Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 21

Waxing Crescent 2%

10:04

16:01

07 OK
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 OK
06 OK

Sun - Rise: 08:06, Set: 16:12, Transit: 12:09. Moon - Rise: 10:04, Set: 16:01. Civil Dark: 16:54 - 07:25. Nautical Dark: 17:39 - 06:42. Astro Dark: 18:21 - 05:59

Total Clouds (% Sky Obscured)

24
53
61
93
100
95
97
100
100
100
100
100
100
100
100
100
100
100
100
88
77
49
39
34

Low Clouds (% Sky Obscured)

0
0
2
1
0
0
61
80
78
75
98
100
88
100
100
100
100
100
100
85
70
48
38
34

Medium Clouds (% Sky Obscured)

24
53
61
92
80
91
82
92
100
100
100
100
100
100
100
100
48
70
29
28
30
0
0
0

High Clouds (% Sky Obscured)

24
53
55
73
99
83
83
100
100
100
100
100
100
90
100
98
55
52
3
0
4
1
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
6
3
4
3
3
9
9
9
9
9
9
9
9

Fog (%)

100
46
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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
1
14
32
39
52
73
95
95
95
95
95
95
52
9
3
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.5
1.2
2.2
1.5
2.1
2.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

2
2
2
3
5
6
7
7
7
7
7
8
8
9
9
10
9
9
8
7
7
6
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
84
80
76
73
71
72
72
73
74
73
76
89
93
94
94
96
96
98
96
98
98
96
96

Pressure (mb)

1026
1026
1026
1026
1026
1025
1024
1023
1022
1022
1021
1020
1019
1018
1017
1017
1016
1015
1014
1014
1014
1013
1013
1013

Ozone (du)

255
252
253
253
248
244
244
245
243
241
241
241
242
246
249
249
254
263
267
268
267
266
264
259

Saturday 22

Waxing Crescent 5%

11:07

16:44

07 OK
08 OK
09 OK
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
06 Bad

Sun - Rise: 08:08, Set: 16:11, Transit: 12:10. Moon - Rise: 11:07, Set: 16:44. Civil Dark: 16:53 - 07:26. Nautical Dark: 17:38 - 06:43. Astro Dark: 18:20 - 06:00

Total Clouds (% Sky Obscured)

38
38
36
94
74
41
58
100
100
100
100
100
100
100
99
100
100
100
100
100
95
99
100
100

Low Clouds (% Sky Obscured)

38
38
36
57
41
35
50
33
38
56
75
82
86
83
81
79
88
94
94
88
67
77
75
73

Medium Clouds (% Sky Obscured)

0
0
2
43
42
13
23
100
100
100
100
99
78
93
90
100
92
100
100
56
30
30
53
100

High Clouds (% Sky Obscured)

0
1
0
0
1
1
5
100
100
100
100
100
100
100
88
100
100
100
66
60
70
75
75
70

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
9
2
2
6
9
9
9
9

Fog (%)

0
0
0
0
0
0
3
3
9
46
1
0
0
0
0
0
0
0
0
0
2
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
2
6
27
34
57
71
93
95
95
95
69
43
25
21
24
61

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.5
0.8
1
1.1
0.5
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
96
96
93
93
91
91
93
96
96
96
94
94
93
93
96
94
96
98
93
83
88
83
86

Pressure (mb)

1013
1013
1013
1013
1013
1012
1011
1010
1010
1009
1008
1008
1007
1006
1005
1004
1002
1000
999
997
997
996
995
995

Ozone (du)

260
263
264
265
265
267
267
263
260
258
258
258
259
263
258
256
260
262
266
269
277
279
277
276

Sunday 23

Waxing Crescent 10%

11:56

17:43

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 OK
06 OK

Sun - Rise: 08:10, Set: 16:10, Transit: 12:10. Moon - Rise: 11:56, Set: 17:43. Civil Dark: 16:52 - 07:28. Nautical Dark: 17:37 - 06:44. Astro Dark: 18:19 - 06:02

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
99
96
100
100
99
97
94
88
72
54
39
26

Low Clouds (% Sky Obscured)

73
89
89
81
97
89
86
89
79
78
79
83
63
64
63
60
60
56
52
48
40
32
21
22

Medium Clouds (% Sky Obscured)

100
100
99
100
99
100
100
88
62
59
94
89
59
89
80
62
58
56
50
44
35
20
24
7

High Clouds (% Sky Obscured)

60
55
60
45
40
41
75
57
65
65
65
59
3
14
70
49
26
23
21
18
14
10
4
1

ISS Passover

Visibility (miles)

7
9
7
9
9
4
5
4
5
9
9
8
8
8
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
Very Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

43
46
35
35
47
75
62
68
76
67
57
63
61
58
38
29
26
19
22
16
18
11
3
3

Precipitation Amount (mm)

0
0
0
0
0
0.3
0
0.2
0.4
0.2
0
0.2
0
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
5
4
7
9
9
10
7
5
4
5
4
5
6
6
7
8
8
8
8
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
89
94
83
82
91
93
94
88
88
90
93
93
91
86
85
82
81
82
81
79
85
80
76

Pressure (mb)

994
994
994
993
992
991
990
989
989
989
989
990
991
991
992
993
993
994
995
996
997
997
998
999

Ozone (du)

277
279
279
280
281
283
283
288
289
291
293
293
294
296
296
298
299
300
301
298
296
297
298
299

Monday 24

Waxing Crescent 17%

12:29

18:56

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

Sun - Rise: 08:12, Set: 16:09, Transit: 12:10. Moon - Rise: 12:29, Set: 18:56. Civil Dark: 16:51 - 07:30. Nautical Dark: 17:36 - 06:46. Astro Dark: 18:19 - 06:03

Total Clouds (% Sky Obscured)

37
43
34
23
10
13
16
22
23
26
38
29
30
33
33
38
43
35
34
27
60
58
27
22

Low Clouds (% Sky Obscured)

20
19
14
13
5
10
14
17
20
22
37
24
25
31
33
38
42
35
34
27
50
48
24
18

Medium Clouds (% Sky Obscured)

3
19
9
4
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
3
7
10
4
4

High Clouds (% Sky Obscured)

1
5
12
16
5
2
2
5
1
0
0
0
1
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 (%)

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 (%)

13
14
4
1
0
2
3
1
6
4
4
8
8
3
9
7
3
7
12
22
24
7
1
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
82
79
79
72
71
71
71
67
66
70
68
71
75
72
67
72
76
82
83
89
89
91
91

Pressure (mb)

1000
1002
1003
1004
1004
1005
1005
1006
1007
1007
1008
1009
1010
1010
1011
1011
1011
1012
1012
1013
1013
1014
1014
1015

Ozone (du)

304
307
309
313
314
314
312
304
299
297
295
294
294
296
298
304
305
306
304
300
297
298
297
295

Tuesday 25

Waxing Crescent 25%

12:51

20:16

07 OK
08 OK
09 OK
10 Good
11 Good
12 Good
13 Good
14 Good
15 OK
16 OK
17 OK
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

Sun - Rise: 08:13, Set: 16:07, Transit: 12:10. Moon - Rise: 12:51, Set: 20:16. Civil Dark: 16:50 - 07:31. Nautical Dark: 17:35 - 06:47. Astro Dark: 18:18 - 06:04

Total Clouds (% Sky Obscured)

22
24
20
17
13
13
14
16
19
22
23
49
46
56
57
58
59
74
86
96
98
99
100
100

Low Clouds (% Sky Obscured)

20
18
15
13
9
7
10
11
12
14
15
20
18
19
23
28
36
40
44
53
53
49
45
44

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
23
27
27
25
27
19
10
5
0
5
10
19
28

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
0
0
19
23
34
31
27
24
47
71
94
96
98
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
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
Very Light Rain
Very Light Rain

Precipitation Probability (%)

1
0
1
0
0
1
0
0
4
2
0
2
0
0
0
0
0
8
16
27
48
58
66
65

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
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
88
86
82
81
79
82
86
88
88
88
89
88
88
89
89
91
93
93
93
93
93
93

Pressure (mb)

1016
1017
1018
1019
1019
1019
1020
1020
1021
1021
1022
1022
1021
1022
1022
1022
1022
1022
1021
1021
1021
1021
1020
1020

Ozone (du)

294
294
294
295
296
294
293
295
293
292
291
285
282
279
276
276
277
277
278
278
278
277
276
275

Wednesday 26

Waxing Crescent 34%

13:07

21:40

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
06 Bad

Sun - Rise: 08:15, Set: 16:06, Transit: 12:11. Moon - Rise: 13:07, Set: 21:40. Civil Dark: 16:49 - 07:33. Nautical Dark: 17:34 - 06:49. Astro Dark: 18:17 - 06:06

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

38
32
30
28
26
29
46
66
73
78
80
79
77
76
79
82
84
88
94
99
99
100
100
96

Medium Clouds (% Sky Obscured)

43
51
67
83
96
91
87
79
68
59
54
61
67
73
78
81
82
88
91
95
95
96
97
79

High Clouds (% Sky Obscured)

100
100
83
60
45
45
40
35
53
75
100
100
100
100
100
100
100
95
91
88
91
95
100
91

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
5
3
5
7
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

54
35
41
41
45
49
39
7
19
29
45
54
51
49
37
22
12
21
19
20
37
38
31
23

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
7
7
7
7
6
6
5
5
5
4
5
5
5
5
4
5
6
6
6
7
8
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
91
89
88
88
88
86
88
90
91
93
91
91
91
91
93
93
94
94
93
95
93
91

Pressure (mb)

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

Ozone (du)

275
275
275
274
273
272
271
269
268
267
266
265
265
265
264
264
264
263
263
263
263
262
261
260

Thursday 27

Waxing Crescent 45%

13:18

23:03

Sun - Rise: 08:17, Set: 16:05, Transit: 12:11. Moon - Rise: 13:18, Set: 23:03. Civil Dark: 16:48 - 07:34. Nautical Dark: 17:33 - 06:50. Astro Dark: 18:17 - 06:07

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: 21/11/25 07:03:34. Forecast: 21/11/25 to 27/11/25. Timezone: UTC+0.00