Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 2%

09:57

16:49

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: 08:16, Set: 15:58, Transit: 12:07. Moon - Rise: 09:57, Set: 16:49. Civil Dark: 16:39 - 07:34. Nautical Dark: 17:23 - 06:50. Astro Dark: 18:05 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
99
98
97
97
93
95
97
100
99
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

81
84
81
79
91
77
71
75
85
88
85
89
89
58
59
71
70
79
76
89
95
97
87
75

Medium Clouds (% Sky Obscured)

88
58
71
98
52
60
45
89
85
90
85
80
87
88
97
100
100
100
100
100
100
91
100
100

High Clouds (% Sky Obscured)

45
23
68
92
69
87
73
70
86
85
74
76
84
99
86
93
100
100
83
100
98
100
100
88

ISS Passover

Visibility (miles)

-
-
-
-
-
-
9
9
9
9
9
9
9
9
9
9
9
9
5
9
9
9
4
5

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
3
0
15
12
13
4
5
9
6
18
47
75
68
57
84
95
95
72

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

12
10
10
10
8
7
7
6
5
6
7
9
9
9
9
10
11
11
10
10
12
12
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
92
93
93
94
92
96
96
96
96
98
93
91
90
88
90
93
93
93
93
93
93
95
96

Pressure (mb)

1005
1005
1005
1005
1006
1006
1006
1006
1007
1007
1008
1008
1008
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006

Ozone (du)

318
320
320
321
321
318
308
309
312
319
324
333
340
346
349
354
359
361
363
364
368
371
372
372

Monday 22

Waxing Crescent 6%

10:26

18:05

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: 08:16, Set: 15:59, Transit: 12:07. Moon - Rise: 10:26, Set: 18:05. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:24 - 06:51. Astro Dark: 18:05 - 06:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
97
97
93
100
93
100
100
100
99
93
76
100
75
74
99
100
100
100

Low Clouds (% Sky Obscured)

100
84
85
80
71
69
71
86
73
88
88
89
88
78
73
39
50
69
75
71
71
75
81
81

Medium Clouds (% Sky Obscured)

100
100
100
100
100
94
75
41
16
64
30
50
34
100
84
29
47
48
40
48
32
44
29
2

High Clouds (% Sky Obscured)

100
100
100
100
100
91
85
71
56
77
11
99
100
100
74
82
51
100
69
61
86
72
77
72

ISS Passover

Visibility (miles)

6
7
8
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

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

Precipitation Probability (%)

87
94
65
51
37
24
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.5
0.5
0.2
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)

12
11
12
13
12
11
11
9
8
7
7
8
6
6
5
6
5
5
6
4
4
4
4
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
95
93
91
91
93
93
96
96
91
87
82
81
82
87
91
91
93
91
91
91
93
91

Pressure (mb)

1006
1006
1006
1006
1005
1005
1006
1006
1007
1007
1008
1008
1008
1008
1009
1009
1009
1010
1011
1011
1012
1013
1013
1014

Ozone (du)

373
373
373
373
373
373
372
374
373
375
377
380
383
385
386
385
382
380
378
371
364
358
357
355

Tuesday 23

Waxing Crescent 12%

10:46

19:23

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: 08:16, Set: 15:59, Transit: 12:08. Moon - Rise: 10:46, Set: 19:23. Civil Dark: 16:40 - 07:35. Nautical Dark: 17:24 - 06:51. Astro Dark: 18:06 - 06:10

Total Clouds (% Sky Obscured)

97
97
99
100
100
99
96
99
95
94
99
100
99
98
100
100
100
100
100
99
99
99
98
95

Low Clouds (% Sky Obscured)

92
94
97
100
100
98
95
98
94
93
99
96
99
97
100
100
100
100
98
94
95
94
92
88

Medium Clouds (% Sky Obscured)

13
26
24
4
37
37
12
4
5
6
6
7
4
4
4
4
4
6
28
40
66
76
77
66

High Clouds (% Sky Obscured)

68
30
30
30
30
35
44
45
30
30
35
35
30
30
35
35
45
60
65
60
55
55
50
47

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
1
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)

4
5
6
6
6
7
7
6
7
6
7
8
10
10
10
10
11
12
12
11
11
10
10
10

Chance of Frost

Temperature (°C)

6
6
6
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
6
6
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

5
5
5
4
4
4
4
4
4
4
5
5
5
5
5
5
4
4
4
4
4
4
4
4

Relative Humidity (%)

91
93
93
93
93
93
94
94
94
94
94
91
91
91
90
88
88
87
85
83
83
83
82
84

Pressure (mb)

1014
1015
1015
1016
1016
1016
1017
1018
1019
1019
1020
1020
1020
1020
1021
1021
1022
1022
1023
1024
1024
1025
1025
1025

Ozone (du)

354
353
350
351
349
346
345
342
337
336
334
334
336
339
338
336
335
336
338
339
338
336
331
330

Wednesday 24

Waxing Crescent 19%

11:02

20:42

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: 08:17, Set: 16:00, Transit: 12:08. Moon - Rise: 11:02, Set: 20:42. Civil Dark: 16:41 - 07:36. Nautical Dark: 17:25 - 06:52. Astro Dark: 18:06 - 06:10

Total Clouds (% Sky Obscured)

97
98
99
99
99
99
94
90
76
73
56
60
77
83
84
86
84
88
83
78
74
73
73
72

Low Clouds (% Sky Obscured)

88
88
88
88
85
84
81
79
75
59
42
25
35
45
55
64
73
83
80
72
65
68
69
70

Medium Clouds (% Sky Obscured)

80
87
90
89
94
96
63
21
3
54
38
52
60
60
60
45
45
40
30
21
16
9
0
2

High Clouds (% Sky Obscured)

42
40
42
32
32
29
12
4
1
1
1
1
2
2
25
35
45
50
55
55
46
35
43
22

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
0
0
0
0
0
0
0
0
0
0
0
1
4
10
7
5
3
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
85
81
81
81
81
79
78
74
80
83
81
75
75
72
72
75
75
75
76
77
77
76
76

Pressure (mb)

1025
1026
1026
1027
1027
1028
1028
1029
1030
1031
1031
1032
1032
1032
1032
1032
1033
1033
1034
1034
1034
1035
1035
1035

Ozone (du)

329
326
323
325
321
320
319
319
319
319
320
320
321
322
321
321
321
322
321
322
324
324
324
327

Thursday 25

Waxing Crescent 28%

11:15

22:01

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

Sun - Rise: 08:17, Set: 16:01, Transit: 12:09. Moon - Rise: 11:15, Set: 22:01. Civil Dark: 16:42 - 07:36. Nautical Dark: 17:26 - 06:52. Astro Dark: 18:07 - 06:11

Total Clouds (% Sky Obscured)

70
66
62
57
60
55
46
39
31
37
42
47
39
31
30
30
33
35
21
22
22
25
28
28

Low Clouds (% Sky Obscured)

70
66
62
57
60
55
46
39
31
37
42
47
39
31
30
30
33
35
21
22
22
25
28
28

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
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)

11
11
11
11
10
10
10
11
11
11
12
13
15
15
15
15
14
14
13
13
13
12
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
76
76
76
77
77
77
77
76
77
79
77
73
75
75
79
83
86
88
86
86
86
86
89

Pressure (mb)

1035
1035
1035
1035
1035
1034
1034
1034
1034
1034
1034
1034
1033
1032
1032
1032
1032
1031
1031
1032
1032
1032
1032
1032

Ozone (du)

330
328
325
324
322
321
321
321
320
321
322
321
322
322
325
328
330
333
335
337
338
339
339
339

Friday 26

Waxing Crescent 39%

11:26

23:21

00 OK
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 OK
23 OK

Sun - Rise: 08:17, Set: 16:01, Transit: 12:09. Moon - Rise: 11:26, Set: 23:21. Civil Dark: 16:42 - 07:36. Nautical Dark: 17:26 - 06:52. Astro Dark: 18:08 - 06:11

Total Clouds (% Sky Obscured)

30
34
36
46
56
66
63
59
55
56
60
60
64
55
61
59
57
55
52
48
49
42
33
18

Low Clouds (% Sky Obscured)

30
32
36
44
53
61
59
57
55
56
54
53
60
55
61
59
57
55
52
48
49
42
33
18

Medium Clouds (% Sky Obscured)

0
0
0
1
1
1
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
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
1
0
0
0
0
0
0
0
0
1
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
93
91
93
93
94
92
94
94
93
86
79
72
76
79
82
85
88
93
91
93
91
89
88

Pressure (mb)

1031
1031
1031
1031
1031
1031
1030
1031
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1033
1034
1034
1035
1035
1035

Ozone (du)

338
339
340
341
342
343
344
343
343
343
343
344
344
343
341
340
340
340
340
338
336
334
334
334

Saturday 27

First Quarter 50%

11:36

No Set

Sun - Rise: 08:17, Set: 16:02, Transit: 12:10. Moon - Rise: 11:36, Set: No Set. Civil Dark: 16:43 - 07:36. Nautical Dark: 17:27 - 06:53. Astro Dark: 18:08 - 06:11

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 Northwick, Worcestershire, United Kingdom (52.21,-2.22)

Generated: 21/12/25 06:03:49. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+0.00