Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 6

Waning Gibbous 98%

16:45

10:19

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
23 Bad
00 Bad

Sun - Rise: 07:58, Set: 15:44, Transit: 11:51. Moon - Rise: 16:45, Set: 10:19. Civil Dark: 16:26 - 07:16. Nautical Dark: 17:10 - 06:32. Astro Dark: 17:52 - 05:50

Total Clouds (% Sky Obscured)

100
99
100
100
100
100
85
100
100
100
100
100
100
91
93
100
92
97
92
89
84
86
89
79

Low Clouds (% Sky Obscured)

60
60
66
55
75
63
60
61
51
54
62
74
72
62
64
90
77
67
83
76
55
71
69
55

Medium Clouds (% Sky Obscured)

19
90
100
100
100
100
85
99
46
100
92
85
56
33
48
46
34
46
88
33
54
52
29
16

High Clouds (% Sky Obscured)

35
8
40
100
100
100
58
96
100
100
100
100
38
21
8
41
3
45
60
0
8
0
6
6

ISS Passover

Visibility (miles)

9
8
9
9
9
3
2
9
6
6
9
9
9
9
9
9
9
9
9
9
8
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
Light Rain
Light Rain
Light Rain
None
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

11
37
18
21
79
95
78
38
84
66
32
15
22
11
7
26
28
16
31
25
17
15
2
0

Precipitation Amount (mm)

0
0
0
0
0.6
1.6
0.6
0
0.8
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
88
85
84
84
90
93
87
85
85
90
85
83
81
77
81
84
83
81
87
85
81
81
82

Pressure (mb)

990
990
990
990
990
990
990
990
991
991
991
992
992
992
993
994
995
995
996
997
998
998
999
1000

Ozone (du)

297
297
298
296
294
292
288
287
287
285
283
284
284
284
283
287
284
286
287
286
283
281
277
276

Sunday 7

Waning Gibbous 93%

18:13

11:03

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 OK
22 Good
23 Good
00 OK

Sun - Rise: 07:59, Set: 15:44, Transit: 11:51. Moon - Rise: 18:13, Set: 11:03. Civil Dark: 16:25 - 07:17. Nautical Dark: 17:10 - 06:33. Astro Dark: 17:52 - 05:51

Total Clouds (% Sky Obscured)

97
62
68
81
61
100
88
97
100
100
100
100
100
100
100
100
100
98
93
83
16
0
13
28

Low Clouds (% Sky Obscured)

46
26
23
33
39
46
40
58
57
78
60
80
100
87
98
95
64
53
49
50
13
0
11
25

Medium Clouds (% Sky Obscured)

9
14
24
23
27
30
55
34
28
100
86
96
100
100
100
72
65
75
0
0
0
0
0
0

High Clouds (% Sky Obscured)

40
62
10
70
24
100
76
89
100
100
100
100
100
100
100
100
54
40
45
38
1
0
2
4

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
4
8
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
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
0
0
0
0
0
0
0
0
6
27
70
95
95
58
39
23
5
3
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.4
0.8
0.9
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
13
12
10
9
8
7
7
8
8
10
12
13
14
15
18
18
22
22
19
17
15
16
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
85
85
87
93
94
94
94
94
91
93
95
95
96
95
92
92
76
76
76
76
80
82
82

Pressure (mb)

1000
1001
1002
1002
1002
1002
1002
1002
1002
1002
1001
1000
998
997
996
996
995
996
997
999
1000
1001
1002
1003

Ozone (du)

280
281
280
280
281
280
279
278
278
276
277
278
278
279
281
287
294
299
306
310
309
306
304
304

Monday 8

Waning Gibbous 86%

19:44

11:31

01 OK
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
23 Bad
00 Bad

Sun - Rise: 08:00, Set: 15:43, Transit: 11:52. Moon - Rise: 19:44, Set: 11:31. Civil Dark: 16:25 - 07:19. Nautical Dark: 17:10 - 06:34. Astro Dark: 17:52 - 05:52

Total Clouds (% Sky Obscured)

43
69
77
96
100
100
100
99
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100

Low Clouds (% Sky Obscured)

35
56
56
54
62
65
60
62
64
65
63
52
56
41
36
41
38
39
43
53
55
57
59
61

Medium Clouds (% Sky Obscured)

4
40
48
33
68
78
92
95
100
100
98
62
34
30
43
48
43
30
19
55
55
60
60
73

High Clouds (% Sky Obscured)

27
60
60
86
100
100
100
92
100
100
100
100
100
100
100
100
66
74
81
98
99
99
100
100

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
5
3
3

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

Precipitation Probability (%)

0
0
0
0
0
0
1
7
4
1
1
0
1
18
13
29
50
21
13
3
49
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
1.1
1.4
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
90
88
88
85
84
81
82
84
84
86
83
84
84
86
91
93
93
95
96
95
96
95
95

Pressure (mb)

1004
1004
1005
1005
1005
1005
1005
1005
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1008
1008
1007
1007
1006
1006

Ozone (du)

303
303
305
307
310
314
317
318
320
323
325
330
330
331
335
332
330
328
325
322
317
309
305
302

Tuesday 9

Waning Gibbous 77%

21:11

11:49

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
23 Bad
00 Bad

Sun - Rise: 08:01, Set: 15:43, Transit: 11:52. Moon - Rise: 21:11, Set: 11:49. Civil Dark: 16:25 - 07:20. Nautical Dark: 17:09 - 06:35. Astro Dark: 17:51 - 05:53

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
92
89
87
87
89
82

Low Clouds (% Sky Obscured)

61
63
72
82
91
90
90
90
89
88
86
89
93
97
84
70
57
44
31
17
19
25
30
37

Medium Clouds (% Sky Obscured)

87
100
100
100
100
84
66
73
100
77
100
93
66
74
82
89
100
94
87
81
82
79
84
21

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
94
87
82
71
61
52
45
37
34
43

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

83
95
95
54
55
74
95
95
95
95
95
95
85
51
35
35
36
31
22
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.8
0.8
0
0
0.3
0.8
1
0.8
0.8
1
0.8
0.5
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
87
88
88
86
87
87
90
90
92
92
93
90
89
89
87
92
93
83
79
80
84
85
82

Pressure (mb)

1005
1004
1004
1003
1001
1001
1000
1000
999
999
998
998
998
997
997
998
998
999
1000
1001
1002
1003
1004
1005

Ozone (du)

299
292
293
291
292
293
292
290
289
292
291
289
288
287
288
287
285
286
289
294
295
298
298
299

Wednesday 10

Waning Gibbous 67%

22:33

12:02

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

Sun - Rise: 08:02, Set: 15:43, Transit: 11:53. Moon - Rise: 22:33, Set: 12:02. Civil Dark: 16:25 - 07:21. Nautical Dark: 17:09 - 06:36. Astro Dark: 17:51 - 05:54

Total Clouds (% Sky Obscured)

52
39
34
64
64
61
28
42
47
38
47
45
43
38
47
52
54
36
18
0
31
62
88
75

Low Clouds (% Sky Obscured)

43
39
34
39
36
38
28
40
47
38
47
45
43
38
47
52
54
36
18
0
2
4
6
16

Medium Clouds (% Sky Obscured)

11
2
1
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
18
27
29

High Clouds (% Sky Obscured)

12
4
3
46
45
40
0
0
0
0
0
0
0
0
0
0
0
0
0
0
18
33
45
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
0
0
0
0
0
0
0
0
0
1
1
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
6
6
6
6
6
5
5
5
6
6
6
6
6
6
6
5
5
5
5
5
5
5

Relative Humidity (%)

84
85
84
85
85
85
85
84
82
80
77
76
74
76
76
78
81
82
84
87
90
90
91
93

Pressure (mb)

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

Ozone (du)

299
299
301
304
307
311
316
318
320
325
326
326
323
319
315
313
311
309
310
311
311
310
309
308

Thursday 11

Third Quarter 57%

23:51

12:13

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
23 Bad
00 Bad

Sun - Rise: 08:03, Set: 15:43, Transit: 11:53. Moon - Rise: 23:51, Set: 12:13. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:09 - 06:37. Astro Dark: 17:52 - 05:55

Total Clouds (% Sky Obscured)

66
62
72
79
86
87
92
97
92
88
91
93
95
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

25
35
44
49
56
53
46
36
24
12
0
0
0
0
18
31
44
49
50
55
57
66
65
63

Medium Clouds (% Sky Obscured)

27
27
20
9
0
4
9
15
20
25
30
30
30
30
25
25
30
25
32
26
33
35
36
39

High Clouds (% Sky Obscured)

15
0
29
57
85
87
89
90
71
52
34
56
78
100
100
100
100
100
100
100
100
100
100
99

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
2
5
7
6
3
4
3
1
0
0
0
0
0
0
0
0
0
0
1
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
12
12
12
12
12
11
11
11
11
11
12
11
10
8
7
7
8
8
8
8
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
4
4
4
5
5
4
4
5
4
4
4
5
5
4
3
3
2
1
1
1
1
2
2

Dew Point (°C)

5
5
5
5
5
5
6
6
6
6
6
6
6
5
5
5
5
4
5
5
5
5
6
6

Relative Humidity (%)

93
91
91
93
94
94
94
94
93
90
87
84
82
82
84
84
87
88
90
90
90
90
91
91

Pressure (mb)

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

Ozone (du)

309
310
310
312
313
315
316
316
317
316
315
314
312
310
308
307
307
306
307
308
309
310
312
313

Friday 12

Waning Crescent 46%

01:05

12:22

Sun - Rise: 08:04, Set: 15:43, Transit: 11:54. Moon - Rise: 01:05, Set: 12:22. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:10 - 06:38. Astro Dark: 17:52 - 05:56

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 06/12/25 01:00:52. Forecast: 06/12/25 to 12/12/25. Timezone: UTC+0.00