Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:37

16:51

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 OK
02 OK
03 OK
04 OK
05 OK
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:41, Set: 19:17, Transit: 12:58. Moon - Rise: 23:37, Set: 16:51. Civil Dark: 19:51 - 06:08. Nautical Dark: 20:31 - 05:28. Astro Dark: 21:13 - 04:46

Total Clouds (% Sky Obscured)

92
81
80
80
95
96
43
50
58
58
61
52
46
35
39
31
33
32
46
96
100
100
96
100

Low Clouds (% Sky Obscured)

57
49
46
47
34
37
43
44
58
58
61
52
46
35
39
31
33
32
24
29
28
43
48
39

Medium Clouds (% Sky Obscured)

25
24
5
1
2
0
5
5
6
4
0
0
0
0
0
0
0
0
0
0
0
0
25
51

High Clouds (% Sky Obscured)

0
0
0
0
39
39
3
8
0
2
0
0
0
0
0
0
0
3
46
83
97
62
93
70

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 (%)

23
30
33
31
14
13
15
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
1

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
60
61
63
65
66
72
76
75
75
75
75
74
74
76
76
79
79
80
80
72
65
60
55

Pressure (mb)

1005
1005
1006
1006
1006
1006
1007
1008
1009
1010
1011
1011
1012
1012
1013
1014
1014
1015
1015
1016
1017
1017
1017
1018

Ozone (du)

306
309
311
312
307
308
309
309
308
308
311
310
309
308
305
303
304
303
301
301
301
302
301
298

Tuesday 16

Waning Crescent 20%

00:58

17:30

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:43, Set: 19:15, Transit: 12:58. Moon - Rise: 00:58, Set: 17:30. Civil Dark: 19:48 - 06:09. Nautical Dark: 20:28 - 05:30. Astro Dark: 21:10 - 04:48

Total Clouds (% Sky Obscured)

100
97
100
100
96
90
100
100
100
100
100
100
100
100
99
100
100
99
100
99
97
100
100
100

Low Clouds (% Sky Obscured)

49
75
50
12
0
40
28
42
32
36
57
84
68
68
70
83
89
85
85
95
94
100
100
100

Medium Clouds (% Sky Obscured)

92
57
52
35
35
34
30
44
70
74
96
80
93
81
88
100
100
98
100
99
76
98
93
87

High Clouds (% Sky Obscured)

100
86
100
100
89
43
100
100
100
100
100
100
100
95
78
32
97
26
44
20
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
4
3
2
15
2
2
14
37
51
57
52
39
50
69
91
95
95
95
84
73
72
52
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.2
0
0
0
0.4
0.6
1
0.8
0.8
0.4
0.2
0.3
0
0

Wind Speed/Direction (mph)

16
16
16
15
15
13
12
11
10
9
8
7
6
7
7
7
8
7
8
9
11
11
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
6
8
7
8
8
9
9
9
9
10
11
11
11
12
12
13
14
14
14
14
14
15

Relative Humidity (%)

52
49
48
54
51
58
60
68
71
76
77
81
89
87
89
89
90
95
96
96
95
93
92
92

Pressure (mb)

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

Ozone (du)

291
288
283
279
277
274
272
271
269
267
264
264
263
261
258
257
258
258
259
261
262
264
265
266

Wednesday 17

Waning Crescent 12%

02:21

17:56

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:44, Set: 19:12, Transit: 12:58. Moon - Rise: 02:21, Set: 17:56. Civil Dark: 19:46 - 06:11. Nautical Dark: 20:26 - 05:31. Astro Dark: 21:08 - 04:50

Total Clouds (% Sky Obscured)

98
100
96
100
100
90
89
86
72
82
76
65
99
98
98
97
96
96
94
95
96
95
84
85

Low Clouds (% Sky Obscured)

96
100
85
55
63
72
67
66
56
58
48
52
61
57
52
51
53
49
41
48
57
70
79
85

Medium Clouds (% Sky Obscured)

53
55
66
100
97
90
7
12
13
58
21
8
34
31
33
26
29
39
47
59
62
64
66
67

High Clouds (% Sky Obscured)

0
1
4
72
70
0
14
8
8
4
4
0
3
23
43
63
42
22
0
2
4
5
4
3

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
6
29
5
5
13
5
1
0
0
0
0
0
0
0
0
2
2
3
7
9
10
11
12

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
86
88
89
89
86
88
89
93
87
86
85
84
83
79
83
86
92
90
89
82
77
69

Pressure (mb)

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

Ozone (du)

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

Thursday 18

Waning Crescent 6%

03:43

18:15

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:46, Set: 19:10, Transit: 12:57. Moon - Rise: 03:43, Set: 18:15. Civil Dark: 19:43 - 06:13. Nautical Dark: 20:23 - 05:33. Astro Dark: 21:05 - 04:52

Total Clouds (% Sky Obscured)

86
84
78
72
97
98
99
96
95
92
89
87
84
78
79
77
84
76
82
95
91
99
98
98

Low Clouds (% Sky Obscured)

86
84
78
72
77
75
78
75
71
68
71
62
57
60
64
63
53
51
49
54
56
70
73
73

Medium Clouds (% Sky Obscured)

59
49
39
30
31
32
36
42
39
32
69
72
53
25
17
16
51
35
48
49
43
44
43
36

High Clouds (% Sky Obscured)

2
1
1
0
14
22
30
41
51
60
52
37
14
11
11
10
9
7
7
42
60
89
89
91

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
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
None

Precipitation Probability (%)

11
32
47
55
44
31
16
15
11
5
4
3
0
2
3
1
5
3
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0.2
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)

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

Chance of Frost

Temperature (°C)

18
19
19
19
19
19
19
18
18
17
17
17
17
17
16
16
16
16
16
16
17
18
19
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
60
58
58
59
67
73
80
85
86
90
89
90
90
92
93
93
93
95
93
89
79
73
69

Pressure (mb)

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

Ozone (du)

261
261
262
261
261
259
258
258
258
258
257
257
259
259
258
257
257
259
258
258
259
259
259
258

Friday 19

Waning Crescent 2%

05:01

18:29

12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 OK
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

Sun - Rise: 06:48, Set: 19:08, Transit: 12:57. Moon - Rise: 05:01, Set: 18:29. Civil Dark: 19:41 - 06:14. Nautical Dark: 20:21 - 05:35. Astro Dark: 21:02 - 04:54

Total Clouds (% Sky Obscured)

98
78
63
47
40
39
39
80
87
93
94
95
96
97
99
100
100
100
100
95
89
84
90
95

Low Clouds (% Sky Obscured)

74
63
52
41
39
37
36
57
60
63
56
49
43
50
57
58
47
38
28
30
33
37
27
18

Medium Clouds (% Sky Obscured)

49
17
8
0
0
0
0
1
2
2
3
3
3
11
20
30
43
55
68
69
73
72
77
82

High Clouds (% Sky Obscured)

85
59
39
20
10
3
3
31
51
72
79
85
90
93
97
100
100
100
100
89
77
66
76
87

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
1
2
1
2
0
0
0
0
0
0
0
0
0
0
2
6
6
3
1
0
8
13

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
62
59
58
61
62
69
80
81
81
82
83
85
87
89
89
90
90
90
90
86
82
78
76

Pressure (mb)

1019
1019
1018
1018
1017
1017
1017
1017
1017
1018
1018
1017
1017
1017
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013

Ozone (du)

258
258
259
259
259
260
260
261
261
260
260
261
262
263
263
263
263
264
264
265
265
265
265
264

Saturday 20

Waning Crescent 2%

06:16

18:40

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:49, Set: 19:06, Transit: 12:57. Moon - Rise: 06:16, Set: 18:40. Civil Dark: 19:39 - 06:16. Nautical Dark: 20:18 - 05:37. Astro Dark: 21:00 - 04:56

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
73
43
14
21
35
34
60
85
99
96
93
90
88
86

Low Clouds (% Sky Obscured)

8
19
28
39
57
78
98
89
77
67
52
28
10
17
24
31
27
24
21
17
11
1
17
34

Medium Clouds (% Sky Obscured)

87
91
95
100
92
84
86
83
82
74
51
34
13
8
4
0
0
0
0
0
0
0
9
18

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
73
43
14
21
35
34
60
79
99
96
93
90
79
67

ISS Passover

Visibility (miles)

9
9
9
8
8
8
9
9
9
9
9
6
3
0
1
2
3
5
7
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
32
44
52
50
49
49
46
42
34
38
37
34
40
45
51
48
43
35
30
22
8
15
18

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
21
20
18
17
17
16
16
16
16
16
16
15
15
14
14
13
13
12
11
13
15
16
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
69
76
83
90
90
93
95
95
96
98
98
96
98
96
98
96
96
93
92
87
82
77
70

Pressure (mb)

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

Ozone (du)

264
263
263
263
263
264
264
265
266
267
268
269
269
270
271
271
272
273
274
275
275
276
277
279

Sunday 21

New Moon 0%

07:29

18:51

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

Sun - Rise: 06:51, Set: 19:03, Transit: 12:56. Moon - Rise: 07:29, Set: 18:51. Civil Dark: 19:36 - 06:18. Nautical Dark: 20:16 - 05:38. Astro Dark: 20:57 - 04:57

Total Clouds (% Sky Obscured)

86
64
47
37
39
28
17
21
25
29
36
38
38

Low Clouds (% Sky Obscured)

50
37
22
10
17
19
15
16
13
13
16
22
28

Medium Clouds (% Sky Obscured)

25
14
7
1
1
1
1
2
3
4
8
10
13

High Clouds (% Sky Obscured)

55
55
36
6
36
28
17
21
25
29
36
22
0

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

20
21
26
33
37
35
27
37
34
20
30
32
26

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
19
18
17
17
17
18
14
14
14
14
13

Dew Point (°C)

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

Relative Humidity (%)

62
56
56
55
55
61
67
75
79
84
90
93
95

Pressure (mb)

1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014

Ozone (du)

282
284
284
284
284
287
290
294
294
294
294
293
292

Forecast for Reading, Reading, United Kingdom (51.45,-0.98)

Generated: 15/09/25 12:40:08. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00