Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

16:10

04:35

02 Good
03 Good
04 OK
05 OK
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 OK
19 OK
20 Good
21 Good
22 Bad
23 Bad
00 OK
01 OK

Sun - Rise: 05:52, Set: 20:50, Transit: 13:21. Moon - Rise: 16:10, Set: 04:35. Civil Dark: 21:31 - 05:10. Nautical Dark: 22:26 - 04:16. Astro Dark: 23:39 - 03:03

Total Clouds (% Sky Obscured)

5
0
9
18
73
54
74
74
77
82
80
94
93
92
90
53
34
18
3
8
53
51
34
29

Low Clouds (% Sky Obscured)

5
0
9
18
48
27
51
72
77
82
80
88
84
69
82
45
28
13
0
0
1
1
16
23

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
8
15
74
84
70
9
0
0
0
0
3
2
0
2

High Clouds (% Sky Obscured)

0
0
9
18
34
42
57
11
60
70
65
51
29
3
3
3
3
3
3
8
53
51
16
6

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
3
2
1
1
8
2
0
1
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)

3
3
2
2
3
3
3
5
7
8
9
9
9
10
11
11
11
10
9
6
4
3
3
3

Chance of Frost

Temperature (°C)

7
6
6
5
5
6
8
11
12
13
14
14
15
15
15
15
15
14
13
11
9
8
7
6

Feels Like (°C)

7
6
6
4
3
5
7
9
10
10
12
12
12
12
13
12
13
13
12
10
9
6
5
6

Dew Point (°C)

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

Relative Humidity (%)

91
91
93
94
94
94
91
87
83
79
75
70
69
72
68
72
73
78
84
91
93
93
93
91

Pressure (mb)

1026
1026
1026
1026
1026
1027
1027
1028
1028
1028
1028
1028
1027
1027
1027
1027
1027
1028
1028
1029
1029
1029
1029
1029

Ozone (du)

385
387
382
380
378
377
376
376
377
377
376
375
372
373
372
369
370
367
367
366
367
366
366
367

Tuesday 28

Waxing Gibbous 93%

17:29

04:42

02 OK
03 OK
04 OK
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 OK
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good

Sun - Rise: 05:49, Set: 20:52, Transit: 13:21. Moon - Rise: 17:29, Set: 04:42. Civil Dark: 21:33 - 05:08. Nautical Dark: 22:29 - 04:13. Astro Dark: 23:44 - 02:58

Total Clouds (% Sky Obscured)

30
28
35
51
65
76
73
58
39
46
52
61
55
54
58
50
29
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

26
28
35
51
65
76
73
56
37
44
48
59
52
52
58
50
29
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

2
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)

5
2
2
2
2
2
2
3
2
3
4
4
3
6
4
1
3
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 (%)

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)

3
2
2
2
3
3
5
9
11
12
12
12
12
12
12
10
9
8
5
5
5
5
6
7

Chance of Frost

Temperature (°C)

5
5
5
4
4
5
8
10
11
12
13
13
13
14
14
13
13
12
11
9
8
7
7
7

Feels Like (°C)

5
5
5
4
3
5
7
7
8
10
10
11
11
11
11
11
11
11
11
10
8
7
7
6

Dew Point (°C)

4
4
4
4
3
5
7
7
6
7
7
8
8
8
8
8
7
8
9
8
7
6
6
6

Relative Humidity (%)

91
94
94
94
94
100
91
80
71
70
69
69
68
67
68
69
69
76
84
90
90
91
91
94

Pressure (mb)

1029
1030
1030
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1030
1030

Ozone (du)

366
367
366
365
365
364
363
362
362
362
363
362
361
362
362
362
362
362
362
363
363
362
362
363

Wednesday 29

Waxing Gibbous 97%

18:47

04:49

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

Sun - Rise: 05:47, Set: 20:54, Transit: 13:21. Moon - Rise: 18:47, Set: 04:49. Civil Dark: 21:36 - 05:05. Nautical Dark: 22:32 - 04:09. Astro Dark: 23:49 - 02:52

Total Clouds (% Sky Obscured)

0
4
0
0
0
0
0
0
4
5
6
0
0
0
2
14
20
25
25
20
20
20
25
15

Low Clouds (% Sky Obscured)

0
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

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
3
5
4
0
0
0
2
14
20
25
25
20
20
20
25
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
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)

6
6
6
6
7
7
9
11
13
14
14
14
14
14
14
14
13
12
12
12
13
13
14
14

Chance of Frost

Temperature (°C)

7
6
5
5
5
6
7
9
11
12
13
14
14
14
15
15
14
14
12
11
10
10
9
8

Feels Like (°C)

5
4
4
4
5
5
6
7
9
10
10
10
11
11
12
12
11
10
9
7
6
4
4
3

Dew Point (°C)

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

Relative Humidity (%)

94
91
93
94
94
93
85
81
75
69
63
59
56
55
55
59
67
71
76
79
78
78
77
74

Pressure (mb)

1030
1030
1030
1030
1030
1030
1030
1030
1030
1029
1029
1029
1028
1028
1027
1027
1026
1026
1026
1026
1026
1026
1026
1025

Ozone (du)

364
365
366
367
367
367
369
371
373
374
376
377
381
385
386
387
386
385
382
379
379
378
379
378

Thursday 30

Waxing Gibbous 99%

20:05

04:57

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

Sun - Rise: 05:45, Set: 20:56, Transit: 13:20. Moon - Rise: 20:05, Set: 04:57. Civil Dark: 21:38 - 05:03. Nautical Dark: 22:34 - 04:06. Astro Dark: 23:54 - 02:47

Total Clouds (% Sky Obscured)

30
35
30
20
25
30
29
25
23
25
28
24
12
16
30
25
25
57
80
100
100
100
100
94

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
19
21
27
6
3
11
30
25
25
25
20
20
25
30
35
35

Medium Clouds (% Sky Obscured)

9
1
0
0
0
1
4
14
10
25
10
9
8
15
30
25
25
23
28
4
90
90
45
94

High Clouds (% Sky Obscured)

30
25
25
20
25
30
29
25
18
7
24
24
9
8
6
5
5
53
80
100
94
88
84
73

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
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
2
1
1
3
5
8
10
9
4
5
9
26
16
22
68

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
0.3

Wind Speed/Direction (mph)

13
13
13
14
13
13
15
18
20
20
20
21
20
19
17
15
11
9
9
8
7
6
7
6

Chance of Frost

Temperature (°C)

8
7
7
7
7
7
9
10
12
12
13
14
15
16
16
15
14
14
13
13
12
11
11
11

Feels Like (°C)

2
2
1
1
2
2
4
5
6
6
7
8
10
12
13
12
13
13
11
11
10
11
10
10

Dew Point (°C)

4
4
4
4
4
5
5
6
7
7
8
8
8
9
10
10
11
11
10
8
8
8
8
8

Relative Humidity (%)

75
81
82
81
81
82
77
74
72
72
70
69
62
63
68
73
80
82
79
75
75
81
81
84

Pressure (mb)

1025
1025
1024
1024
1024
1024
1023
1023
1023
1023
1022
1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

377
377
377
376
375
375
376
376
375
375
376
378
378
377
377
375
374
374
373
374
373
372
371
369

Friday 1

Full Moon 100%

21:25

05:07

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 05:43, Set: 20:58, Transit: 13:20. Moon - Rise: 21:25, Set: 05:07. Civil Dark: 21:40 - 05:01. Nautical Dark: 22:37 - 04:03. Astro Dark: 23:59 - 02:41

Total Clouds (% Sky Obscured)

87
80
79
79
78
84
91
95
95
98
100
100
100
100
91
94
92
97
87
85
90
86
86
86

Low Clouds (% Sky Obscured)

35
40
57
71
78
82
80
77
70
68
65
64
67
75
53
34
18
23
32
44
45
46
46
46

Medium Clouds (% Sky Obscured)

87
80
79
61
24
63
20
19
12
5
0
0
0
0
5
13
25
40
40
40
35
15
15
10

High Clouds (% Sky Obscured)

64
45
44
8
13
25
42
56
65
70
70
70
75
75
70
70
70
80
80
80
69
68
63
64

ISS Passover

Visibility (miles)

3
2
2
6
5
1
5
0
8
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

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
None

Precipitation Probability (%)

95
95
91
28
20
26
16
6
7
3
11
16
18
19
20
22
22
19
16
4
5
5
0
0

Precipitation Amount (mm)

1.3
1.9
0.6
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
8
9
8
8
8
8
9
10
9
9
9
8
6
4
4
3
3

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
10
11
12
13
14
15
15
15
16
15
15
14
13
11
10
9
8
8

Feels Like (°C)

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

Dew Point (°C)

9
10
10
10
10
9
10
11
11
12
12
13
13
12
13
12
12
12
11
10
9
8
7
7

Relative Humidity (%)

91
98
98
100
98
98
98
96
96
92
87
86
85
82
82
82
83
83
86
88
93
93
95
96

Pressure (mb)

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

Ozone (du)

367
370
372
378
379
374
374
375
375
373
372
373
374
374
375
375
375
375
376
377
378
383
388
392

Saturday 2

Waning Gibbous 99%

22:43

05:20

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 05:41, Set: 20:59, Transit: 13:20. Moon - Rise: 22:43, Set: 05:20. Civil Dark: 21:42 - 04:58. Nautical Dark: 22:40 - 04:00. Astro Dark: 00:05 - 02:35

Total Clouds (% Sky Obscured)

86
86
81
73
65
67
58
61
68
83
96
97
98
99
99
99
100
97
95
92
92
93
93
95

Low Clouds (% Sky Obscured)

44
42
48
45
48
50
52
60
63
68
69
61
59
58
57
55
53
52
51
55
64
72
77
79

Medium Clouds (% Sky Obscured)

5
5
5
5
10
10
15
19
17
15
13
15
16
18
38
50
58
60
61
59
56
51
46
50

High Clouds (% Sky Obscured)

64
70
65
65
65
61
42
21
39
56
59
51
49
46
61
76
100
74
47
24
20
18
22
17

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

Precipitation Probability (%)

0
0
4
7
19
32
34
36
40
38
33
29
34
42
33
30
28
29
33
32
26
23
7
11

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
2
2
2
2
2
2
3
4
5
6
7
7
8
9
8
8
8
7
6
6
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
8
8
8
7
7
8
8
9
10
10
11
12
12
12
11
12
12
9
9
10
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
96
98
91
84
80
77
75
74
77
81
87
90
91
95
95
95
93
93
93
91

Pressure (mb)

1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013

Ozone (du)

390
387
385
383
382
380
379
377
376
375
374
373
372
371
369
369
368
367
369
370
372
372
373
374

Sunday 3

Waning Gibbous 98%

23:58

05:38

Sun - Rise: 05:39, Set: 21:01, Transit: 13:20. Moon - Rise: 23:58, Set: 05:38. Civil Dark: 21:44 - 04:56. Nautical Dark: 22:43 - 03:57. Astro Dark: 00:11 - 02:29

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: 27/04/26 02:40:44. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+1.00