Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

19:19

03:35

18 Good
19 Good
20 OK
21 OK
22 Bad
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

Sun - Rise: 06:00, Set: 20:04, Transit: 13:01. Moon - Rise: 19:19, Set: 03:35. Civil Dark: 20:41 - 05:24. Nautical Dark: 21:28 - 04:37. Astro Dark: 22:22 - 03:44

Total Clouds (% Sky Obscured)

12
13
14
43
36
32
32
61
80
100
100
100
100
100
100
100
100
100
100
95
95
90
94
93

Low Clouds (% Sky Obscured)

12
13
14
26
23
15
0
18
19
0
0
0
24
21
3
13
28
32
49
60
63
64
51
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
15
22
59
91
99
98
99
93
100
70
14
14
12
13

High Clouds (% Sky Obscured)

1
1
4
14
10
17
27
46
68
100
100
100
100
100
100
100
96
98
71
70
70
67
42
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
2
8
16
12
12
22
26
13
4
2
1
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
16
14
12
12
10
9
8
7
7
7
7
7
8
10
11
12
12
13
12
13
15
16
16

Chance of Frost

Temperature (°C)

20
19
18
17
17
17
17
17
17
17
17
17
17
18
19
19
20
21
21
21
22
22
22
21

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
75
83
88
89
90
90
92
90
89
89
89
90
86
77
70
63
57
53
56
52
57
64
71

Pressure (mb)

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

Ozone (du)

326
324
321
321
320
317
316
317
316
315
315
315
315
315
317
318
321
321
323
324
323
321
320
319

Wednesday 26

Waxing Gibbous 99%

19:35

04:53

18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK
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

Sun - Rise: 06:02, Set: 20:02, Transit: 13:01. Moon - Rise: 19:35, Set: 04:53. Civil Dark: 20:39 - 05:25. Nautical Dark: 21:25 - 04:39. Astro Dark: 22:19 - 03:47

Total Clouds (% Sky Obscured)

79
100
100
97
54
48
39
100
100
94
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

19
16
18
23
34
34
18
20
18
29
53
41
49
49
54
67
72
71
52
41
57
65
52
44

Medium Clouds (% Sky Obscured)

6
2
0
0
2
48
39
95
5
17
19
29
96
96
99
94
96
28
12
8
88
85
78
8

High Clouds (% Sky Obscured)

32
100
100
95
29
35
39
100
100
42
60
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
3
9
9
4
9
9
9
1
9
2
2

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain

Precipitation Probability (%)

2
1
0
0
0
0
2
0
0
0
1
15
44
57
41
47
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
1.1
1.2
1.4
0.8
4.2

Wind Speed/Direction (mph)

16
15
13
11
9
7
6
5
6
6
6
6
6
6
7
8
10
10
9
8
8
8
9
7

Chance of Frost

Temperature (°C)

20
20
19
18
18
17
17
17
16
17
17
17
18
19
19
20
20
20
21
21
21
22
22
22

Feels Like (°C)

17
17
17
16
17
17
17
17
17
17
17
18
18
20
21
21
21
21
21
21
21
21
21
23

Dew Point (°C)

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

Relative Humidity (%)

75
78
82
82
83
86
89
92
93
92
92
92
92
92
88
92
92
84
74
67
68
77
89
89

Pressure (mb)

1013
1013
1013
1013
1013
1013
1013
1012
1011
1011
1011
1010
1010
1010
1009
1009
1009
1009
1008
1008
1008
1007
1007
1007

Ozone (du)

319
318
317
317
316
315
316
316
316
316
317
317
317
316
318
319
319
322
324
323
324
325
321
327

Thursday 27

Waxing Gibbous 100%

19:47

06:12

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:04, Set: 20:00, Transit: 13:01. Moon - Rise: 19:47, Set: 06:12. Civil Dark: 20:37 - 05:27. Nautical Dark: 21:23 - 04:42. Astro Dark: 22:15 - 03:50

Total Clouds (% Sky Obscured)

45
100
85
100
91
97
90
64
70
80
89
84
97
100
100
100
84
100
99
99
97
96
97
97

Low Clouds (% Sky Obscured)

21
12
19
44
48
21
21
47
41
43
34
45
39
41
51
38
43
25
39
37
38
40
37
29

Medium Clouds (% Sky Obscured)

45
96
9
9
91
97
90
64
70
80
73
84
93
75
26
5
84
94
63
96
16
92
93
15

High Clouds (% Sky Obscured)

35
69
63
100
49
84
85
45
49
35
79
67
90
100
100
100
64
100
88
81
55
42
26
55

ISS Passover

Visibility (miles)

2
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

Ice pellet
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 (%)

76
33
28
20
9
0
0
0
0
0
0
0
0
0
0
0
11
29
28
19
12
7
10
9

Precipitation Amount (mm)

0.4
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
4
4
4
5
6
8
7
6
7
7
7
7
7
10
12
12
13
13
13
13
13
13
13

Chance of Frost

Temperature (°C)

20
20
19
18
18
18
17
16
16
15
15
15
14
15
16
17
18
20
21
21
22
23
23
23

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
77
81
82
81
78
83
83
85
85
84
84
86
84
80
73
62
54
48
43
41
40
49
50

Pressure (mb)

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

Ozone (du)

331
335
336
335
335
335
337
337
338
338
338
338
339
339
339
339
339
339
338
337
334
332
333
332

Friday 28

Full Moon 99%

19:57

07:31

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:06, Set: 19:57, Transit: 13:00. Moon - Rise: 19:57, Set: 07:31. Civil Dark: 20:34 - 05:29. Nautical Dark: 21:20 - 04:44. Astro Dark: 22:12 - 03:52

Total Clouds (% Sky Obscured)

91
84
88
83
74
62
56
54
51
52
68
84
100
100
100
100
100
100
100
100
98
100
85
68

Low Clouds (% Sky Obscured)

16
28
52
72
62
47
35
39
38
37
40
43
45
46
56
74
69
68
65
68
72
80
71
64

Medium Clouds (% Sky Obscured)

10
6
8
9
8
5
5
43
1
0
3
22
26
98
99
99
60
9
4
9
5
10
14
14

High Clouds (% Sky Obscured)

55
35
13
40
55
57
56
54
51
52
67
82
100
100
57
55
50
50
45
28
15
4
2
1

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
Very Light Rain
Very Light Rain

Precipitation Probability (%)

7
8
7
1
1
0
0
0
0
0
0
0
0
4
15
39
66
33
14
48
39
40
57
58

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
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

48
48
53
54
52
55
65
72
78
78
79
85
86
85
83
79
78
86
88
69
53
46
48
50

Pressure (mb)

1003
1003
1003
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1003
1003
1002
1002
1001
1002
1002

Ozone (du)

330
329
327
324
322
319
316
314
311
309
307
306
305
304
306
306
308
308
309
310
312
318
322
322

Saturday 29

Waning Gibbous 96%

20:07

08:51

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 06:07, Set: 19:55, Transit: 13:00. Moon - Rise: 20:07, Set: 08:51. Civil Dark: 20:32 - 05:31. Nautical Dark: 21:17 - 04:46. Astro Dark: 22:08 - 03:55

Total Clouds (% Sky Obscured)

57
57
53
58
57
62
61
65
56
74
58
59
49
100
100
100
91
79
69
77
87
100
91
82

Low Clouds (% Sky Obscured)

57
57
53
58
57
60
50
41
34
27
24
19
18
75
58
40
39
37
36
38
42
47
44
44

Medium Clouds (% Sky Obscured)

18
18
18
18
9
9
4
4
4
3
10
32
24
29
15
2
8
16
23
34
46
57
70
82

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
14
9
20
20
100
100
100
91
79
69
77
87
100
90
79

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

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

Precipitation Probability (%)

60
51
33
11
10
7
2
5
7
8
10
7
0
51
52
38
27
17
11
25
42
54
72
94

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
16
15
15
15
15
16
16
16
15
14
14
13
13
15
14
14
15
16
16
20
18
16
18

Dew Point (°C)

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

Relative Humidity (%)

51
57
62
66
75
78
82
85
89
89
87
89
89
86
78
71
64
57
51
47
47
46
47
56

Pressure (mb)

1002
1002
1003
1003
1004
1004
1005
1005
1005
1005
1005
1005
1005
1006
1004
1005
1005
1004
1004
1004
1003
1003
1002
1002

Ozone (du)

322
322
322
320
319
317
315
315
315
314
313
313
313
313
312
312
311
312
314
315
317
319
321
325

Sunday 30

Waning Gibbous 91%

20:17

10:13

18 Bad
19 Bad
20 Bad
21 OK
22 OK
23 OK
00 Good
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

Sun - Rise: 06:09, Set: 19:53, Transit: 13:00. Moon - Rise: 20:17, Set: 10:13. Civil Dark: 20:29 - 05:33. Nautical Dark: 21:14 - 04:48. Astro Dark: 22:05 - 03:58

Total Clouds (% Sky Obscured)

77
58
43
27
23
17
7
36
63
85
67
63
64
74
83
92
86
78
72
67
62
57
51
46

Low Clouds (% Sky Obscured)

44
43
35
27
20
11
2
9
16
26
33
43
53
64
75
85
77
68
55
51
47
45
35
27

Medium Clouds (% Sky Obscured)

77
58
32
0
0
0
0
0
0
5
20
35
50
42
34
27
22
18
17
16
14
11
12
13

High Clouds (% Sky Obscured)

73
49
23
0
1
2
3
24
38
65
49
32
22
15
7
0
0
0
0
2
5
9
7
5

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

Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
84
21
13
6
1
6
11
17
20
18
14
19
19
14
21
23
18
18
16
4
2
1

Precipitation Amount (mm)

0.9
0.8
0.5
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
11
12
13
15
14
14
14
14
15
15
16
16
17
18
19
20
20
21
21
21
20
19
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
20
13
14
15
15
14
15
11
11
10
11
11
10
10
10
10
10
10
10
14
14
13
14

Dew Point (°C)

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

Relative Humidity (%)

69
82
81
77
75
76
80
83
83
83
82
79
79
76
75
73
72
65
59
54
51
49
47
49

Pressure (mb)

1001
1001
1001
1001
1001
1001
1001
1001
1002
1002
1002
1002
1003
1003
1004
1005
1006
1007
1007
1008
1008
1009
1009
1010

Ozone (du)

329
332
334
335
337
338
340
341
342
343
345
346
348
350
347
345
342
340
337
335
333
331
330
331

Monday 31

Waning Gibbous 83%

20:29

11:38

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

Sun - Rise: 06:11, Set: 19:51, Transit: 12:59. Moon - Rise: 20:29, Set: 11:38. Civil Dark: 20:27 - 05:35. Nautical Dark: 21:12 - 04:50. Astro Dark: 22:02 - 04:00

Total Clouds (% Sky Obscured)

42
49
58
66
58
49
43
35
28
17
23
31
35
40
39
45
61
66
74

Low Clouds (% Sky Obscured)

21
19
18
18
13
6
0
4
8
12
14
14
15
10
6
4
13
22
37

Medium Clouds (% Sky Obscured)

14
17
21
21
14
6
0
0
0
0
2
5
7
12
18
25
41
53
63

High Clouds (% Sky Obscured)

3
5
5
9
20
33
43
32
16
0
0
0
2
3
8
5
5
5
5

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

16
14
11
9
7
8
9
9
9
9
8
8
8
8
10
11
13
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
54
59
65
71
74
75
78
79
81
84
86
88
92
83
75
70
61
55

Pressure (mb)

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

Ozone (du)

332
332
333
333
334
329
325
321
320
319
318
316
314
312
313
313
313
312
311

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

Generated: 25/08/26 18:13:36. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+1.00