Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 14%

07:01

01:09

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

Sun - Rise: 05:57, Set: 20:12, Transit: 13:05. Moon - Rise: 07:01, Set: 01:09. Civil Dark: 20:48 - 05:20. Nautical Dark: 21:33 - 04:35. Astro Dark: 22:26 - 03:41

Total Clouds (% Sky Obscured)

61
57
58
0
0
74
90
74
85
83
70
65
46
29
10
0
22
24
43
56
68
72
83
72

Low Clouds (% Sky Obscured)

2
9
18
0
0
6
17
20
0
13
61
39
35
0
0
0
22
24
43
56
68
72
83
72

Medium Clouds (% Sky Obscured)

2
3
0
0
0
55
69
49
68
58
44
44
24
25
9
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

61
57
58
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
4

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
1
17
7
19
6
17
5
6
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)

2
2
6
9
10
10
10
10
9
10
10
10
9
9
8
9
9
8
8
8
8
9
8
9

Chance of Frost

Temperature (°C)

4
6
8
9
10
11
12
13
12
12
12
12
11
9
8
7
6
5
4
4
4
3
4
3

Feels Like (°C)

2
4
5
5
7
8
9
9
9
9
8
8
8
8
6
5
3
3
3
2
1
0
1
1

Dew Point (°C)

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

Relative Humidity (%)

96
88
73
66
62
60
60
63
69
70
70
72
76
85
90
93
93
96
98
98
98
96
98
100

Pressure (mb)

1024
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1025
1025
1025
1026
1026
1026
1026
1026
1026

Ozone (du)

398
400
401
403
403
403
403
403
403
403
404
403
403
402
401
401
402
403
404
406
407
407
407
406

Tuesday 21

Waxing Crescent 24%

07:54

02:13

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

Sun - Rise: 05:55, Set: 20:13, Transit: 13:05. Moon - Rise: 07:54, Set: 02:13. Civil Dark: 20:50 - 05:18. Nautical Dark: 21:35 - 04:32. Astro Dark: 22:29 - 03:38

Total Clouds (% Sky Obscured)

72
69
95
100
100
85
83
74
66
55
55
0
0
0
0
1
0
0
38
52
61
73
83
70

Low Clouds (% Sky Obscured)

72
68
41
45
100
64
40
45
45
43
55
0
0
0
0
0
0
0
38
52
59
67
70
64

Medium Clouds (% Sky Obscured)

0
0
0
2
16
38
65
37
37
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

2
15
62
96
85
64
36
3
1
1
0
0
0
0
0
1
0
0
9
10
19
40
57
32

ISS Passover

Visibility (miles)

1
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
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
16
1
0
8
15
14
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)

10
12
14
16
16
17
15
17
17
18
17
17
16
15
13
13
13
14
14
14
13
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
93
85
74
67
63
63
65
76
70
68
69
72
76
78
78
82
86
89
89
93
94
96
96

Pressure (mb)

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

Ozone (du)

406
406
405
404
402
401
399
399
399
399
399
399
398
398
399
399
396
394
393
391
389
387
385
383

Wednesday 22

Waxing Crescent 35%

09:05

02:57

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

Sun - Rise: 05:53, Set: 20:15, Transit: 13:05. Moon - Rise: 09:05, Set: 02:57. Civil Dark: 20:51 - 05:16. Nautical Dark: 21:38 - 04:30. Astro Dark: 22:31 - 03:35

Total Clouds (% Sky Obscured)

57
33
33
15
55
36
36
45
50
36
10
14
55
34
2
1
0
0
0
0
0
11
20
33

Low Clouds (% Sky Obscured)

57
33
33
14
52
27
8
2
0
0
0
0
0
0
0
0
0
0
0
0
0
11
20
33

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)

20
15
15
15
15
15
15
15
15
9
3
3
15
11
1
1
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)

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

Chance of Frost

Temperature (°C)

4
6
8
10
12
13
14
15
15
15
15
14
12
11
9
7
6
6
5
4
4
3
3
2

Feels Like (°C)

-0
1
3
4
6
7
8
9
9
10
10
10
9
5
4
4
3
3
2
1
1
-0
0
-1

Dew Point (°C)

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

Relative Humidity (%)

94
86
81
72
64
58
55
56
59
62
62
65
69
68
70
71
72
76
80
85
83
88
91
93

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1027
1028
1029
1029
1030
1030
1030
1030
1031
1031
1031
1031

Ozone (du)

383
382
383
383
383
382
380
379
376
374
372
372
373
372
370
371
375
380
383
385
390
394
395
394

Thursday 23

Waxing Crescent 46%

10:27

03:26

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

Sun - Rise: 05:51, Set: 20:17, Transit: 13:05. Moon - Rise: 10:27, Set: 03:26. Civil Dark: 20:53 - 05:14. Nautical Dark: 21:40 - 04:27. Astro Dark: 22:34 - 03:32

Total Clouds (% Sky Obscured)

20
11
0
0
0
0
0
0
0
0
0
0
0
0
0
7
14
21
40
60
80
77
77
74

Low Clouds (% Sky Obscured)

20
11
0
0
0
0
0
0
0
0
0
0
0
0
0
6
12
19
38
57
76
72
77
74

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

Chance of Frost

Temperature (°C)

3
5
7
9
10
12
14
15
15
16
15
15
14
12
10
8
7
5
4
3
2
2
2
2

Feels Like (°C)

0
2
4
5
7
9
10
11
12
13
13
12
11
9
7
5
4
3
2
2
0
0
0
-1

Dew Point (°C)

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

Relative Humidity (%)

88
76
70
65
64
60
57
55
55
57
64
68
72
79
84
85
85
91
93
94
94
93
94
93

Pressure (mb)

1031
1031
1031
1031
1031
1031
1030
1030
1029
1029
1028
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028

Ozone (du)

391
387
385
385
384
383
382
381
381
381
382
383
383
382
381
380
379
377
375
373
372
372
372
371

Friday 24

First Quarter 58%

11:53

03:47

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

Sun - Rise: 05:49, Set: 20:18, Transit: 13:04. Moon - Rise: 11:53, Set: 03:47. Civil Dark: 20:55 - 05:12. Nautical Dark: 21:42 - 04:24. Astro Dark: 22:37 - 03:28

Total Clouds (% Sky Obscured)

66
58
50
37
19
0
1
3
1
0
0
0
3
3
0
0
0
0
2
5
7
25
43
62

Low Clouds (% Sky Obscured)

66
57
50
36
19
0
0
0
0
0
0
0
0
0
0
0
0
0
2
5
6
24
43
59

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)

1
1
2
2
1
0
1
3
1
0
0
0
3
3
0
0
0
0
0
0
0
1
2
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 (%)

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)

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

Chance of Frost

Temperature (°C)

2
4
6
8
10
11
13
14
14
15
14
14
12
10
9
7
6
5
5
4
3
3
3
3

Feels Like (°C)

0
1
3
4
6
7
9
10
10
12
12
11
10
9
9
8
7
6
5
2
2
1
1
1

Dew Point (°C)

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

Relative Humidity (%)

89
77
67
61
58
54
55
56
57
58
63
67
70
76
81
88
86
83
82
83
88
91
89
86

Pressure (mb)

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

Ozone (du)

370
370
369
368
369
372
374
374
375
376
375
374
373
372
370
368
368
368
368
367
366
365
365
365

Saturday 25

Waxing Gibbous 68%

13:17

04:02

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

Sun - Rise: 05:47, Set: 20:20, Transit: 13:04. Moon - Rise: 13:17, Set: 04:02. Civil Dark: 20:57 - 05:10. Nautical Dark: 21:44 - 04:22. Astro Dark: 22:40 - 03:25

Total Clouds (% Sky Obscured)

41
21
0
17
33
48
43
35
31
28
27
28
14
5
0
0
0
0
11
21
32
33
33
32

Low Clouds (% Sky Obscured)

39
19
0
12
22
30
24
23
22
25
27
28
14
5
0
0
0
0
11
21
32
31
28
26

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
1
1
1

High Clouds (% Sky Obscured)

2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
4

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)

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

Chance of Frost

Temperature (°C)

2
5
8
10
11
13
14
14
14
14
13
13
12
10
8
6
5
4
3
2
2
1
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
75
66
60
58
56
53
54
55
56
61
66
73
80
85
93
94
96
96
96
96
94
96
94

Pressure (mb)

1025
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1024
1025
1026
1026
1027
1027
1028
1028
1028
1028
1028

Ozone (du)

364
366
368
369
370
372
373
373
374
374
377
380
382
383
384
386
387
388
389
389
389
389
387
385

Sunday 26

Waxing Gibbous 78%

14:37

04:14

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

Sun - Rise: 05:45, Set: 20:22, Transit: 13:04. Moon - Rise: 14:37, Set: 04:14. Civil Dark: 20:59 - 05:07. Nautical Dark: 21:46 - 04:19. Astro Dark: 22:43 - 03:22

Total Clouds (% Sky Obscured)

36
40
42
42
42
45
33
26
17
27
34
47
54
65
76
82
87
93

Low Clouds (% Sky Obscured)

32
38
42
42
42
45
33
26
17
27
22
15
10
5
5
5
3
0

Medium Clouds (% Sky Obscured)

2
2
4
6
5
5
6
7
8
11
13
13
17
20
23
19
25
23

High Clouds (% Sky Obscured)

4
3
1
1
2
2
31
26
17
27
34
47
54
65
76
80
67
56

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
7
9
11
11
10
10
10
11
11
11
10
11
10
10
9
8
8

Chance of Frost

Temperature (°C)

1
3
6
8
9
10
11
12
12
12
11
11
10
8
7
5
4
3

Feels Like (°C)

-1
0
1
2
2
3
3
9
9
9
9
9
10
6
5
5
4
3

Dew Point (°C)

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

Relative Humidity (%)

94
86
76
70
65
62
58
59
60
60
64
68
73
75
78
80
85
91

Pressure (mb)

1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1027
1027

Ozone (du)

383
382
381
381
379
378
377
378
379
380
379
378
377
377
377
377
380
382

Forecast for Marlborough, Wiltshire, United Kingdom (51.42,-1.73)

Generated: 20/04/26 07:10:37. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+1.00