Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Crescent 25%

12:08

20:16

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

Sun - Rise: 07:35, Set: 16:04, Transit: 11:50. Moon - Rise: 12:08, Set: 20:16. Civil Dark: 16:42 - 06:58. Nautical Dark: 17:23 - 06:17. Astro Dark: 18:02 - 05:37

Total Clouds (% Sky Obscured)

59
67
58
37
14
17
38
62
57
57
49
35
44
41
41
56
48
8
20
24
0
20
35
37

Low Clouds (% Sky Obscured)

59
46
44
0
14
17
38
43
39
45
42
35
44
41
41
56
48
8
20
24
0
20
35
37

Medium Clouds (% Sky Obscured)

3
13
15
13
0
0
0
31
24
17
7
2
3
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
2
0
0
0
0
0
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 (%)

0
0
1
0
0
0
0
4
0
0
0
0
0
0
0
1
4
3
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
71
71
68
73
75
77
82
82
82
80
78
75
74
73
71
69
74
83
86
88
89
89
91

Pressure (mb)

1005
1005
1007
1007
1008
1009
1010
1011
1012
1013
1014
1015
1015
1015
1016
1016
1017
1018
1018
1019
1020
1020
1021
1021

Ozone (du)

290
292
294
293
293
297
299
304
304
302
300
301
300
301
302
301
301
301
298
298
297
300
299
294

Wednesday 26

Waxing Crescent 34%

12:29

21:33

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

Sun - Rise: 07:37, Set: 16:03, Transit: 11:50. Moon - Rise: 12:29, Set: 21:33. Civil Dark: 16:41 - 06:59. Nautical Dark: 17:22 - 06:18. Astro Dark: 18:02 - 05:39

Total Clouds (% Sky Obscured)

36
45
37
0
0
12
94
95
89
97
100
100
100
100
100
100
100
96
86
93
92
100
100
100

Low Clouds (% Sky Obscured)

36
45
37
0
0
0
0
0
0
0
0
0
0
0
35
54
70
65
65
70
86
100
100
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
49
98
100
100
100
100
100
99
94
86
87
89
93
86
61

High Clouds (% Sky Obscured)

0
0
0
0
0
12
56
95
89
95
100
100
100
100
100
90
25
25
27
20
6
1
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
6
8

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
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
19
30
39
39
60
64
58

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
6
6
5
4
4
4
3
2
2
2
3
4
6
5
4
4
5
6
7
10
11
12

Chance of Frost

Temperature (°C)

3
3
3
3
2
1
0
0
-0
0
2
4
5
6
6
6
5
6
7
7
8
8
9
9

Feels Like (°C)

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

Dew Point (°C)

2
2
2
2
1
-1
-1
-1
-2
-2
-2
-1
0
1
1
3
3
3
3
4
5
6
7
8

Relative Humidity (%)

91
91
91
93
93
91
91
91
89
83
76
73
70
68
72
79
82
79
79
77
81
87
91
93

Pressure (mb)

1021
1021
1022
1022
1022
1022
1023
1023
1023
1023
1024
1023
1023
1022
1022
1021
1021
1020
1020
1020
1020
1020
1019
1019

Ozone (du)

291
287
286
287
288
286
284
286
287
287
285
283
282
280
281
281
280
279
279
275
274
273
273
272

Thursday 27

Waxing Crescent 44%

12:46

22:51

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:38, Set: 16:03, Transit: 11:50. Moon - Rise: 12:46, Set: 22:51. Civil Dark: 16:40 - 07:01. Nautical Dark: 17:22 - 06:19. Astro Dark: 18:01 - 05:40

Total Clouds (% Sky Obscured)

100
100
100
100
95
98
94
100
99
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100

Low Clouds (% Sky Obscured)

100
100
100
88
76
95
86
84
72
84
100
99
93
100
100
100
91
100
97
95
93
94
95
96

Medium Clouds (% Sky Obscured)

34
29
29
22
21
14
21
6
23
37
40
33
22
76
94
99
99
94
98
98
99
99
23
33

High Clouds (% Sky Obscured)

55
100
100
100
55
29
29
100
85
67
14
99
82
83
99
100
100
100
80
60
41
54
77
95

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

66
49
43
29
25
34
26
21
3
10
22
25
42
44
41
50
30
42
54
86
89
87
57
26

Precipitation Amount (mm)

0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.4
0.5
0
0

Wind Speed/Direction (mph)

13
13
14
13
12
10
9
9
10
10
9
10
10
11
11
12
12
13
13
13
13
12
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
91
93
93
96
98
98
98
98
98
98
98
98
98
98
98
96
98
98
96
98
96
95

Pressure (mb)

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

Ozone (du)

271
270
270
269
268
265
265
265
265
264
264
264
262
261
260
260
262
263
263
261
259
258
258
259

Friday 28

First Quarter 55%

13:00

No Set

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

Sun - Rise: 07:40, Set: 16:02, Transit: 11:51. Moon - Rise: 13:00, Set: No Set. Civil Dark: 16:40 - 07:02. Nautical Dark: 17:21 - 06:21. Astro Dark: 18:01 - 05:41

Total Clouds (% Sky Obscured)

100
100
100
88
78
72
79
84
88
83
79
21
23
21
22
30
33
58
38
33
26
42
61
100

Low Clouds (% Sky Obscured)

77
56
34
25
15
5
4
2
0
8
14
21
23
21
22
28
23
16
16
15
13
26
40
55

Medium Clouds (% Sky Obscured)

56
63
75
55
36
18
11
6
56
56
1
0
0
0
0
0
0
0
0
0
0
20
43
65

High Clouds (% Sky Obscured)

97
98
100
72
47
21
38
54
72
54
31
1
1
0
0
16
32
51
32
25
16
37
58
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 (%)

14
9
2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
2
1
11
11
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)

9
7
6
6
5
5
5
5
5
5
7
9
11
11
12
12
11
10
9
9
9
9
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
90
93
95
95
95
96
94
94
91
88
81
78
75
77
78
85
90
93
95
93
91
91
90

Pressure (mb)

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

Ozone (du)

261
264
268
269
268
268
269
268
268
272
273
274
276
278
277
279
280
281
281
282
283
284
286
288

Saturday 29

Waxing Gibbous 66%

13:12

00:10

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
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:41, Set: 16:01, Transit: 11:51. Moon - Rise: 13:12, Set: 00:10. Civil Dark: 16:39 - 07:03. Nautical Dark: 17:21 - 06:22. Astro Dark: 18:00 - 05:42

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
98
97
98
99
100
100
100
99
100
100
100
100
100
100
85
69
51

Low Clouds (% Sky Obscured)

60
65
67
78
89
100
86
71
57
71
86
100
91
82
73
75
77
79
60
41
26
35
40
46

Medium Clouds (% Sky Obscured)

67
84
75
66
89
97
97
96
68
57
70
99
89
77
77
87
94
100
100
100
100
85
69
51

High Clouds (% Sky Obscured)

100
100
100
100
100
100
76
48
13
44
73
100
98
96
94
96
98
100
100
100
100
77
49
23

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

13
20
21
34
42
43
41
42
49
63
76
95
95
95
95
95
90
52
42
33
20
14
10
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.3
0.7
1
1.2
1.1
1.1
0.5
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
12
13
14
14
14
14
14
15
16
17
17
19
14
9
8
8
11
14
13
12
11
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
87
85
84
85
84
84
83
87
87
85
85
90
90
90
91
90
90
90
90
90
91
89
89

Pressure (mb)

1013
1012
1011
1011
1010
1009
1008
1008
1007
1006
1006
1005
1004
1004
1003
1003
1003
1004
1004
1005
1006
1006
1007
1007

Ozone (du)

289
289
290
292
294
295
298
301
303
305
306
306
307
309
312
314
317
321
325
327
330
332
335
337

Sunday 30

Waxing Gibbous 77%

13:25

01:30

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 OK
20 OK
21 OK
22 OK
23 Good

Sun - Rise: 07:43, Set: 16:00, Transit: 11:52. Moon - Rise: 13:25, Set: 01:30. Civil Dark: 16:39 - 07:04. Nautical Dark: 17:20 - 06:23. Astro Dark: 18:00 - 05:43

Total Clouds (% Sky Obscured)

62
76
91
94
97
95
90
86
58
44
39
44
46
44
46
40
38
36
37
28
17
13
8
6

Low Clouds (% Sky Obscured)

43
40
38
41
41
42
38
35
34
38
39
44
46
44
46
40
38
36
32
23
14
9
4
1

Medium Clouds (% Sky Obscured)

42
36
32
35
37
15
5
5
5
5
5
5
5
8
42
31
24
10
7
3
0
0
0
0

High Clouds (% Sky Obscured)

13
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
6
9
8
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 (%)

22
19
11
33
32
27
32
29
19
28
26
13
40
38
26
23
14
10
9
4
0
4
3
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
10
10
10
11
11
11
12
11
12
13
14
16
15
15
15
14
13
12
11
9
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

3
2
3
2
3
3
3
3
3
2
3
2
2
7
7
7
7
7
8
4
4
4
4
4

Dew Point (°C)

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

Relative Humidity (%)

88
88
86
86
88
88
88
89
89
89
82
75
69
74
78
85
87
88
90
90
89
89
89
88

Pressure (mb)

1007
1008
1008
1009
1009
1009
1009
1010
1011
1011
1011
1012
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1016
1016

Ozone (du)

340
342
343
345
343
341
339
337
336
335
339
343
347
342
338
334
329
324
319
315
312
308
305
302

Monday 1

Waxing Gibbous 86%

13:40

02:54

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)

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: 25/11/25 00:01:09. Forecast: 25/11/25 to 01/12/25. Timezone: UTC+0.00