Clear Outside v1.0 - International Weather Forecasts For Astronomers

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 OK
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)

80
72
81
64
79
83
82
85
92
75
81
94
100
100
97
93
42
59
96
96
95
84
84
88

Low Clouds (% Sky Obscured)

37
40
39
40
33
73
62
77
12
38
50
78
71
56
55
34
23
40
44
46
24
0
10
27

Medium Clouds (% Sky Obscured)

22
20
16
52
31
29
28
22
25
24
13
23
24
28
92
36
17
15
31
30
31
65
26
25

High Clouds (% Sky Obscured)

3
13
4
3
3
3
3
3
3
46
51
61
92
48
61
3
8
4
69
3
4
2
2
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
1
3
1
4
4
2
1
0
0
2
5
9
4
3
1
1
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)

9
9
8
8
10
9
10
11
11
10
9
7
7
7
6
6
5
5
4
4
4
3
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
85
77
69
62
59
60
59
63
73
74
77
79
80
87
88
91
91
93
93
93
95

Pressure (mb)

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

Ozone (du)

373
371
370
370
368
366
364
363
363
363
363
361
360
360
362
363
362
362
361
363
363
363
363
364

Monday 21

Third Quarter 48%

04:00

11:32

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 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)

72
85
63
65
64
73
87
95
99
100
99
100
100
85
77
55
53
89
99
88
77
65
41
98

Low Clouds (% Sky Obscured)

42
64
53
44
34
7
45
53
62
59
55
69
55
74
60
53
53
51
0
39
38
22
22
32

Medium Clouds (% Sky Obscured)

16
30
17
15
17
14
14
30
17
21
18
18
20
85
74
47
38
3
0
0
5
17
3
32

High Clouds (% Sky Obscured)

2
10
11
21
26
50
67
82
96
100
88
100
100
20
10
0
0
74
96
79
59
22
21
96

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
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
4
35
43
50
54
50
51
45
52
33
9
5
1
0
1
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)

0
1
1
1
1
1
0
2
4
9
10
9
10
11
7
5
5
6
7
7
8
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
95
91
81
71
60
53
49
53
54
50
52
69
74
76
75
79
83
84
84
84
82
84

Pressure (mb)

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

Ozone (du)

363
363
365
366
367
368
369
367
366
366
364
364
364
363
366
375
372
369
367
367
367
367
368
368

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

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)

95
97
93
95
89
91
94
85
88
97
91
100
95
81
89
30
30
30
31
100
100
100
100
100

Low Clouds (% Sky Obscured)

38
36
28
15
27
26
27
44
33
11
0
21
28
33
55
5
0
0
0
0
4
14
25
46

Medium Clouds (% Sky Obscured)

53
43
40
41
40
66
94
51
43
92
91
33
22
21
30
0
3
7
5
0
70
88
93
100

High Clouds (% Sky Obscured)

87
91
74
57
40
70
62
58
47
44
35
35
30
2
8
30
25
30
26
100
100
100
100
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
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
8
28
19
30
12
16
10
6
0
0
0
0
0
0
1
5
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)

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

Chance of Frost

Temperature (°C)

8
7
7
7
8
10
12
13
14
15
16
16
16
15
15
15
13
12
10
9
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
82
73
63
58
53
47
43
44
43
44
44
46
47
61
70
74
76
77
77
81
82

Pressure (mb)

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

Ozone (du)

368
367
368
370
370
371
372
372
373
373
375
376
377
380
382
379
378
376
372
372
371
371
366
363

Wednesday 23

Waning Crescent 26%

04:17

14:22

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

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)

100
100
100
100
100
100
99
99
85
88
96
94
82
62
64
45
41
40
52
64
75
78
84
87

Low Clouds (% Sky Obscured)

57
68
78
80
86
92
93
92
85
88
91
89
75
59
48
38
32
30
30
37
50
62
74
87

Medium Clouds (% Sky Obscured)

100
100
100
100
100
83
78
85
64
55
53
32
17
8
0
1
2
3
11
23
33
20
10
0

High Clouds (% Sky Obscured)

100
100
100
100
100
96
90
85
76
48
24
0
2
5
8
5
2
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

8
5
2
2
2
9
9
9
9
6
6
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

67
95
95
95
95
95
93
76
56
50
42
26
24
13
3
0
7
0
1
1
0
0
0
0

Precipitation Amount (mm)

0.3
0.7
1.7
2.3
1.9
1
0.6
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
11
14
15
13
12
7
5
7
8
9
11
11
11
10
9
9
8
8
8
8
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
85
91
93
93
93
96
95
77
71
68
70
71
76
80
80
83
84
82
84
85
84
82
84

Pressure (mb)

1015
1014
1013
1012
1012
1012
1011
1011
1011
1011
1012
1012
1013
1014
1015
1015
1016
1017
1018
1019
1019
1020
1020
1021

Ozone (du)

366
365
370
376
380
387
391
394
395
395
388
383
378
370
367
367
366
366
366
367
369
372
372
372

Thursday 24

Waning Crescent 17%

04:30

15:48

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
00 Good
01 OK
02 OK
03 Bad

Sun - Rise: 05:44, Set: 20:12, Transit: 12:58. Moon - Rise: 04:30, Set: 15:48. Civil Dark: 20:49 - 05:07. Nautical Dark: 21:36 - 04:20. Astro Dark: 22:32 - 03:21

Total Clouds (% Sky Obscured)

84
84
82
77
73
68
76
83
90
89
87
86
76
66
56
64
58
53
41
22
14
31
46
68

Low Clouds (% Sky Obscured)

84
84
82
74
67
61
59
55
52
45
37
30
32
38
44
32
21
10
7
3
0
22
44
60

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
15
32
48
47
41
40
31
26
21
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
1
18
20
10
10
13
20
10
2
5
11
13
4
4
3
1
4
7
14
17
22
26

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
9
1
0
1
0
2
2
3
2
1
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)

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

Chance of Frost

Temperature (°C)

8
8
8
8
9
10
11
12
13
14
15
15
15
14
13
12
11
10
9
9
8
7
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
84
88
85
81
74
73
68
66
63
62
61
60
60
61
62
64
66
68
69
71
74
75
76

Pressure (mb)

1021
1022
1022
1023
1023
1024
1024
1025
1025
1025
1024
1024
1024
1024
1024
1025
1025
1026
1026
1026
1026
1027
1026
1026

Ozone (du)

371
370
368
367
368
367
366
365
363
361
360
359
359
359
357
356
354
353
351
349
347
345
344
343

Friday 25

Waning Crescent 9%

04:43

17:17

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

Sun - Rise: 05:42, Set: 20:14, Transit: 12:58. Moon - Rise: 04:43, Set: 17:17. Civil Dark: 20:51 - 05:05. Nautical Dark: 21:38 - 04:17. Astro Dark: 22:35 - 03:18

Total Clouds (% Sky Obscured)

69
71
76
82
83
80
76
73
58
58
58
59
54
47
47
37
13
5
22
39
56
48
50
47

Low Clouds (% Sky Obscured)

52
53
43
37
38
36
34
30
31
36
44
44
39
32
25
16
8
0
18
36
54
45
37
29

Medium Clouds (% Sky Obscured)

1
2
3
3
4
4
27
49
58
58
46
33
32
32
36
37
13
5
22
39
56
48
50
47

High Clouds (% Sky Obscured)

34
33
32
29
34
35
18
14
10
5
5
5
5
15
20
25
13
5
22
39
30
30
35
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
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
1
4
10
15

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

Chance of Frost

Temperature (°C)

6
6
6
6
7
9
10
11
12
13
14
14
15
14
13
12
11
10
10
9
9
8
8
8

Feels Like (°C)

5
4
4
4
5
5
5
6
7
7
11
11
11
11
11
11
8
8
8
8
8
7
6
6

Dew Point (°C)

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

Relative Humidity (%)

79
76
76
75
70
63
59
55
52
50
48
46
44
47
51
56
60
67
72
74
75
78
78
81

Pressure (mb)

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

Ozone (du)

341
340
339
338
338
338
338
337
337
336
337
337
337
339
341
343
343
343
343
344
345
346
346
346

Saturday 26

Waning Crescent 3%

04:56

18:48

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

Sun - Rise: 05:40, Set: 20:16, Transit: 12:58. Moon - Rise: 04:56, Set: 18:48. Civil Dark: 20:53 - 05:02. Nautical Dark: 21:41 - 04:15. Astro Dark: 22:38 - 03:14

Total Clouds (% Sky Obscured)

43
44
41
45
49
53
46
40
33
35
37
44
45
67
70
71
72
64
63
63
64

Low Clouds (% Sky Obscured)

29
30
30
35
43
48
40
33
25
18
16
15
20
40
55
66
72
64
63
63
64

Medium Clouds (% Sky Obscured)

43
44
41
45
49
53
46
40
33
35
37
44
45
67
63
63
58
58
54
45
50

High Clouds (% Sky Obscured)

43
44
41
45
40
20
10
15
15
15
14
18
19
10
5
5
5
5
5
5
15

ISS Passover

Visibility (miles)

9
9
9
8
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

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 (%)

24
32
41
42
41
37
38
36
30
32
30
24
27
26
24
24
24
17
19
18
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
87
90
95
93
93
93
93
93
93
93
93
93
93
95
95
95
96
96
96
98

Pressure (mb)

1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026

Ozone (du)

346
348
349
351
352
353
354
353
353
352
352
352
351
352
353
354
356
358
360
362
363

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

Generated: 20/04/25 04:17:01. Forecast: 20/04/25 to 26/04/25. Timezone: UTC+1.00