Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 5%

05:42

00:15

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: 05:15, Set: 21:10, Transit: 13:12. Moon - Rise: 05:42, Set: 00:15. Civil Dark: 21:54 - 04:31. Nautical Dark: 22:56 - 03:26. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
96
77
75
98
97
95
90
99
100
100
99
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

56
83
81
61
66
60
60
45
5
31
55
99
79
87
75
69
100
81
88
81
84
91
100
89

Medium Clouds (% Sky Obscured)

97
69
26
17
22
42
46
66
41
56
95
50
75
99
100
100
95
100
100
100
100
99
72
86

High Clouds (% Sky Obscured)

0
0
7
49
56
77
81
47
49
96
93
96
42
43
30
40
22
46
100
100
100
78
93
97

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

71
58
57
45
45
31
30
29
34
50
60
65
67
65
57
57
83
95
95
95
95
95
94
95

Precipitation Amount (mm)

0.4
0
0.3
0.2
0.3
0
0
0
0
0.3
0.4
0.5
0.5
0.4
0.3
0
0.4
0.6
0.9
1.1
0.8
0.4
0.4
0.8

Wind Speed/Direction (mph)

6
7
5
5
5
6
7
7
7
7
8
10
14
13
14
13
11
14
15
16
18
19
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
88
88
88
82
81
78
75
71
73
80
83
81
83
84
88
88
90
91
90
90
90
90
90

Pressure (mb)

1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1008
1007
1007
1006
1005
1004
1003
1002
1002

Ozone (du)

418
411
407
400
397
395
396
394
391
389
387
385
380
378
378
379
379
377
378
380
385
390
399
393

Tuesday 19

Waxing Crescent 12%

06:48

01:08

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: 05:13, Set: 21:12, Transit: 13:12. Moon - Rise: 06:48, Set: 01:08. Civil Dark: 21:56 - 04:29. Nautical Dark: 22:58 - 03:24. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

94
100
96
99
100
100
91
99
99
82
72
85
90
95
99
99
100
100
99
100
100
94
94
98

Low Clouds (% Sky Obscured)

75
72
69
86
85
92
68
65
60
65
58
65
67
69
83
75
60
98
71
82
92
86
83
89

Medium Clouds (% Sky Obscured)

74
62
28
80
45
100
87
97
95
60
36
49
77
74
98
97
99
100
91
99
91
48
53
81

High Clouds (% Sky Obscured)

30
66
11
43
51
76
2
5
40
2
3
4
6
16
52
46
90
27
3
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
72
57
39
71
95
95
93
86
78
72
71
77
75
67
60
75
78
83
69
71
52
44
57

Precipitation Amount (mm)

0.9
0.4
0.3
0
0.4
1.2
0.9
0.7
0.7
0.5
0.4
0.4
0.5
0.5
0.4
0.3
0.5
0.5
0.7
0.3
0.4
0.3
0
0

Wind Speed/Direction (mph)

14
14
12
13
14
14
16
17
18
19
20
20
21
21
22
22
21
20
20
20
21
20
20
18

Chance of Frost

Temperature (°C)

12
12
12
13
13
12
12
13
13
13
14
14
13
13
13
12
12
11
11
12
12
12
11
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
95
98
92
90
93
95
95
92
89
83
86
87
89
92
93
92
93
90
90
92
92
93
95

Pressure (mb)

1001
1001
1001
1001
1002
1002
1002
1002
1002
1003
1003
1004
1004
1004
1005
1006
1006
1007
1007
1007
1008
1008
1009
1009

Ozone (du)

390
391
392
393
392
389
388
391
393
393
394
396
396
397
400
401
398
400
398
397
391
387
383
381

Wednesday 20

Waxing Crescent 21%

08:11

01:42

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

Sun - Rise: 05:12, Set: 21:13, Transit: 13:12. Moon - Rise: 08:11, Set: 01:42. Civil Dark: 21:57 - 04:27. Nautical Dark: 23:01 - 03:22. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

92
90
88
86
91
94
94
92
98
97
69
37
22
15
9
6
14
33
28
100
100
100
100
100

Low Clouds (% Sky Obscured)

81
81
86
65
76
81
47
74
87
85
69
37
19
15
9
6
14
33
28
99
98
98
99
100

Medium Clouds (% Sky Obscured)

43
45
47
48
14
28
52
51
72
41
2
13
22
15
9
6
14
33
28
72
98
77
97
87

High Clouds (% Sky Obscured)

0
0
0
0
3
23
34
3
3
4
10
6
7
1
2
0
0
29
15
62
56
69
79
100

ISS Passover

Visibility (miles)

9
4
4
7
9
7
7
7
9
9
9
9
9
9
9
9
9
9
9
9
7
4
3
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

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

Precipitation Probability (%)

57
49
37
26
25
24
23
22
24
16
21
9
8
5
14
1
4
1
24
60
73
87
71
34

Precipitation Amount (mm)

0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.5
0.9
0.5
0

Wind Speed/Direction (mph)

17
15
20
20
18
21
20
19
20
20
19
21
20
18
16
15
12
9
10
9
9
10
9
9

Chance of Frost

Temperature (°C)

12
11
12
12
12
13
13
13
14
14
14
15
15
15
15
15
14
13
12
12
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
12
12
12
13
13
12
12
12
12
12
12
12
12
12
11
11
11
12
12
13

Relative Humidity (%)

95
98
96
95
95
95
95
95
93
89
84
82
82
80
82
86
87
93
93
93
90
92
93
96

Pressure (mb)

1010
1010
1011
1012
1013
1014
1015
1016
1016
1017
1018
1019
1019
1020
1020
1020
1021
1021
1022
1022
1022
1022
1022
1022

Ozone (du)

378
380
373
367
362
358
356
355
352
349
351
349
347
348
349
348
348
348
350
350
350
350
349
349

Thursday 21

Waxing Crescent 31%

09:41

02:05

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 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 05:10, Set: 21:14, Transit: 13:12. Moon - Rise: 09:41, Set: 02:05. Civil Dark: 21:59 - 04:26. Nautical Dark: 23:03 - 03:19. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
99
98
97
82
86
86
98
100
100
100
100
100
100
100
100
98
59
38
86
94
95
95
96

Low Clouds (% Sky Obscured)

95
87
85
84
73
69
68
68
62
34
15
0
3
4
8
4
2
1
2
9
20
20
20
25

Medium Clouds (% Sky Obscured)

78
43
35
44
37
55
21
59
44
53
41
77
73
64
77
89
81
59
38
50
82
81
65
85

High Clouds (% Sky Obscured)

70
37
4
6
5
7
40
53
100
100
100
100
99
99
98
96
88
34
32
45
44
51
64
75

ISS Passover

Visibility (miles)

7
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 (%)

15
14
19
12
5
0
3
9
1
5
5
2
3
3
0
0
0
0
6
8
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
8
7
6
7
8
10
10
10
10
10
9
9
7
5
3
3
3
5
5
5
6
6
7

Chance of Frost

Temperature (°C)

14
14
14
14
15
15
16
17
17
18
18
19
19
19
19
18
17
16
15
15
15
16
16
16

Feels Like (°C)

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

Dew Point (°C)

13
13
13
13
14
14
14
14
14
13
13
13
13
14
14
15
15
14
13
13
12
11
9
9

Relative Humidity (%)

95
95
93
95
93
90
86
83
81
76
73
70
71
73
75
81
85
89
87
86
80
70
64
62

Pressure (mb)

1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1022
1022

Ozone (du)

349
348
348
346
343
342
340
339
338
337
337
337
338
340
340
342
348
350
349
348
347
346
345
344

Friday 22

Waxing Crescent 42%

11:10

02:20

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: 05:09, Set: 21:16, Transit: 13:13. Moon - Rise: 11:10, Set: 02:20. Civil Dark: 22:01 - 04:24. Nautical Dark: 23:06 - 03:17. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
58
100
81
100
74
100
100
100
100
100
100
100
100
100
98
97
95
95
95
97
96
99
99

Low Clouds (% Sky Obscured)

5
0
0
5
10
16
12
6
0
3
5
10
26
43
60
67
79
86
81
81
80
77
76
80

Medium Clouds (% Sky Obscured)

22
23
23
19
17
19
27
29
32
40
45
89
75
56
51
42
54
66
64
62
58
64
66
84

High Clouds (% Sky Obscured)

82
55
100
81
100
74
100
100
100
100
100
100
100
100
100
83
65
42
27
22
14
14
19
24

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
3
16
33
35
44
48
32
15
12
20
28
36

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

Chance of Frost

Temperature (°C)

16
16
15
17
18
19
20
20
21
22
22
22
22
21
20
18
18
17
16
16
16
15
15
15

Feels Like (°C)

14
13
14
16
18
17
20
19
20
20
21
22
23
21
20
19
19
18
18
17
17
17
16
15

Dew Point (°C)

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

Relative Humidity (%)

63
73
80
83
76
73
72
74
73
73
73
74
74
73
77
85
86
88
89
89
90
89
92
92

Pressure (mb)

1022
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021
1020
1020
1020
1020
1021
1021
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

344
343
344
344
345
345
345
343
343
342
341
339
338
338
338
338
338
337
337
338
339
340
342
343

Saturday 23

First Quarter 54%

12:34

02:33

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

Sun - Rise: 05:08, Set: 21:17, Transit: 13:13. Moon - Rise: 12:34, Set: 02:33. Civil Dark: 22:02 - 04:23. Nautical Dark: 23:08 - 03:15. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
99
100
99
99
92
94
96
98
99
99
100
75
48
23
16
9
2
0
0
0
1
3
4

Low Clouds (% Sky Obscured)

86
90
95
90
91
89
69
50
30
26
20
15
11
10
8
7
7
2
0
0
0
1
3
4

Medium Clouds (% Sky Obscured)

89
90
85
85
70
60
41
18
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

29
28
22
28
26
25
40
58
79
85
93
100
68
36
4
6
8
2
0
0
0
1
1
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
5
3
4
4
4
6
8
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 (%)

38
33
17
16
14
10
6
7
2
16
7
1
11
5
1
1
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)

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

Chance of Frost

Temperature (°C)

15
15
15
15
16
17
17
18
18
18
18
18
18
18
17
17
16
15
14
14
14
14
14
13

Feels Like (°C)

15
15
16
16
16
17
17
17
18
18
19
19
18
18
18
18
18
18
19
18
17
17
16
15

Dew Point (°C)

14
14
14
14
14
14
14
15
15
15
15
15
15
15
14
14
14
13
13
12
12
13
13
12

Relative Humidity (%)

92
93
93
93
89
85
81
81
82
82
82
82
82
82
83
85
87
89
92
92
92
93
93
93

Pressure (mb)

1023
1024
1024
1025
1025
1026
1026
1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1030

Ozone (du)

345
346
347
348
350
352
355
352
350
348
346
345
343
343
343
343
341
339
338
338
337
337
336
335

Sunday 24

Waxing Gibbous 64%

13:53

02:43

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

Sun - Rise: 05:07, Set: 21:19, Transit: 13:13. Moon - Rise: 13:53, Set: 02:43. Civil Dark: 22:04 - 04:21. Nautical Dark: 23:11 - 03:13. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

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

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

High Clouds (% Sky Obscured)

3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
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

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
0
0
0
4
2
1
9
17
15
13
12
11
9
5
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)

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

Chance of Frost

Temperature (°C)

13
13
14
14
15
15
16
16
16
17
16
16
17
17
17
18
17
16
16
15
15

Feels Like (°C)

15
15
15
14
15
15
14
14
14
14
19
20
21
20
20
20
20
21
21
20
20

Dew Point (°C)

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

Relative Humidity (%)

92
90
87
87
80
75
69
67
65
63
66
69
74
74
76
76
79
83
87
87
89

Pressure (mb)

1030
1031
1031
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1031
1031
1031
1031
1031
1032
1031
1031

Ozone (du)

334
334
334
335
335
335
335
334
333
332
331
330
329
329
329
329
328
327
326
325
325

Forecast for Aberystwyth, Ceredigion, United Kingdom (52.42,-4.08)

Generated: 18/05/26 04:27:57. Forecast: 18/05/26 to 24/05/26. Timezone: UTC+1.00