Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 18

Waxing Crescent 5%

06:26

00:03

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 04:54, Set: 20:56, Transit: 12:56. Moon - Rise: 06:26, Set: 00:03. Civil Dark: 21:41 - 04:09. Nautical Dark: 22:45 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

71
75
83
97
60
96
83
73
73
96
93
64
84
90
98
89
95
95
96
98
100
100
100
100

Low Clouds (% Sky Obscured)

70
75
83
72
57
95
63
56
58
36
35
18
0
24
38
37
33
62
79
83
87
92
91
100

Medium Clouds (% Sky Obscured)

71
75
83
23
12
15
66
73
71
81
85
56
49
44
92
45
73
95
96
98
100
100
99
94

High Clouds (% Sky Obscured)

28
0
0
0
0
3
12
4
52
57
65
4
65
15
77
7
6
57
9
4
96
100
100
60

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

8
4
0
39
67
76
78
60
59
55
38
18
2
0
0
2
17
28
47
68
95
95
95
59

Precipitation Amount (mm)

0
0.7
0.2
0
0.4
0.4
0.5
0.2
0.3
0.2
0
0
0
0
0
0
0
0
0
0.3
0.9
1.1
1
0

Wind Speed/Direction (mph)

6
8
9
9
8
9
11
10
11
12
12
10
9
8
9
9
10
11
11
12
13
15
16
17

Chance of Frost

Temperature (°C)

9
9
10
11
10
13
13
13
14
13
13
13
11
10
9
9
8
8
8
8
9
9
9
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
83
83
87
70
70
80
71
80
82
86
88
91
95
95
95
96
95
95
96
95
95
95

Pressure (mb)

1010
1010
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1009
1008
1008
1007
1007

Ozone (du)

423
423
421
416
410
403
400
398
393
388
384
379
376
374
376
378
378
375
373
374
376
379
387
392

Tuesday 19

Waxing Crescent 12%

07:49

00:55

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 04:53, Set: 20:58, Transit: 12:56. Moon - Rise: 07:49, Set: 00:55. Civil Dark: 21:43 - 04:08. Nautical Dark: 22:48 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
100
100
100
96
94
92
88
86
90
100
82
90
80
92
97
100
94
78
63
79
90
77
77

Low Clouds (% Sky Obscured)

86
84
100
96
77
78
46
56
61
53
55
41
55
45
24
10
36
56
54
56
61
53
58
53

Medium Clouds (% Sky Obscured)

32
29
49
100
93
88
88
78
52
71
100
67
80
60
79
92
100
77
63
23
41
53
62
69

High Clouds (% Sky Obscured)

80
60
100
100
56
50
40
40
65
3
37
14
32
58
70
78
98
3
9
0
2
50
37
5

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

33
20
10
7
19
36
70
71
81
67
54
47
55
43
12
3
2
7
16
9
3
5
8
14

Precipitation Amount (mm)

0
0
0
0
0
0
0.4
0.4
0.5
0.3
0.2
0.2
0.4
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
5
7
8
9
12
14
13
12
13
11
11
11
9
8
7
7
6
6
6
6
7
7
9

Dew Point (°C)

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

Relative Humidity (%)

95
93
95
95
95
87
81
83
89
85
87
86
89
92
92
92
91
90
93
91
93
96
93
89

Pressure (mb)

1007
1006
1006
1006
1006
1005
1005
1005
1005
1005
1006
1007
1007
1008
1008
1009
1009
1010
1010
1010
1011
1011
1012
1012

Ozone (du)

391
389
386
387
389
388
384
382
383
385
385
390
391
389
393
397
397
397
401
394
389
385
379
376

Wednesday 20

Waxing Crescent 21%

No Rise

01:29

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 04:52, Set: 20:59, Transit: 12:56. Moon - Rise: No Rise, Set: 01:29. Civil Dark: 21:45 - 04:06. Nautical Dark: 22:51 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

69
92
70
62
89
61
85
97
96
99
74
100
61
75
67
70
52
50
83
100
100
99
99
94

Low Clouds (% Sky Obscured)

51
80
29
38
57
15
30
82
52
67
22
24
40
25
0
4
0
0
1
10
29
48
67
51

Medium Clouds (% Sky Obscured)

29
31
33
30
25
12
24
24
29
20
15
15
4
14
0
20
51
28
81
100
99
99
98
93

High Clouds (% Sky Obscured)

0
0
0
0
4
60
60
60
60
67
25
100
61
38
38
35
13
21
32
80
74
63
53
40

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
8
7
7
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 (%)

36
35
33
36
41
28
38
37
39
35
24
1
0
0
0
0
0
0
0
0
16
24
40
25

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
13
15
18
19
17
18
18
19
17
16
13
10
8
9
9
9
9
8
8
9
8
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
92
87
74
68
85
69
72
73
79
81
82
83
89
92
93
95
96
96
95
92
93
90
89

Pressure (mb)

1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1019
1019
1020
1021
1021
1022
1022
1022
1023
1023
1023
1023
1024
1024

Ozone (du)

382
383
377
370
364
362
357
352
349
348
346
346
346
345
345
344
342
341
341
341
342
342
342
341

Thursday 21

Waxing Crescent 31%

09:20

01:50

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 OK

Sun - Rise: 04:50, Set: 21:01, Transit: 12:56. Moon - Rise: 09:20, Set: 01:50. Civil Dark: 21:47 - 04:04. Nautical Dark: 22:53 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

88
84
90
61
86
95
95
95
95
95
96
97
95
100
98
97
95
91
49
40
45
50
49
37

Low Clouds (% Sky Obscured)

61
58
69
56
81
87
86
84
64
45
25
21
21
24
16
8
0
1
3
4
2
1
0
0

Medium Clouds (% Sky Obscured)

70
55
56
20
18
21
26
55
38
13
4
7
10
10
17
33
48
46
41
40
35
32
25
16

High Clouds (% Sky Obscured)

25
10
8
0
1
11
7
20
50
69
81
57
79
100
97
94
92
74
17
0
10
22
33
22

ISS Passover

Visibility (miles)

9
9
9
9
9
9
6
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

17
2
1
1
14
30
23
17
13
12
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
81
82
71
69
79
81
84
80
82
84
82
85
92
90
92
93
93
93
93
92
89
87

Pressure (mb)

1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1025
1025
1026
1026
1026

Ozone (du)

341
343
342
344
345
344
343
343
342
341
339
338
339
338
339
341
344
345
345
343
343
341
340
339

Friday 22

Waxing Crescent 42%

10:50

02:06

08 OK
09 Good
10 Good
11 Good
12 Good
13 Good
14 OK
15 OK
16 OK
17 OK
18 OK
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

Sun - Rise: 04:49, Set: 21:02, Transit: 12:56. Moon - Rise: 10:50, Set: 02:06. Civil Dark: 21:48 - 04:03. Nautical Dark: 22:56 - 02:54. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

24
10
10
9
6
11
16
22
23
21
34
70
73
74
78
88
97
97
94
95
81
71
72
83

Low Clouds (% Sky Obscured)

0
0
1
0
0
9
16
22
18
9
0
8
4
0
0
0
0
11
22
28
26
23
20
28

Medium Clouds (% Sky Obscured)

9
3
3
0
0
0
0
0
5
10
16
41
61
74
63
47
32
29
26
29
27
22
14
17

High Clouds (% Sky Obscured)

14
7
7
6
5
4
3
2
4
1
9
39
49
60
59
58
57
60
66
77
66
51
35
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
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
12
39
64
57
47
29
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.3
0
0
0

Wind Speed/Direction (mph)

9
10
11
12
13
14
14
13
13
11
10
9
9
9
9
8
7
6
6
6
6
5
6
6

Chance of Frost

Temperature (°C)

16
18
20
22
23
24
25
25
25
25
25
24
21
19
18
17
16
16
15
15
14
15
15
16

Feels Like (°C)

16
18
20
21
23
24
25
25
25
26
27
26
24
23
22
21
21
19
16
16
15
16
15
14

Dew Point (°C)

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

Relative Humidity (%)

82
75
71
69
65
62
62
61
61
66
69
75
80
86
92
93
93
92
93
92
92
89
87
85

Pressure (mb)

1026
1026
1026
1025
1025
1024
1024
1023
1023
1023
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024

Ozone (du)

338
337
336
334
334
335
337
338
338
337
336
336
335
334
333
333
334
334
334
333
333
333
334
334

Saturday 23

First Quarter 53%

12:15

02:17

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 OK
23 OK
00 Good
01 Good
02 OK
03 OK
04 OK
05 OK
06 OK
07 OK

Sun - Rise: 04:48, Set: 21:04, Transit: 12:56. Moon - Rise: 12:15, Set: 02:17. Civil Dark: 21:50 - 04:01. Nautical Dark: 22:59 - 02:52. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

92
100
96
95
92
88
93
96
93
90
89
67
39
12
15
13
5
10
17
24
23
19
15
10

Low Clouds (% Sky Obscured)

33
40
36
34
33
39
43
44
47
52
57
39
24
12
10
7
4
10
17
24
23
19
15
10

Medium Clouds (% Sky Obscured)

22
27
29
32
29
41
56
70
47
26
1
1
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

78
100
80
63
45
45
45
45
45
41
41
48
39
12
15
13
3
3
3
2
2
3
3
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
5
2
5
7
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

18
0
0
0
0
5
12
3
39
50
49
48
42
30
25
18
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
18
19
20
21
22
23
23
23
22
20
19
18
16
15
14
13
13
13
12
12
13
13
14

Feels Like (°C)

16
16
16
16
17
17
24
24
24
25
26
27
18
17
17
16
15
15
13
13
13
12
13
12

Dew Point (°C)

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

Relative Humidity (%)

78
72
67
65
64
62
64
65
66
74
82
92
93
93
95
95
95
96
95
96
96
95
93
93

Pressure (mb)

1024
1025
1025
1025
1026
1026
1026
1026
1026
1027
1027
1028
1028
1028
1029
1029
1029
1029
1030
1030
1030
1030
1030
1031

Ozone (du)

336
337
339
341
343
346
346
347
347
345
343
340
340
339
338
338
338
337
336
335
334
333
332
331

Sunday 24

Waxing Gibbous 64%

13:36

02:27

08 OK
09 Good
10 OK
11 OK
12 OK
13 OK
14 OK
15 Good
16 OK
17 Good
18 Good
19 Good
20 Good
21 Good
22 Good
23 Good
00 OK

Sun - Rise: 04:47, Set: 21:05, Transit: 12:56. Moon - Rise: 13:36, Set: 02:27. Civil Dark: 21:52 - 04:00. Nautical Dark: 23:01 - 02:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

6
1
8
16
23
17
7
0
0
0
0
0
0
0
4
8
12

Low Clouds (% Sky Obscured)

5
0
5
11
16
11
5
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

2
1
3
5
7
5
2
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

7
4
1
1
1
1
1
2
2
4
7
9
9
9
9
9
9

Fog (%)

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

Precipitation Probability (%)

0
0
0
1
2
4
6
0
5
3
1
2
2
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
85
81
78
75
71
73
73
72
76
80
83
86
87
89
89
89

Pressure (mb)

1031
1031
1031
1032
1032
1032
1031
1031
1031
1031
1031
1031
1031
1032
1032
1032
1032

Ozone (du)

330
328
327
326
325
325
325
325
325
326
326
326
326
326
326
326
326

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

Generated: 18/05/26 08:18:42. Forecast: 18/05/26 to 24/05/26. Timezone: UTC+1.00