Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 12%

04:40

13:13

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 Good
21 Good
22 OK
23 OK

Sun - Rise: 08:00, Set: 15:52, Transit: 11:56. Moon - Rise: 04:40, Set: 13:13. Civil Dark: 16:32 - 07:20. Nautical Dark: 17:15 - 06:37. Astro Dark: 17:56 - 05:56

Total Clouds (% Sky Obscured)

62
70
76
81
100
100
100
100
100
100
98
97
94
88
92
92
82
90
77
67
10
10
20
41

Low Clouds (% Sky Obscured)

57
64
61
72
83
87
88
86
73
53
42
26
5
0
4
0
0
0
0
0
0
0
20
31

Medium Clouds (% Sky Obscured)

62
70
76
81
100
100
100
98
100
96
98
97
94
88
92
92
82
55
77
67
10
10
4
41

High Clouds (% Sky Obscured)

62
70
76
81
100
100
100
84
96
100
46
45
50
30
30
25
20
1
25
25
10
2
1
0

ISS Passover

Visibility (miles)

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

Fog (%)

0
2
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
29
13
19
11
19
29
41
54
39
17
25
30
17
5
2
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
7
8
9
12
11
11
10
9
9
8
6
4
9
9
8
8
7
7
6
6
5
6
5

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
10
10
9
8
8
8
8
9
9
8
8
7
7
6
6
5
5
3

Feels Like (°C)

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

Dew Point (°C)

8
9
9
9
8
9
8
7
6
6
6
6
6
6
6
6
6
5
4
3
3
3
2
1

Relative Humidity (%)

84
84
86
85
85
87
84
84
85
87
85
87
87
85
82
84
85
84
81
81
81
83
83
83

Pressure (mb)

1005
1005
1005
1005
1005
1006
1007
1008
1009
1010
1011
1011
1012
1012
1013
1014
1015
1015
1016
1016
1017
1017
1018
1018

Ozone (du)

333
329
327
324
318
310
305
300
296
296
291
293
300
310
315
316
329
339
337
346
350
356
357
337

Wednesday 17

Waning Crescent 7%

05:53

13:34

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 Bad
23 Bad

Sun - Rise: 08:01, Set: 15:52, Transit: 11:56. Moon - Rise: 05:53, Set: 13:34. Civil Dark: 16:32 - 07:21. Nautical Dark: 17:15 - 06:38. Astro Dark: 17:56 - 05:57

Total Clouds (% Sky Obscured)

35
55
58
80
78
91
97
98
100
100
100
100
100
100
100
98
100
99
99
74
73
73
85
100

Low Clouds (% Sky Obscured)

35
55
58
63
69
50
0
0
26
15
30
42
47
65
76
84
95
95
95
74
73
73
85
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
8
26
34
33
25
100
100
100
68
75
63
96
91
55
33
31
28
37
32

High Clouds (% Sky Obscured)

0
30
35
75
60
73
72
93
100
100
100
100
100
100
100
62
30
25
29
0
0
73
78
83

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
62
100
100
100
90
23
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
1
15
29
40
36
25
12
5
6
5
11
34
45
31

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
3
3
3
3
3
3
3
3
4
4
5
6
7
7
8
9
9
10
11
11
11
12
12

Chance of Frost

Temperature (°C)

3
2
2
1
1
1
1
2
3
4
5
7
8
8
8
8
8
9
9
9
9
9
9
9

Feels Like (°C)

1
3
2
1
1
1
1
1
1
1
3
4
4
5
5
5
5
5
5
5
7
7
7
6

Dew Point (°C)

-0
-1
-2
-2
-2
-2
-2
-1
-0
0
1
1
0
1
2
3
4
4
5
6
6
7
6
6

Relative Humidity (%)

82
81
80
80
80
81
81
81
82
77
71
65
60
59
63
71
74
74
75
78
80
82
80
77

Pressure (mb)

1018
1018
1018
1018
1019
1019
1019
1019
1020
1020
1019
1019
1018
1018
1017
1017
1016
1016
1016
1016
1015
1015
1015
1015

Ozone (du)

338
333
329
327
326
323
322
320
316
311
309
305
304
303
302
302
301
299
300
300
300
302
305
305

Thursday 18

Waning Crescent 3%

07:04

14:04

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: 08:01, Set: 15:52, Transit: 11:57. Moon - Rise: 07:04, Set: 14:04. Civil Dark: 16:32 - 07:21. Nautical Dark: 17:16 - 06:38. Astro Dark: 17:56 - 05:58

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

89
91
88
83
92
94
82
71
60
60
57
60
58
63
66
73
78
85
85
84
85
78
72
69

Medium Clouds (% Sky Obscured)

87
98
100
100
100
71
95
98
80
78
72
66
68
91
100
84
96
95
93
89
87
88
89
91

High Clouds (% Sky Obscured)

94
100
100
100
100
100
70
41
11
41
70
100
100
100
100
100
100
100
75
58
38
58
75
82

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
Very Light Rain

Precipitation Probability (%)

22
32
50
72
80
83
86
81
74
79
69
53
57
53
60
78
89
93
78
60
47
44
48
59

Precipitation Amount (mm)

0
0
0
0.4
0.5
0.4
0.6
0.5
0.3
0.5
0.3
0
0.3
0.2
0.3
0.5
0.6
0.7
0.4
0.2
0
0
0
0.3

Wind Speed/Direction (mph)

11
11
12
11
12
11
10
12
12
12
14
16
17
17
18
19
19
18
18
18
16
13
13
11

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
12
12
12
12
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
76
76
76
76
77
78
78
74
72
71
73
74
80
83
80
80
86
86
87
89
84
81
80

Pressure (mb)

1015
1014
1014
1013
1013
1012
1012
1011
1010
1010
1009
1008
1006
1005
1004
1004
1003
1003
1003
1003
1004
1004
1005
1005

Ozone (du)

304
301
302
300
295
292
291
293
293
292
287
286
282
281
283
284
283
292
290
292
301
308
311
316

Friday 19

Waning Crescent 1%

08:08

14:45

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 Bad
13 Bad
14 Bad
15 OK
16 Good
17 Good
18 OK
19 OK
20 Good
21 OK
22 Bad
23 Bad

Sun - Rise: 08:02, Set: 15:53, Transit: 11:57. Moon - Rise: 08:08, Set: 14:45. Civil Dark: 16:33 - 07:22. Nautical Dark: 17:16 - 06:39. Astro Dark: 17:57 - 05:58

Total Clouds (% Sky Obscured)

100
100
100
99
99
98
74
49
25
36
43
41
46
44
41
27
16
5
42
29
16
30
55
75

Low Clouds (% Sky Obscured)

45
24
5
5
4
4
4
2
0
13
28
41
43
40
38
23
11
0
10
20
16
30
41
47

Medium Clouds (% Sky Obscured)

93
94
96
90
82
72
60
49
25
4
17
4
40
44
41
27
16
5
24
21
1
1
1
0

High Clouds (% Sky Obscured)

92
100
100
98
96
94
69
45
20
15
15
1
0
0
0
0
0
0
0
0
0
21
42
55

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 (%)

52
42
14
11
6
0
0
0
0
0
0
4
26
43
23
5
2
2
1
1
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
10
8
6
6
5
5
5
5
5
5
6
7
9
8
7
6
6
5
5
5
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
69
70
71
73
74
75
77
75
73
69
65
73
78
77
81
82
85
85
85
85
84
84

Pressure (mb)

1006
1008
1009
1010
1011
1011
1012
1012
1013
1014
1014
1015
1015
1015
1015
1015
1016
1016
1016
1017
1017
1017
1017
1016

Ozone (du)

330
335
337
338
336
337
341
347
356
354
352
352
353
347
332
337
345
339
339
330
320
310
303
297

Saturday 20

New Moon 0%

09:02

15:39

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: 15:53, Transit: 11:58. Moon - Rise: 09:02, Set: 15:39. Civil Dark: 16:33 - 07:23. Nautical Dark: 17:16 - 06:39. Astro Dark: 17:57 - 05:59

Total Clouds (% Sky Obscured)

82
93
95
96
97
87
83
91
100
100
99
98
98
97
97
95
95
91
92
92
89
93
96
100

Low Clouds (% Sky Obscured)

51
54
52
47
51
43
38
40
39
46
49
60
69
82
82
72
61
48
50
57
61
59
57
55

Medium Clouds (% Sky Obscured)

1
1
3
9
18
20
15
5
15
10
10
9
14
20
30
35
40
35
47
69
89
93
95
94

High Clouds (% Sky Obscured)

63
67
71
69
76
83
83
91
100
77
51
22
45
72
97
95
95
91
84
79
72
84
92
100

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

Precipitation Probability (%)

1
1
0
1
1
0
1
3
5
22
40
61
72
76
75
69
62
51
38
30
21
15
10
2

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.4
0.4
0.3
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
4
3
3
3
2
2
2
2
2

Relative Humidity (%)

85
84
84
84
82
84
82
82
79
79
79
78
77
75
77
75
77
78
79
78
78
76
78
79

Pressure (mb)

1016
1016
1015
1015
1014
1014
1013
1013
1012
1012
1011
1011
1010
1009
1009
1008
1008
1008
1007
1007
1007
1007
1006
1006

Ozone (du)

290
289
288
287
284
281
278
280
282
285
286
287
288
291
295
299
301
304
307
309
311
312
314
316

Sunday 21

Waxing Crescent 2%

09:43

16:46

Sun - Rise: 08:03, Set: 15:54, Transit: 11:58. Moon - Rise: 09:43, Set: 16:46. Civil Dark: 16:34 - 07:23. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 05:59

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)

Monday 22

Waxing Crescent 6%

10:13

18:00

Sun - Rise: 08:04, Set: 15:54, Transit: 11:59. Moon - Rise: 10:13, Set: 18:00. Civil Dark: 16:34 - 07:24. Nautical Dark: 17:17 - 06:40. Astro Dark: 17:58 - 06:00

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 Streatham Hill, Greater London, United Kingdom (51.44,-0.12)

Generated: 16/12/25 00:28:05. Forecast: 16/12/25 to 22/12/25. Timezone: UTC+0.00