Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 23

Waxing Crescent 12%

11:13

19:28

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

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

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
98
91
84
83
94
78
81
77
75
84
87
89
91
75
85
94
98
100

Low Clouds (% Sky Obscured)

100
100
100
100
100
99
97
86
79
73
70
68
72
48
61
80
83
86
89
66
75
88
96
100

Medium Clouds (% Sky Obscured)

69
96
94
95
93
85
47
16
25
20
20
16
22
14
11
10
10
8
6
13
7
5
5
40

High Clouds (% Sky Obscured)

72
97
50
37
50
46
7
22
30
16
48
55
60
58
53
48
5
3
3
0
0
3
2
3

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
5
8
4
1
0
4
0
0
0
0
0
0
0
1
0
1
2
4
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
95
93
93
93
93
93
93
93
91
91
90
90
91
91
90
85
88
87
88
90
88
87

Pressure (mb)

1015
1015
1016
1016
1017
1018
1020
1021
1022
1022
1023
1024
1024
1025
1027
1027
1028
1029
1030
1030
1031
1032
1033
1033

Ozone (du)

334
334
332
331
333
335
339
340
340
339
337
336
336
332
325
320
318
315
314
310
308
307
307
306

Wednesday 24

Waxing Crescent 19%

11:25

20:51

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

Sun - Rise: 08:45, Set: 16:01, Transit: 12:23. Moon - Rise: 11:25, Set: 20:51. Civil Dark: 16:46 - 08:00. Nautical Dark: 17:33 - 07:13. Astro Dark: 18:17 - 06:29

Total Clouds (% Sky Obscured)

95
86
75
79
83
99
77
20
51
51
46
56
53
64
59
54
47
33
0
37
48
58
51
59

Low Clouds (% Sky Obscured)

93
84
74
73
81
99
77
19
51
51
46
56
53
63
58
54
47
33
0
37
48
58
51
57

Medium Clouds (% Sky Obscured)

32
11
3
13
14
13
3
2
0
0
0
0
0
2
0
0
1
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

3
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 (%)

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 (%)

11
1
1
0
1
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
91
91
91
93
86
84
84
79
81
81
81
85
90
93
93
86
79
79
82
85
86
89

Pressure (mb)

1034
1034
1034
1035
1035
1036
1037
1038
1038
1038
1038
1038
1038
1039
1039
1039
1039
1039
1039
1039
1039
1039
1039
1039

Ozone (du)

306
306
305
303
302
300
301
304
305
305
305
305
305
305
304
304
305
305
304
305
306
309
310
308

Thursday 25

Waxing Crescent 28%

11:34

22:13

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

Sun - Rise: 08:45, Set: 16:02, Transit: 12:24. Moon - Rise: 11:34, 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)

73
77
74
72
72
78
76
66
78
81
62
39
37
40
34
33
36
39
38
37
36
31
30
28

Low Clouds (% Sky Obscured)

71
74
74
72
72
75
76
64
74
79
60
36
35
39
34
33
36
39
38
37
36
31
30
28

Medium 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

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
1
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 (%)

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
1
1
1
1
1
1
2
1
2
2
2
2
1
0
1
1
1
2
1
2
2
2
2

Dew Point (°C)

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

Relative Humidity (%)

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

Pressure (mb)

1038
1038
1038
1038
1038
1038
1038
1037
1037
1036
1036
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035
1035

Ozone (du)

306
305
303
304
303
304
304
305
305
306
307
308
310
311
312
313
313
313
314
313
313
313
314
314

Friday 26

Waxing Crescent 39%

11:42

23:36

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

Sun - Rise: 08:46, Set: 16:03, Transit: 12:24. Moon - Rise: 11:42, Set: 23:36. Civil Dark: 16:47 - 08:01. Nautical Dark: 17:34 - 07:14. Astro Dark: 18:18 - 06:30

Total Clouds (% Sky Obscured)

19
10
1
10
17
24
30
39
42
33
26
20
18
22
28
36
36
28
35
48
69
66
70
77

Low Clouds (% Sky Obscured)

19
10
0
10
17
24
30
39
42
33
26
17
17
21
28
36
36
27
31
39
45
45
49
54

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
2
2
0
0
0
0
0
0
2
2
18
17
30
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
0
0
1
1
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
91
91
91
91
93
89
88
86
85
86
88
93
93
93
91
91
91
89
91
91
91
93

Pressure (mb)

1035
1035
1035
1035
1035
1035
1036
1036
1036
1036
1036
1036
1036
1036
1036
1037
1037
1037
1037
1038
1038
1038
1038
1038

Ozone (du)

315
315
315
316
317
316
317
318
317
317
318
317
316
315
313
314
314
313
314
313
311
309
307
306

Saturday 27

First Quarter 50%

11:50

01:01

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

Sun - Rise: 08:46, Set: 16:04, Transit: 12:25. Moon - Rise: 11:50, Set: 01:01. Civil Dark: 16:48 - 08:01. Nautical Dark: 17:35 - 07:14. Astro Dark: 18:19 - 06:30

Total Clouds (% Sky Obscured)

75
77
71
65
55
47
43
47
55
57
60
27
35
43
35
49
48
57
56
56
56
54
52
49

Low Clouds (% Sky Obscured)

64
70
71
65
55
44
32
47
55
57
60
16
26
37
24
41
43
52
45
42
43
41
40
38

Medium Clouds (% Sky Obscured)

0
0
0
4
12
4
3
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

51
38
60
55
55
43
17
0
0
0
0
0
1
0
0
0
1
2
5
8
11
12
13
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 (%)

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

8
10
12
12
12
12
11
11
12
13
13
12
11
9
10
11
12
12
13
12
11
11
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
93
85
85
83
82
88
89
85
82
76
81
88
91
89
86
85
86
86
88
88
89
89
89

Pressure (mb)

1038
1038
1038
1039
1039
1039
1040
1040
1040
1040
1040
1039
1039
1040
1040
1040
1041
1041
1041
1041
1041
1041
1041
1041

Ozone (du)

307
305
304
302
301
299
298
296
295
294
292
292
292
292
292
291
291
291
291
292
293
294
294
293

Sunday 28

Waxing Gibbous 61%

11:58

02:30

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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 08:46, Set: 16:05, Transit: 12:25. Moon - Rise: 11:58, Set: 02:30. Civil Dark: 16:49 - 08:01. Nautical Dark: 17:36 - 07:14. Astro Dark: 18:20 - 06:30

Total Clouds (% Sky Obscured)

62
75
90
89
88
79
67
57
50
49
47
45
55
56
53
60
72
79
86
88
86
87
88
84

Low Clouds (% Sky Obscured)

46
52
59
60
59
58
52
46
40
39
47
45
55
56
53
60
72
73
67
61
61
70
77
83

Medium Clouds (% Sky Obscured)

0
0
2
1
2
0
0
0
0
0
0
0
0
0
0
7
14
21
18
9
0
0
0
0

High Clouds (% Sky Obscured)

29
43
57
62
47
47
41
37
23
25
30
36
26
14
1
4
8
11
22
30
33
22
17
11

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
89
88
91
91
93
89
88
85
86
88
89
89
91
91
91
89
89
89
89
89
91
91

Pressure (mb)

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

Ozone (du)

293
292
291
290
290
290
290
290
290
291
290
290
290
291
292
293
293
294
295
294
293
292
290
289

Monday 29

Waxing Gibbous 72%

12:09

No Set

Sun - Rise: 08:46, Set: 16:06, Transit: 12:26. Moon - Rise: 12:09, Set: No Set. Civil Dark: 16:50 - 08:01. Nautical Dark: 17:37 - 07:14. Astro Dark: 18:21 - 06:31

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 23/12/25 03:39:08. Forecast: 23/12/25 to 29/12/25. Timezone: UTC+0.00