Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:58

17:38

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: 06:55, Set: 19:28, Transit: 13:12. Moon - Rise: 23:58, Set: 17:38. Civil Dark: 20:01 - 06:23. Nautical Dark: 20:40 - 05:44. Astro Dark: 21:21 - 05:03

Total Clouds (% Sky Obscured)

75
68
69
96
80
100
100
94
93
99
100
100
100
100
100
100
100
100
100
100
100
100
100
98

Low Clouds (% Sky Obscured)

57
60
68
58
67
65
66
70
68
72
48
61
70
68
60
79
75
56
58
52
55
67
77
92

Medium Clouds (% Sky Obscured)

0
0
0
1
0
6
19
15
79
77
80
58
67
67
91
91
72
85
96
98
86
97
97
96

High Clouds (% Sky Obscured)

0
53
69
92
80
100
100
94
88
98
100
100
100
100
100
100
100
99
100
100
100
100
100
50

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
Very Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

2
1
2
7
16
9
19
9
10
20
19
11
23
16
16
21
24
24
40
44
54
68
67
89

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.6

Wind Speed/Direction (mph)

21
20
19
18
17
17
15
16
14
12
12
14
15
14
14
13
13
12
11
9
9
7
7
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
9
9
9
9
9
9
9
9
10
10
9
9
9
9
10
9
10
11
11
11
11
12

Relative Humidity (%)

83
84
81
81
81
80
80
81
83
83
80
75
73
68
66
67
70
69
73
86
90
92
93
95

Pressure (mb)

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

Ozone (du)

302
305
303
299
297
295
293
292
288
286
284
281
279
279
278
276
273
271
270
267
265
264
261
261

Tuesday 16

Waning Crescent 20%

01:18

18:06

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: 19:26, Transit: 13:11. Moon - Rise: 01:18, Set: 18:06. Civil Dark: 19:59 - 06:24. Nautical Dark: 20:37 - 05:45. Astro Dark: 21:18 - 05:04

Total Clouds (% Sky Obscured)

100
98
96
96
99
92
99
98
100
100
100
87
86
83
89
85
87
88
79
83
85
82
89
88

Low Clouds (% Sky Obscured)

100
93
92
91
98
85
84
96
100
100
100
86
85
80
74
75
79
79
59
66
71
62
62
68

Medium Clouds (% Sky Obscured)

100
94
75
29
22
59
69
65
78
77
50
1
2
5
30
22
14
23
37
38
35
38
53
46

High Clouds (% Sky Obscured)

100
75
40
9
0
1
32
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0

ISS Passover

Visibility (miles)

7
6
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
13
6

Precipitation Type

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
None
None

Precipitation Probability (%)

92
66
38
27
29
19
2
7
6
12
12
20
24
13
10
8
8
11
9
7
6
7
8
6

Precipitation Amount (mm)

0.5
0.3
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
15
17
19
20
21
20
20
20
19
19
18
20
20
19
18
17
16
17
15
13
13
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
96
96
93
95
95
95
95
96
95
96
95
93
92
92
92
92
89
92
93
96
96
96

Pressure (mb)

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

Ozone (du)

259
259
258
257
257
256
257
257
257
257
259
259
263
264
262
262
261
260
260
261
262
263
263
262

Wednesday 17

Waning Crescent 12%

02:40

18:26

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: 19:24, Transit: 13:11. Moon - Rise: 02:40, Set: 18:26. Civil Dark: 19:56 - 06:26. Nautical Dark: 20:35 - 05:47. Astro Dark: 21:16 - 05:06

Total Clouds (% Sky Obscured)

96
98
100
100
94
89
90
83
83
88
88
85
88
83
85
92
94
99
97
100
100
99
100
96

Low Clouds (% Sky Obscured)

64
82
100
100
86
80
90
82
81
86
84
83
87
79
77
75
75
75
74
86
91
95
100
92

Medium Clouds (% Sky Obscured)

52
46
27
32
13
5
0
0
0
0
0
0
0
4
15
42
47
26
33
45
42
33
48
20

High Clouds (% Sky Obscured)

1
6
23
3
2
0
1
0
12
2
1
1
7
8
8
60
60
87
83
100
90
71
73
62

ISS Passover

Visibility (miles)

9
1
3
6
6
6
9
4
0
9
9
9
9
9
9
9
9
9
9
9
9
0
0
0

Fog (%)

0
0
0
0
53
54
6
12
54
56
57
39
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 (%)

4
4
4
8
18
6
9
3
3
1
0
1
0
2
0
1
0
0
1
0
1
1
0
3

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
10
10
12
13
12
15
16
17
18
18
18
18
17
16
15
13
11
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

14
14
14
14
14
14
15
15
15
15
15
15
15
16
16
16
16
16
16
16
15
15
15
15

Relative Humidity (%)

96
96
98
98
96
96
96
98
96
95
92
89
86
83
81
81
82
83
86
90
96
98
98
100

Pressure (mb)

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

Ozone (du)

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

Thursday 18

Waning Crescent 6%

04:00

18:41

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: 19:21, Transit: 13:11. Moon - Rise: 04:00, Set: 18:41. Civil Dark: 19:54 - 06:27. Nautical Dark: 20:33 - 05:49. Astro Dark: 21:13 - 05:08

Total Clouds (% Sky Obscured)

96
91
88
94
98
100
100
100
93
86
79
76
79
79
82
84
77
85
88
95
99
100
98
100

Low Clouds (% Sky Obscured)

85
80
80
79
79
83
88
93
82
74
66
60
58
56
55
53
55
52
53
71
84
87
76
92

Medium Clouds (% Sky Obscured)

11
2
4
4
2
0
2
0
3
2
16
37
50
55
61
70
27
25
12
56
74
37
43
56

High Clouds (% Sky Obscured)

82
62
62
76
89
99
99
100
75
64
45
45
50
72
70
81
53
67
73
81
95
87
95
100

ISS Passover

Visibility (miles)

0
0
0
0
0
0
0
1
8
9
9
9
9
9
9
9
9
9
9
9
9
7
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
2
2
2
0
1
2
1
4
5
4
3
1
0
0
0
0
1
7
12
17
18
8
9

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
98
100
100
98
98
98
98
92
86
82
78
77
73
77
76
82
87
92
95
93
93

Pressure (mb)

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

Ozone (du)

269
268
266
265
265
266
266
266
267
267
268
268
269
268
268
269
270
271
274
273
273
273
274
275

Friday 19

Waning Crescent 2%

05:17

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 OK
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:02, Set: 19:19, Transit: 13:10. Moon - Rise: 05:17, Set: 18:53. Civil Dark: 19:52 - 06:29. Nautical Dark: 20:30 - 05:50. Astro Dark: 21:11 - 05:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
95
91
86
84
75
65
56
35
23
25
26
28
49

Low Clouds (% Sky Obscured)

95
75
74
78
75
79
82
80
75
66
60
60
61
62
61
58
55
56
35
23
25
26
28
49

Medium Clouds (% Sky Obscured)

55
21
33
51
64
76
87
94
100
95
100
80
73
65
47
27
0
0
0
0
1
1
1
8

High Clouds (% Sky Obscured)

100
100
98
96
95
96
97
100
74
45
13
25
46
69
68
59
40
30
35
23
25
26
28
49

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
2
6
6
2
15
22
26
32
34
37
30
23
15
21
22
24
27
26
25
36
45
48
46

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
84
90
95
96
95
96
95
93
90
86
79
70
68
68
69
70
73
76
81
84
86
88
88

Pressure (mb)

1015
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1013
1013
1013
1013
1014
1014
1014
1015

Ozone (du)

276
277
278
279
280
280
280
282
284
285
287
289
292
303
309
311
313
315
317
319
321
321
322
322

Saturday 20

Waning Crescent 0%

06:31

19:04

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: 07:03, Set: 19:17, Transit: 13:10. Moon - Rise: 06:31, Set: 19:04. Civil Dark: 19:49 - 06:31. Nautical Dark: 20:28 - 05:52. Astro Dark: 21:08 - 05:12

Total Clouds (% Sky Obscured)

75
100
94
89
83
77
72
71
69
67
67
73
79
84
82
79
79
66
52
38
35
33
31
33

Low Clouds (% Sky Obscured)

57
52
56
58
60
64
65
71
69
67
66
69
72
76
73
71
69
59
48
38
35
33
31
33

Medium Clouds (% Sky Obscured)

15
22
15
9
3
2
1
0
0
0
0
8
16
25
28
26
25
16
7
1
1
1
1
17

High Clouds (% Sky Obscured)

75
85
57
28
0
0
0
0
0
0
0
0
0
0
5
10
16
11
6
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
8
7
7
6
6
7
8
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
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

39
29
36
37
33
33
31
31
43
49
55
57
60
64
62
60
65
64
58
46
45
42
44
53

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.3
0.3
0.3
0.3
0.3
0.4
0.3
0
0
0
0
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
84
83
81
80
78
80
79
78
80
81
80
78
76
73
72
68
66
68
72
74
80
84
90

Pressure (mb)

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

Ozone (du)

322
321
321
323
325
327
329
331
333
333
334
335
336
337
338
337
337
337
338
338
339
339
339
338

Sunday 21

New Moon 1%

07:42

19:15

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

Sun - Rise: 07:05, Set: 19:15, Transit: 13:10. Moon - Rise: 07:42, Set: 19:15. Civil Dark: 19:47 - 06:32. Nautical Dark: 20:26 - 05:54. Astro Dark: 21:06 - 05:14

Total Clouds (% Sky Obscured)

36
39
47
54
62
69
73
75
81
86
90
74
63
52
68
82
98
85
70
50

Low Clouds (% Sky Obscured)

36
39
45
52
59
59
58
55
65
73
80
66
55
43
48
54
60
55
51
47

Medium Clouds (% Sky Obscured)

34
39
34
27
22
28
32
37
49
63
77
56
41
23
22
11
3
5
6
8

High Clouds (% Sky Obscured)

0
0
0
0
0
11
18
25
34
43
40
26
19
10
30
53
74
66
54
42

ISS Passover

Visibility (miles)

8
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

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

Precipitation Probability (%)

55
54
55
51
26
45
44
26
43
41
22
31
31
27
37
48
56
52
54
60

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.2
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
5
4
4
4
4
4
4
5
5
6
6
7
8
12
11
10
10
10

Dew Point (°C)

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

Relative Humidity (%)

88
87
87
88
90
91
91
91
90
85
80
76
68
62
57
59
60
62
67
75

Pressure (mb)

1019
1019
1019
1019
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

339
340
340
340
340
340
339
338
337
336
335
334
333
331
330
329
327
325
324
323

Forecast for Upton, Cornwall, United Kingdom (50.54,-4.42)

Generated: 15/09/25 22:52:19. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00