Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 19

Waning Crescent 0%

08:58

16:03

20 OK
21 Bad
22 OK
23 Bad
00 OK
01 Bad
02 OK
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

Sun - Rise: 08:03, Set: 16:12, Transit: 12:08. Moon - Rise: 08:58, Set: 16:03. Civil Dark: 16:50 - 07:25. Nautical Dark: 17:31 - 06:44. Astro Dark: 18:10 - 06:05

Total Clouds (% Sky Obscured)

39
45
38
46
35
50
40
44
51
51
48
57
65
63
59
56
91
100
100
97
95
97
97
100

Low Clouds (% Sky Obscured)

11
27
38
46
35
50
40
44
51
51
48
57
65
63
59
56
45
44
64
91
93
67
57
52

Medium Clouds (% Sky Obscured)

0
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
32
31
88
94
89
92
84
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
25
100
100
32
20
12
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
6
9
6
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
Light Rain
None
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

0
0
0
15
9
4
1
8
9
11
4
2
7
2
1
0
0
2
15
69
56
58
61
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
13
12
12
14
15
16
16
17
18
19
19
20
21
22
22
22
23
24
26
29
29
28
24

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
9
8
8
8
7
7
6
6
5
5
5
4
3
3
3
3
2
3
2
2
3
4

Dew Point (°C)

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

Relative Humidity (%)

73
75
75
75
76
76
77
78
77
78
80
77
78
76
74
74
76
78
80
80
85
84
80
76

Pressure (mb)

1019
1019
1018
1018
1017
1016
1016
1015
1014
1013
1012
1012
1011
1010
1010
1009
1008
1006
1005
1004
1003
1003
1002
1002

Ozone (du)

294
293
292
296
302
305
302
300
295
291
289
289
289
286
289
290
289
288
289
291
296
305
311
314

Saturday 20

New Moon 2%

09:40

17:08

20 Bad
21 Bad
22 Bad
23 Bad
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

Sun - Rise: 08:03, Set: 16:13, Transit: 12:08. Moon - Rise: 09:40, Set: 17:08. Civil Dark: 16:51 - 07:26. Nautical Dark: 17:32 - 06:44. Astro Dark: 18:11 - 06:05

Total Clouds (% Sky Obscured)

96
76
87
100
99
98
100
85
100
100
100
100
100
100
94
82
87
97
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

60
61
53
42
40
44
51
63
70
75
60
53
64
57
59
46
28
63
59
76
59
71
74
66

Medium Clouds (% Sky Obscured)

93
59
77
74
98
96
100
61
100
100
100
100
100
100
91
47
29
26
44
38
88
100
100
100

High Clouds (% Sky Obscured)

9
20
23
40
20
69
100
39
100
43
45
18
25
100
26
25
75
93
100
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

37
15
3
15
5
5
32
46
45
57
79
86
68
63
60
55
49
40
44
40
41
43
40
35

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.5
0.6
0.2
0
0.2
0.3
0.3
0
0
0
0
0.2
0.2
0

Wind Speed/Direction (mph)

22
21
19
19
18
17
17
21
20
22
22
21
21
18
16
15
13
11
10
10
9
7
6
6

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
11
11
10
10
10
10
10
10
10
10
10
10
11
10
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
68
66
65
65
67
71
76
77
77
78
81
83
81
80
83
84
83
78
76
76
73
71
68

Pressure (mb)

1002
1002
1003
1003
1003
1003
1003
1003
1002
1002
1002
1002
1002
1003
1003
1003
1002
1002
1002
1002
1002
1002
1002
1002

Ozone (du)

316
324
326
324
319
321
321
320
323
335
352
377
390
400
406
407
409
412
415
413
412
411
413
415

Sunday 21

Waxing Crescent 6%

10:12

18:20

20 Bad
21 Bad
22 Bad
23 Bad
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

Sun - Rise: 08:04, Set: 16:13, Transit: 12:09. Moon - Rise: 10:12, Set: 18:20. Civil Dark: 16:51 - 07:26. Nautical Dark: 17:32 - 06:45. Astro Dark: 18:11 - 06:06

Total Clouds (% Sky Obscured)

100
98
100
100
100
100
85
97
100
100
100
100
100
100
100
100
100
100
97
77
76
73
98
99

Low Clouds (% Sky Obscured)

54
73
66
46
59
52
59
55
48
34
41
15
44
57
57
99
97
96
95
77
76
73
73
70

Medium Clouds (% Sky Obscured)

99
96
100
100
100
98
85
69
73
100
99
100
43
41
36
100
91
40
40
38
45
43
49
56

High Clouds (% Sky Obscured)

100
40
100
66
100
100
24
49
59
33
32
30
32
36
100
55
20
37
60
59
59
54
71
58

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
5
4
3
5
9
9
9
9
9
9
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
Very Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

37
31
33
54
69
72
56
64
87
84
75
50
12
21
20
67
50
63
73
73
70
67
64
60

Precipitation Amount (mm)

0
0
0
0
0.3
0.3
0
0
0.7
0.6
0.6
0.2
0
0
0
0.4
0
0.3
0.4
0.4
0.4
0.3
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
10
10
10
10
10
10
11
11
11
11
11
11
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
65
64
63
63
64
66
64
69
80
80
77
76
71
69
65
65
69
68
64
60
61
64
66

Pressure (mb)

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

Ozone (du)

419
420
420
421
418
419
422
428
431
437
439
438
433
426
418
413
409
405
405
403
393
387
382
371

Monday 22

Waxing Crescent 12%

10:36

19:35

20 Bad
21 Bad
22 Bad
23 Bad
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

Sun - Rise: 08:04, Set: 16:14, Transit: 12:09. Moon - Rise: 10:36, Set: 19:35. Civil Dark: 16:52 - 07:26. Nautical Dark: 17:33 - 06:45. Astro Dark: 18:12 - 06:06

Total Clouds (% Sky Obscured)

99
97
96
94
91
88
84
78
63
73
73
99
99
95
90
87
91
95
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
61
51
45
47
47
49
61
63
73
73
90
95
85
77
70
75
80
85
89
94
100
100
100

Medium Clouds (% Sky Obscured)

58
52
46
41
35
25
18
29
38
47
40
40
74
66
61
59
75
89
100
99
97
96
85
67

High Clouds (% Sky Obscured)

50
59
64
72
55
44
36
25
2
2
6
35
30
35
30
30
44
72
85
94
83
59
37
43

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
3
3
3
3
6
5
6
5
5

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

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

Precipitation Probability (%)

53
43
32
13
16
13
1
11
13
7
16
19
26
53
71
74
75
66
53
46
45
46
50
35

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
13
14
14
15
17
18
19
21
22
23
23
23
21
20
18
15
13
12
11
10
10
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
59
61
66
71
73
76
77
78
78
77
77
76
73
80
87
87
85
84
84
84
85
85
85

Pressure (mb)

1007
1007
1007
1007
1006
1006
1006
1007
1006
1006
1006
1007
1007
1008
1008
1008
1008
1009
1009
1009
1010
1011
1011
1012

Ozone (du)

359
346
336
329
327
326
326
327
328
329
334
340
344
347
350
352
354
354
357
359
359
359
361
360

Tuesday 23

Waxing Crescent 19%

10:55

No Set

20 Bad
21 Bad
22 Bad
23 Bad
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

Sun - Rise: 08:04, Set: 16:15, Transit: 12:10. Moon - Rise: 10:55, Set: No Set. Civil Dark: 16:52 - 07:27. Nautical Dark: 17:33 - 06:46. Astro Dark: 18:12 - 06:07

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
88
70
67
69
77
91
99
96
92
90
90
90
91
89
88
87
87
89

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
88
70
67
69
77
90
98
93
86
79
77
75
73
67
61
55
60
67

Medium Clouds (% Sky Obscured)

53
47
46
45
45
45
21
2
2
2
13
26
34
35
36
37
31
29
24
21
19
14
12
7

High Clouds (% Sky Obscured)

9
4
6
22
25
1
1
2
1
0
3
6
4
3
5
4
3
2
1
2
2
3
2
2

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

Precipitation Probability (%)

27
24
23
20
25
25
24
23
23
25
28
29
30
32
33
31
44
53
54
54
56
55
60
63

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

12
13
13
13
14
16
17
19
20
21
21
21
23
24
25
25
25
25
26
26
26
27
27
26

Chance of Frost

Temperature (°C)

9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
10
9
9
9
10
10
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
80
76
70
69
69
70
73
73
73
73
76
77
78
78
76
74
73
70
69
72
73
76
76

Pressure (mb)

1013
1013
1013
1013
1014
1014
1015
1015
1015
1016
1016
1016
1017
1018
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020

Ozone (du)

359
357
355
354
352
352
353
355
359
362
362
360
358
356
357
359
360
361
362
363
363
364
364
367

Wednesday 24

Waxing Crescent 28%

11:11

20:51

20 Bad
21 Bad
22 Bad
23 Bad
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

Sun - Rise: 08:05, Set: 16:15, Transit: 12:10. Moon - Rise: 11:11, Set: 20:51. Civil Dark: 16:53 - 07:27. Nautical Dark: 17:34 - 06:46. Astro Dark: 18:13 - 06:07

Total Clouds (% Sky Obscured)

91
86
83
80
78
81
81
87
77
75
74
77
71
71
71
67
66
65
65
65
60
59
60
64

Low Clouds (% Sky Obscured)

75
73
73
74
74
75
75
71
67
63
70
76
71
71
69
63
58
65
65
65
60
59
60
64

Medium Clouds (% Sky Obscured)

5
5
5
13
17
25
38
45
41
37
42
35
33
34
30
30
35
39
29
23
23
36
36
41

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
9
17
21
17
9
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

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

Precipitation Probability (%)

65
64
61
59
57
51
39
38
35
29
28
23
17
22
22
14
24
27
28
28
27
25
27
27

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

26
26
25
25
24
23
24
24
24
25
25
24
24
24
23
23
23
22
23
23
25
23
24
22

Chance of Frost

Temperature (°C)

9
9
9
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8

Feels Like (°C)

1
1
0
0
0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

76
75
72
69
65
65
64
64
63
64
63
62
61
60
58
57
56
56
55
55
55
55
55
55

Pressure (mb)

1020
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

370
372
370
368
366
362
359
356
354
353
351
350
349
349
348
348
347
347
347
347
345
343
341
341

Thursday 25

Waxing Crescent 39%

11:25

22:07

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 OK
08 OK
09 OK
10 OK
11 Bad

Sun - Rise: 08:05, Set: 16:16, Transit: 12:11. Moon - Rise: 11:25, Set: 22:07. Civil Dark: 16:54 - 07:27. Nautical Dark: 17:35 - 06:46. Astro Dark: 18:14 - 06:07

Total Clouds (% Sky Obscured)

69
74
75
75
75
74
59
49
45
40
35
30
30
30
30
30

Low Clouds (% Sky Obscured)

68
69
70
71
68
70
59
49
45
40
35
30
30
30
30
30

Medium Clouds (% Sky Obscured)

46
47
54
50
49
49
43
40
32
21
24
30
30
30
30
30

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

27
24
19
13
14
12
5
16
18
8
14
15
12
16
17
13

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

22
22
20
20
19
20
20
20
19
19
19
19
20
20
20
20

Chance of Frost

Temperature (°C)

8
8
7
7
7
7
7
7
7
7
6
7
7
7
7
7

Feels Like (°C)

-1
-1
-2
-1
-2
-2
-2
-1
-2
-2
-2
-2
-1
-1
-1
-1

Dew Point (°C)

-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2

Relative Humidity (%)

53
53
53
54
54
54
54
54
54
54
55
54
54
54
52
52

Pressure (mb)

1020
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

340
340
338
336
334
332
330
329
330
330
331
332
333
334
334
334

Forecast for Salerie, Guernsey (49.46,-2.53)

Generated: 19/12/25 20:15:38. Forecast: 19/12/25 to 25/12/25. Timezone: UTC+0.00