Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 23

Waxing Crescent 12%

10:33

19:19

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: 08:03, Set: 15:57, Transit: 12:00. Moon - Rise: 10:33, Set: 19:19. Civil Dark: 16:36 - 07:23. Nautical Dark: 17:19 - 06:40. Astro Dark: 18:00 - 06:00

Total Clouds (% Sky Obscured)

85
87
84
96
98
98
96
97
99
99
96
98
99
97
98
99
97
100
100
100
100
100
95
87

Low Clouds (% Sky Obscured)

43
44
30
50
79
83
84
82
84
84
89
94
97
95
94
98
97
100
100
100
100
100
95
87

Medium Clouds (% Sky Obscured)

25
23
84
73
40
39
45
21
13
29
34
17
10
12
28
13
3
3
5
0
0
0
0
0

High Clouds (% Sky Obscured)

85
84
59
64
90
91
76
90
98
48
14
37
8
6
5
7
5
7
1
0
6
4
4
4

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
1
2
10
7
2

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)

5
5
5
6
7
8
9
9
10
11
12
12
13
14
14
15
15
15
15
16
17
18
18
18

Chance of Frost

Temperature (°C)

7
7
6
6
6
6
6
6
6
6
6
7
7
7
7
7
6
6
6
6
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

6
6
5
5
5
5
5
5
5
5
4
5
4
4
4
4
4
4
4
4
3
3
2
2

Relative Humidity (%)

93
93
93
93
93
93
91
91
91
91
87
85
82
81
82
82
85
85
85
83
82
78
76
76

Pressure (mb)

1012
1012
1012
1013
1013
1013
1013
1014
1015
1015
1016
1016
1017
1017
1017
1018
1019
1019
1020
1021
1022
1023
1023
1024

Ozone (du)

369
365
361
356
353
353
354
353
354
353
355
352
351
354
357
362
361
361
363
362
359
356
355
353

Wednesday 24

Waxing Crescent 19%

10:50

20:37

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

Sun - Rise: 08:03, Set: 15:57, Transit: 12:00. Moon - Rise: 10:50, Set: 20:37. Civil Dark: 16:37 - 07:23. Nautical Dark: 17:20 - 06:41. Astro Dark: 18:00 - 06:00

Total Clouds (% Sky Obscured)

89
85
80
73
65
77
81
65
41
41
27
35
31
40
37
37
39
19
46
48
61
58
62
26

Low Clouds (% Sky Obscured)

89
85
73
72
63
77
81
65
41
41
27
35
31
40
37
37
39
19
46
48
61
58
62
26

Medium Clouds (% Sky Obscured)

0
0
3
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)

2
8
29
44
50
49
35
2
9
2
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 (%)

4
4
3
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
75
75
76
75
76
76
73
71
66
62
62
62
62
66
66
66
68
69
69
69
67
62
57

Pressure (mb)

1024
1025
1026
1026
1026
1027
1028
1028
1030
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1031
1030
1030

Ozone (du)

353
350
346
342
340
337
335
336
338
340
342
345
347
346
347
347
350
351
351
351
352
354
357
360

Thursday 25

Waxing Crescent 28%

11:04

21:54

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 OK
08 OK
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: 08:03, Set: 15:58, Transit: 12:01. Moon - Rise: 11:04, Set: 21:54. Civil Dark: 16:38 - 07:24. Nautical Dark: 17:20 - 06:41. Astro Dark: 18:01 - 06:01

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
21
30
47
73
74
73
74
71
72
66
68
62
61
53
52
51
50

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
21
30
47
73
74
73
74
71
72
66
68
62
61
53
52
51
50

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
0
0
1
3
4
3
0
0
3
4
4
30
13
6
3
0

High 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

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)

21
21
21
22
23
24
24
22
22
21
21
21
20
19
18
18
16
15
15
14
13
12
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-5
-5
-6
-6
-6
-6
-6
-6
-6
-5
-4
-3
-3
-2
-2
-2
-2
-2
-3
-3
-3
-3
-3
-3

Relative Humidity (%)

55
54
53
52
52
52
52
53
54
58
59
62
63
64
67
68
69
70
70
70
72
72
73
74

Pressure (mb)

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

Ozone (du)

362
360
360
359
357
356
358
359
360
360
361
360
358
357
358
361
362
361
362
364
367
366
361
357

Friday 26

Waxing Crescent 39%

11:17

23:12

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 OK

Sun - Rise: 08:03, Set: 15:59, Transit: 12:01. Moon - Rise: 11:17, Set: 23:12. Civil Dark: 16:38 - 07:24. Nautical Dark: 17:21 - 06:41. Astro Dark: 18:02 - 06:01

Total Clouds (% Sky Obscured)

56
60
61
62
63
59
60
59
57
53
54
49
53
57
58
60
61
64
62
64
62
53
47
39

Low Clouds (% Sky Obscured)

56
60
61
62
63
59
60
59
57
53
51
49
53
57
58
60
61
60
54
49
48
43
37
33

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
0
0
0
0
0
0
0
0
0
0
0
0
0
3
5
8

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)

9
8
7
6
6
6
7
8
9
9
11
14
15
16
16
16
16
15
15
14
13
12
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
78
81
84
86
88
89
89
88
88
82
77
73
71
67
63
60
61
62
62
66
71
73
76

Pressure (mb)

1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1028
1028
1029
1029
1029
1029
1029
1030
1030
1031
1031

Ozone (du)

354
351
349
349
345
345
343
340
340
338
337
337
337
338
337
336
334
332
333
333
332
332
329
326

Saturday 27

First Quarter 50%

11:29

No Set

00 OK
01 OK
02 OK
03 OK
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 OK
11 OK
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: 08:04, Set: 16:00, Transit: 12:02. Moon - Rise: 11:29, Set: No Set. Civil Dark: 16:39 - 07:24. Nautical Dark: 17:22 - 06:41. Astro Dark: 18:02 - 06:01

Total Clouds (% Sky Obscured)

38
34
30
21
13
4
2
1
0
9
20
30
54
77
100
91
83
88
81
74
69
74
81
87

Low Clouds (% Sky Obscured)

33
30
27
19
12
4
2
1
0
2
4
6
13
20
27
42
58
75
78
74
69
74
81
87

Medium Clouds (% Sky Obscured)

1
2
2
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

5
3
0
0
0
0
0
0
0
6
13
19
43
63
83
60
40
25
25
26
23
14
7
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
1
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)

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

Chance of Frost

Temperature (°C)

3
3
3
3
2
2
2
2
2
2
4
5
6
6
6
6
6
6
6
6
5
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
79
80
82
83
86
84
83
84
80
77
82
84
85
87
88
84
79
76
79
85
89
88
88

Pressure (mb)

1031
1031
1031
1032
1032
1032
1032
1032
1033
1034
1034
1034
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034

Ozone (du)

323
322
319
318
316
314
314
314
311
310
309
308
305
303
301
299
299
299
299
300
301
301
300
299

Sunday 28

Waxing Gibbous 61%

11:41

00:32

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: 08:04, Set: 16:01, Transit: 12:02. Moon - Rise: 11:41, Set: 00:32. Civil Dark: 16:40 - 07:24. Nautical Dark: 17:23 - 06:42. Astro Dark: 18:03 - 06:01

Total Clouds (% Sky Obscured)

91
92
92
92
92
92
89
88
86
80
74
69
69
66
62
67
75
84
90
90
91
88
86
83

Low Clouds (% Sky Obscured)

91
92
92
92
92
92
89
88
86
80
74
69
69
66
62
67
75
84
85
84
82
81
81
81

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
1
1
0
0
0
0
0
0
0
0
0
4
7
10
23
35
40
27
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 (%)

2
3
2
7
9
5
9
9
4
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
2
2
2
2
2
1
1
1
2
2
3
2
2
2
3
3
3
3
3
3
3
3

Relative Humidity (%)

86
83
79
76
75
75
75
74
72
72
74
74
74
72
74
74
78
82
86
88
91
91
91
89

Pressure (mb)

1033
1033
1033
1033
1033
1032
1032
1032
1033
1033
1033
1033
1033
1032
1032
1032
1033
1033
1033
1033
1033
1033
1033
1033

Ozone (du)

298
300
301
303
303
303
304
303
302
301
302
302
303
302
301
301
302
302
303
303
303
304
303
303

Monday 29

Waxing Gibbous 72%

11:57

01:56

Sun - Rise: 08:04, Set: 16:01, Transit: 12:03. Moon - Rise: 11:57, Set: 01:56. Civil Dark: 16:41 - 07:24. Nautical Dark: 17:23 - 06:42. Astro Dark: 18:04 - 06:01

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 Southgate, West Sussex, United Kingdom (51.11,-0.19)

Generated: 23/12/25 00:04:28. Forecast: 23/12/25 to 29/12/25. Timezone: UTC+0.00