Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Gibbous 53%

21:26

15:44

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

Sun - Rise: 06:30, Set: 19:13, Transit: 12:50. Moon - Rise: 21:26, Set: 15:44. Civil Dark: 19:47 - 05:56. Nautical Dark: 20:27 - 05:16. Astro Dark: 21:10 - 04:34

Total Clouds (% Sky Obscured)

32
34
28
0
0
0
44
20
2
0
0
0
0
6
12
26
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

32
32
28
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
28
37
42
47
78

Medium Clouds (% Sky Obscured)

3
0
0
0
0
0
23
20
2
0
0
0
0
0
0
0
0
28
100
100
100
100
94
89

High Clouds (% Sky Obscured)

1
0
0
0
0
0
29
2
2
0
0
0
0
3
12
26
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

7
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
Very Light Rain

Precipitation Probability (%)

25
6
4
5
8
9
11
9
3
1
1
0
0
0
0
0
0
1
1
1
1
9
22
68

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
0.3

Wind Speed/Direction (mph)

13
14
13
12
10
10
9
8
8
7
7
7
7
6
6
6
5
7
8
12
15
16
15
14

Chance of Frost

Temperature (°C)

17
17
16
15
14
13
12
12
11
11
10
10
10
10
9
9
11
13
15
16
17
17
16
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
66
67
70
76
77
81
83
83
87
91
93
93
93
95
91
81
70
66
59
55
57
66
73

Pressure (mb)

1009
1008
1008
1009
1010
1011
1011
1012
1012
1012
1013
1013
1013
1014
1014
1014
1015
1015
1014
1013
1013
1012
1011
1010

Ozone (du)

315
316
315
314
315
314
316
316
316
315
309
299
292
289
284
282
277
273
271
268
265
262
264
265

Sunday 14

Third Quarter 41%

22:19

No Set

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

Sun - Rise: 06:31, Set: 19:11, Transit: 12:50. Moon - Rise: 22:19, Set: No Set. Civil Dark: 19:44 - 05:58. Nautical Dark: 20:24 - 05:18. Astro Dark: 21:07 - 04:36

Total Clouds (% Sky Obscured)

100
100
100
99
96
90
63
72
59
35
48
59
40
41
37
32
47
61
32
61
64
59
55
47

Low Clouds (% Sky Obscured)

88
100
80
75
90
78
53
67
49
35
44
45
40
41
37
32
47
61
32
57
64
54
55
47

Medium Clouds (% Sky Obscured)

64
45
41
31
39
36
1
0
2
0
0
11
0
0
0
0
0
0
0
26
9
14
0
1

High Clouds (% Sky Obscured)

77
96
92
79
38
5
25
24
20
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0

ISS Passover

Visibility (miles)

9
9
9
6
1
9
5
4
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
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
89
95
61
58
63
57
52
17
3
10
14
12
8
5
5
6
6
20
16
16
23
33
35

Precipitation Amount (mm)

2.2
0.5
0.5
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
17
20
20
21
23
23
25
24
23
22
22
23
23
20
20
21
22
23
26
27
28
27
26

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
12
14
15
14
14
13
12
11
11
10
9
8
10
11
11
11
13
12
12
12
12
13

Dew Point (°C)

11
11
15
18
18
17
17
16
15
14
13
13
12
11
11
12
11
10
10
10
9
8
8
9

Relative Humidity (%)

69
74
89
95
96
88
89
88
85
85
83
82
82
79
79
80
75
68
61
59
53
51
50
54

Pressure (mb)

1009
1007
1006
1005
1005
1004
1004
1004
1004
1004
1004
1004
1005
1005
1006
1006
1007
1007
1007
1007
1007
1008
1008
1008

Ozone (du)

264
265
263
262
261
262
264
267
270
272
273
275
277
276
279
281
283
284
283
282
284
286
290
294

Monday 15

Waning Crescent 30%

23:29

16:41

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

Sun - Rise: 06:33, Set: 19:09, Transit: 12:50. Moon - Rise: 23:29, Set: 16:41. Civil Dark: 19:42 - 06:00. Nautical Dark: 20:22 - 05:20. Astro Dark: 21:04 - 04:38

Total Clouds (% Sky Obscured)

37
38
45
38
35
31
26
24
27
39
47
45
58
36
44
51
25
29
51
41
43
66
81
100

Low Clouds (% Sky Obscured)

37
38
45
38
35
31
26
24
27
39
47
39
36
33
28
35
25
29
34
33
15
21
29
38

Medium Clouds (% Sky Obscured)

0
4
0
0
0
0
0
0
0
0
0
0
0
5
5
5
0
0
5
4
0
11
19
28

High Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
0
0
1
2
9
15
16
0
3
15
7
12
61
60
81

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 (%)

34
15
12
8
4
4
4
3
1
2
2
2
1
2
3
3
3
2
3
4
10
10
19
10

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)

25
25
24
23
21
21
20
20
19
19
18
18
18
17
16
16
16
18
20
20
21
21
19
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
66
69
69
69
67
69
73
76
79
77
71
70
68
73
79
75
68
59
53
50
51
51
48

Pressure (mb)

1008
1008
1008
1009
1009
1010
1011
1011
1011
1012
1012
1012
1013
1013
1013
1014
1015
1015
1015
1015
1015
1016
1015
1015

Ozone (du)

303
300
302
305
304
306
303
303
303
302
302
303
303
304
304
304
306
306
308
308
305
300
297
293

Tuesday 16

Waning Crescent 20%

00:49

17:21

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
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:34, Set: 19:06, Transit: 12:49. Moon - Rise: 00:49, Set: 17:21. Civil Dark: 19:40 - 06:01. Nautical Dark: 20:20 - 05:21. Astro Dark: 21:02 - 04:40

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
97
100
100
94
100
99
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

33
28
23
28
33
38
48
59
70
71
69
71
75
83
94
93
98
100
100
95
100
99
99
98

Medium Clouds (% Sky Obscured)

29
29
30
30
35
40
45
45
53
100
60
59
79
87
69
100
99
99
92
87
82
85
88
91

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
97
100
100
94
95
84
84
61
42
12
20
8
4
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
9
6
9
4
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None

Precipitation Probability (%)

30
30
11
14
15
17
45
63
76
80
88
95
95
95
95
95
95
93
77
75
73
66
60
44

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.3
0.3
0.4
0.4
0.7
1
1.2
1.5
1.2
0.7
0.3
0.3
0.4
0.3
0.2
0

Wind Speed/Direction (mph)

17
16
15
14
13
12
11
10
9
8
8
9
9
10
11
12
12
12
13
14
15
17
17
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
8
8
8
8
8
9
10
10
10
10
11
11
11
11
12
13
14
15
15
15
16
16
16

Relative Humidity (%)

49
54
57
58
65
68
72
80
86
89
87
90
90
87
86
83
86
95
93
90
90
93
93
93

Pressure (mb)

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

Ozone (du)

288
287
283
282
281
278
277
275
271
267
263
262
262
261
261
260
257
257
254
254
253
253
254
255

Wednesday 17

Waning Crescent 12%

02:13

17:47

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
12 Bad
13 Bad
14 Bad
15 OK

Sun - Rise: 06:36, Set: 19:04, Transit: 12:49. Moon - Rise: 02:13, Set: 17:47. Civil Dark: 19:37 - 06:03. Nautical Dark: 20:17 - 05:23. Astro Dark: 20:59 - 04:42

Total Clouds (% Sky Obscured)

95
89
84
87
91
96
97
99
100
100
100
100
99
97
96
90
78
78
78
80
91
77
58
39

Low Clouds (% Sky Obscured)

87
75
63
64
64
67
51
35
24
29
34
25
18
17
19
24
25
25
25
25
24
27
30
36

Medium Clouds (% Sky Obscured)

88
41
84
74
39
49
50
50
45
42
28
57
38
42
52
0
0
0
0
0
0
1
3
4

High Clouds (% Sky Obscured)

0
0
0
39
63
78
89
90
90
100
100
100
86
72
60
70
42
32
58
75
88
65
41
15

ISS Passover

Visibility (miles)

9
7
7
6
8
4
3
3
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
Very Light Rain
None
Very 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 (%)

49
50
62
58
63
81
70
43
16
17
11
5
3
2
0
0
0
0
0
0
0
1
1
1

Precipitation Amount (mm)

0
0
0.2
0
0.2
0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
95
95
95
95
96
95
96
95
93
90
89
89
92
95
87
82
77
67
61
54
57
61

Pressure (mb)

1011
1011
1011
1011
1011
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

257
261
263
263
264
263
261
261
262
263
263
263
261
259
258
259
261
263
265
267
269
271
271
271

Thursday 18

Waning Crescent 6%

03:34

18:06

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

Sun - Rise: 06:38, Set: 19:02, Transit: 12:49. Moon - Rise: 03:34, Set: 18:06. Civil Dark: 19:35 - 06:04. Nautical Dark: 20:15 - 05:25. Astro Dark: 20:56 - 04:44

Total Clouds (% Sky Obscured)

48
58
71
59
45
30
27
23
21
40
58
76
56
35
15
30
48
68
63
56
51
59
67
77

Low Clouds (% Sky Obscured)

33
31
27
24
16
11
8
5
3
3
2
1
0
0
0
0
0
0
10
20
32
37
41
44

Medium Clouds (% Sky Obscured)

8
14
19
11
5
0
0
0
0
0
0
0
0
0
0
0
0
0
3
7
9
5
5
7

High Clouds (% Sky Obscured)

20
28
40
31
25
16
16
17
12
34
58
76
56
35
13
30
48
68
56
33
10
12
13
14

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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
15
11
12
12
12
11
11
10
11
11
11
11
10
11
12
13
13
14
16
21
20

Dew Point (°C)

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

Relative Humidity (%)

67
70
74
79
82
84
87
90
92
95
93
93
93
93
95
95
86
76
69
63
59
55
56
56

Pressure (mb)

1015
1015
1015
1016
1016
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1020
1021
1021
1022
1022
1022
1022
1022
1022

Ozone (du)

271
271
271
272
271
271
271
271
271
271
272
272
272
273
274
275
273
272
270
270
269
269
269
269

Friday 19

Waning Crescent 2%

04:52

18:20

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
12 Bad

Sun - Rise: 06:39, Set: 18:59, Transit: 12:48. Moon - Rise: 04:52, Set: 18:20. Civil Dark: 19:33 - 06:06. Nautical Dark: 20:12 - 05:27. Astro Dark: 20:54 - 04:45

Total Clouds (% Sky Obscured)

85
92
100
95
89
84
88
92
96
92
89
86
86
88
90
85
80
74
63
53
53

Low Clouds (% Sky Obscured)

30
15
0
0
0
0
7
11
17
30
46
64
59
54
53
53
50
46
39
32
30

Medium Clouds (% Sky Obscured)

19
28
39
43
42
37
35
27
19
33
52
70
58
48
35
23
12
3
3
2
2

High Clouds (% Sky Obscured)

36
64
89
75
64
48
36
33
35
31
31
26
23
22
15
9
8
7
29
51
53

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
2
2
0
1
0
0
0
1
0
0
0
0
0
0
0
2
6
7

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)

5
5
5
6
5
5
6
6
7
8
9
10
10
10
10
10
12
14
16
17
17

Chance of Frost

Temperature (°C)

20
18
17
16
16
15
15
15
15
15
15
15
15
15
15
15
17
19
20
22
23

Feels Like (°C)

20
20
20
20
15
15
15
14
14
14
13
13
13
13
13
13
14
15
15
16
17

Dew Point (°C)

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

Relative Humidity (%)

56
62
70
79
81
82
83
86
89
90
89
87
85
87
90
93
85
77
69
64
58

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1021
1021
1020
1020
1019
1018
1018
1017
1017
1017
1016
1016
1015
1014

Ozone (du)

269
268
268
267
266
265
265
263
261
260
259
258
257
257
256
255
255
254
254
253
252

Forecast for Herne, Kent, United Kingdom (51.35,1.12)

Generated: 13/09/25 15:55:19. Forecast: 13/09/25 to 19/09/25. Timezone: UTC+1.00