Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 28

Waxing Gibbous 93%

17:05

04:32

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

Sun - Rise: 05:35, Set: 20:23, Transit: 13:00. Moon - Rise: 17:05, Set: 04:32. Civil Dark: 21:01 - 04:57. Nautical Dark: 21:51 - 04:07. Astro Dark: 22:52 - 03:05

Total Clouds (% Sky Obscured)

85
63
55
27
29
11
29
11
0
0
0
0
0
24
36
44
41
40
8
0
0
0
0
0

Low Clouds (% Sky Obscured)

35
22
34
27
29
11
29
11
0
0
0
0
0
24
36
44
41
40
8
0
0
0
0
0

Medium Clouds (% Sky Obscured)

14
18
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
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
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 (%)

6
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
8
8
8
10
10
9
7
6
4
3
3
2
2
2
2
2
2
2
2
5
6
9
10

Dew Point (°C)

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

Relative Humidity (%)

77
66
60
59
61
67
69
72
73
73
77
79
81
83
85
86
88
90
90
84
78
71
65
60

Pressure (mb)

1026
1026
1025
1025
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026

Ozone (du)

415
411
409
409
408
404
400
396
393
390
389
389
390
391
390
390
391
391
391
392
390
389
391
392

Wednesday 29

Waxing Gibbous 97%

18:20

04:43

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

Sun - Rise: 05:33, Set: 20:25, Transit: 13:00. Moon - Rise: 18:20, Set: 04:43. Civil Dark: 21:03 - 04:55. Nautical Dark: 21:53 - 04:04. Astro Dark: 22:55 - 03:01

Total Clouds (% Sky Obscured)

0
0
0
0
5
100
100
48
100
9
4
4
1
1
1
1
1
1
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
5
100
100
48
100
9
4
4
1
1
1
1
1
1
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
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)

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

Chance of Frost

Temperature (°C)

17
17
18
18
18
17
16
15
13
11
10
9
8
7
7
6
6
6
7
7
10
12
14
16

Feels Like (°C)

12
12
13
13
13
11
10
9
7
6
5
4
3
4
3
3
3
3
4
4
6
8
10
12

Dew Point (°C)

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

Relative Humidity (%)

57
56
54
56
59
63
65
67
68
68
71
73
75
78
78
76
79
82
85
82
77
70
62
57

Pressure (mb)

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

Ozone (du)

393
393
396
395
390
389
388
385
383
385
385
384
384
384
384
385
384
383
381
381
382
384
386
388

Thursday 30

Waxing Gibbous 99%

19:35

04:56

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

Sun - Rise: 05:31, Set: 20:26, Transit: 13:00. Moon - Rise: 19:35, Set: 04:56. Civil Dark: 21:05 - 04:52. Nautical Dark: 21:55 - 04:02. Astro Dark: 22:59 - 02:57

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
6
28
1
2
15
47
60
60
65
59
57

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
12
16
25
34

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
20
24
30
35
32
30

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
3
13
1
2
11
18
37
57
65
58
37

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
1
1
2
6
13

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)

17
17
17
17
16
15
14
12
9
8
7
7
7
6
6
6
6
5
5
5
6
7
7
7

Chance of Frost

Temperature (°C)

17
19
19
19
19
18
17
16
14
12
11
10
10
10
9
9
8
8
8
9
12
14
16
17

Feels Like (°C)

13
14
15
16
15
15
14
14
13
11
9
9
9
9
8
8
7
7
7
9
11
13
15
17

Dew Point (°C)

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

Relative Humidity (%)

53
53
53
54
54
60
63
67
78
81
81
83
82
84
85
82
82
82
81
80
72
67
62
60

Pressure (mb)

1023
1023
1022
1022
1021
1021
1021
1021
1021
1022
1022
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

387
386
385
385
385
384
383
382
381
379
378
377
376
375
375
375
375
374
373
372
372
372
373
373

Friday 1

Full Moon 100%

20:50

05:13

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: 05:29, Set: 20:28, Transit: 13:00. Moon - Rise: 20:50, Set: 05:13. Civil Dark: 21:07 - 04:50. Nautical Dark: 21:58 - 03:59. Astro Dark: 23:02 - 02:53

Total Clouds (% Sky Obscured)

58
70
73
80
80
82
69
77
85
45
59
86
92
86
96
98
99
99
95
90
83
77
84
88

Low Clouds (% Sky Obscured)

42
41
40
41
48
57
57
40
21
0
17
33
49
50
51
49
43
35
37
60
64
65
54
55

Medium Clouds (% Sky Obscured)

29
40
54
60
59
58
58
66
48
35
33
39
39
42
50
55
59
54
52
37
28
20
82
72

High Clouds (% Sky Obscured)

16
39
66
80
80
82
69
77
85
45
59
86
88
77
87
94
84
63
31
27
14
10
15
15

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
7
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

11
30
37
44
66
85
95
87
67
54
34
17
7
3
2
1
0
0
0
0
0
0
1
3

Precipitation Amount (mm)

0
0
0
0
0.3
0.6
1.2
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
21
21
21
22
22
20
19
17
15
14
13
12
10
10
9
9
9
9
10
11
12
13
14

Dew Point (°C)

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

Relative Humidity (%)

58
57
57
58
59
60
67
78
85
92
95
96
98
98
98
98
98
98
98
96
93
89
83
79

Pressure (mb)

1019
1019
1019
1018
1018
1017
1017
1017
1017
1017
1018
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

374
376
379
381
381
380
377
371
369
367
367
364
363
361
363
365
366
369
370
369
369
367
367
368

Saturday 2

Waning Gibbous 98%

22:05

05:35

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: 05:28, Set: 20:30, Transit: 13:00. Moon - Rise: 22:05, Set: 05:35. Civil Dark: 21:09 - 04:48. Nautical Dark: 22:00 - 03:56. Astro Dark: 23:06 - 02:49

Total Clouds (% Sky Obscured)

93
86
79
72
80
86
94
96
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

66
59
44
33
35
34
36
48
57
69
70
70
72
71
70
69
79
90
100
100
100
100
100
100

Medium Clouds (% Sky Obscured)

69
55
74
71
78
83
91
93
97
100
100
100
100
100
99
99
99
100
100
100
100
100
91
82

High Clouds (% Sky Obscured)

20
30
30
25
36
52
68
79
89
100
100
100
100
99
99
98
92
85
78
70
64
68
63
61

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
6
5
6
0
1
2
2
2
1
0
1
3
4
6
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

11
9
8
13
17
25
45
57
61
60
67
71
62
71
64
54
64
72
78
75
72
69
67
64

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
7
7
7
6
5
3
4
4
4
8
8
8
7
8
8
9
10
12
13
14
14
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
16
17
16
17
18
18
16
14
13
10
9
9
10
9
9
8
9
8
8
7
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

77
75
73
71
71
70
72
79
85
90
96
98
98
98
98
98
98
96
98
96
96
95
95
91

Pressure (mb)

1015
1015
1014
1014
1013
1013
1013
1012
1012
1013
1013
1013
1013
1013
1012
1012
1012
1013
1013
1013
1014
1014
1015
1015

Ozone (du)

367
367
367
368
369
369
370
372
373
377
379
382
385
386
387
388
390
390
391
392
391
390
390
387

Sunday 3

Waning Gibbous 95%

23:16

06:05

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: 05:26, Set: 20:31, Transit: 12:59. Moon - Rise: 23:16, Set: 06:05. Civil Dark: 21:11 - 04:46. Nautical Dark: 22:02 - 03:54. Astro Dark: 23:09 - 02:45

Total Clouds (% Sky Obscured)

100
100
100
99
98
91
88
88
90
89
80
69
59
70
74
78
78
77
81
88
94
96
97
98

Low Clouds (% Sky Obscured)

100
97
94
91
88
85
82
84
81
80
77
69
59
70
66
62
62
61
61
60
61
57
62
68

Medium Clouds (% Sky Obscured)

73
66
60
61
59
57
40
25
20
20
15
15
25
30
46
51
51
52
52
49
41
39
44
47

High Clouds (% Sky Obscured)

56
54
62
65
77
87
88
88
90
89
80
69
59
70
74
78
78
77
81
65
52
51
62
76

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
Very Light Rain
Very Light Rain
Very 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
None

Precipitation Probability (%)

50
55
61
56
56
54
45
45
41
30
41
44
37
36
33
23
21
15
9
7
4
1
1
1

Precipitation Amount (mm)

0
0.2
0.3
0.3
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
4
6
5
5
5
6
6
6
7
7
7
7
7
2
3
3
2
2
1
3
2
2
2

Dew Point (°C)

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

Relative Humidity (%)

88
82
80
76
72
73
74
75
75
78
79
84
86
91
93
94
94
94
93
91
83
78
71
68

Pressure (mb)

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

Ozone (du)

384
381
380
378
377
375
374
372
371
370
369
369
368
368
368
367
366
367
367
367
368
368
369
369

Monday 4

Waning Gibbous 90%

00:19

06:47

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

Sun - Rise: 05:24, Set: 20:33, Transit: 12:59. Moon - Rise: 00:19, Set: 06:47. Civil Dark: 21:12 - 04:44. Nautical Dark: 22:05 - 03:51. Astro Dark: 23:13 - 02:41

Total Clouds (% Sky Obscured)

99
98
96
95
95
96
96
94
93
91
72
62
51
52
72
75
76
71
41

Low Clouds (% Sky Obscured)

77
76
66
56
51
45
40
37
33
30
21
16
10
10
9
9
8
7
13

Medium Clouds (% Sky Obscured)

53
58
64
71
72
73
75
77
79
82
72
62
51
52
65
61
52
46
41

High Clouds (% Sky Obscured)

86
80
74
69
59
55
52
51
51
56
51
46
41
31
31
17
17
17
22

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
1
3
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

2
2
8
7
7
8
9
10
7
8
7
7
6
5
3
3
2
2
2

Dew Point (°C)

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

Relative Humidity (%)

64
62
61
60
60
66
72
80
81
85
90
87
82
79
84
88
93
93
91

Pressure (mb)

1016
1016
1016
1015
1015
1015
1014
1014
1014
1015
1015
1015
1014
1014
1014
1014
1013
1013
1013

Ozone (du)

369
369
367
366
365
364
363
362
363
363
364
363
363
362
362
363
363
363
362

Forecast for Loughton, Milton Keynes, United Kingdom (52.03,-0.77)

Generated: 28/04/26 12:22:18. Forecast: 28/04/26 to 04/05/26. Timezone: UTC+1.00