Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:31

17:35

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 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:40, Set: 19:15, Transit: 12:58. Moon - Rise: 23:31, Set: 17:35. Civil Dark: 19:49 - 06:06. Nautical Dark: 20:32 - 05:26. Astro Dark: 21:16 - 04:43

Total Clouds (% Sky Obscured)

94
91
86
80
66
65
70
70
68
69
65
50
38
44
87
96
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

63
59
55
49
48
49
60
53
53
53
51
48
38
44
49
69
57
17
25
23
16
3
29
15

Medium Clouds (% Sky Obscured)

25
32
2
0
0
0
0
0
0
0
0
0
0
0
0
4
14
28
30
40
41
42
46
39

High Clouds (% Sky Obscured)

2
2
0
0
0
0
0
0
0
0
0
0
0
5
64
45
52
45
100
100
100
100
94
95

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 (%)

4
9
0
0
4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
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)

17
18
18
18
21
19
19
18
18
18
17
16
16
17
19
18
19
19
18
17
16
15
13
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
9
9
7
7
6
6
6
4
4
4
5
6
7
6
6
6
6
5
6
6
6
7

Relative Humidity (%)

73
70
71
73
65
69
65
67
65
62
63
63
65
63
62
57
53
52
49
48
49
53
56
61

Pressure (mb)

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

Ozone (du)

309
309
308
305
303
302
300
299
297
295
293
293
293
293
293
291
289
288
283
279
277
275
273
271

Tuesday 16

Waning Crescent 20%

00:52

18:00

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
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:42, Set: 19:12, Transit: 12:57. Moon - Rise: 00:52, Set: 18:00. Civil Dark: 19:46 - 06:08. Nautical Dark: 20:30 - 05:28. Astro Dark: 21:13 - 04:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
85
54
48
62
50
80
45
81
85
63

Low Clouds (% Sky Obscured)

34
26
55
63
64
82
88
88
88
89
100
100
100
100
85
54
48
62
50
37
43
43
45
44

Medium Clouds (% Sky Obscured)

39
94
84
80
98
91
100
100
100
99
100
89
70
49
19
30
22
25
25
21
2
21
43
18

High Clouds (% Sky Obscured)

100
97
99
100
100
100
100
79
100
97
62
80
48
6
4
4
0
1
0
31
1
20
6
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
5
5
5
9
7
9
4
9
9
9
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Light Rain
Light Rain
Light Rain
None
None
Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
16
51
78
95
95
95
95
95
95
79
52
83
60
69
9
4
55
19
1
0
0
2

Precipitation Amount (mm)

0
0
0
0
0.3
0.4
0.4
0.7
1.2
2.2
1
0.3
0
0.5
0.4
0.6
0
0
0.4
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
9
9
9
9
8
9
10
10
12
12
13
15
16
18
18
19
19
18
18
17
16
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
8
9
9
9
9
9
10
11
12
13
13
14
14
15
16
18
19
19
19
18
17
16
15

Relative Humidity (%)

70
74
77
81
83
81
84
89
93
93
96
95
95
93
93
95
95
93
93
93
92
93
92
93

Pressure (mb)

1017
1017
1017
1017
1017
1016
1016
1015
1014
1014
1013
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012

Ozone (du)

269
268
266
265
263
262
262
261
259
260
260
262
262
261
262
261
262
264
267
266
266
265
265
263

Wednesday 17

Waning Crescent 12%

02:17

18:17

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
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:44, Set: 19:10, Transit: 12:57. Moon - Rise: 02:17, Set: 18:17. Civil Dark: 19:44 - 06:10. Nautical Dark: 20:27 - 05:29. Astro Dark: 21:10 - 04:47

Total Clouds (% Sky Obscured)

48
51
82
82
88
69
91
94
92
97
98
100
100
98
99
100
99
99
100
100
98
97
96
93

Low Clouds (% Sky Obscured)

42
48
70
65
49
55
52
39
37
41
67
100
100
96
65
87
73
61
58
52
56
51
53
46

Medium Clouds (% Sky Obscured)

5
50
64
27
30
6
21
24
16
18
15
19
22
23
29
36
31
31
26
74
33
39
45
69

High Clouds (% Sky Obscured)

0
0
1
0
0
0
1
2
22
4
1
10
17
22
39
46
90
95
98
100
75
50
20
23

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 (%)

4
18
22
11
0
0
1
0
0
2
1
18
22
1
6
6
7
4
4
2
3
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)

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

Chance of Frost

Temperature (°C)

16
15
14
14
14
14
13
13
14
14
14
14
14
15
16
17
19
20
21
22
22
21
20
19

Feels Like (°C)

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

Dew Point (°C)

15
14
13
13
13
13
13
13
13
13
13
13
13
13
13
13
15
14
13
13
14
14
15
15

Relative Humidity (%)

95
95
93
93
95
96
96
96
96
93
93
92
89
89
86
78
77
68
59
59
62
65
70
76

Pressure (mb)

1013
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

262
262
260
260
261
261
261
261
261
261
263
262
263
262
261
260
260
260
259
258
256
257
258
258

Thursday 18

Waning Crescent 6%

03:40

18:30

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
16 Bad
17 Bad
18 OK
19 OK

Sun - Rise: 06:45, Set: 19:08, Transit: 12:57. Moon - Rise: 03:40, Set: 18:30. Civil Dark: 19:42 - 06:12. Nautical Dark: 20:25 - 05:31. Astro Dark: 21:07 - 04:49

Total Clouds (% Sky Obscured)

90
88
88
89
87
93
93
90
90
94
99
85
94
84
88
86
90
89
90
86
64
64
47
40

Low Clouds (% Sky Obscured)

42
32
38
44
51
52
52
53
54
56
56
55
48
45
45
48
53
49
45
44
45
45
43
40

Medium Clouds (% Sky Obscured)

69
48
13
54
46
69
78
80
77
87
90
53
70
51
40
23
12
2
0
0
0
2
0
0

High Clouds (% Sky Obscured)

36
49
43
42
36
48
62
82
90
74
95
73
87
65
71
66
73
73
72
66
41
33
11
6

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 (%)

2
0
0
0
0
6
9
9
15
18
20
17
12
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)

13
13
13
12
12
11
11
10
10
10
9
9
9
10
11
12
13
13
13
13
13
10
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
15
15
15
15
14
15
15
15
15
15
14
14
14
14
14
14
15
15
14
14
14
15
15

Relative Humidity (%)

82
85
88
89
89
90
92
95
95
96
96
95
90
82
76
69
66
63
60
58
56
58
66
75

Pressure (mb)

1017
1017
1017
1017
1018
1018
1018
1017
1017
1017
1017
1017
1017
1017
1018
1017
1017
1017
1017
1016
1016
1016
1016
1016

Ozone (du)

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

Friday 19

Waning Crescent 2%

04:59

18:41

20 OK
21 OK
22 OK
23 OK
00 OK
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

Sun - Rise: 06:47, Set: 19:05, Transit: 12:56. Moon - Rise: 04:59, Set: 18:41. Civil Dark: 19:39 - 06:13. Nautical Dark: 20:22 - 05:33. Astro Dark: 21:04 - 04:51

Total Clouds (% Sky Obscured)

36
29
42
30
29
50
41
70
79
86
95
98
99
100
100
100
100
89
79
68
79
90
100
100

Low Clouds (% Sky Obscured)

36
29
32
30
29
33
37
41
50
57
68
52
39
26
31
35
40
42
43
45
46
54
50
34

Medium Clouds (% Sky Obscured)

2
1
3
5
3
12
3
20
38
40
47
68
45
30
57
72
89
83
75
63
61
63
70
82

High Clouds (% Sky Obscured)

6
7
10
3
0
11
6
27
45
55
66
77
88
100
100
100
100
77
55
32
61
81
100
97

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
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
2
16
16
15
12
16
12
6
12
13
12
14
11
3
10
11
8
16

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)

4
5
5
5
5
5
5
5
5
5
5
5
5
6
6
6
6
7
7
8
8
8
8
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
81
82
85
87
90
90
92
93
92
89
92
85
78
73
71
70
68
68
68
69
71
75
78

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1014
1014
1015
1014
1014
1014
1013
1013
1012
1012
1011
1011
1011
1011

Ozone (du)

264
265
265
266
267
266
266
267
268
268
267
269
268
268
268
268
268
268
268
268
268
269
271
272

Saturday 20

Waning Crescent 0%

06:15

18:50

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
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 06:49, Set: 19:03, Transit: 12:56. Moon - Rise: 06:15, Set: 18:50. Civil Dark: 19:37 - 06:15. Nautical Dark: 20:19 - 05:35. Astro Dark: 21:02 - 04:53

Total Clouds (% Sky Obscured)

99
98
96
93
93
90
85
84
87
90
89
84
84
91
93
94
96
98
99
100
97
94
93
95

Low Clouds (% Sky Obscured)

22
9
17
25
28
27
26
27
43
51
49
66
77
85
86
87
88
91
95
99
97
94
93
95

Medium Clouds (% Sky Obscured)

83
86
79
72
64
49
48
50
57
64
66
62
49
50
28
17
24
16
25
21
15
17
15
17

High Clouds (% Sky Obscured)

94
92
87
85
81
76
59
50
54
62
75
80
70
75
75
75
70
55
50
45
38
31
21
28

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

Precipitation Probability (%)

19
22
24
23
21
22
21
16
24
35
49
85
95
95
95
95
95
95
91
35
47
52
45
37

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.5
1
1.9
1.5
1.6
2.1
1.7
0.7
0
0
0.2
0
0

Wind Speed/Direction (mph)

7
6
6
6
5
4
5
7
8
8
8
9
8
8
7
7
9
12
13
13
15
16
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
83
86
89
92
96
95
95
93
89
84
79
78
76
76
73
68
65
64
63
61
65
70
74

Pressure (mb)

1011
1011
1011
1011
1011
1011
1010
1010
1009
1009
1008
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1010
1010
1011

Ozone (du)

273
274
275
278
282
285
291
296
302
302
303
304
307
309
311
312
312
312
313
314
316
318
320
323

Sunday 21

New Moon 1%

07:29

18:59

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: 06:50, Set: 19:01, Transit: 12:56. Moon - Rise: 07:29, Set: 18:59. Civil Dark: 19:34 - 06:17. Nautical Dark: 20:17 - 05:37. Astro Dark: 20:59 - 04:55

Total Clouds (% Sky Obscured)

97
97
95
89
77
69
64
81
79
80
82
79
82
79
92
96
100

Low Clouds (% Sky Obscured)

97
97
95
89
77
69
64
81
79
80
81
75
69
63
75
85
96

Medium Clouds (% Sky Obscured)

23
25
25
30
30
31
24
21
22
27
29
29
32
54
53
52
50

High Clouds (% Sky Obscured)

25
24
36
48
60
65
64
80
79
80
82
79
82
79
92
95
90

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

26
20
26
23
17
17
14
10
13
12
4
12
15
13
31
35
32

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
8
8
8
8
8
8
8
8
8
8
8
6
6
7
7
8

Dew Point (°C)

9
9
10
10
10
10
10
10
9
9
9
9
9
9
9
9
9

Relative Humidity (%)

79
81
87
88
90
91
90
87
86
88
90
93
88
86
81
81
81

Pressure (mb)

1011
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016

Ozone (du)

325
326
328
328
328
328
328
328
328
328
329
329
329
328
327
325
323

Forecast for Northampton, Northamptonshire, United Kingdom (52.24,-0.89)

Generated: 15/09/25 20:27:46. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00