Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 30

Waxing Gibbous 82%

12:17

No Set

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

Sun - Rise: 08:04, Set: 16:02, Transit: 12:03. Moon - Rise: 12:17, Set: No Set. Civil Dark: 16:42 - 07:24. Nautical Dark: 17:24 - 06:42. Astro Dark: 18:05 - 06:02

Total Clouds (% Sky Obscured)

78
77
76
71
45
2
50
48
58
10
17
13
3
2
4
3
0
0
8
0
8
28
49
48

Low Clouds (% Sky Obscured)

68
70
57
40
44
0
50
48
58
10
17
13
0
0
0
0
0
0
8
0
8
28
49
48

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)

35
38
40
59
45
2
9
6
3
3
3
4
3
2
4
3
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 (%)

1
0
1
1
1
1
1
1
0
1
1
1
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
10
10
10
11
11
11
12
11
12
11
11
9
8
7
7
7
7
6
6
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
67
64
60
62
64
64
62
61
60
62
68
73
77
80
81
83
84
86
88
91
91
92
91

Pressure (mb)

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

Ozone (du)

275
277
278
282
284
282
283
286
288
303
306
309
309
309
308
305
303
300
301
302
302
302
303
307

Wednesday 31

Waxing Gibbous 91%

12:46

04:56

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

Sun - Rise: 08:04, Set: 16:03, Transit: 12:04. Moon - Rise: 12:46, Set: 04:56. Civil Dark: 16:43 - 07:25. Nautical Dark: 17:25 - 06:42. Astro Dark: 18:05 - 06:02

Total Clouds (% Sky Obscured)

19
9
33
0
0
5
0
0
0
7
1
0
0
0
0
1
1
1
1
9
35
97
68
100

Low Clouds (% Sky Obscured)

19
9
33
0
0
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
40
58

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
4
1
0
0
0
0
1
1
1
1
8
23
63
44
76

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
91
91
91
91
89
83
77
73
72
75
80
86
88
89
89
87
89
91
89
89
91
91
91

Pressure (mb)

1032
1032
1032
1032
1032
1032
1031
1031
1030
1029
1028
1028
1028
1027
1027
1026
1026
1025
1024
1023
1022
1021
1020
1019

Ozone (du)

307
309
310
311
312
313
314
310
309
308
309
310
310
307
305
303
303
307
310
312
313
312
313
311

Thursday 1

Waxing Gibbous 97%

13:28

06:26

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

Sun - Rise: 08:04, Set: 16:04, Transit: 12:04. Moon - Rise: 13:28, Set: 06:26. Civil Dark: 16:44 - 07:24. Nautical Dark: 17:26 - 06:42. Astro Dark: 18:06 - 06:02

Total Clouds (% Sky Obscured)

100
100
96
66
60
82
73
91
95
36
46
100
30
4
14
26
6
2
2
10
15
20
28
26

Low Clouds (% Sky Obscured)

68
14
0
7
7
49
68
77
40
30
38
30
0
0
14
26
5
0
0
8
14
20
27
26

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
15
27
22
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

High Clouds (% Sky Obscured)

95
98
96
66
60
43
14
22
74
2
15
100
30
4
3
2
1
2
2
5
3
2
7
1

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
2
1
1
6
8
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
91
91
91
80
65
69
76
72
71
75
82
89
93
93
93
93
91
91
91
91
92
92
91

Pressure (mb)

1018
1017
1016
1015
1015
1014
1013
1012
1012
1011
1010
1010
1010
1010
1010
1011
1011
1010
1010
1010
1010
1010
1010
1010

Ozone (du)

310
308
305
306
305
309
314
318
317
317
321
335
352
361
363
366
367
368
369
366
359
353
351
348

Friday 2

Waxing Gibbous 100%

14:30

07:43

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

Sun - Rise: 08:04, Set: 16:05, Transit: 12:05. Moon - Rise: 14:30, Set: 07:43. Civil Dark: 16:45 - 07:24. Nautical Dark: 17:27 - 06:42. Astro Dark: 18:07 - 06:02

Total Clouds (% Sky Obscured)

25
28
18
12
6
12
19
25
37
46
55
56
66
80
58
37
2
3
1
1
1
1
1
2

Low Clouds (% Sky Obscured)

25
24
18
12
6
4
2
0
0
0
1
10
19
39
29
20
0
0
1
1
1
1
1
2

Medium Clouds (% Sky Obscured)

3
28
18
12
2
8
15
21
30
34
32
27
29
67
58
10
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
1
1
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
3
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
1
0
4
8
7
13
4
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
89
89
87
81
74
72
73
75
79
85
85
89
94
83
89
89
87
86
89
86
79

Pressure (mb)

1009
1009
1009
1009
1009
1008
1008
1008
1007
1006
1005
1005
1005
1004
1004
1004
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

343
338
336
331
322
316
308
310
310
306
302
298
298
297
295
298
309
316
323
334
336
339
345
355

Saturday 3

Full Moon 99%

15:50

08:40

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

Sun - Rise: 08:03, Set: 16:07, Transit: 12:05. Moon - Rise: 15:50, Set: 08:40. Civil Dark: 16:46 - 07:24. Nautical Dark: 17:28 - 06:42. Astro Dark: 18:08 - 06:02

Total Clouds (% Sky Obscured)

1
1
12
24
36
31
27
23
20
26
20
15
0
0
44
44
44
45
57
68
77
86
95
83

Low Clouds (% Sky Obscured)

1
1
12
24
36
29
22
15
10
5
0
0
0
0
21
31
39
42
44
47
38
24
16
18

Medium Clouds (% Sky Obscured)

0
1
0
0
2
31
27
23
20
26
20
15
0
0
21
39
38
31
19
9
14
25
35
40

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
1
1
1
4
13
4
0
0
0
0
0
0
0
0
6
9
11
20
20
15
17

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-6
-5
-5
-4
-4
-5
-6
-6
-6
-6
-6
-6
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-5
-5

Relative Humidity (%)

78
79
84
86
86
81
68
63
61
58
61
62
69
71
75
76
76
76
75
74
74
76
79
81

Pressure (mb)

1005
1005
1005
1005
1006
1006
1007
1007
1007
1007
1007
1007
1008
1008
1009
1004
1005
1005
1005
1006
1006
1006
1007
1007

Ozone (du)

367
380
394
400
400
405
405
405
407
410
410
412
415
422
422
423
423
424
419
414
409
400
392
384

Sunday 4

Waning Gibbous 96%

17:20

09:18

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

Sun - Rise: 08:03, Set: 16:08, Transit: 12:05. Moon - Rise: 17:20, Set: 09:18. Civil Dark: 16:47 - 07:24. Nautical Dark: 17:29 - 06:42. Astro Dark: 18:09 - 06:02

Total Clouds (% Sky Obscured)

72
57
37
22
7
5
3
0
33
66
100
66
33
0
0
0
0
10
21
30
28
27
26
27

Low Clouds (% Sky Obscured)

21
24
16
11
4
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

35
22
11
4
0
0
0
0
3
10
20
13
10
0
0
0
0
9
14
18
26
27
26
27

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
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 (%)

15
4
5
4
1
1
0
0
0
0
0
1
1
1
1
1
0
1
0
0
2
3
3
38

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
72
68
68
68
68
61
53
48
48
47
49
53
58
64
67
71
73
76
78
79
81
84
87

Pressure (mb)

1008
1008
1009
1010
1010
1011
1011
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

383
383
382
382
381
381
381
382
382
381
379
377
374
370
366
369
371
374
378
383
387
386
386
385

Monday 5

Waning Gibbous 91%

18:49

09:44

Sun - Rise: 08:03, Set: 16:09, Transit: 12:06. Moon - Rise: 18:49, Set: 09:44. Civil Dark: 16:48 - 07:24. Nautical Dark: 17:30 - 06:42. Astro Dark: 18:10 - 06:02

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: 30/12/25 04:35:33. Forecast: 30/12/25 to 05/01/26. Timezone: UTC+0.00