Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 18

Waning Gibbous 69%

02:26

09:09

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
19 Bad
20 OK

Sun - Rise: 05:58, Set: 20:05, Transit: 13:02. Moon - Rise: 02:26, Set: 09:09. Civil Dark: 20:40 - 05:23. Nautical Dark: 21:23 - 04:39. Astro Dark: 22:13 - 03:48

Total Clouds (% Sky Obscured)

97
98
100
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
99
88
43
38

Low Clouds (% Sky Obscured)

80
67
62
74
82
33
70
100
81
31
0
0
13
11
0
0
0
0
4
29
9
0
0
0

Medium Clouds (% Sky Obscured)

95
94
97
100
97
91
93
98
98
98
89
84
100
98
84
86
90
75
50
52
63
69
43
38

High Clouds (% Sky Obscured)

85
66
100
100
100
100
100
100
100
86
100
100
100
97
91
43
100
100
100
100
58
43
40
1

ISS Passover

Visibility (miles)

4
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

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

Precipitation Probability (%)

79
95
33
27
39
75
70
75
56
40
56
52
58
44
38
34
11
2
0
1
2
3
1
0

Precipitation Amount (mm)

0.4
0.9
0
0
0
0.5
0
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
14
19
22
24
24
21
21
22
22
22
23
22
21
20
19
17
16
17
17
16
17
19
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
10
9
9
8
8
8
8
8
8
8
8
8
8
8
9
9
8
9
8
8
6

Relative Humidity (%)

91
95
88
87
86
84
83
84
83
83
81
81
81
84
83
80
79
76
74
68
70
71
75
73

Pressure (mb)

1007
1007
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1005
1005
1005
1006
1006

Ozone (du)

373
373
371
371
373
372
372
372
373
375
376
376
379
380
381
382
381
380
380
379
377
376
376
375

Saturday 19

Waning Gibbous 59%

03:07

10:19

21 Bad
22 Bad
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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 Bad
20 OK

Sun - Rise: 05:56, Set: 20:07, Transit: 13:01. Moon - Rise: 03:07, Set: 10:19. Civil Dark: 20:42 - 05:21. Nautical Dark: 21:25 - 04:36. Astro Dark: 22:15 - 03:45

Total Clouds (% Sky Obscured)

47
42
30
68
72
69
77
96
97
92
91
90
100
94
100
100
98
100
96
76
53
1
0
3

Low Clouds (% Sky Obscured)

0
0
0
44
55
53
63
89
88
66
65
60
79
58
100
100
91
95
60
35
0
0
0
0

Medium Clouds (% Sky Obscured)

47
18
28
22
29
40
49
42
51
60
73
83
80
75
87
88
96
89
91
76
53
1
0
3

High Clouds (% Sky Obscured)

0
1
2
0
1
0
1
0
2
20
20
16
99
30
25
83
25
12
0
1
1
1
0
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
8
9
8
7

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
Very Light Rain
None
None
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
4
16
11
8
12
11
18
5
1
0
4
6
17
29
38
33
41
50
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.3
0.2

Wind Speed/Direction (mph)

20
20
20
20
19
19
19
19
19
19
18
18
18
18
17
16
13
11
11
9
8
6
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
2
3
3
3
2
1
2
2
2
1
2
3
5
6
7
8
9
9
9
10
10
10
9

Dew Point (°C)

5
5
5
4
4
4
4
4
4
4
4
5
6
7
8
9
9
10
11
11
12
12
11
11

Relative Humidity (%)

72
73
75
75
74
74
78
75
75
79
79
81
81
81
81
79
80
83
89
90
95
95
96
95

Pressure (mb)

1006
1006
1006
1006
1006
1005
1005
1005
1005
1005
1005
1006
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

375
376
377
377
377
376
374
374
374
372
370
369
368
368
367
366
366
365
365
366
367
367
367
367

Sunday 20

Waning Gibbous 48%

03:38

11:38

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

Sun - Rise: 05:54, Set: 20:08, Transit: 13:01. Moon - Rise: 03:38, Set: 11:38. Civil Dark: 20:44 - 05:19. Nautical Dark: 21:27 - 04:34. Astro Dark: 22:18 - 03:42

Total Clouds (% Sky Obscured)

0
21
24
23
37
36
43
39
50
50
45
20
15
62
41
52
64
84
100
78
52
25
18
9

Low Clouds (% Sky Obscured)

0
21
24
19
34
33
33
23
41
41
39
6
5
51
33
46
42
40
40
39
34
25
18
9

Medium Clouds (% Sky Obscured)

0
21
21
7
5
5
43
39
40
30
45
20
2
2
41
4
6
53
95
14
10
0
0
0

High Clouds (% Sky Obscured)

0
3
11
1
1
1
1
1
1
0
21
20
15
3
1
2
41
71
100
70
30
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
8
9
8
6
8
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
1
2
2
6
6
6
6
6
6
6
6

Precipitation Type

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

Precipitation Probability (%)

19
4
4
4
8
23
45
46
47
47
63
57
25
7
14
11
18
24
24
24
20
15
3
3

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.3
0.2
0
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
3
2
2
2
3
4
4
3
4
6
6
7
7
8
11
13
14
15
16
15
15
15
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
88
87
84
85
85
87
90
93
91
93
95
93
92
87
83
80
80
81
81
80
79
80
83

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1008
1009
1009
1009
1010
1010
1010
1010
1011
1011
1012

Ozone (du)

367
368
368
368
368
368
367
368
371
372
370
366
364
364
366
367
368
369
370
374
376
376
374
371

Monday 21

Third Quarter 37%

04:00

13:01

21 Good
22 OK
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 OK
19 Bad
20 Bad

Sun - Rise: 05:52, Set: 20:10, Transit: 13:01. Moon - Rise: 04:00, Set: 13:01. Civil Dark: 20:46 - 05:16. Nautical Dark: 21:29 - 04:31. Astro Dark: 22:20 - 03:39

Total Clouds (% Sky Obscured)

2
19
66
82
87
90
92
93
83
48
64
61
100
100
100
100
83
64
41
41
37
41
42
73

Low Clouds (% Sky Obscured)

1
19
34
38
42
44
57
51
28
23
17
13
9
17
26
34
30
19
1
3
8
6
13
23

Medium Clouds (% Sky Obscured)

0
1
25
30
35
40
59
65
49
7
23
46
62
67
74
90
80
64
41
39
32
29
27
54

High Clouds (% Sky Obscured)

0
0
5
5
19
33
40
45
54
48
64
61
100
100
100
100
77
50
25
28
30
8
6
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 (%)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

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 (%)

2
5
8
4
10
8
1
3
5
1
1
3
2
3
4
2
2
3
2
2
2
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
87
84
84
82
82
81
80
80
80
81
83
78
79
76
77
79
79
79
79
77
80
81
83

Pressure (mb)

1013
1013
1014
1014
1014
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

372
371
370
372
374
376
378
377
376
376
375
378
378
378
378
378
377
378
379
380
380
386
383
380

Tuesday 22

Waning Crescent 26%

04:17

14:26

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
19 Bad
20 Bad

Sun - Rise: 05:50, Set: 20:11, Transit: 13:01. Moon - Rise: 04:17, Set: 14:26. Civil Dark: 20:47 - 05:14. Nautical Dark: 21:31 - 04:29. Astro Dark: 22:23 - 03:36

Total Clouds (% Sky Obscured)

88
92
96
100
100
100
100
92
84
74
92
84
79
76
75
75
83
91
99
88
79
70
71
72

Low Clouds (% Sky Obscured)

34
53
71
89
93
96
100
86
72
59
90
80
70
61
56
51
50
47
49
40
36
30
37
45

Medium Clouds (% Sky Obscured)

73
90
95
98
99
85
99
71
46
37
75
72
66
76
75
75
83
89
98
88
79
70
71
72

High Clouds (% Sky Obscured)

20
20
15
15
43
70
100
72
40
15
10
5
5
5
10
10
15
15
15
11
10
8
6
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 (%)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

Precipitation Type

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

Precipitation Probability (%)

0
8
18
36
56
71
80
65
51
19
51
43
25
31
27
17
32
35
29
32
33
30
27
19

Precipitation Amount (mm)

0
0
0
0
0.2
0.4
0.6
0.3
0.2
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
81
80
79
79
79
83
84
84
85
87
84
84
83
81
80
78
76
75
73
76
79
81
84

Pressure (mb)

1019
1019
1018
1018
1018
1018
1017
1017
1017
1017
1017
1018
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1018
1018

Ozone (du)

378
377
376
373
372
371
371
374
375
374
374
376
378
380
380
380
380
380
381
381
381
381
382
382

Wednesday 23

Waning Crescent 17%

04:32

15:52

21 Bad
22 Bad
23 Bad
00 OK
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
19 Bad
20 Bad

Sun - Rise: 05:48, Set: 20:13, Transit: 13:01. Moon - Rise: 04:32, Set: 15:52. Civil Dark: 20:49 - 05:12. Nautical Dark: 21:33 - 04:26. Astro Dark: 22:26 - 03:33

Total Clouds (% Sky Obscured)

74
61
45
27
44
58
75
63
53
51
62
70
79
85
91
97
95
92
89
77
64
52
68
81

Low Clouds (% Sky Obscured)

53
47
41
27
44
58
75
63
53
51
58
57
56
67
81
94
79
62
50
43
36
33
36
44

Medium Clouds (% Sky Obscured)

74
61
45
27
44
58
69
63
53
51
53
52
69
56
40
19
19
17
16
15
11
7
12
17

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
0
0
0
0
0
0
1
2
2
2
3
3
5
7
9
12
19

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 (%)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

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
7
8
5
11
13
10
19
20
17
17
15
11
14
14
9
12
10
2
8
11
12
14
14

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
88
90
90
90
90
90
90
88
90
87
85
83
80
78
76
72
71
70
72
73
75
77

Pressure (mb)

1019
1019
1019
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1022

Ozone (du)

381
381
380
379
377
379
380
382
381
381
381
380
379
377
375
373
371
372
372
372
371
369
367
367

Thursday 24

Waning Crescent 9%

04:46

17:19

21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 Bad
12 Bad

Sun - Rise: 05:46, Set: 20:15, Transit: 13:01. Moon - Rise: 04:46, Set: 17:19. Civil Dark: 20:51 - 05:10. Nautical Dark: 21:35 - 04:24. Astro Dark: 22:29 - 03:29

Total Clouds (% Sky Obscured)

93
94
94
95
82
70
57
45
31
18
19
20
20
34
44
58

Low Clouds (% Sky Obscured)

51
48
38
35
35
38
40
24
12
1
13
20
20
31
35
39

Medium Clouds (% Sky Obscured)

22
16
14
8
17
22
26
23
19
18
19
20
20
34
44
58

High Clouds (% Sky Obscured)

24
16
10
1
1
1
1
0
0
0
15
20
20
34
44
35

ISS Passover

Visibility (miles)

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

Fog (%)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6

Precipitation Type

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

Precipitation Probability (%)

11
13
12
5
9
8
1
2
3
3
4
4
1
14
19
23

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
81
84
85
85
87
87
87
87
85
79
73
67
66
64

Pressure (mb)

1022
1022
1022
1022
1023
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023

Ozone (du)

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

Forecast for Selsey, West Sussex, United Kingdom (50.73,-0.79)

Generated: 18/04/25 20:33:48. Forecast: 18/04/25 to 24/04/25. Timezone: UTC+1.00