Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

23:29

17:32

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: 06:38, Set: 19:13, Transit: 12:55. Moon - Rise: 23:29, Set: 17:32. Civil Dark: 19:46 - 06:04. Nautical Dark: 20:27 - 05:24. Astro Dark: 21:10 - 04:41

Total Clouds (% Sky Obscured)

76
71
71
67
52
60
60
58
62
53
57
47
63
100
98
93
90
100
100
77
76
100
100
100

Low Clouds (% Sky Obscured)

53
54
58
50
49
50
53
56
53
48
53
47
52
41
78
35
0
23
29
0
0
0
38
5

Medium Clouds (% Sky Obscured)

2
0
0
0
0
0
0
2
5
0
0
0
0
12
21
33
35
39
26
23
30
62
66
62

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
3
57
51
82
88
100
100
58
55
82
84
82

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
3
5
0
0
0
0
0
0
0
0
0
0
0
0
3
0
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)

18
18
17
17
19
18
18
19
18
18
18
19
19
17
16
16
18
17
14
13
11
9
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
66
63
65
66
64
64
63
62
64
65
63
60
60
57
51
45
45
49
54
57
66
70
74

Pressure (mb)

1008
1009
1010
1010
1011
1011
1012
1012
1013
1014
1015
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1018
1018
1018

Ozone (du)

310
310
307
310
304
303
307
304
302
302
300
298
294
293
288
285
281
279
277
273
271
268
266
265

Tuesday 16

Waning Crescent 20%

00:51

17:57

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: 06:40, Set: 19:10, Transit: 12:55. Moon - Rise: 00:51, Set: 17:57. Civil Dark: 19:44 - 06:06. Nautical Dark: 20:25 - 05:25. Astro Dark: 21:07 - 04:43

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
89
75
71
43
60
100
97
82
57
59
60
56

Low Clouds (% Sky Obscured)

39
72
78
83
81
80
88
86
90
100
100
100
88
74
57
40
50
32
25
35
43
51
60
52

Medium Clouds (% Sky Obscured)

41
89
97
100
100
100
100
100
100
90
85
71
40
30
57
20
32
56
73
58
51
34
2
9

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
31
1
4
0
0
0
0
0
0
2
65
60
42
3
14
0
14

ISS Passover

Visibility (miles)

9
9
9
9
9
9
7
7
3
6
7
5
4
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Moderate Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

45
95
95
95
95
95
95
95
95
84
69
59
50
14
5
18
0
0
0
0
2
6
8
0

Precipitation Amount (mm)

0
0.8
1.4
1.4
1
2
3.4
2.4
3.1
0.3
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
13
12
12
12
13
13
13
14
15
16
16
17
18
19
21
22
21
20
18
17
16
16
16

Feels Like (°C)

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

Dew Point (°C)

9
10
9
10
10
11
11
12
13
13
14
15
16
16
17
20
20
19
18
17
16
15
14
14

Relative Humidity (%)

79
80
80
83
86
89
89
90
93
92
87
90
92
90
91
91
91
86
88
89
89
90
90
90

Pressure (mb)

1018
1018
1018
1017
1016
1015
1015
1013
1013
1012
1012
1012
1012
1011
1011
1011
1012
1012
1012
1012
1013
1013
1014
1014

Ozone (du)

264
262
261
260
258
257
257
257
257
259
258
258
258
261
264
267
267
267
267
266
265
264
264
262

Wednesday 17

Waning Crescent 12%

02:15

18:15

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:42, Set: 19:08, Transit: 12:55. Moon - Rise: 02:15, Set: 18:15. Civil Dark: 19:42 - 06:08. Nautical Dark: 20:22 - 05:27. Astro Dark: 21:05 - 04:45

Total Clouds (% Sky Obscured)

62
55
67
81
65
50
84
98
78
57
83
44
70
51
62
55
52
74
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

48
53
51
60
51
47
49
43
37
46
81
35
70
51
62
55
41
51
38
42
36
28
19
21

Medium Clouds (% Sky Obscured)

20
2
18
28
12
0
30
52
43
26
21
7
1
0
7
11
12
18
5
11
21
30
43
74

High Clouds (% Sky Obscured)

9
7
47
32
52
29
41
4
6
3
33
1
5
3
0
5
4
41
99
100
100
100
100
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
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
2
1
0
0
2
0
0
0
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)

15
14
13
13
13
13
13
13
13
14
14
15
17
20
19
19
18
17
16
14
13
13
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
90
90
90
90
89
87
90
90
83
78
74
71
67
62
55
52
55
59
64
70
76
80
83

Pressure (mb)

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

Ozone (du)

261
259
259
260
261
260
260
260
261
261
261
261
261
261
261
260
259
258
256
256
256
256
257
257

Thursday 18

Waning Crescent 6%

03:38

18:28

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 OK
16 OK
17 Bad
18 Bad
19 OK
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:43, Set: 19:05, Transit: 12:54. Moon - Rise: 03:38, Set: 18:28. Civil Dark: 19:39 - 06:09. Nautical Dark: 20:20 - 05:29. Astro Dark: 21:02 - 04:47

Total Clouds (% Sky Obscured)

100
100
100
100
100
96
82
100
92
89
88
84
83
78
71
62
34
29
51
49
47
79
99
75

Low Clouds (% Sky Obscured)

23
27
29
31
38
40
43
45
42
40
33
35
40
43
40
38
34
22
11
2
2
1
0
0

Medium Clouds (% Sky Obscured)

59
100
97
94
88
66
22
2
2
2
28
38
50
55
52
25
6
5
2
0
3
6
9
58

High Clouds (% Sky Obscured)

81
72
80
89
100
88
82
100
83
65
48
40
31
6
22
21
6
9
38
34
43
78
98
74

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
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)

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

Chance of Frost

Temperature (°C)

17
17
17
16
16
16
16
15
15
16
18
20
21
22
24
25
25
25
24
23
21
20
19
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
86
86
86
86
87
92
92
87
79
70
59
51
46
39
39
41
44
49
56
62
65
72

Pressure (mb)

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

Ozone (du)

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

Friday 19

Waning Crescent 2%

04:57

18:38

23 Bad
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
20 Bad
21 Bad
22 Bad

Sun - Rise: 06:45, Set: 19:03, Transit: 12:54. Moon - Rise: 04:57, Set: 18:38. Civil Dark: 19:37 - 06:11. Nautical Dark: 20:17 - 05:31. Astro Dark: 20:59 - 04:49

Total Clouds (% Sky Obscured)

54
30
54
77
100
100
96
100
100
100
100
98
95
92
86
80
73
73
78
80
82
94
100
100

Low Clouds (% Sky Obscured)

0
0
9
15
23
17
13
18
30
42
44
53
66
76
66
58
47
42
37
32
21
11
0
0

Medium Clouds (% Sky Obscured)

54
30
46
38
40
28
30
76
65
56
38
52
54
56
62
73
73
73
63
54
57
58
45
23

High Clouds (% Sky Obscured)

45
18
49
76
99
100
93
84
93
100
100
90
80
65
50
34
22
25
40
53
55
57
55
55

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
18
12
3
1
10
13
9
28
32
22
13
11
1
10
15
17
19
18
9
9
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
83
86
87
86
82
83
80
79
77
69
64
61
60
58
55
54
55
57
59
64
71
78

Pressure (mb)

1014
1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1011
1011
1010
1010
1010
1011
1011
1011
1012
1012

Ozone (du)

264
264
264
265
266
265
267
267
269
269
270
269
269
271
272
275
278
282
288
294
300
303
305
308

Saturday 20

Waning Crescent 0%

06:12

18:48

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: 06:46, Set: 19:01, Transit: 12:54. Moon - Rise: 06:12, Set: 18:48. Civil Dark: 19:34 - 06:13. Nautical Dark: 20:15 - 05:33. Astro Dark: 20:56 - 04:51

Total Clouds (% Sky Obscured)

100
100
96
89
91
89
90
91
95
98
100
97
95
94
93
94
93
86
75
57
62
69
80
58

Low Clouds (% Sky Obscured)

0
0
7
15
24
31
38
44
53
61
71
68
62
57
60
66
72
52
33
14
34
45
57
41

Medium Clouds (% Sky Obscured)

12
0
14
29
57
59
52
44
37
24
25
26
36
43
54
62
69
66
49
30
60
64
69
47

High Clouds (% Sky Obscured)

55
50
50
55
60
70
80
85
95
95
95
84
69
58
39
18
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
7
6
5
5
4
4
5
5
6
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
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None

Precipitation Probability (%)

0
0
0
1
0
6
7
7
21
32
44
50
60
69
77
84
82
71
67
54
39
32
30
29

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.6
0.6
0.7
0.5
0.3
0.3
0.2
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
81
83
81
77
74
76
77
77
80
83
84
84
83
83
82
80
78
75
73
69
71
72
75

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1015
1015
1015
1016
1016
1016
1017
1017
1018

Ozone (du)

311
314
317
318
320
322
321
320
319
320
322
323
323
324
325
325
326
326
328
329
331
332
334
335

Sunday 21

New Moon 1%

07:26

18:57

23 Bad
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

Sun - Rise: 06:48, Set: 18:58, Transit: 12:53. Moon - Rise: 07:26, Set: 18:57. Civil Dark: 19:32 - 06:14. Nautical Dark: 20:12 - 05:34. Astro Dark: 20:54 - 04:53

Total Clouds (% Sky Obscured)

37
15
37
58
79
80
80
77
74
74
74
79
85
91
87
84
81
85
92
98

Low Clouds (% Sky Obscured)

25
9
31
54
76
79
80
77
74
71
64
66
67
69
72
75
78
62
48
34

Medium Clouds (% Sky Obscured)

26
6
6
6
6
4
1
0
4
6
8
8
14
21
27
29
45
46
52
53

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

29
23
23
13
1
6
7
5
6
6
3
16
18
21
25
31
40
39
36
22

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
4
6
6
6
7
7
7
7
8
9
10
11
11
13
13
13
14
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
8
8
8
8
7
8
8
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

77
77
80
81
85
87
87
88
88
84
79
75
69
62
58
60
64
67
67
68

Pressure (mb)

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

Ozone (du)

335
336
336
336
336
336
335
335
334
334
333
333
332
332
331
329
327
325
324
324

Forecast for Blunham, Central Bedfordshire, United Kingdom (52.15,-0.32)

Generated: 15/09/25 23:34:11. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+1.00