
81
87
89
86
75
82
78
80
88
89
91
93
97
98
93
96
99
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

68
69
70
69
57
60
68
61
57
66
72
78
82
84
90
88
91
97
98
99
99
100
100
100

Medium Clouds (% Sky Obscured)

4
7
9
11
9
8
7
74
80
26
55
32
45
41
69
35
27
16
6
8
12
30
36
42

High Clouds (% Sky Obscured)

22
5
23
31
39
17
56
60
60
39
35
35
34
33
35
5
32
40
52
27
15
1
1
1

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
29
30
53
63
38
4
4
4
4
4
4
4
4
4
4
4

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
6
6
6
6
6
5
6
5
5
5
5
5
5
6
5
6
5
5
5
5
5

Dew Point (°C)

6
7
7
7
7
7
7
6
6
6
6
6
6
6
6
6
6
6
6
7
7
7
7
6

Relative Humidity (%)

88
90
93
91
91
91
91
91
91
93
93
93
93
93
93
93
93
91
91
91
90
90
90
88

Pressure (mb)

1009
1009
1010
1011
1012
1012
1013
1013
1014
1014
1015
1015
1016
1017
1018
1019
1020
1021
1021
1022
1022
1023
1024
1025

Ozone (du)

352
351
349
346
343
339
336
337
336
333
330
333
330
327
325
326
325
329
327
331
333
331
328
325

Tuesday 23

Waxing Crescent 19%

11:25

19:28

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:45, Set: 16:01, Transit: 12:23. Moon - Rise: 11:25, Set: 19:28. Civil Dark: 16:46 - 08:00. Nautical Dark: 17:32 - 07:13. Astro Dark: 18:16 - 06:29

Total Clouds (% Sky Obscured)

100
98
71
67
71
79
74
91
99
100
100
100
100
99
97
94
95
93
92
89
87
75
76
72

Low Clouds (% Sky Obscured)

96
90
71
67
71
79
74
91
98
100
100
100
100
94
88
76
80
80
79
62
61
65
68
63

Medium Clouds (% Sky Obscured)

47
38
19
15
20
24
29
37
46
52
58
57
51
50
45
29
25
24
17
15
8
1
1
1

High Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
1
3
5
6
4
5
39
60
13
35
30
40
31
55
15

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 (%)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

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
5
5
4
5
6
3
14
18
11
19
23
17
14
11
7
13
8
15
7
14
2
4
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
88
88
88
88
87
88
90
90
90
90
90
90
91
90
90
90
88
87
85
81
79
78
78

Pressure (mb)

1026
1026
1027
1028
1029
1029
1030
1030
1030
1031
1031
1032
1033
1033
1034
1035
1035
1036
1036
1036
1036
1036
1036
1036

Ozone (du)

325
327
329
330
333
333
333
331
331
332
334
335
334
330
323
318
314
312
308
305
305
306
305
306

Wednesday 24

Waxing Crescent 28%

11:34

20:51

17 OK
18 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 OK
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

Sun - Rise: 08:45, Set: 16:02, Transit: 12:24. Moon - Rise: 11:34, Set: 20:51. Civil Dark: 16:47 - 08:01. Nautical Dark: 17:33 - 07:14. Astro Dark: 18:17 - 06:30

Total Clouds (% Sky Obscured)

45
45
48
61
59
62
57
49
46
49
50
55
69
85
87
85
83
81
79
75
70
67
75
85

Low Clouds (% Sky Obscured)

42
37
40
50
54
62
57
49
46
49
50
55
69
85
87
85
83
81
75
75
70
67
75
85

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
2
0
0
0
0
0
0
0
0
0
2
4
4
1
0
0
0
0

High Clouds (% Sky Obscured)

6
11
3
0
0
0
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
9
9
9
9
9
9

Fog (%)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

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
1
1
0
2
8
1
0
0
0
1
2
1
8
8
5
7
7
3
5
5
1
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
82
85
86
88
88
80
79
80
77
76
76
76
71
71
72
71
70
68
67
68
70
71
71

Pressure (mb)

1037
1037
1037
1037
1037
1037
1037
1036
1036
1036
1036
1036
1035
1035
1034
1034
1034
1034
1033
1033
1033
1032
1032
1032

Ozone (du)

307
309
313
319
324
324
321
318
316
315
313
313
314
315
315
316
316
316
317
318
319
320
322
321

Thursday 25

Waxing Crescent 26%

11:42

22:13

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:46, Set: 16:03, Transit: 12:24. Moon - Rise: 11:42, Set: 22:13. Civil Dark: 16:47 - 08:01. Nautical Dark: 17:34 - 07:14. Astro Dark: 18:18 - 06:30

Total Clouds (% Sky Obscured)

95
91
86
77
66
56
48
48
49
49
59
62
62
63
64
62
65
67
69
75
81
88
86
80

Low Clouds (% Sky Obscured)

92
85
77
68
59
50
41
42
49
49
59
62
62
63
64
62
65
67
69
75
81
88
86
80

Medium Clouds (% Sky Obscured)

2
1
2
0
0
0
0
0
0
0
0
1
1
1
0
0
0
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
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 (%)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

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 (%)

3
6
6
3
7
7
1
3
2
0
1
1
0
2
2
0
3
3
1
3
3
1
4
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
72
75
79
83
83
83
85
85
85
83
83
83
83
83
82
82
79
78
76
76
76
76
79

Pressure (mb)

1032
1031
1031
1031
1032
1032
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1033
1033
1033
1034
1034
1034
1034
1035

Ozone (du)

321
320
321
322
322
325
327
329
330
330
330
330
330
330
330
330
330
330
331
331
330
329
328
327

Friday 26

Waxing Crescent 39%

11:50

23:36

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

Sun - Rise: 08:46, Set: 16:04, Transit: 12:25. Moon - Rise: 11:50, Set: 23:36. Civil Dark: 16:48 - 08:01. Nautical Dark: 17:34 - 07:14. Astro Dark: 18:18 - 06:30

Total Clouds (% Sky Obscured)

70
56
36
23
22
24
28
39
47
52
59
67
75
68
61
54
64
76
87

Low Clouds (% Sky Obscured)

70
56
36
23
22
24
28
39
47
52
59
67
70
68
61
54
64
64
68

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
9
18
30
25
24
21
14
6
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
4
4
4
3
1
0
0
1
1

ISS Passover

Visibility (miles)

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

Fog (%)

4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

Precipitation Type

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

Precipitation Probability (%)

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

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
2
2
2
2
1
1
1
1
1
1
1
1
2
1
1
1
2
2

Relative Humidity (%)

83
88
88
89
91
89
88
88
88
88
86
88
89
89
88
86
85
83
80

Pressure (mb)

1035
1035
1036
1036
1037
1037
1037
1038
1038
1038
1038
1038
1039
1039
1039
1039
1040
1040
1040

Ozone (du)

325
324
325
326
327
326
326
325
325
325
325
324
323
321
320
318
316
312
307

Forecast for Cathedral's Quarter, Belfast, United Kingdom (54.60,-5.93)

Generated: 20/12/25 17:48:08. Forecast: 20/12/25 to 26/12/25. Timezone: UTC+0.00