Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 30%

00:58

17:30

05 Good
06 OK
07 OK
08 OK
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: 06:41, Set: 19:15, Transit: 12:58. Moon - Rise: 00:58, Set: 17:30. Civil Dark: 19:48 - 06:08. Nautical Dark: 20:28 - 05:28. Astro Dark: 21:10 - 04:48

Total Clouds (% Sky Obscured)

12
20
23
22
100
100
100
100
100
100
100
100
100
100
100
96
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

12
20
23
22
50
50
38
25
46
22
16
7
0
11
16
29
31
26
37
73
62
86
86
89

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
43
32
21
44
44
42
45
80
94
35
25
97
100
90
89
99
100
100

High Clouds (% Sky Obscured)

2
0
0
21
40
74
68
100
100
100
100
100
100
100
100
88
100
100
100
100
100
100
60
40

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

Precipitation Probability (%)

0
0
0
0
0
1
0
0
0
0
1
0
1
2
3
5
8
19
62
79
89
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.6
0.7
0.7
1

Wind Speed/Direction (mph)

12
12
12
12
16
17
17
16
16
16
16
14
12
11
10
9
7
6
7
8
8
7
6
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
81
77
71
63
58
54
51
50
50
53
57
60
67
75
83
86
83
80
80
84
89
90

Pressure (mb)

1014
1015
1016
1016
1017
1018
1018
1018
1018
1019
1018
1019
1018
1019
1019
1019
1019
1019
1019
1019
1018
1018
1017
1016

Ozone (du)

303
304
304
303
301
297
294
291
286
281
277
274
271
268
264
262
261
259
257
257
256
255
253
252

Wednesday 17

Waning Crescent 20%

02:21

17:56

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: 06:43, Set: 19:12, Transit: 12:57. Moon - Rise: 02:21, Set: 17:56. Civil Dark: 19:46 - 06:09. Nautical Dark: 20:25 - 05:30. Astro Dark: 21:07 - 04:50

Total Clouds (% Sky Obscured)

99
99
99
100
100
100
100
97
99
98
97
100
98
99
100
97
100
99
93
100
100
95
91
83

Low Clouds (% Sky Obscured)

99
86
90
100
100
100
100
92
97
80
76
100
95
98
100
95
90
94
88
100
100
91
78
78

Medium Clouds (% Sky Obscured)

99
99
99
100
95
88
90
86
40
56
59
89
85
53
71
34
35
52
9
18
30
36
33
26

High Clouds (% Sky Obscured)

4
5
6
0
0
3
0
0
0
0
0
4
0
0
0
0
65
46
0
0
1
1
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
5
9
9
9
9
9
9
4
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

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

Precipitation Probability (%)

85
83
90
68
47
28
32
33
9
14
9
6
11
37
36
3
3
1
1
3
3
3
0
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
90
89
87
90
92
93
93
93
93
92
95
95
96
96
98
96
95
93
93
95
95
89

Pressure (mb)

1016
1015
1014
1014
1014
1014
1014
1014
1014
1015
1014
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

253
253
254
254
255
257
258
260
263
263
264
264
262
262
259
260
261
261
262
261
258
257
257
258

Thursday 18

Waning Crescent 12%

03:42

18:15

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: 19:10, Transit: 12:57. Moon - Rise: 03:42, Set: 18:15. Civil Dark: 19:43 - 06:11. Nautical Dark: 20:23 - 05:31. Astro Dark: 21:05 - 04:52

Total Clouds (% Sky Obscured)

93
94
77
69
65
65
64
55
78
54
69
72
67
74
75
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

76
88
74
67
65
63
64
53
71
54
63
43
38
43
50
48
44
55
58
53
52
51
47
41

Medium Clouds (% Sky Obscured)

38
10
2
1
0
0
0
0
0
4
11
9
11
10
16
20
11
3
4
3
3
3
3
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
24
0
6
70
67
59
55
98
100
100
100
100
100
100
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
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 (%)

6
17
4
13
2
2
1
4
0
1
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)

12
13
13
12
13
13
14
17
18
17
17
16
14
13
11
9
8
7
6
6
5
5
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
93
89
90
88
86
84
71
67
64
61
61
65
71
81
90
93
95
96
95
96
95
96
96

Pressure (mb)

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

Ozone (du)

259
259
259
259
258
257
257
257
257
256
256
255
255
255
257
257
257
256
257
257
257
258
259
260

Friday 19

Waning Crescent 6%

05:00

18:29

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 OK
20 OK
21 OK
22 OK
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:46, Set: 19:08, Transit: 12:57. Moon - Rise: 05:00, Set: 18:29. Civil Dark: 19:41 - 06:13. Nautical Dark: 20:21 - 05:33. Astro Dark: 21:02 - 04:54

Total Clouds (% Sky Obscured)

100
100
96
92
88
92
96
100
99
96
95
83
66
21
25
32
30
31
35
40
57
80
100
100

Low Clouds (% Sky Obscured)

41
42
46
46
42
52
59
63
54
45
34
28
22
18
18
19
19
20
18
17
26
35
41
54

Medium Clouds (% Sky Obscured)

3
3
12
4
3
4
2
35
23
34
10
38
23
3
13
25
3
2
2
1
0
3
5
47

High Clouds (% Sky Obscured)

100
100
89
76
65
76
89
100
99
96
95
70
43
1
2
4
17
21
31
33
46
75
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
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
1
3
4
21

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
4
4
6
7
8
9
11
11
11
11
10
9
8
7
6
6
6
6
6
6
6
7

Chance of Frost

Temperature (°C)

15
15
14
16
18
19
21
22
23
24
24
23
22
21
19
17
16
15
15
15
14
14
14
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
92
83
71
56
47
43
40
40
42
48
56
67
74
83
87
89
86
86
90
90
92

Pressure (mb)

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

Ozone (du)

260
261
262
262
262
263
263
263
262
262
261
261
262
262
263
262
262
264
265
266
266
267
268
269

Saturday 20

Waning Crescent 2%

05:00

18:40

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 Good
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: 19:05, Transit: 12:56. Moon - Rise: 05:00, Set: 18:40. Civil Dark: 19:39 - 06:14. Nautical Dark: 20:18 - 05:35. Astro Dark: 20:59 - 04:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
100
100
90
80
70
50
32
9
55
55
63
70
82
95
100
100
100
100

Low Clouds (% Sky Obscured)

83
92
83
76
62
52
48
44
40
37
35
26
18
9
16
8
0
8
16
24
35
46
52
53

Medium Clouds (% Sky Obscured)

34
52
76
93
96
51
52
30
34
35
25
20
20
0
44
25
22
14
10
15
15
20
25
33

High Clouds (% Sky Obscured)

100
100
100
100
100
98
100
100
85
69
54
32
27
0
35
33
41
59
71
85
90
90
90
90

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

33
41
64
66
61
39
24
0
0
1
3
23
20
1
8
10
9
9
6
1
5
5
3
22

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
85
81
79
77
73
61
60
57
52
51
54
59
66
74
76
82
86
89
92
93
93
93
96

Pressure (mb)

1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1013
1013
1013
1013
1013
1013
1012
1012

Ozone (du)

269
269
268
269
270
271
270
271
271
270
271
273
273
280
290
293
296
299
301
303
304
308
311
314

Sunday 21

New Moon 0%

06:15

18:50

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: 06:49, Set: 19:03, Transit: 12:56. Moon - Rise: 06:15, Set: 18:50. Civil Dark: 19:36 - 06:16. Nautical Dark: 20:16 - 05:37. Astro Dark: 20:57 - 04:57

Total Clouds (% Sky Obscured)

100
100
96
100
100
86
77
67
71
74
79
73
67
61
60
61
60
59
59
61
57
55
49
55

Low Clouds (% Sky Obscured)

56
57
52
49
47
45
44
42
47
49
53
48
46
44
46
42
43
43
37
36
40
44
47
51

Medium Clouds (% Sky Obscured)

41
48
31
15
4
3
3
3
3
6
24
24
21
10
30
57
60
59
39
18
13
7
0
1

High Clouds (% Sky Obscured)

85
80
75
80
80
57
30
0
0
0
0
0
0
0
0
1
2
1
1
1
1
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
6
5
6
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
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

21
15
18
16
15
13
11
7
11
15
18
28
38
49
49
50
51
38
25
6
11
12
6
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
96
83
71
62
58
53
50
53
53
55
61
69
76
80
84
90
88
87
85
85
88
90

Pressure (mb)

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

Ozone (du)

316
317
318
318
318
318
319
320
321
323
325
327
327
328
328
328
328
328
328
328
329
328
328
327

Monday 22

Waxing Crescent 1%

07:28

19:00

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: 06:51, Set: 19:01, Transit: 12:56. Moon - Rise: 07:28, Set: 19:00. Civil Dark: 19:34 - 06:18. Nautical Dark: 20:13 - 05:38. Astro Dark: 20:54 - 04:59

Total Clouds (% Sky Obscured)

67
72
69
65
63
58
55
54
64
75
91
96
99
100
94
87
79
74
72
72

Low Clouds (% Sky Obscured)

54
57
65
65
63
58
48
37
47
57
69
76
83
90
81
78
70
60
48
37

Medium Clouds (% Sky Obscured)

2
4
2
1
0
1
3
6
14
16
17
20
24
32
27
22
16
28
31
38

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
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

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
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

13
8
8
6
2
8
9
6
25
31
35
40
48
46
37
25
2
3
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
5
6
6
6
6
6
11
10
10
10
10
10
9
8
9
8
8

Dew Point (°C)

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

Relative Humidity (%)

85
84
82
78
75
71
64
59
54
55
56
57
58
59
59
59
57
56
60
65

Pressure (mb)

1017
1018
1018
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

328
328
328
331
333
336
334
332
331
329
328
327
326
326
325
325
324
323
323
323

Forecast for Shinfield, Wokingham, United Kingdom (51.42,-0.94)

Generated: 16/09/25 05:26:45. Forecast: 16/09/25 to 22/09/25. Timezone: UTC+1.00