Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 30

Waxing Gibbous 77%

13:25

No Set

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

Sun - Rise: 07:43, Set: 16:00, Transit: 11:52. Moon - Rise: 13:25, Set: No Set. Civil Dark: 16:39 - 07:04. Nautical Dark: 17:20 - 06:23. Astro Dark: 18:00 - 05:43

Total Clouds (% Sky Obscured)

95
82
75
46
0
0
0
0
0
0
26
47
60
25
100
91
67
89
67
99
100
100
100
100

Low Clouds (% Sky Obscured)

54
52
14
0
0
0
0
0
0
0
26
47
53
24
0
0
39
37
40
31
39
64
56
49

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
9
0
0
7
11
19
21
68
67
96
100
87

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
98
82
63
54
58
80
82
100
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
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
1
4
5
6
5
4
8
9
17
8
17
6
28

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
9
9
7
8
8
8
10
10
11
10
9
7
6
5
4
4
5
5
7
9
12
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
88
78
82
86
86
86
83
80
75
70
71
74
79
86
90
89
89
86
86
87
84
77
78

Pressure (mb)

1009
1010
1011
1012
1012
1013
1014
1015
1016
1016
1016
1016
1016
1016
1017
1017
1017
1016
1016
1016
1015
1015
1014
1013

Ozone (du)

343
343
337
337
341
342
340
336
335
331
327
321
319
313
308
303
298
292
288
285
282
282
280
277

Monday 1

Waxing Gibbous 86%

13:40

02:54

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: 07:44, Set: 16:00, Transit: 11:52. Moon - Rise: 13:40, Set: 02:54. Civil Dark: 16:38 - 07:06. Nautical Dark: 17:20 - 06:24. Astro Dark: 17:59 - 05:44

Total Clouds (% Sky Obscured)

96
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
92

Low Clouds (% Sky Obscured)

47
81
100
91
85
90
100
92
92
74
86
79
87
84
78
72
75
99
100
63
81
91
66
45

Medium Clouds (% Sky Obscured)

93
100
75
92
100
100
100
100
100
48
100
73
74
82
71
100
100
100
100
97
100
95
98
88

High Clouds (% Sky Obscured)

71
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
100
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

37
46
38
57
92
95
56
46
20
7
3
14
28
42
46
78
90
95
95
95
62
81
95
58

Precipitation Amount (mm)

0
0.2
0
0.2
0.6
0.7
0
0
0
0
0
0
0
0
0
0.5
0.6
1.2
2
0.7
0.2
0.4
1
0

Wind Speed/Direction (mph)

18
19
20
21
21
22
22
23
24
24
25
24
25
25
26
27
27
27
26
23
20
10
10
10

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
10
10
10
11
11
11
11
11
11
11
11
11
11
11
11
10
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
84
85
84
84
88
91
88
88
88
87
87
86
86
84
84
86
87
90
90
91
93
90
88

Pressure (mb)

1013
1012
1011
1010
1010
1009
1008
1008
1007
1006
1005
1004
1003
1002
1002
1001
1001
1000
1000
1000
1000
1000
1001
1001

Ozone (du)

278
276
274
273
271
268
266
266
264
264
264
265
264
264
263
264
265
265
267
268
267
270
272
274

Tuesday 2

Waxing Gibbous 94%

13:58

04:23

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: 07:45, Set: 15:59, Transit: 11:52. Moon - Rise: 13:58, Set: 04:23. Civil Dark: 16:38 - 07:07. Nautical Dark: 17:19 - 06:25. Astro Dark: 17:59 - 05:45

Total Clouds (% Sky Obscured)

93
98
100
100
94
30
16
11
36
62
62
80
87
50
75
40
30
37
66
73
56
58
70
69

Low Clouds (% Sky Obscured)

32
0
9
24
25
28
16
11
36
52
61
49
57
44
61
40
30
26
57
63
56
50
45
39

Medium Clouds (% Sky Obscured)

90
90
100
100
94
30
2
0
31
6
4
28
72
21
66
4
4
7
0
0
0
6
9
12

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
11
4
0
0
5
15
0
0
0
0
30
20
15
3
0
2
4

ISS Passover

Visibility (miles)

9
9
8
8
6
3
6
5
5
7
8
7
8
8
8
9
6
7
7
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
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
None
None
None
None
Very Light Rain
None
None
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

42
33
42
49
77
73
57
64
61
43
42
38
34
46
42
37
49
46
27
12
16
7
11
11

Precipitation Amount (mm)

0
0
0
0
0.5
0.5
0.3
0.4
0.4
0
0
0
0
0.2
0
0
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
90
91
91
93
94
91
85
81
78
78
81
84
90
91
91
91
93
88
82
81
79
84

Pressure (mb)

1002
1002
1002
1002
1003
1003
1004
1004
1005
1004
1005
1005
1005
1006
1006
1006
1007
1007
1007
1008
1008
1008
1008
1008

Ozone (du)

276
280
283
286
288
290
292
294
295
297
297
296
296
295
298
303
304
305
307
308
308
307
307
307

Wednesday 3

Waxing Gibbous 98%

14:23

05:57

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

Sun - Rise: 07:47, Set: 15:59, Transit: 11:53. Moon - Rise: 14:23, Set: 05:57. Civil Dark: 16:37 - 07:08. Nautical Dark: 17:19 - 06:26. Astro Dark: 17:59 - 05:47

Total Clouds (% Sky Obscured)

74
87
91
80
62
35
14
24
32
34
24
19
15
15
19
24
64
91
100
100
100
100
98
97

Low Clouds (% Sky Obscured)

33
38
40
42
30
20
7
24
32
34
24
19
15
15
19
24
31
37
44
38
38
38
42
45

Medium Clouds (% Sky Obscured)

14
16
23
30
42
27
9
6
3
0
0
0
1
1
0
1
40
68
92
74
78
67
74
80

High Clouds (% Sky Obscured)

5
4
2
0
0
0
0
0
0
0
0
0
0
0
0
1
33
70
100
100
100
100
78
54

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
9
9
9
9
8
9
6
8
6
6
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
33
38
19
34
42
47
49
48
25
28
30
27
30
33
28
40
43
42
43
36
25
20
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

6
5
4
4
4
3
3
3
3
5
7
8
8
7
6
6
6
6
8
10
12
12
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
93
94
93
91
91
91
91
85
79
76
74
77
81
85
87
87
90
88
84
84
85
84
82

Pressure (mb)

1009
1009
1009
1010
1010
1010
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1009
1009
1009
1008
1008
1007
1006
1005

Ozone (du)

305
305
304
305
310
317
321
320
319
317
318
317
316
312
307
303
306
313
316
315
311
311
312
313

Thursday 4

Full Moon 100%

14:59

07:31

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: 07:48, Set: 15:58, Transit: 11:53. Moon - Rise: 14:59, Set: 07:31. Civil Dark: 16:37 - 07:09. Nautical Dark: 17:19 - 06:27. Astro Dark: 17:59 - 05:48

Total Clouds (% Sky Obscured)

95
96
98
100
100
99
99
99
100
100
100
100
100
99
98
96
96
98
100
91
81
71
73
74

Low Clouds (% Sky Obscured)

50
80
89
100
91
82
72
64
57
49
66
83
100
92
84
76
37
38
40
47
49
50
53
52

Medium Clouds (% Sky Obscured)

81
89
89
88
97
93
91
95
98
100
100
100
100
98
95
76
78
84
96
85
76
65
44
25

High Clouds (% Sky Obscured)

30
31
31
11
35
40
47
57
51
51
70
84
100
69
34
2
4
4
5
3
2
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
7
4
3
3
2
2
2
3
7
8
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

11
53
79
95
95
95
95
95
95
95
95
95
95
85
70
72
52
55
55
45
36
24
21
19

Precipitation Amount (mm)

0
0
0.5
0.9
1
1.3
1.6
1.4
1.6
1.9
2.1
1.8
1.1
0.6
0.4
0.5
0.2
0.3
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
17
18
18
18
18
19
17
16
11
7
3
4
5
6
6
5
5
4
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
84
84
84
84
87
88
90
91
93
93
93
93
94
93
93
91
90
88
88
88
88
88

Pressure (mb)

1004
1004
1003
1002
1001
1001
1001
1001
1001
1001
1001
1001
1001
1002
1002
1002
1003
1003
1003
1004
1005
1005
1005
1006

Ozone (du)

314
315
314
314
313
313
316
322
322
324
327
328
327
330
333
339
342
344
346
348
349
351
352
353

Friday 5

Waning Gibbous 98%

15:52

08:57

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: 07:49, Set: 15:58, Transit: 11:53. Moon - Rise: 15:52, Set: 08:57. Civil Dark: 16:37 - 07:10. Nautical Dark: 17:19 - 06:28. Astro Dark: 17:58 - 05:49

Total Clouds (% Sky Obscured)

71
73
61
55
65
76
86
82
81
79
80
82
82
88
94
100
99
99
99
97
96
92
93
95

Low Clouds (% Sky Obscured)

52
46
46
43
51
63
76
73
66
59
66
72
76
71
62
51
47
45
42
46
54
60
63
63

Medium Clouds (% Sky Obscured)

7
5
2
0
2
3
3
3
4
6
15
21
25
40
47
65
68
81
97
87
77
67
73
80

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
33
67
100
82
64
45
31
20
8
16
27

ISS Passover

Visibility (miles)

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

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
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

11
18
17
12
27
33
38
34
28
9
20
24
28
29
27
20
25
33
42
68
85
95
87
75

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.5
0.6
0.5
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
89
88
88
88
88
87
84
81
78
81
84
85
84
84
84
85
87
88
90
91
91
91

Pressure (mb)

1006
1007
1007
1008
1008
1009
1009
1010
1010
1010
1010
1010
1010
1009
1009
1010
1010
1009
1009
1009
1008
1008
1007
1007

Ozone (du)

355
356
357
359
360
358
355
353
349
345
341
336
330
325
320
315
309
308
307
305
307
309
311
310

Saturday 6

Waning Gibbous 93%

17:04

10:05

Sun - Rise: 07:50, Set: 15:58, Transit: 11:54. Moon - Rise: 17:04, Set: 10:05. Civil Dark: 16:36 - 07:11. Nautical Dark: 17:18 - 06:30. Astro Dark: 17:58 - 05:50

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 Chichester, West Sussex, United Kingdom (50.84,-0.77)

Generated: 30/11/25 02:55:48. Forecast: 30/11/25 to 06/12/25. Timezone: UTC+0.00