Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 20%

02:35

18:03

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
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:55, Set: 19:22, Transit: 13:08. Moon - Rise: 02:35, Set: 18:03. Civil Dark: 19:55 - 06:22. Nautical Dark: 20:34 - 05:43. Astro Dark: 21:15 - 05:02

Total Clouds (% Sky Obscured)

97
92
88
100
100
100
100
100
94
90
74
69
73
76
98
93
94
93
92
97
89
83
75
69

Low Clouds (% Sky Obscured)

65
80
79
100
100
100
100
100
87
85
74
69
70
72
95
83
85
84
86
85
76
73
72
69

Medium Clouds (% Sky Obscured)

0
26
38
37
43
45
49
40
29
31
0
0
16
3
20
26
15
27
25
29
19
5
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
7
7
7
6
9
9
9
9
2
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
6
9
6
7
11
14
11
21
9
9
7
25
24
8
5
8
9
10
7
3
8
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
90
90
90
88
86
85
88
90
92
95
95
95
95
96
95
95
93
95
96
88
89
88
88

Pressure (mb)

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

Ozone (du)

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

Thursday 18

Waning Crescent 12%

03:56

18:23

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
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:56, Set: 19:20, Transit: 13:07. Moon - Rise: 03:56, Set: 18:23. Civil Dark: 19:53 - 06:24. Nautical Dark: 20:32 - 05:45. Astro Dark: 21:13 - 05:04

Total Clouds (% Sky Obscured)

62
57
79
82
100
100
89
90
73
66
65
67
67
65
74
84
70
73
88
83
65
77
68
55

Low Clouds (% Sky Obscured)

62
57
70
60
75
56
59
69
53
37
33
67
51
65
63
77
70
62
68
66
62
64
47
34

Medium Clouds (% Sky Obscured)

2
4
19
43
20
18
12
13
10
32
47
10
14
4
6
2
2
2
1
0
0
0
1
1

High Clouds (% Sky Obscured)

0
0
20
25
100
100
60
45
45
46
41
18
35
17
37
30
17
53
61
54
32
30
40
30

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
1
0
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
15
16
17
17
17
16
15
14
11
9
7
6
5
5
5
5
5
4
4
4
4
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
77
75
74
74
73
71
73
76
84
88
95
96
96
96
96
96
96
96
96
96
98
96
96

Pressure (mb)

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

Ozone (du)

263
262
262
261
261
262
262
262
261
261
260
259
259
260
261
262
261
260
260
261
261
261
261
261

Friday 19

Waning Crescent 6%

05:13

18:38

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

Sun - Rise: 06:58, Set: 19:18, Transit: 13:07. Moon - Rise: 05:13, Set: 18:38. Civil Dark: 19:50 - 06:25. Nautical Dark: 20:29 - 05:46. Astro Dark: 21:10 - 05:06

Total Clouds (% Sky Obscured)

59
28
54
67
64
56
41
57
39
26
26
38
50
58
74
79
84
92
91
90
100
97
100
99

Low Clouds (% Sky Obscured)

23
4
5
30
38
36
28
30
28
17
22
38
50
57
56
54
53
55
57
54
54
62
75
85

Medium Clouds (% Sky Obscured)

3
5
3
0
2
2
2
3
0
0
0
0
0
1
0
16
0
3
17
7
31
27
40
73

High Clouds (% Sky Obscured)

30
20
51
56
37
16
15
30
17
12
2
2
4
6
16
25
41
71
85
82
99
96
100
94

ISS Passover

Visibility (miles)

9
9
9
9
7
7
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
1
1
1
1
1
1
1
1

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
2
5
4
20
42

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)

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

Chance of Frost

Temperature (°C)

17
18
20
20
21
21
22
22
21
19
17
15
15
14
14
13
13
13
13
13
14
13
14
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
82
75
68
63
59
53
51
55
67
77
83
83
84
84
86
87
89
90
92
95
96
98
96

Pressure (mb)

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

Ozone (du)

261
261
260
260
260
261
262
265
266
266
266
266
266
266
265
267
267
268
268
267
268
268
268
270

Saturday 20

Waning Crescent 2%

06:27

18:50

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

Sun - Rise: 07:00, Set: 19:16, Transit: 13:07. Moon - Rise: 06:27, Set: 18:50. Civil Dark: 19:48 - 06:27. Nautical Dark: 20:27 - 05:48. Astro Dark: 21:07 - 05:08

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
86
73
59
37
26
23
21
19
20
21
22
24
31
41
47
57
57

Low Clouds (% Sky Obscured)

94
81
84
89
73
58
45
42
39
41
34
26
23
21
19
20
21
22
22
28
36
42
57
57

Medium Clouds (% Sky Obscured)

95
100
100
100
82
67
50
8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

97
100
100
100
100
100
100
77
52
25
2
2
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
7
9
9
8
5
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

None
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

59
95
95
95
95
91
51
43
47
15
5
4
2
7
7
4
8
12
5
12
14
9
17
17

Precipitation Amount (mm)

0
0.6
1.7
3
1.5
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
78
74
85
86
87
90
89
92
92
90
90
93
95
93
93
93
95
96
95
93
95
88

Pressure (mb)

1011
1010
1010
1010
1009
1009
1009
1009
1008
1008
1009
1010
1010
1010
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012

Ozone (du)

271
271
272
271
270
270
269
272
276
278
280
282
283
287
290
294
295
295
296
297
298
302
305
310

Sunday 21

New Moon 0%

07:39

19:01

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
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 07:01, Set: 19:13, Transit: 13:06. Moon - Rise: 07:39, Set: 19:01. Civil Dark: 19:46 - 06:28. Nautical Dark: 20:25 - 05:50. Astro Dark: 21:05 - 05:10

Total Clouds (% Sky Obscured)

57
66
72
78
73
66
60
59
58
58
75
76
76
73
65
60
59
62
68
77
87
93
84
76

Low Clouds (% Sky Obscured)

56
59
58
58
52
47
40
39
38
38
46
46
47
35
27
16
21
31
47
46
48
46
43
39

Medium Clouds (% Sky Obscured)

0
13
23
31
29
27
21
20
24
29
26
27
29
34
39
44
58
62
68
77
84
84
64
45

High Clouds (% Sky Obscured)

0
0
0
0
4
9
14
11
8
5
0
1
1
0
0
0
0
0
1
1
1
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
4
9
5
6
7
8
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

19
23
20
21
28
43
62
73
81
94
55
51
46
39
32
19
31
29
9
19
18
3
5
4

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.4
0.4
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
7
7
8
9
7
7
6
5
4
4
12
12
13
13
13
13
13
13
13
14
15
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
12
12
13
13
13
14
13
13
14
13
12
11
11
10
9
9
6
5
4
4
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

83
75
68
60
58
61
60
72
78
80
83
84
87
87
87
87
87
85
82
80
80
78
77
74

Pressure (mb)

1012
1013
1013
1013
1013
1013
1013
1014
1014
1015
1015
1017
1018
1019
1020
1020
1020
1021
1021
1021
1022
1022
1023
1023

Ozone (du)

313
315
316
316
315
315
315
315
316
317
317
319
320
321
321
322
322
322
322
322
322
321
321
321

Monday 22

Waxing Crescent 1%

08:50

19:12

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

Sun - Rise: 07:03, Set: 19:11, Transit: 13:06. Moon - Rise: 08:50, Set: 19:12. Civil Dark: 19:44 - 06:30. Nautical Dark: 20:22 - 05:51. Astro Dark: 21:02 - 05:11

Total Clouds (% Sky Obscured)

69
71
70
73
70
64
54
43
35
26
19
13
8
22
35
46
46
44
46
63
74
85
94
95

Low Clouds (% Sky Obscured)

36
41
44
47
45
48
44
35
21
13
8
4
0
6
13
18
19
22
26
31
33
36
41
44

Medium Clouds (% Sky Obscured)

28
22
17
13
9
5
0
0
0
0
2
5
8
11
14
16
17
20
22
23
27
30
31
31

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
2
2
2
13
25
37
25
13
1
27
48
71
62
66

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 (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

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
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
10
14

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
17
17
17
17
16
16
16
13
11
9
9
10
11
11
11
11
12
12
13
12
13
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
4
5
5
6
8
8
8
9
9
11
7
8
8
7
7
6
4
5
6
6
5
5
7

Dew Point (°C)

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

Relative Humidity (%)

72
71
66
62
59
55
52
50
54
58
63
67
72
77
78
78
81
79
81
81
84
87
91
84

Pressure (mb)

1024
1024
1024
1024
1025
1024
1024
1024
1024
1024
1024
1025
1025
1026
1026
1025
1025
1025
1025
1024
1024
1023
1023
1023

Ozone (du)

321
321
320
319
318
316
314
313
311
310
309
308
308
307
306
305
304
304
304
304
304
304
304
304

Tuesday 23

Waxing Crescent 3%

No Rise

19:23

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: 07:04, Set: 19:09, Transit: 13:06. Moon - Rise: No Rise, Set: 19:23. Civil Dark: 19:41 - 06:32. Nautical Dark: 20:20 - 05:53. Astro Dark: 21:00 - 05:13

Total Clouds (% Sky Obscured)

96
94
93
93
94
93
96
94
93
91
91
89
90
90
91
92

Low Clouds (% Sky Obscured)

47
50
54
59
72
86
96
94
93
91
88
83
80
81
82
83

Medium Clouds (% Sky Obscured)

36
53
53
53
48
43
37
33
36
39
43
43
47
32
17
1

High Clouds (% Sky Obscured)

81
81
85
90
60
30
0
0
1
1
7
21
36
41
38
36

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Precipitation Type

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

Precipitation Probability (%)

11
34
52
67
81
79
67
65
56
44
36
32
31
23
18
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

15
16
16
15
15
15
15
15
13
11
9
8
7
6
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
73
69
67
64
67
69
73
78
82
89
89
89
88
86
84

Pressure (mb)

1022
1022
1022
1021
1021
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

304
304
303
303
303
302
301
300
299
299
298
298
298
298
298
298

Welcome to Clear Outside

Forecast for Alphington, Devon, United Kingdom (50.70,-3.52)

Generated: 17/09/25 09:00:51. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+1.00