Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 17

Waning Gibbous 85%

01:35

07:21

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

Sun - Rise: 05:58, Set: 20:01, Transit: 12:59. Moon - Rise: 01:35, Set: 07:21. Civil Dark: 20:36 - 05:22. Nautical Dark: 21:21 - 04:38. Astro Dark: 22:12 - 03:44

Total Clouds (% Sky Obscured)

53
3
0
0
0
0
0
69
76
78
69
84
85
82
53
0
0
11
24
36
0
0
0
61

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
39
41
40
40
7
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
11
12
19
10
16
17
17
25
0
0
7
12
14
0
0
0
26

High Clouds (% Sky Obscured)

35
0
0
0
0
0
0
0
0
0
0
0
2
2
0
0
0
8
2
1
0
0
0
6

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
1
2
1
2
3
2
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)

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

Chance of Frost

Temperature (°C)

7
7
6
6
7
10
12
14
15
16
16
17
17
17
16
15
14
12
11
10
9
9
9
8

Feels Like (°C)

5
5
7
7
9
11
12
14
15
14
13
13
13
14
13
13
13
12
10
9
7
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

81
81
82
79
70
63
55
49
42
38
36
39
39
41
43
48
59
66
67
65
58
57
58
60

Pressure (mb)

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

Ozone (du)

422
431
433
430
422
412
403
394
389
386
383
381
380
378
375
375
371
368
369
370
372
370
368
365

Friday 18

Waning Gibbous 78%

02:29

08:03

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

Sun - Rise: 05:56, Set: 20:02, Transit: 12:59. Moon - Rise: 02:29, Set: 08:03. Civil Dark: 20:38 - 05:20. Nautical Dark: 21:23 - 04:35. Astro Dark: 22:15 - 03:41

Total Clouds (% Sky Obscured)

62
37
68
87
45
100
100
100
90
93
47
62
38
98
100
100
100
93
100
99
82
100
99
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
60
31
22
17
29
32
4
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

31
37
66
75
45
30
87
100
90
93
10
62
38
98
95
100
91
82
98
86
79
87
99
97

High Clouds (% Sky Obscured)

36
37
45
23
21
100
80
100
45
63
26
34
30
43
90
96
100
47
100
20
38
100
78
32

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
7

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
2
6
7
11
14
13
4
13
18
45
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)

3
4
4
5
8
10
11
12
12
12
13
14
11
12
10
8
8
9
13
12
12
13
12
10

Chance of Frost

Temperature (°C)

8
8
8
8
10
12
14
16
16
16
17
17
17
17
16
15
13
12
11
11
10
11
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
70
77
78
74
68
61
56
55
54
50
53
59
56
60
66
69
70
73
71
66
65
65
74

Pressure (mb)

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

Ozone (du)

362
362
363
365
367
370
371
369
370
370
368
369
367
366
366
366
366
367
368
369
368
369
370
372

Saturday 19

Waning Gibbous 69%

03:10

09:01

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 OK
01 Bad
02 Bad
03 Bad

Sun - Rise: 05:54, Set: 20:04, Transit: 12:59. Moon - Rise: 03:10, Set: 09:01. Civil Dark: 20:40 - 05:18. Nautical Dark: 21:25 - 04:33. Astro Dark: 22:17 - 03:37

Total Clouds (% Sky Obscured)

100
92
100
100
100
100
99
99
99
100
100
96
95
83
85
83
76
75
64
86
44
62
68
75

Low Clouds (% Sky Obscured)

0
6
37
46
48
66
49
46
47
48
41
58
51
48
30
47
34
29
31
36
37
45
40
46

Medium Clouds (% Sky Obscured)

88
87
93
89
91
100
98
23
23
30
35
27
23
34
29
83
76
75
64
63
6
4
3
4

High Clouds (% Sky Obscured)

100
61
100
100
100
66
15
74
61
100
100
38
39
8
30
34
27
36
28
69
2
30
36
34

ISS Passover

Visibility (miles)

9
9
9
9
6
6
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
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
20
37
61
59
42
18
2
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
9
9
9
9
10
10
11
11
12
12
12
12
12
12
11
10
10
9
8
8
7
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
76
72
69
78
87
88
85
84
80
77
63
61
61
62
64
64
64
66
70
75
77
78
78

Pressure (mb)

1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1007

Ozone (du)

373
373
374
375
378
381
382
382
381
382
381
382
381
380
378
376
376
375
374
376
375
374
373
371

Sunday 20

Waning Gibbous 59%

03:39

10:12

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: 05:52, Set: 20:06, Transit: 12:59. Moon - Rise: 03:39, Set: 10:12. Civil Dark: 20:42 - 05:16. Nautical Dark: 21:27 - 04:30. Astro Dark: 22:20 - 03:34

Total Clouds (% Sky Obscured)

79
81
87
88
90
93
92
81
93
90
98
97
98
99
100
100
100
100
83
67
50
58
71
82

Low Clouds (% Sky Obscured)

52
57
62
57
58
59
72
81
93
76
54
35
50
63
78
60
43
29
24
27
37
51
65
82

Medium Clouds (% Sky Obscured)

11
21
37
45
64
73
62
64
67
65
64
50
44
41
43
48
89
91
69
29
9
5
27
36

High Clouds (% Sky Obscured)

28
21
17
16
13
12
21
26
31
29
28
27
19
11
2
8
12
18
30
13
1
4
3
3

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
2
0
0
2
2
1
0
0
1
1
0
10
16
18
16
14
14
16
14
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
3
3
4
5
7
8
10
10
10
10
10
9
9
8
8
7
7
6
7
7
7
6

Dew Point (°C)

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

Relative Humidity (%)

78
78
79
79
75
78
74
62
57
55
54
60
61
62
64
67
69
72
74
76
78
81
85
87

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1007
1007
1007
1007
1006
1006
1006
1006

Ozone (du)

370
368
366
367
366
364
364
364
366
365
364
364
363
364
364
363
363
365
366
366
366
366
365
365

Monday 21

Third Quarter 48%

04:00

11:32

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

Sun - Rise: 05:50, Set: 20:07, Transit: 12:59. Moon - Rise: 04:00, Set: 11:32. Civil Dark: 20:44 - 05:13. Nautical Dark: 21:30 - 04:27. Astro Dark: 22:23 - 03:31

Total Clouds (% Sky Obscured)

84
90
94
74
55
24
35
48
66
74
82
95
85
75
63
57
44
31
40
54
64
72
81
87

Low Clouds (% Sky Obscured)

83
90
94
71
46
17
21
26
32
42
52
65
60
56
52
53
36
20
13
7
0
0
0
6

Medium Clouds (% Sky Obscured)

5
2
2
2
2
0
10
21
32
40
44
51
35
25
14
52
25
13
7
7
7
8
8
13

High Clouds (% Sky Obscured)

8
8
2
1
5
1
1
0
0
0
0
1
1
1
1
1
0
0
2
4
9
7
6
5

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

Precipitation Probability (%)

0
1
0
0
0
0
1
7
14
19
30
37
40
51
53
27
21
14
10
7
4
9
10
6

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

8
8
8
8
9
10
12
14
15
17
16
16
16
16
16
15
14
13
12
11
11
10
10
10

Feels Like (°C)

6
6
6
6
7
8
10
11
12
14
13
13
13
13
13
14
14
13
13
12
12
12
9
9

Dew Point (°C)

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

Relative Humidity (%)

88
90
87
85
85
80
64
57
53
51
49
52
52
53
55
66
71
77
83
86
88
90
88
87

Pressure (mb)

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

Ozone (du)

366
365
366
368
369
370
374
378
380
381
382
382
383
383
382
380
379
378
378
379
379
380
377
374

Tuesday 22

Waning Crescent 37%

04:00

12:56

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 OK
03 Good

Sun - Rise: 05:48, Set: 20:09, Transit: 12:58. Moon - Rise: 04:00, Set: 12:56. Civil Dark: 20:46 - 05:11. Nautical Dark: 21:32 - 04:25. Astro Dark: 22:26 - 03:28

Total Clouds (% Sky Obscured)

88
89
94
95
92
86
87
91
93
93
94
94
92
90
87
83
83
80
78
75
73
54
32
15

Low Clouds (% Sky Obscured)

21
27
46
48
41
38
36
34
31
43
60
69
67
63
58
60
66
70
70
69
68
51
32
15

Medium Clouds (% Sky Obscured)

18
24
20
33
47
66
77
87
93
93
94
93
85
78
70
50
32
11
11
11
9
9
8
4

High Clouds (% Sky Obscured)

11
15
19
20
27
30
17
14
10
5
5
4
3
6
3
6
10
11
11
7
2
1
1
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 (%)

17
18
16
14
8
0
7
8
5
13
16
13
22
23
16
19
16
4
5
5
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
4
4
4
5
6
6
6
6
6
6
6
6
6
5
4
3
2
3
3
2
2
2
2

Chance of Frost

Temperature (°C)

10
10
10
10
11
12
13
14
15
16
16
16
16
16
16
15
14
13
12
12
11
11
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
84
85
85
77
70
62
55
48
41
40
39
38
41
45
49
56
63
73
76
79
81
83
84

Pressure (mb)

1013
1014
1014
1015
1015
1016
1017
1017
1017
1017
1017
1018
1018
1018
1019
1019
1020
1020
1021
1022
1022
1023
1023
1023

Ozone (du)

372
371
371
371
371
372
373
373
373
374
374
374
374
374
375
375
375
374
374
373
373
372
373
373

Wednesday 23

Waning Crescent 26%

04:17

14:22

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

Sun - Rise: 05:46, Set: 20:11, Transit: 12:58. Moon - Rise: 04:17, Set: 14:22. Civil Dark: 20:47 - 05:09. Nautical Dark: 21:34 - 04:22. Astro Dark: 22:29 - 03:24

Total Clouds (% Sky Obscured)

25
34
45
30
16
1
20
40
59
62
65
65
58
58
68
61
55
42
27
14
4

Low Clouds (% Sky Obscured)

25
34
45
30
16
0
12
23
34
35
35
35
35
43
57
57
54
42
27
14
4

Medium Clouds (% Sky Obscured)

3
4
4
3
1
0
2
3
5
9
10
16
12
7
6
4
2
0
0
0
0

High Clouds (% Sky Obscured)

1
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
8
7
6
7
8
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

Precipitation Type

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
10
13
9
17
18
14
28
32
35
27
22
18
14
9
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
9
9
9
11
13
14
15
17
18
18
19
19
18
17
16
15
14
13
12
12

Feels Like (°C)

10
10
10
9
10
11
12
12
13
14
19
19
18
18
19
19
14
14
14
13
13

Dew Point (°C)

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

Relative Humidity (%)

84
82
81
78
71
64
57
51
47
42
40
39
37
46
55
67
73
78
83
86
87

Pressure (mb)

1024
1024
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027
1028
1028
1028
1028

Ozone (du)

374
376
378
380
379
378
377
376
376
375
372
370
367
364
360
357
355
353
351
349
347

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

Generated: 17/04/25 03:27:52. Forecast: 17/04/25 to 23/04/25. Timezone: UTC+1.00