Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 3%

07:04

14:05

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
03 Bad

Sun - Rise: 08:02, Set: 15:54, Transit: 11:58. Moon - Rise: 07:04, Set: 14:05. Civil Dark: 16:34 - 07:22. Nautical Dark: 17:17 - 06:39. Astro Dark: 17:57 - 05:58

Total Clouds (% Sky Obscured)

70
77
82
86
99
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

70
77
68
70
79
83
99
91
91
90
89
92
100
65
46
47
88
60
56
59
64
12
0
0

Medium Clouds (% Sky Obscured)

70
77
74
86
99
98
100
100
100
100
100
100
100
100
98
86
99
98
100
100
100
100
100
98

High Clouds (% Sky Obscured)

70
77
82
86
80
58
100
99
100
100
100
100
100
100
100
100
100
100
93
67
77
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
3
2
3
3
2
3
3
4
9
9
9
7
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

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

Precipitation Probability (%)

95
42
46
22
36
85
95
95
95
95
95
95
95
52
10
24
59
47
40
14
15
0
0
0

Precipitation Amount (mm)

1.6
0
0.3
0
0
0
2.3
4
2.8
2
1.9
1.6
0.6
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
13
11
11
13
13
15
15
18
22
25
25
23
23
20
17
13
12
15
14
11
12
11
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
93
96
96
93
95
96
95
95
93
90
88
87
88
89
84
90
95
93
83
85
88
81
82

Pressure (mb)

1008
1008
1008
1008
1008
1007
1006
1005
1003
1002
1001
1001
1001
1001
1002
1003
1004
1005
1005
1006
1007
1009
1010
1011

Ozone (du)

304
299
297
297
292
287
283
281
283
287
286
285
288
290
292
299
311
325
332
336
335
337
339
337

Friday 19

Waning Crescent 1%

08:09

14:46

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

Sun - Rise: 08:03, Set: 15:54, Transit: 11:58. Moon - Rise: 08:09, Set: 14:46. Civil Dark: 16:34 - 07:23. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 05:59

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
27
32
31
26
34
5
0
0
39
37
37
54
59
70
71
74

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
27
32
31
26
34
5
0
0
39
37
37
54
59
70
71
74

Medium Clouds (% Sky Obscured)

90
100
100
100
100
61
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
89
60
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
1
1
0
1
0
2
1
3
3
6
7
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
82
81
79
81
81
79
78
77
77
77
80
88
91
91
91
93
91
93
93
93
93
93
91

Pressure (mb)

1012
1012
1013
1014
1015
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1018
1019
1019
1018
1018
1017
1017
1016
1016

Ozone (du)

338
347
356
358
361
364
371
372
364
361
353
318
308
308
298
291
286
285
286
287
289
294
297
295

Saturday 20

New Moon 0%

09:02

15:41

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
03 Bad

Sun - Rise: 08:03, Set: 15:55, Transit: 11:59. Moon - Rise: 09:02, Set: 15:41. Civil Dark: 16:35 - 07:23. Nautical Dark: 17:18 - 06:40. Astro Dark: 17:58 - 06:00

Total Clouds (% Sky Obscured)

79
82
75
57
59
62
74
78
71
71
81
71
76
92
81
60
65
80
79
80
85
91
97
95

Low Clouds (% Sky Obscured)

79
82
75
57
59
62
49
61
52
40
51
62
60
73
70
53
58
75
73
58
62
69
77
78

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
16
18
11
13
17
7
11
29
81
60
65
75
70
74
66
87
88
64

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
2
2
9
27
25
25
25
15
15
21
18
23
26
36

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
2
2
1
0
0
0
1
1
6
2
0
0
0
0
0
0
0
0
0
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
3
4
4
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4

Relative Humidity (%)

94
94
94
93
93
91
85
79
78
78
78
79
84
88
86
88
90
91
93
94
93
93
94
94

Pressure (mb)

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

Ozone (du)

291
289
286
286
289
297
300
300
302
303
304
306
310
309
306
307
309
305
303
305
304
305
308
308

Sunday 21

Waxing Crescent 2%

09:43

16:47

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
03 Bad

Sun - Rise: 08:04, Set: 15:55, Transit: 11:59. Moon - Rise: 09:43, Set: 16:47. Civil Dark: 16:35 - 07:24. Nautical Dark: 17:18 - 06:41. Astro Dark: 17:59 - 06:00

Total Clouds (% Sky Obscured)

93
91
94
97
100
100
100
99
100
100
100
98
94
93
95
97
100
100
100
100
100
100
97
100

Low Clouds (% Sky Obscured)

81
81
82
83
83
82
80
78
87
93
99
89
87
80
85
89
94
82
100
100
100
72
66
90

Medium Clouds (% Sky Obscured)

31
19
29
57
74
81
88
96
85
82
80
70
11
58
58
57
60
51
35
42
37
30
25
66

High Clouds (% Sky Obscured)

45
55
71
86
100
95
91
87
77
65
57
45
19
21
42
67
93
81
67
57
47
50
39
34

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
6
8
11
33
32
35
32
31
35
23
17
6
2
4
9
4
2
1
1
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
93
88
94
93
93
94
96
95
93
93
95
95
96
95
95
95
95
95
85
84
81
88
91

Pressure (mb)

1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1010
1010
1010

Ozone (du)

318
329
334
344
353
359
360
360
361
364
368
373
381
387
393
394
395
393
391
392
391
391
391
392

Monday 22

Waxing Crescent 6%

10:13

18:02

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
03 Bad

Sun - Rise: 08:04, Set: 15:56, Transit: 12:00. Moon - Rise: 10:13, Set: 18:02. Civil Dark: 16:36 - 07:24. Nautical Dark: 17:19 - 06:41. Astro Dark: 17:59 - 06:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
98
97
97
97
98
97
96
96
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

70
77
99
100
100
95
90
85
85
85
84
84
84
83
79
84
89
91
93
90
91
81
77
83

Medium Clouds (% Sky Obscured)

74
81
79
80
80
79
76
46
34
24
17
27
36
50
32
26
48
46
37
24
24
24
30
54

High Clouds (% Sky Obscured)

40
36
33
25
21
23
19
26
42
58
75
60
40
25
95
93
90
94
98
100
99
99
98
99

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
7
0
2
8
26
27
20
6
8
4
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
91
90
90
88
87
82
78
75
81
84
84
84
85
87
88
90
90
90
91
91
93
93

Pressure (mb)

1010
1010
1011
1011
1011
1012
1012
1012
1012
1011
1011
1012
1012
1012
1013
1012
1013
1013
1013
1014
1014
1014
1014
1014

Ozone (du)

394
396
398
400
401
404
408
412
413
414
414
415
415
416
413
411
410
408
405
402
399
398
397
397

Tuesday 23

Waxing Crescent 12%

10:35

19:19

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
03 Bad

Sun - Rise: 08:05, Set: 15:56, Transit: 12:00. Moon - Rise: 10:35, Set: 19:19. Civil Dark: 16:36 - 07:25. Nautical Dark: 17:19 - 06:42. Astro Dark: 18:00 - 06:01

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
94
88
82
83
84
83
82
82
79
75
68
59
61
60
57
60

Low Clouds (% Sky Obscured)

79
71
73
80
85
88
93
98
94
88
82
83
84
83
79
75
71
62
54
45
44
43
42
50

Medium Clouds (% Sky Obscured)

63
70
50
35
20
21
26
31
29
23
12
6
4
4
11
23
33
54
68
59
61
60
57
60

High Clouds (% Sky Obscured)

99
100
92
82
73
78
86
97
66
33
0
0
0
10
15
35
65
65
65
59
55
55
57
44

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
94
94
93
93
88
85
81
82
84
83
86
87
88
90
88
90
90
90
90
90
89
88

Pressure (mb)

1014
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

395
394
393
394
395
396
394
393
391
389
387
385
383
380
378
376
375
373
372
372
371
370
369
368

Wednesday 24

Waxing Crescent 19%

10:52

20:37

Sun - Rise: 08:05, Set: 15:57, Transit: 12:01. Moon - Rise: 10:52, Set: 20:37. Civil Dark: 16:37 - 07:25. Nautical Dark: 17:20 - 06:42. Astro Dark: 18:01 - 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 Esher, Surrey, United Kingdom (51.36,-0.38)

Generated: 18/12/25 04:56:13. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+0.00