Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 20%

01:10

18:10

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

Sun - Rise: 06:56, Set: 19:25, Transit: 13:10. Moon - Rise: 01:10, Set: 18:10. Civil Dark: 19:59 - 06:22. Nautical Dark: 20:39 - 05:42. Astro Dark: 21:21 - 05:00

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
98
99
100
100
100
100
100
100
98
100
100
100
98
100
99
100
98
100

Low Clouds (% Sky Obscured)

80
79
92
100
100
91
88
94
100
100
100
100
100
100
92
100
96
100
97
100
99
100
93
100

Medium Clouds (% Sky Obscured)

100
100
100
100
92
96
53
98
100
79
56
57
51
58
65
71
70
64
68
73
96
87
94
97

High Clouds (% Sky Obscured)

100
100
72
88
43
50
3
0
0
0
0
0
0
0
0
0
5
1
0
20
2
65
9
56

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
95
95
95
95
54
95
82
81
59
33
39
54
40
45
49
29
43
30
56
46
58
71

Precipitation Amount (mm)

0.5
0.5
1.3
4
1.8
0.6
0
0.6
0.4
0.4
0
0
0
0.2
0
0
0.2
0
0
0
0.4
0
0.3
0.6

Wind Speed/Direction (mph)

10
11
14
15
20
20
23
26
25
24
23
22
21
20
20
19
19
18
17
16
16
14
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
93
93
93
95
95
95
95
95
95
96
96
96
98
98
96
98
98
98
98
98
98
98
95

Pressure (mb)

1018
1017
1016
1015
1014
1013
1012
1012
1012
1012
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1016

Ozone (du)

260
259
259
258
257
259
259
258
257
257
258
261
262
266
266
266
265
263
261
260
260
259
261
263

Wednesday 17

Waning Crescent 12%

02:34

18:28

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

Sun - Rise: 06:57, Set: 19:23, Transit: 13:10. Moon - Rise: 02:34, Set: 18:28. Civil Dark: 19:56 - 06:24. Nautical Dark: 20:36 - 05:44. Astro Dark: 21:18 - 05:02

Total Clouds (% Sky Obscured)

100
97
96
98
99
98
98
94
92
100
89
89
91
100
96
100
100
100
92
77
100
98
74
98

Low Clouds (% Sky Obscured)

98
96
90
89
83
95
95
87
84
100
78
81
82
85
83
86
88
85
81
58
56
65
71
71

Medium Clouds (% Sky Obscured)

69
59
73
48
77
42
41
31
34
29
9
22
9
30
25
25
30
41
4
3
2
0
2
2

High Clouds (% Sky Obscured)

20
68
15
25
2
20
44
38
60
60
47
39
55
100
52
100
100
89
20
35
100
96
49
93

ISS Passover

Visibility (miles)

1
2
2
2
3
7
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
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 (%)

58
41
42
40
43
35
21
20
31
10
5
3
2
4
7
3
3
4
5
6
1
0
1
1

Precipitation Amount (mm)

0.4
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
11
10
10
14
17
17
18
18
18
18
18
19
18
18
18
17
17
16
14
13
13
13
12

Chance of Frost

Temperature (°C)

16
16
16
16
17
17
17
17
17
17
17
17
17
18
18
18
18
18
17
17
17
17
16
17

Feels Like (°C)

14
15
16
16
15
14
14
13
14
14
14
14
14
15
15
15
15
15
15
15
15
15
14
16

Dew Point (°C)

15
15
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16

Relative Humidity (%)

93
95
96
98
98
98
96
95
95
93
93
92
93
92
90
90
90
92
93
92
93
93
95
95

Pressure (mb)

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

Ozone (du)

262
263
262
262
262
263
262
261
261
260
260
260
259
260
261
260
259
258
258
258
256
256
256
255

Thursday 18

Waning Crescent 6%

03:56

18:42

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

Sun - Rise: 06:59, Set: 19:21, Transit: 13:10. Moon - Rise: 03:56, Set: 18:42. Civil Dark: 19:54 - 06:25. Nautical Dark: 20:34 - 05:46. Astro Dark: 21:15 - 05:04

Total Clouds (% Sky Obscured)

96
51
66
70
75
68
79
84
95
94
89
84
80
66
63
58
49
65
93
94
96
98
100
100

Low Clouds (% Sky Obscured)

52
48
66
70
67
66
64
71
83
89
77
77
59
44
45
58
49
52
61
61
64
71
80
85

Medium Clouds (% Sky Obscured)

3
6
5
2
24
2
4
0
2
4
3
4
4
3
10
1
2
13
33
36
53
72
51
78

High Clouds (% Sky Obscured)

91
20
2
21
18
21
52
41
33
44
37
31
45
45
35
36
11
35
82
70
78
88
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
1
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
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
2
3
3
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
16
16
15
15
15
15
15
15
15
15
15
16
15
15
15
15
15
16
15
15
15
15

Relative Humidity (%)

95
95
95
95
95
95
95
95
95
96
92
89
86
85
80
80
77
81
85
89
92
93
95
95

Pressure (mb)

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

Ozone (du)

256
256
256
256
257
258
259
259
260
260
260
261
261
260
260
261
264
265
266
265
265
265
265
265

Friday 19

Waning Crescent 2%

05:14

18:53

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

Sun - Rise: 07:00, Set: 19:18, Transit: 13:09. Moon - Rise: 05:14, Set: 18:53. Civil Dark: 19:52 - 06:27. Nautical Dark: 20:31 - 05:47. Astro Dark: 21:13 - 05:06

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
68
95
83
70
56
62

Low Clouds (% Sky Obscured)

88
88
86
84
85
87
89
92
93
94
95
94
92
90
94
97
100
72
35
15
24
33
42
49

Medium Clouds (% Sky Obscured)

80
84
77
87
85
89
89
88
69
95
100
100
100
100
86
52
96
39
33
31
22
13
4
3

High Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
98
91
100
91
67
100
52
43
74
41
20
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
1
1
2
4
9
9
9
3
2
9
5
9
7
5
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
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
None
None

Precipitation Probability (%)

22
10
16
14
38
53
45
26
95
95
95
89
81
91
95
95
95
95
95
95
83
66
37
28

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
1.1
1
1.1
0.6
0.5
0.5
0.8
0.8
0.6
1.3
0.7
0.8
0.5
0.3
0
0

Wind Speed/Direction (mph)

7
6
5
6
4
4
3
3
3
4
4
5
6
6
8
8
9
6
15
14
15
12
10
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
16
16
15
15
15
15
14
15
14
14
14
14
15
16
16
16
16
8
6
6
7
8
6

Dew Point (°C)

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

Relative Humidity (%)

96
95
93
92
90
92
96
96
95
96
96
96
96
95
96
95
95
96
96
90
88
88
90
87

Pressure (mb)

1015
1014
1014
1014
1013
1013
1012
1012
1011
1011
1010
1010
1009
1009
1008
1007
1006
1005
1006
1007
1008
1009
1009
1010

Ozone (du)

268
271
270
271
272
270
270
268
269
268
269
269
271
274
278
280
284
290
294
297
300
304
306
309

Saturday 20

Waning Crescent 0%

06:29

19:03

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 OK
22 OK

Sun - Rise: 07:02, Set: 19:16, Transit: 13:09. Moon - Rise: 06:29, Set: 19:03. Civil Dark: 19:49 - 06:29. Nautical Dark: 20:29 - 05:49. Astro Dark: 21:10 - 05:08

Total Clouds (% Sky Obscured)

43
72
79
76
40
74
77
79
80
82
85
89
93
98
98
97
97
97
97
98
74
50
27
26

Low Clouds (% Sky Obscured)

43
67
67
63
40
58
57
59
59
57
60
66
72
77
70
60
54
60
67
76
53
29
6
7

Medium Clouds (% Sky Obscured)

2
2
0
0
2
7
18
25
31
34
43
79
87
94
93
93
91
90
95
98
66
37
11
15

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
5
1
1
7
2
3
3
2
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
6
9
9
9
9
9
9
9
9
9
9
6
7
8
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
Very Light Rain
None
Very Light Rain
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

32
34
44
44
51
41
36
47
44
38
20
28
26
27
40
39
37
34
31
26
21
15
4
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
84
90
87
90
87
87
84
81
81
80
81
74
74
71
71
69
70
71
72
72
72
71

Pressure (mb)

1010
1010
1010
1010
1010
1010
1011
1012
1013
1014
1015
1016
1017
1018
1018
1019
1020
1020
1021
1022
1022
1023
1024
1025

Ozone (du)

311
315
318
321
320
320
320
320
319
320
320
320
320
320
320
321
322
323
323
323
324
324
324
324

Sunday 21

New Moon 1%

07:42

19:13

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

Sun - Rise: 07:04, Set: 19:14, Transit: 13:09. Moon - Rise: 07:42, Set: 19:13. Civil Dark: 19:47 - 06:30. Nautical Dark: 20:26 - 05:51. Astro Dark: 21:08 - 05:10

Total Clouds (% Sky Obscured)

26
25
20
18
12
8
7
4
4
3
3
9
18
32
33
38
40
37
35
35
24
12
1
3

Low Clouds (% Sky Obscured)

8
9
6
4
1
1
0
0
0
0
0
9
18
32
33
38
39
36
33
29
20
10
1
3

Medium Clouds (% Sky Obscured)

19
25
20
18
12
8
7
3
2
1
0
0
0
0
1
1
2
4
4
5
3
1
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
1
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 (%)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
4
5
5
5
5
5
4
5
5
6
6
7
12
11
11
11
11
11
7
7
7

Dew Point (°C)

3
3
3
3
3
3
3
3
3
3
4
4
4
3
3
4
4
4
5
5
5
5
4
4

Relative Humidity (%)

73
74
75
76
78
82
81
80
82
75
70
65
60
55
52
53
53
53
58
64
71
72
74
77

Pressure (mb)

1025
1025
1026
1026
1026
1027
1027
1027
1028
1028
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1030
1030

Ozone (du)

325
326
327
326
324
323
321
319
317
315
314
312
311
311
310
309
308
307
306
306
305
305
305
305

Monday 22

Waxing Crescent 3%

08:55

19:24

23 Good
00 Good
01 Good
02 OK
03 OK
04 OK
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

Sun - Rise: 07:05, Set: 19:11, Transit: 13:08. Moon - Rise: 08:55, Set: 19:24. Civil Dark: 19:45 - 06:32. Nautical Dark: 20:24 - 05:53. Astro Dark: 21:05 - 05:12

Total Clouds (% Sky Obscured)

5
7
13
19
25
36
47
58
61
64
70
78
80
81
88
93
100
98
98
97

Low Clouds (% Sky Obscured)

5
6
11
16
21
26
33
37
35
34
28
24
25
23
44
64
83
81
82
81

Medium Clouds (% Sky Obscured)

0
0
1
1
2
8
17
24
42
58
70
68
68
70
72
69
62
51
36
24

High Clouds (% Sky Obscured)

0
0
0
0
0
7
13
18
12
7
2
18
36
67
57
39
19
13
7
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7

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

Precipitation Probability (%)

2
0
0
0
0
0
0
0
0
0
0
1
2
3
23
33
43
58
61
57

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
6
4
4
4
3
3
3
4
5
5
6
7
7
11
11
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

75
74
72
74
74
75
75
76
76
74
70
67
66
64
63
64
67
69
73
79

Pressure (mb)

1030
1030
1029
1029
1029
1028
1028
1028
1027
1027
1027
1026
1026
1025
1025
1024
1023
1023
1023
1022

Ozone (du)

305
304
304
304
304
303
303
302
302
301
301
301
301
301
302
302
303
304
304
305

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

Generated: 16/09/25 23:48:47. Forecast: 16/09/25 to 22/09/25. Timezone: UTC+1.00