Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 30

Waxing Gibbous 100%

21:09

03:57

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

Sun - Rise: 04:40, Set: 21:13, Transit: 12:57. Moon - Rise: 21:09, Set: 03:57. Civil Dark: 22:01 - 03:52. Nautical Dark: 23:16 - 02:36. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
20
0
20
0
0
0
0
39
53
63
100
100
69
65
57
74
57
100
88
91
81
82
94

Low Clouds (% Sky Obscured)

0
1
12
12
29
30
28
6
28
0
26
21
0
0
0
0
53
37
38
50
81
58
56
60

Medium Clouds (% Sky Obscured)

0
0
4
4
4
7
0
1
39
5
18
59
74
21
65
57
62
57
23
15
26
22
20
21

High Clouds (% Sky Obscured)

100
100
100
90
33
35
100
100
39
53
63
100
100
69
0
0
0
50
100
87
70
70
67
86

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
-
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

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
10
33
16
0
3
3
2
1
0
0
15
4

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)

8
10
11
11
13
15
15
12
11
7
6
3
4
7
7
7
6
7
9
9
11
12
12
12

Chance of Frost

Temperature (°C)

22
22
24
24
25
25
23
20
20
18
18
15
15
14
14
14
14
13
14
14
16
17
18
18

Feels Like (°C)

22
22
24
23
23
22
22
19
19
18
18
15
14
14
13
12
12
11
11
12
13
14
15
15

Dew Point (°C)

13
14
13
13
13
12
12
13
17
16
15
12
12
12
12
11
9
8
8
11
12
12
13
11

Relative Humidity (%)

57
57
48
49
47
45
50
61
82
86
85
80
82
87
86
82
73
72
68
79
79
75
71
65

Pressure (mb)

1020
1020
1019
1019
1018
1018
1017
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

334
335
335
336
337
344
344
340
339
342
344
348
351
357
367
370
366
356
353
354
353
354
356
357

Sunday 31

Full Moon 99%

22:16

04:34

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

Sun - Rise: 04:40, Set: 21:14, Transit: 12:57. Moon - Rise: 22:16, Set: 04:34. Civil Dark: 22:03 - 03:51. Nautical Dark: 23:19 - 02:34. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
72
65
61
71
41
63
25
33
19
11
12
1
0
34
29
22
54
86
97
96
100
100
100

Low Clouds (% Sky Obscured)

51
23
40
48
52
41
25
0
0
0
0
0
0
0
0
0
0
11
38
39
0
0
20
31

Medium Clouds (% Sky Obscured)

33
23
22
9
25
19
21
16
18
11
8
9
1
0
23
20
0
14
21
56
47
68
100
100

High Clouds (% Sky Obscured)

86
68
48
20
3
4
0
0
0
0
0
0
0
0
4
7
19
34
67
94
95
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
8
9
5
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 (%)

4
13
19
30
28
33
22
12
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

12
12
12
12
12
11
12
10
8
6
5
5
5
3
3
4
5
5
5
6
7
9
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
69
61
59
78
77
77
81
82
83
87
87
88
87
87
88
90
93
93
90
84
79
72
68

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1015
1016
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

358
361
362
363
363
365
369
371
365
358
353
348
347
345
344
344
344
342
341
341
340
340
341
341

Monday 1

Waning Gibbous 97%

23:11

05:25

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
09 Bad
10 Bad
11 Bad

Sun - Rise: 04:39, Set: 21:16, Transit: 12:58. Moon - Rise: 23:11, Set: 05:25. Civil Dark: 22:04 - 03:50. Nautical Dark: 23:21 - 02:32. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
92
97
100
100
100
100
100
100
100
100
100
100
98
91

Low Clouds (% Sky Obscured)

45
47
83
63
88
93
87
89
98
84
71
78
76
73
70
82
79
72
64
68
62
80
58
60

Medium Clouds (% Sky Obscured)

100
100
100
94
97
90
99
100
100
100
86
93
97
100
100
100
88
100
85
84
74
11
19
22

High Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
100
60
60
100
100
100
100
100
94
100
100
100
79
38
47

ISS Passover

Visibility (miles)

9
9
9
9
9
8
8
9
9
9
9
9
2
5
8
9
7
8
3
4
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
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
Very Light Rain
None
None
None
None
None
Light Rain

Precipitation Probability (%)

2
5
22
37
67
78
62
64
60
62
77
95
95
95
52
38
42
55
48
46
34
27
37
94

Precipitation Amount (mm)

0
0
0
0
0.3
0.5
0.2
0.2
0.2
0.3
0.2
1.8
1.9
0.8
0
0
0
0.2
0
0
0
0
0
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
82
78
72
63
76
95
95
95
92
95
95
96
96
98
98
98
96
100
98
98
95
93
82

Pressure (mb)

1013
1013
1012
1011
1011
1010
1009
1009
1008
1008
1007
1006
1006
1005
1005
1004
1004
1003
1003
1003
1003
1003
1003
1003

Ozone (du)

339
338
337
338
337
339
339
340
343
345
345
347
348
350
350
353
356
360
363
366
369
379
384
382

Tuesday 2

Waning Gibbous 93%

23:52

06:29

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

Sun - Rise: 04:38, Set: 21:17, Transit: 12:58. Moon - Rise: 23:52, Set: 06:29. Civil Dark: 22:06 - 03:49. Nautical Dark: 23:23 - 02:30. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

87
91
95
100
98
91
100
85
69
31
25
26
30
35
40
46
82
80
53
79
81
83
90
95

Low Clouds (% Sky Obscured)

67
59
58
60
48
36
24
28
32
31
25
26
29
35
40
46
53
49
44
48
50
48
46
47

Medium Clouds (% Sky Obscured)

15
29
41
85
51
43
48
61
48
3
4
9
13
14
20
21
19
16
14
15
49
22
86
91

High Clouds (% Sky Obscured)

80
82
89
100
81
75
100
73
43
1
0
0
0
0
1
1
25
25
18
42
53
51
67
82

ISS Passover

Visibility (miles)

3
3
2
9
3
3
9
4
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

95
95
95
95
95
95
95
71
29
4
4
4
0
0
1
3
3
0
0
2
1
1
28
71

Precipitation Amount (mm)

0.9
1.1
1.2
0.6
0.8
0.8
0.7
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3

Wind Speed/Direction (mph)

11
9
9
10
11
11
11
10
9
9
9
9
8
8
8
8
8
8
8
10
11
12
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
18
18
18
17
17
17
15
15
13
13
12
11
11
11
11
11
10
10
11
12
13
13
13

Dew Point (°C)

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

Relative Humidity (%)

77
80
78
80
78
83
86
87
89
92
95
96
95
95
96
95
96
95
95
92
87
85
75
73

Pressure (mb)

1003
1003
1003
1003
1003
1003
1003
1004
1004
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006
1007
1006
1006
1006
1005

Ozone (du)

382
382
381
382
382
383
382
383
382
384
387
382
383
378
373
368
365
363
362
359
360
361
362
363

Wednesday 3

Waning Gibbous 88%

00:22

07:41

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 OK
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 04:37, Set: 21:18, Transit: 12:58. Moon - Rise: 00:22, Set: 07:41. Civil Dark: 22:07 - 03:48. Nautical Dark: 23:26 - 02:28. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
86
58
54
61
42
57
45
49
21
24
59
67
74
84
92
90
83
74
74
79

Low Clouds (% Sky Obscured)

44
60
75
91
71
49
29
41
42
57
43
32
20
21
27
28
33
41
50
54
54
55
55
55

Medium Clouds (% Sky Obscured)

100
96
99
60
36
18
0
5
8
12
11
41
3
8
14
19
27
37
45
25
17
13
24
34

High Clouds (% Sky Obscured)

100
65
60
60
43
23
0
0
0
2
3
2
0
0
0
0
0
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

2
3
7
5
9
9
9
9
3
9
9
9
9
9
9
9
9
9
9
9
8
7
5
6

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

Precipitation Probability (%)

95
56
68
80
72
56
32
45
61
75
58
33
0
1
14
12
5
12
8
41
55
61
53
46

Precipitation Amount (mm)

1
0.2
0.3
0.5
0.4
0
0
0
0.3
0.6
0.3
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
96
90
96
95
93
92
89
86
90
93
93
93
92
93
93
92
89
92
89
87
86
84
79

Pressure (mb)

1005
1004
1003
1003
1002
1001
1000
999
999
999
999
999
999
999
999
999
999
999
999
999
1000
1001
1001
1001

Ozone (du)

361
373
380
384
386
389
390
392
394
394
395
397
396
395
396
399
398
398
400
398
398
397
396
398

Thursday 4

Waning Gibbous 81%

00:43

08:57

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

Sun - Rise: 04:37, Set: 21:19, Transit: 12:58. Moon - Rise: 00:43, Set: 08:57. Civil Dark: 22:08 - 03:47. Nautical Dark: 23:28 - 02:26. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

83
84
85
86
74
57
37
38
37
34
29
19
18
42
51
66
78
90
100
99
99
99
97
93

Low Clouds (% Sky Obscured)

55
52
49
49
42
36
28
25
21
18
16
15
15
20
23
16
13
11
12
29
47
56
56
51

Medium Clouds (% Sky Obscured)

43
37
32
33
32
27
15
16
20
25
20
15
18
31
32
32
55
75
99
94
89
83
83
83

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
25
37
34
29
19
18
42
51
66
78
86
87
84
81
75
50
27

ISS Passover

Visibility (miles)

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

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
Light Rain
Light Rain

Precipitation Probability (%)

43
39
34
29
24
19
16
14
11
0
0
0
0
24
35
44
37
30
22
26
33
41
69
91

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
0.4
0.7

Wind Speed/Direction (mph)

21
22
22
21
21
19
17
16
13
11
9
9
9
10
9
9
8
9
9
10
11
12
14
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
69
67
65
64
65
66
67
71
76
81
86
88
91
93
93
95
88
85
80
83
86
90
92

Pressure (mb)

1002
1003
1003
1004
1004
1005
1005
1005
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1005
1005

Ozone (du)

400
402
403
404
404
400
395
391
385
378
372
371
371
370
368
367
366
366
366
366
364
362
361
359

Friday 5

Waning Gibbous 72%

00:59

10:15

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

Sun - Rise: 04:36, Set: 21:20, Transit: 12:58. Moon - Rise: 00:59, Set: 10:15. Civil Dark: 22:09 - 03:46. Nautical Dark: 23:30 - 02:25. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

88
88
87
87
69
53
37
32
25
15
27
35
42
35
40
38
32
23
9
29
45
63
66
68

Low Clouds (% Sky Obscured)

42
45
45
50
44
37
30
22
13
5
14
22
31
28
25
21
16
22
9
29
36
16
24
33

Medium Clouds (% Sky Obscured)

80
75
75
74
54
29
2
1
1
0
0
0
0
0
0
0
0
0
0
5
7
11
12
13

High Clouds (% Sky Obscured)

2
1
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
4
6
9
11
13

ISS Passover

Visibility (miles)

4
4
6
8
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
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
83
75
67
57
50
38
21
21
19
14
17
14
2
5
4
0
0
0
0
3
7

Precipitation Amount (mm)

0.9
0.8
0.6
0.4
0.4
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
95
95
93
89
86
83
82
83
83
83
84
86
81
79
76
76
76
76
72
70
68
65

Pressure (mb)

1004
1003
1003
1003
1002
1002
1002
1002
1002
1002
1003
1005
1006
1008
1009
1011
1012
1014
1015
1017
1017
1018
1019
1020

Ozone (du)

357
355
364
374
383
385
388
390
394
397
401
398
396
394
392
390
388
389
390
391
387
383
378
375

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

Generated: 30/05/26 20:15:51. Forecast: 30/05/26 to 05/06/26. Timezone: UTC+1.00