Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 20%

02:24

17:52

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: 06:42, Set: 19:11, Transit: 12:57. Moon - Rise: 02:24, Set: 17:52. Civil Dark: 19:44 - 06:10. Nautical Dark: 20:23 - 05:30. Astro Dark: 21:04 - 04:49

Total Clouds (% Sky Obscured)

100
100
100
100
94
97
91
88
84
83
84
74
87
93
93
86
92
74
76
83
86
88
83
76

Low Clouds (% Sky Obscured)

91
85
100
100
87
94
91
87
84
83
74
74
77
82
87
79
85
74
74
82
85
87
82
75

Medium Clouds (% Sky Obscured)

100
100
100
91
56
25
2
0
0
0
9
0
20
42
30
9
22
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
99
51
50
5
2
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
6
5
4
6
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

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

Precipitation Probability (%)

62
95
95
59
33
5
1
1
1
0
0
0
0
0
0
1
0
0
0
1
2
0
3
0

Precipitation Amount (mm)

0.3
0.9
1.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
15
17
22
24
25
26
26
26
26
26
25
24
24
23
23
22
20
20
19
19
19
19
18

Chance of Frost

Temperature (°C)

15
15
16
16
16
17
17
17
17
17
18
18
18
18
18
18
18
18
18
18
18
18
18
18

Feels Like (°C)

12
12
11
11
11
11
11
11
11
12
12
12
13
14
14
14
14
14
15
15
15
15
15
15

Dew Point (°C)

12
13
13
13
14
14
14
15
15
16
16
16
16
16
16
16
16
16
16
16
17
16
16
16

Relative Humidity (%)

83
83
85
83
87
85
83
85
86
89
89
88
88
88
88
88
86
88
88
89
90
89
90
90

Pressure (mb)

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

Ozone (du)

254
252
253
253
253
255
255
256
258
259
260
262
264
265
265
265
263
262
262
262
262
261
262
261

Thursday 18

Waning Crescent 12%

No Rise

18:12

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
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK

Sun - Rise: 06:44, Set: 19:09, Transit: 12:57. Moon - Rise: No Rise, Set: 18:12. Civil Dark: 19:42 - 06:11. Nautical Dark: 20:21 - 05:32. Astro Dark: 21:02 - 04:51

Total Clouds (% Sky Obscured)

70
80
92
84
86
83
77
71
66
63
56
53
49
56
53
50
49
31
14
14
17
30
28
24

Low Clouds (% Sky Obscured)

70
68
85
66
76
83
77
71
66
61
56
50
47
56
53
50
49
31
14
11
17
28
28
24

Medium Clouds (% Sky Obscured)

0
11
28
22
31
0
0
0
0
0
2
1
2
2
2
2
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
1
25
20
10
12
9
15
1
10

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
2
1
2
13
3
3
13
0
1
0
0
11
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)

18
17
17
17
17
17
18
18
19
19
19
18
18
17
16
14
12
10
9
7
7
7
7
7

Chance of Frost

Temperature (°C)

18
18
18
18
18
18
18
18
19
19
19
19
19
19
19
19
18
18
18
17
17
17
17
17

Feels Like (°C)

15
15
16
15
15
15
15
16
16
15
16
16
16
16
17
18
18
17
16
16
16
16
16
18

Dew Point (°C)

17
17
17
16
16
17
17
17
17
17
17
17
17
17
16
16
16
16
16
16
16
15
15
15

Relative Humidity (%)

92
93
93
92
90
92
90
89
88
88
88
86
86
85
84
86
89
89
90
89
89
88
88
88

Pressure (mb)

1019
1019
1019
1019
1019
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

260
259
259
260
260
259
259
259
259
258
258
258
258
258
258
258
258
257
256
257
256
257
256
256

Friday 19

Waning Crescent 6%

03:44

18:27

03 Good
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
12 OK
13 Good
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: 06:45, Set: 19:07, Transit: 12:56. Moon - Rise: 03:44, Set: 18:27. Civil Dark: 19:40 - 06:13. Nautical Dark: 20:19 - 05:34. Astro Dark: 20:59 - 04:53

Total Clouds (% Sky Obscured)

15
100
96
100
98
61
63
50
31
20
9
90
73
93
86
93
95
85
99
89
79
73
62
57

Low Clouds (% Sky Obscured)

15
15
9
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
3
1
0
0
0
0
0
0
0
4
9
18
8
26
14
17
11
8
5
11
32

High Clouds (% Sky Obscured)

15
93
84
99
98
61
63
49
31
20
9
80
62
89
52
83
89
85
99
88
77
65
47
24

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

Chance of Frost

Temperature (°C)

17
18
18
18
18
18
19
19
20
20
20
20
20
20
20
19
19
18
18
18
17
17
17
17

Feels Like (°C)

17
18
19
19
18
18
19
19
19
19
19
20
20
19
19
19
18
17
18
17
16
16
16
16

Dew Point (°C)

15
16
16
16
16
16
16
16
15
15
14
14
13
12
12
12
11
11
11
11
12
13
13
14

Relative Humidity (%)

88
88
88
88
86
88
85
82
76
71
68
65
62
60
59
63
62
63
65
66
68
76
79
81

Pressure (mb)

1020
1020
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1015

Ozone (du)

256
257
257
257
258
259
259
259
259
259
258
259
258
258
258
259
260
260
259
258
258
259
260
260

Saturday 20

Waning Crescent 2%

05:01

18:39

03 Bad
04 Bad
05 Bad
06 OK
07 Bad
08 Bad
09 Good
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: 06:47, Set: 19:05, Transit: 12:56. Moon - Rise: 05:01, Set: 18:39. Civil Dark: 19:37 - 06:14. Nautical Dark: 20:16 - 05:35. Astro Dark: 20:57 - 04:55

Total Clouds (% Sky Obscured)

52
61
69
37
59
67
13
55
47
68
100
100
100
100
100
100
94
88
80
74
67
64
74
54

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
7
14
24
29
34
40
47
82
81
70
58
45
54
42
39
37
34

Medium Clouds (% Sky Obscured)

48
45
37
37
27
17
3
14
21
48
77
92
100
97
94
92
45
28
10
7
3
0
23
47

High Clouds (% Sky Obscured)

0
0
5
1
5
7
5
40
47
68
100
100
99
97
97
100
76
50
25
26
28
29
49
54

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

Precipitation Probability (%)

0
3
5
2
5
4
1
19
26
34
65
74
76
65
54
49
43
44
30
34
23
6
6
8

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

5
4
4
3
4
4
5
6
8
10
10
11
12
11
11
15
17
18
21
22
20
19
18
19

Chance of Frost

Temperature (°C)

17
17
17
17
17
17
18
19
19
19
19
19
19
19
19
19
18
17
16
16
15
15
14
14

Feels Like (°C)

16
16
16
16
18
17
17
19
18
18
18
16
16
17
16
14
12
11
9
9
9
8
9
8

Dew Point (°C)

14
14
14
14
14
15
15
15
15
15
15
15
15
14
14
13
15
15
13
12
11
10
10
10

Relative Humidity (%)

82
83
85
86
85
85
81
77
77
77
75
75
76
75
73
69
83
87
79
80
74
75
75
76

Pressure (mb)

1015
1014
1014
1014
1013
1013
1013
1012
1012
1012
1011
1011
1010
1010
1009
1009
1009
1009
1009
1009
1010
1010
1011
1011

Ozone (du)

261
261
262
262
264
264
263
263
263
261
261
263
263
263
263
263
265
267
268
271
271
271
273
274

Sunday 21

New Moon 0%

06:15

18:50

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: 06:49, Set: 19:02, Transit: 12:55. Moon - Rise: 06:15, Set: 18:50. Civil Dark: 19:35 - 06:16. Nautical Dark: 20:14 - 05:37. Astro Dark: 20:54 - 04:57

Total Clouds (% Sky Obscured)

69
73
72
65
65
66
76
71
89
86
81
76
73
77
87
92
91
91
90
79
71
68
77
81

Low Clouds (% Sky Obscured)

30
41
52
63
65
66
69
68
67
67
64
62
60
66
72
78
74
71
68
63
59
54
56
53

Medium Clouds (% Sky Obscured)

60
44
37
34
34
39
45
47
41
38
39
38
33
34
37
34
25
19
12
19
27
35
31
33

High Clouds (% Sky Obscured)

69
73
72
65
65
66
76
57
30
0
1
2
5
9
13
22
39
48
48
26
10
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 (%)

6
12
14
8
14
16
15
21
23
25
47
41
32
37
37
31
26
19
6
6
4
1
1
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)

19
17
14
13
12
13
14
14
14
15
14
12
11
10
10
13
17
16
16
16
16
16
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
78
80
80
80
76
76
68
64
67
70
69
69
68
68
68
68
69
70
70
71
73
75
76

Pressure (mb)

1011
1011
1012
1012
1013
1013
1014
1014
1015
1015
1016
1016
1016
1017
1017
1018
1018
1019
1020
1021
1021
1022
1022
1022

Ozone (du)

276
278
278
280
281
282
285
287
288
289
290
292
294
296
297
299
300
301
303
305
306
308
310
310

Monday 22

Waxing Crescent 1%

07:27

19:00

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

Sun - Rise: 06:50, Set: 19:00, Transit: 12:55. Moon - Rise: 07:27, Set: 19:00. Civil Dark: 19:33 - 06:17. Nautical Dark: 20:11 - 05:39. Astro Dark: 20:52 - 04:59

Total Clouds (% Sky Obscured)

85
77
69
58
57
55
37
30
29
34
45
53
61
63
64
61
47
42
39
42
44
48
64
81

Low Clouds (% Sky Obscured)

52
50
45
40
38
36
36
30
29
34
42
39
36
24
12
0
16
28
37
35
29
23
26
31

Medium Clouds (% Sky Obscured)

31
27
23
9
4
3
2
2
3
3
2
5
24
24
29
25
18
7
0
4
7
10
30
49

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
6
10
14
37
63

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

17
17
17
18
18
19
19
20
19
19
19
19
19
19
19
19
18
18
18
19
19
19
19
20

Chance of Frost

Temperature (°C)

10
10
10
10
10
11
12
12
13
14
15
16
16
16
16
15
15
14
14
13
13
12
12
12

Feels Like (°C)

5
5
5
5
5
5
5
5
6
6
7
11
11
11
12
11
11
9
8
8
8
8
8
7

Dew Point (°C)

7
7
6
6
6
6
7
6
6
6
5
6
6
7
7
7
7
7
7
6
7
7
7
7

Relative Humidity (%)

77
80
78
80
78
74
71
66
62
56
51
51
52
52
54
55
57
59
62
63
66
69
71
72

Pressure (mb)

1023
1023
1023
1024
1024
1025
1025
1025
1026
1026
1026
1025
1025
1025
1026
1026
1026
1026
1026
1027
1026
1026
1026
1025

Ozone (du)

310
310
310
310
311
311
312
313
312
312
312
312
312
312
312
312
312
311
311
311
309
306
304
304

Tuesday 23

Waxing Crescent 3%

08:39

19:12

Sun - Rise: 06:52, Set: 18:58, Transit: 12:55. Moon - Rise: 08:39, Set: 19:12. Civil Dark: 19:30 - 06:19. Nautical Dark: 20:09 - 05:40. Astro Dark: 20:49 - 05:00

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

Generated: 17/09/25 03:22:49. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+1.00