Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 7

Waning Crescent 18%

02:45

18:27

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
04 Bad

Sun - Rise: 06:39, Set: 19:49, Transit: 13:14. Moon - Rise: 02:45, Set: 18:27. Civil Dark: 20:23 - 06:05. Nautical Dark: 21:05 - 05:23. Astro Dark: 21:50 - 04:41

Total Clouds (% Sky Obscured)

100
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

78
81
88
75
45
53
30
70
61
78
80
35
36
49
75
61
57
60
72
61
68
72
73
82

Medium Clouds (% Sky Obscured)

4
1
0
0
0
7
98
96
90
88
97
99
100
100
99
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

68
97
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
76
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
3
3
4
4
2
3

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

14
14
17
8
3
3
1
1
0
3
8
13
4
22
44
77
93
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
1.5
1.6
1
0.8
1.2
1.3
2.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
90
87
82
74
66
61
62
65
65
70
74
76
78
78
80
83
87
90
90
92
92
92

Pressure (mb)

1015
1016
1016
1017
1018
1018
1018
1018
1019
1019
1018
1017
1017
1016
1016
1016
1015
1015
1014
1013
1013
1012
1011
1010

Ozone (du)

303
302
302
302
300
299
300
300
300
300
301
301
301
300
299
300
300
299
298
298
298
300
302
304

Tuesday 8

Waning Crescent 9%

04:15

18:50

05 Bad
06 Bad
07 Bad
08 Bad
09 OK
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 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:41, Set: 19:47, Transit: 13:14. Moon - Rise: 04:15, Set: 18:50. Civil Dark: 20:21 - 06:07. Nautical Dark: 21:02 - 05:25. Astro Dark: 21:47 - 04:43

Total Clouds (% Sky Obscured)

100
100
99
52
41
48
42
45
45
52
65
65
59
41
36
8
40
35
24
43
46
44
47
52

Low Clouds (% Sky Obscured)

81
40
58
40
30
43
40
45
45
52
64
31
46
40
29
8
18
18
22
39
43
44
47
50

Medium Clouds (% Sky Obscured)

100
100
99
52
41
48
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
40
45
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)

2
2
2
5
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

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
None
None
None

Precipitation Probability (%)

95
95
95
52
10
18
21
7
3
11
18
12
12
19
21
25
12
9
7
4
5
6
7
22

Precipitation Amount (mm)

1.8
1.9
0.9
0.3
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
11
9
7
9
12
16
16
17
18
17
17
17
16
15
13
12
13
14
14
13
12
12
11

Chance of Frost

Temperature (°C)

14
14
13
13
13
14
15
16
16
16
17
16
16
16
15
14
14
14
14
13
12
12
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
90
92
86
80
73
61
56
55
58
62
63
66
70
71
71
74
75
77
79
80
74
72

Pressure (mb)

1010
1009
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1011
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1016

Ozone (du)

306
308
313
320
326
351
337
336
340
341
343
344
344
344
344
343
343
342
341
342
340
339
339
339

Wednesday 9

Waning Crescent 4%

No Rise

19:06

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

Sun - Rise: 06:42, Set: 19:44, Transit: 13:13. Moon - Rise: No Rise, Set: 19:06. Civil Dark: 20:18 - 06:08. Nautical Dark: 21:00 - 05:27. Astro Dark: 21:44 - 04:45

Total Clouds (% Sky Obscured)

46
40
45
41
59
54
58
57
56
50
53
1
12
82
100
100
100
100
100
100
97
95
93
91

Low Clouds (% Sky Obscured)

43
40
45
41
59
54
58
57
56
50
53
0
12
29
37
43
0
21
48
80
82
78
75
73

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
5
56
95
93
91

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
2
82
100
100
100
100
100
100
75
50
25
30

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 (%)

22
9
22
5
20
19
4
18
0
0
0
1
1
2
5
2
2
1
1
8
6
9
27
39

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
9
8
10
11
11
11
13
14
14
15
15
14
13
13
10
9
10
10
10
10
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

77
80
81
80
79
74
67
62
59
58
56
59
63
66
70
77
79
80
80
80
80
77
80
80

Pressure (mb)

1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1020
1019
1020
1020
1020
1020
1019
1019
1019
1019
1019

Ozone (du)

337
335
335
335
333
333
333
334
332
328
322
320
318
315
311
307
305
305
304
303
301
301
301
302

Thursday 10

Waning Crescent 1%

05:41

19:20

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
04 Bad

Sun - Rise: 06:44, Set: 19:42, Transit: 13:13. Moon - Rise: 05:41, Set: 19:20. Civil Dark: 20:16 - 06:10. Nautical Dark: 20:57 - 05:29. Astro Dark: 21:41 - 04:47

Total Clouds (% Sky Obscured)

90
90
90
91
92
85
90
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
98
96

Low Clouds (% Sky Obscured)

71
69
65
62
61
61
64
60
70
80
85
89
95
100
100
100
100
100
100
100
96
92
87
85

Medium Clouds (% Sky Obscured)

90
90
90
72
92
3
3
2
3
4
5
5
5
5
10
20
66
54
25
10
9
4
16
0

High Clouds (% Sky Obscured)

35
30
3
6
9
26
48
100
100
100
100
98
100
96
62
68
61
59
65
16
17
10
10
10

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

24
18
7
20
11
33
40
21
12
19
7
11
7
7
14
25
38
45
57
64
67
80
85
70

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.3
0.6
0.7
0.4

Wind Speed/Direction (mph)

6
7
6
7
7
11
15
15
16
16
15
16
16
15
15
15
15
15
15
15
15
14
13
10

Chance of Frost

Temperature (°C)

12
12
12
13
15
17
17
17
18
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

83
81
80
79
78
77
78
73
71
74
77
77
82
85
82
86
87
89
90
92
93
96
90
92

Pressure (mb)

1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1019
1019
1019
1018
1018
1018
1018
1017
1017

Ozone (du)

302
306
310
311
310
309
305
302
299
297
295
293
292
290
290
289
290
290
291
292
292
292
293
294

Friday 11

New Moon 0%

07:04

19:32

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

Sun - Rise: 06:46, Set: 19:40, Transit: 13:13. Moon - Rise: 07:04, Set: 19:32. Civil Dark: 20:14 - 06:12. Nautical Dark: 20:54 - 05:31. Astro Dark: 21:38 - 04:49

Total Clouds (% Sky Obscured)

93
86
59
49
36
52
57
63
36
18
0
13
24
35
23
18
13
30
46
62
68
74
80
80

Low Clouds (% Sky Obscured)

81
74
57
45
31
40
47
56
36
17
0
10
16
18
23
15
2
10
15
19
16
13
13
17

Medium Clouds (% Sky Obscured)

3
3
2
1
0
0
0
5
0
0
0
0
0
0
0
0
0
0
0
0
0
1
3
6

High Clouds (% Sky Obscured)

6
3
4
4
8
43
37
30
0
0
0
0
0
1
7
10
13
27
40
53
59
66
72
70

ISS Passover

Visibility (miles)

4
9
6
6
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 (%)

53
39
35
32
9
9
7
14
4
1
2
1
1
0
1
2
0
1
1
0
0
1
0
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
17
20
20
20
18
19
21
20
20
20
21
19
18
16
16
15
15
14
14
11
11
12

Dew Point (°C)

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

Relative Humidity (%)

92
90
92
93
88
82
78
72
67
62
62
64
65
68
77
80
83
86
86
86
84
84
84
84

Pressure (mb)

1017
1018
1018
1019
1019
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

296
298
300
303
307
314
316
316
316
315
316
314
311
306
303
302
300
299
298
297
295
294
292
290

Saturday 12

Waxing Crescent 2%

08:25

19:44

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
04 Bad

Sun - Rise: 06:47, Set: 19:37, Transit: 13:12. Moon - Rise: 08:25, Set: 19:44. Civil Dark: 20:11 - 06:13. Nautical Dark: 20:52 - 05:33. Astro Dark: 21:35 - 04:51

Total Clouds (% Sky Obscured)

78
74
82
91
99
96
93
90
93
97
100
100
100
100
99
98
97
98
99
99
97
95
93
95

Low Clouds (% Sky Obscured)

21
25
39
55
71
75
79
83
89
94
100
100
100
99
97
95
92
94
96
98
97
95
93
81

Medium Clouds (% Sky Obscured)

10
13
9
6
3
5
7
9
10
15
16
31
46
59
44
28
13
9
7
3
3
1
0
12

High Clouds (% Sky Obscured)

66
63
74
85
97
75
53
32
56
75
96
98
99
100
80
57
30
43
61
80
65
49
32
51

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

6
1
3
0
0
4
10
12
24
31
36
37
41
41
34
34
32
35
44
50
50
55
52
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3
0

Wind Speed/Direction (mph)

3
4
6
8
10
11
12
14
15
15
15
15
15
15
15
14
14
15
13
13
12
11
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

12
11
12
14
14
14
15
14
15
15
16
15
15
15
14
15
15
16
16
16
16
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

86
84
86
84
83
82
82
82
81
85
89
93
93
95
96
96
98
98
98
98
98
98
96
96

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
1019
1019
1019
1018

Ozone (du)

290
290
290
291
291
292
292
292
292
293
294
295
296
298
299
301
303
304
304
303
303
301
299
297

Sunday 13

Waxing Crescent 7%

09:44

19:57

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: 06:49, Set: 19:35, Transit: 13:12. Moon - Rise: 09:44, Set: 19:57. Civil Dark: 20:09 - 06:15. Nautical Dark: 20:49 - 05:34. Astro Dark: 21:33 - 04:53

Total Clouds (% Sky Obscured)

98
99
99
98
98
90
83
76
81
79
71
80
90
99
95
92
89
90
92
94

Low Clouds (% Sky Obscured)

62
44
32
24
17
23
25
21
21
17
18
18
21
23
19
14
9
10
11
12

Medium Clouds (% Sky Obscured)

24
37
29
21
9
10
11
12
29
46
60
44
24
5
6
6
7
6
5
4

High Clouds (% Sky Obscured)

69
88
92
95
98
90
83
76
65
39
13
43
70
95
82
69
56
46
35
28

ISS Passover

Visibility (miles)

8
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

Precipitation Type

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

Precipitation Probability (%)

32
25
22
29
36
52
71
95
93
82
62
37
27
18
15
13
6
10
12
12

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.7
0.6
0.5
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

17
17
16
16
16
16
16
16
16
15
15
15
15
15
15
15
15
15
15
16

Relative Humidity (%)

96
95
92
90
88
86
85
84
81
80
77
76
80
85
89
90
93
95
96
95

Pressure (mb)

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

Ozone (du)

296
295
294
293
291
290
287
285
283
282
281
280
280
280
279
280
280
281
281
281

Forecast for Llanrhidian, City and County of Swansea, United Kingdom (51.61,-4.17)

Generated: 07/09/26 05:51:20. Forecast: 07/09/26 to 13/09/26. Timezone: UTC+1.00