Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 18

Waning Gibbous 78%

01:44

08:23

12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 OK
19 OK
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

Sun - Rise: 06:11, Set: 20:13, Transit: 13:13. Moon - Rise: 01:44, Set: 08:23. Civil Dark: 20:48 - 05:36. Nautical Dark: 21:31 - 04:52. Astro Dark: 22:21 - 04:02

Total Clouds (% Sky Obscured)

100
100
100
70
26
34
26
21
62
100
100
99
99
100
100
100
98
100
100
98
100
100
100
100

Low Clouds (% Sky Obscured)

52
44
48
34
29
26
23
27
57
55
66
87
92
93
100
100
98
100
100
95
100
92
94
99

Medium Clouds (% Sky Obscured)

5
2
4
32
12
9
81
91
85
96
94
96
97
85
73
90
88
74
30
78
100
100
82
100

High Clouds (% Sky Obscured)

10
32
3
30
91
90
70
57
58
16
75
77
5
4
1
89
96
80
81
94
100
100
100
100

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
-
-
-
-
9
8
9
5
9
9
9
9
4
9
1
0
0

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
42
85
95
46
13
20
40
53
40
49
79
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
1.8
0
0
0
0
0.4
0
0
0.3
0.9
1

Wind Speed/Direction (mph)

10
11
10
10
10
10
10
10
9
8
10
7
7
7
9
10
11
13
14
14
16
18
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
78
78
78
75
75
77
80
85
86
88
93
93
93
93
96
95
91
96
96
96
98
98
98

Pressure (mb)

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

Ozone (du)

371
369
368
366
362
360
360
364
367
368
369
369
368
368
368
373
373
373
374
374
375
375
375
376

Saturday 19

Waning Gibbous 69%

02:37

09:21

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:09, Set: 20:14, Transit: 13:13. Moon - Rise: 02:37, Set: 09:21. Civil Dark: 20:49 - 05:34. Nautical Dark: 21:33 - 04:50. Astro Dark: 22:23 - 03:59

Total Clouds (% Sky Obscured)

100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
92
98
96
96

Low Clouds (% Sky Obscured)

97
100
92
93
97
93
83
91
93
96
94
90
92
95
92
93
94
79
92
81
80
90
86
84

Medium Clouds (% Sky Obscured)

96
56
49
52
43
95
100
100
100
100
78
100
99
100
100
99
70
72
59
44
33
33
21
28

High Clouds (% Sky Obscured)

60
50
100
100
76
100
100
89
100
100
100
87
100
100
99
80
85
80
0
2
6
18
11
45

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
0
0
0
0
0
5
3
7
8
0
0
0
0
0
1
0
1

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

Precipitation Probability (%)

95
93
95
95
95
80
95
95
95
95
95
95
95
95
95
71
62
44
26
29
16
14
19
7

Precipitation Amount (mm)

1.5
0.6
1
1.4
0.6
0.4
1
1
1.2
1.5
2
1.7
1.2
1.5
0.9
0.3
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
17
17
15
16
17
17
17
17
16
15
17
19
20
19
16
14
11
10
10
12
13
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
98
98
98
96
100
98
98
98
100
96
96
96
96
98
98
98
98
98
98
98
96

Pressure (mb)

1006
1005
1004
1004
1003
1003
1003
1003
1003
1003
1003
1002
1002
1001
1001
1001
1001
1002
1002
1002
1003
1004
1004
1005

Ozone (du)

378
378
380
381
382
381
381
381
381
382
383
382
382
381
382
385
387
384
382
382
381
381
379
378

Sunday 20

Waning Gibbous 59%

03:18

10:31

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
04 Bad
05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:07, Set: 20:16, Transit: 13:13. Moon - Rise: 03:18, Set: 10:31. Civil Dark: 20:51 - 05:32. Nautical Dark: 21:36 - 04:47. Astro Dark: 22:26 - 03:56

Total Clouds (% Sky Obscured)

97
98
100
99
98
96
100
100
99
90
78
95
82
83
93
92
78
40
50
58
64
61
49
51

Low Clouds (% Sky Obscured)

88
94
100
95
95
86
100
100
98
80
68
51
57
49
48
41
33
4
4
9
19
31
36
44

Medium Clouds (% Sky Obscured)

23
22
38
32
35
46
55
64
49
28
40
69
68
74
41
39
36
21
30
32
35
31
13
3

High Clouds (% Sky Obscured)

33
25
7
33
6
32
47
24
25
54
39
79
39
16
1
0
1
1
1
1
0
1
1
1

ISS Passover

Visibility (miles)

8
8
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 (%)

4
2
13
4
5
1
10
1
0
0
0
0
0
0
0
0
1
2
4
0
0
0
1
4

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)

14
14
12
11
10
10
9
8
7
7
8
8
7
7
7
7
7
7
7
7
7
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
10
10
10
9
9
7
6
6
4
4
3
3
3
3
4
6
6
7
9

Relative Humidity (%)

96
93
92
89
87
87
89
87
86
84
80
74
78
69
67
66
67
69
76
81
82
80
80
81

Pressure (mb)

1005
1005
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1007

Ozone (du)

379
380
379
378
378
378
378
377
376
376
377
377
377
377
375
373
373
374
374
375
375
375
377
376

Monday 21

Third Quarter 48%

03:49

11:50

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:05, Set: 20:18, Transit: 13:12. Moon - Rise: 03:49, Set: 11:50. Civil Dark: 20:53 - 05:30. Nautical Dark: 21:38 - 04:45. Astro Dark: 22:29 - 03:53

Total Clouds (% Sky Obscured)

73
53
84
77
72
88
85
90
95
100
99
98
95
98
99
98
99
98
98
93
87
81
73
69

Low Clouds (% Sky Obscured)

71
53
73
59
29
25
25
35
41
46
61
76
87
73
55
41
53
69
84
78
71
67
61
52

Medium Clouds (% Sky Obscured)

5
13
11
17
24
28
29
27
30
28
37
44
50
53
56
49
33
16
0
23
4
0
0
0

High Clouds (% Sky Obscured)

2
2
30
2
14
46
42
60
64
80
80
81
76
76
76
72
86
94
91
68
50
35
5
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
None
None
None
None
None
None
None

Precipitation Probability (%)

19
24
20
18
8
5
17
9
8
2
8
13
1
3
6
5
7
8
4
5
7
7
6
13

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)

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

Chance of Frost

Temperature (°C)

13
14
14
14
14
13
13
12
12
11
11
10
10
9
9
9
9
9
9
9
10
11
12
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
92
92
78
80
80
86
87
88
88
88
87
91
90
88
87
85
85
87
87
88
87
83

Pressure (mb)

1006
1006
1006
1006
1005
1005
1005
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1008
1008
1008
1009
1009
1010

Ozone (du)

374
373
374
373
372
370
368
367
365
362
360
360
363
364
366
366
365
367
367
363
362
364
364
365

Tuesday 22

Waning Crescent 37%

04:11

No Set

12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 Bad
19 Bad
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

Sun - Rise: 06:03, Set: 20:19, Transit: 13:12. Moon - Rise: 04:11, Set: No Set. Civil Dark: 20:55 - 05:27. Nautical Dark: 21:40 - 04:42. Astro Dark: 22:31 - 03:50

Total Clouds (% Sky Obscured)

65
71
75
84
76
39
57
64
87
100
90
78
68
79
88
97
89
81
73
66
57
50
67
80

Low Clouds (% Sky Obscured)

49
58
69
77
66
33
26
17
9
0
0
0
0
8
15
24
30
36
42
45
45
47
63
79

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
11
5
7
10
19
29
42
47
77
90
54
67
66
57
42
35
22
37

High Clouds (% Sky Obscured)

1
0
5
2
10
22
43
51
80
99
81
59
38
56
69
82
65
48
30
27
19
15
34
62

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
15
14
3
3
2
1
2
2
1
3
0
0
0
0
0
1
1
1
1
1
1
15
30

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)

12
13
13
13
14
13
12
12
10
8
7
6
5
4
4
4
4
4
4
4
5
9
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
79
79
79
74
75
77
81
85
91
91
91
93
94
94
96
94
94
94
93
90
83
73
66

Pressure (mb)

1010
1011
1011
1011
1012
1012
1012
1013
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017

Ozone (du)

365
367
371
372
370
366
364
363
361
361
362
362
362
362
363
364
365
366
368
372
376
377
376
371

Wednesday 23

Waning Crescent 26%

04:28

13:13

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:01, Set: 20:21, Transit: 13:12. Moon - Rise: 04:28, Set: 13:13. Civil Dark: 20:57 - 05:25. Nautical Dark: 21:42 - 04:40. Astro Dark: 22:34 - 03:47

Total Clouds (% Sky Obscured)

97
97
94
99
99
98
98
95
93
90
89
88
87
80
79
76
79
77
71
76
82
87
84
83

Low Clouds (% Sky Obscured)

95
96
94
98
96
91
86
73
60
50
42
35
30
32
37
37
46
55
64
67
69
71
64
55

Medium Clouds (% Sky Obscured)

43
41
29
22
12
5
5
8
13
23
34
42
47
55
60
60
39
20
6
7
8
9
12
18

High Clouds (% Sky Obscured)

88
63
56
75
80
80
80
52
36
29
20
20
20
17
11
9
7
5
5
3
11
12
10
8

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

Precipitation Probability (%)

47
95
95
95
95
86
58
36
22
9
12
14
12
25
36
21
35
28
3
14
20
3
18
21

Precipitation Amount (mm)

0
0.6
0.9
0.6
0.6
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
14
15
15
16
12
10
11
11
11
10
9
8
7
6
6
5
4
2
1
2
5
8
9

Chance of Frost

Temperature (°C)

13
14
14
13
13
13
13
13
12
11
10
9
8
8
8
8
8
8
8
8
10
12
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
60
64
69
74
77
81
86
88
90
91
91
93
91
93
93
93
93
93
93
88
86
83
82

Pressure (mb)

1017
1017
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017
1017
1017

Ozone (du)

364
360
358
357
355
353
352
350
349
349
348
347
346
345
345
345
345
346
346
347
347
347
348
348

Thursday 24

Waning Crescent 17%

04:43

14:38

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:59, Set: 20:22, Transit: 13:12. Moon - Rise: 04:43, Set: 14:38. Civil Dark: 20:58 - 05:23. Nautical Dark: 21:44 - 04:37. Astro Dark: 22:37 - 03:44

Total Clouds (% Sky Obscured)

86
92
94
94
92
92
94
84
75
65
77
88
100
90
81
71
78
86
93
84
75
66
78
90

Low Clouds (% Sky Obscured)

44
56
67
80
68
58
44
42
40
37
42
48
53
53
52
53
65
78
90
84
75
66
78
88

Medium Clouds (% Sky Obscured)

24
24
24
21
29
36
42
28
23
15
20
24
29
28
22
14
16
16
16
12
6
0
0
0

High Clouds (% Sky Obscured)

6
4
3
1
2
2
2
1
1
1
1
1
0
1
1
1
2
6
15
33
49
60
63
67

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
6

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
21
24
24
24
20
6
10
9
3
5
4
1
4
3
0
10
10
4
12
14
14
16
18

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
12
13
14
15
13
12
11
10
9
8
7
7
6
6
6
6
5
5
5
5
5
6
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
11
14
14
13
13
13
13
11
12
12
11
11
10
8
9
8
9
8
8
9
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

80
79
80
80
80
82
83
86
89
92
96
95
96
96
95
95
95
93
93
95
91
92
92
93

Pressure (mb)

1017
1017
1017
1018
1018
1018
1018
1019
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022

Ozone (du)

348
348
348
348
348
348
348
349
348
348
348
347
346
346
345
344
344
344
344
344
344
344
344
343

Welcome to Clear Outside

Forecast for Alphington, Devon, United Kingdom (50.70,-3.52)

Generated: 17/04/25 23:31:39. Forecast: 18/04/25 to 24/04/25. Timezone: UTC+1.00