Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

15:50

04:21

07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
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: 05:38, Set: 20:19, Transit: 13:00. Moon - Rise: 15:50, Set: 04:21. Civil Dark: 20:57 - 05:01. Nautical Dark: 21:45 - 04:12. Astro Dark: 22:43 - 03:13

Total Clouds (% Sky Obscured)

25
24
23
27
36
41
61
76
87
83
94
100
60
82
73
100
85
79
97
78
94
92
93
96

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
22
43
32
0
16
30
34
44
47
66
67
69
95
75
89
84
81
94

Medium Clouds (% Sky Obscured)

25
17
14
25
16
21
26
30
40
68
60
43
23
32
26
79
23
15
6
38
75
81
41
28

High Clouds (% Sky Obscured)

1
3
0
0
0
0
2
1
5
35
59
0
0
0
0
0
0
0
0
6
60
64
0
28

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
4
3
6
4
4
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
Light Rain
Very Light Rain
Very Light Rain
Light Rain
None
None
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
3
8
23
46
67
64
64
69
36
35
39
21
10
6
9
8
19
8
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

2
2
3
3
4
4
5
5
6
9
9
9
10
9
10
10
11
10
11
11
10
10
10
12

Chance of Frost

Temperature (°C)

6
10
12
15
16
18
19
19
20
19
19
18
16
14
13
12
11
10
9
9
9
9
9
8

Feels Like (°C)

6
10
12
14
16
18
19
19
20
17
16
16
15
12
11
9
7
7
6
5
6
5
5
4

Dew Point (°C)

2
3
4
5
6
7
8
9
10
12
13
14
14
13
12
11
10
9
8
7
8
8
8
7

Relative Humidity (%)

74
64
58
51
50
50
51
51
54
63
71
76
85
92
93
93
95
95
93
88
91
91
93
88

Pressure (mb)

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

Ozone (du)

377
376
376
378
382
386
391
390
388
388
392
402
409
416
421
425
433
438
439
438
438
437
436
433

Tuesday 28

Waxing Gibbous 93%

17:04

04:32

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

Sun - Rise: 05:37, Set: 20:21, Transit: 13:00. Moon - Rise: 17:04, Set: 04:32. Civil Dark: 20:59 - 04:59. Nautical Dark: 21:47 - 04:10. Astro Dark: 22:46 - 03:10

Total Clouds (% Sky Obscured)

96
90
90
96
93
87
38
28
57
32
39
9
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

91
81
73
88
71
46
29
24
22
0
7
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

90
81
90
65
41
35
14
5
22
17
17
7
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

53
63
5
3
29
39
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 (%)

15
14
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)

12
14
14
14
17
17
18
18
19
19
18
17
17
16
15
15
15
15
15
15
15
14
15
14

Chance of Frost

Temperature (°C)

8
9
9
10
11
12
13
14
15
16
16
15
14
12
11
9
8
8
7
7
7
7
7
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
87
88
81
61
56
52
51
53
55
60
62
63
65
68
72
75
77
81
82
84
84
84
84

Pressure (mb)

1024
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023

Ozone (du)

431
426
425
425
425
423
422
420
420
418
414
412
411
410
410
411
409
408
406
404
403
401
398
396

Wednesday 29

Waxing Gibbous 97%

18:18

04:44

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

Sun - Rise: 05:35, Set: 20:23, Transit: 13:00. Moon - Rise: 18:18, Set: 04:44. Civil Dark: 21:00 - 04:57. Nautical Dark: 21:49 - 04:07. Astro Dark: 22:49 - 03:06

Total Clouds (% Sky Obscured)

0
0
0
5
10
10
15
25
25
25
35
29
27
17
7
2
8
6
3
4
8
12
9
4

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
5
10
10
15
25
25
25
25
29
27
17
7
2
8
6
3
2
2
3
3
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
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)

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

Chance of Frost

Temperature (°C)

8
10
12
14
15
16
17
17
17
17
16
15
14
13
12
11
10
10
10
10
10
9
9
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
73
65
57
52
52
52
52
51
51
51
53
56
56
55
58
61
61
62
62
63
62
62
63

Pressure (mb)

1024
1024
1024
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022

Ozone (du)

395
395
394
393
392
391
390
388
387
386
387
387
388
388
386
387
386
385
385
385
386
385
383
381

Thursday 30

Waxing Gibbous 99%

19:33

04:58

07 Good
08 Good
09 Good
10 Good
11 Good
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 Good
03 Good
04 Good
05 Good
06 Good

Sun - Rise: 05:33, Set: 20:24, Transit: 12:59. Moon - Rise: 19:33, Set: 04:58. Civil Dark: 21:02 - 04:55. Nautical Dark: 21:52 - 04:05. Astro Dark: 22:53 - 03:03

Total Clouds (% Sky Obscured)

1
1
1
1
1
1
1
1
0
0
0
1
1
7
5
10
7
10
10
15
14
9
3
2

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1

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
1
2
2

High Clouds (% Sky Obscured)

0
0
0
0
1
0
0
0
0
0
0
1
1
7
5
10
7
10
10
10
3
2
0
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
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)

13
13
14
15
16
16
16
16
15
15
14
13
12
9
8
7
6
5
5
4
3
3
3
2

Chance of Frost

Temperature (°C)

9
11
13
15
16
18
19
19
19
18
18
17
17
15
13
12
11
10
10
9
9
8
8
8

Feels Like (°C)

6
8
9
11
12
14
15
15
15
15
16
15
15
14
11
9
9
9
9
8
8
8
8
9

Dew Point (°C)

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

Relative Humidity (%)

63
60
54
49
45
42
41
41
43
45
49
52
57
66
68
70
72
74
76
78
78
81
84
82

Pressure (mb)

1022
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1020
1020
1020
1020

Ozone (du)

379
377
375
376
376
375
374
373
372
371
368
366
365
366
366
367
367
366
367
368
369
368
367
365

Friday 1

Full Moon 100%

20:47

05:15

07 Good
08 OK
09 OK
10 Good
11 Good
12 Good
13 OK
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: 05:31, Set: 20:26, Transit: 12:59. Moon - Rise: 20:47, Set: 05:15. Civil Dark: 21:04 - 04:52. Nautical Dark: 21:54 - 04:02. Astro Dark: 22:56 - 02:59

Total Clouds (% Sky Obscured)

2
19
20
7
6
10
30
48
67
77
86
96
73
76
85
91
97
99
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
1
0
0
1
4
7
5
7
19
31
44
54
58
62
71
79
88
68
51
32
31
23
20

Medium Clouds (% Sky Obscured)

2
19
20
7
5
7
11
15
23
41
62
75
47
27
18
14
9
9
10
11
17
24
31
41

High Clouds (% Sky Obscured)

0
0
0
0
0
0
10
20
29
44
64
81
14
21
55
66
60
53
64
75
86
91
92
84

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

Precipitation Probability (%)

0
0
0
0
0
0
8
7
3
6
9
10
34
43
41
54
59
55
43
31
13
16
12
4

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
11
14
16
18
19
21
21
21
21
20
19
18
17
15
14
13
13
13
12
12
11
11
11

Feels Like (°C)

10
12
12
15
17
20
20
19
20
20
19
19
18
18
17
16
15
15
14
10
10
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

80
73
69
68
68
68
67
70
68
63
62
62
70
74
78
83
82
83
83
81
80
79
78
77

Pressure (mb)

1020
1021
1021
1021
1020
1020
1019
1019
1019
1019
1018
1018
1018
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018

Ozone (du)

364
363
363
362
362
362
361
360
359
358
359
359
360
361
363
364
364
365
365
364
363
363
363
363

Saturday 2

Waning Gibbous 98%

22:01

05:38

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

Sun - Rise: 05:29, Set: 20:28, Transit: 12:59. Moon - Rise: 22:01, Set: 05:38. Civil Dark: 21:06 - 04:50. Nautical Dark: 21:56 - 04:00. Astro Dark: 22:59 - 02:55

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
92
84
78
78
80
84
86
89
91
94
98
100

Low Clouds (% Sky Obscured)

29
32
36
44
47
51
61
68
80
78
77
78
71
61
53
60
66
73
69
65
61
66
71
75

Medium Clouds (% Sky Obscured)

53
65
80
86
93
100
91
84
84
90
90
84
66
49
34
49
66
82
85
86
91
93
96
95

High Clouds (% Sky Obscured)

85
92
97
98
99
100
100
100
100
100
98
97
74
60
50
50
45
45
40
45
50
63
77
99

ISS Passover

Visibility (miles)

9
8
8
7
7
7
7
8
8
9
9
9
8
8
8
8
6
4
1
2
2
2
2
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

18
22
25
46
69
91
90
87
81
83
78
72
79
77
55
69
75
83
82
86
95
93
95
95

Precipitation Amount (mm)

0
0
0
0
0.4
0.9
0.7
0.5
0.3
0.4
0.4
0.2
0.4
0.5
0
0.3
0.4
0.6
0.5
0.6
0.7
0.6
0.7
0.9

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
79
80
83
87
90
93
93
92
92
92
91
93
93
95
95
96
96
96
96
96
96
95
96

Pressure (mb)

1018
1018
1018
1018
1017
1017
1017
1016
1016
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1013
1013
1013
1013
1013

Ozone (du)

363
364
364
365
365
366
367
368
369
370
370
371
371
372
373
374
374
374
374
375
377
379
380
382

Sunday 3

Waning Gibbous 95%

23:12

06:09

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: 05:27, Set: 20:29, Transit: 12:59. Moon - Rise: 23:12, Set: 06:09. Civil Dark: 21:08 - 04:48. Nautical Dark: 21:59 - 03:57. Astro Dark: 23:03 - 02:52

Total Clouds (% Sky Obscured)

100
100
100
99
97
96
97
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

73
73
74
71
65
63
62
61
67
63
62
67
70
76
86
88
89
87

Medium Clouds (% Sky Obscured)

84
73
63
45
29
12
22
24
22
15
7
0
10
20
31
30
29
32

High Clouds (% Sky Obscured)

94
91
90
72
51
32
52
76
95
95
95
96
95
91
90
79
67
47

ISS Passover

Visibility (miles)

4
6
7
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

Precipitation Type

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

Precipitation Probability (%)

95
84
58
54
54
51
40
29
22
20
18
13
12
10
1
3
2
1

Precipitation Amount (mm)

0.7
0.5
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
93
95
91
91
90
88
87
84
84
82
81
82
82
82
79
78

Pressure (mb)

1012
1012
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013

Ozone (du)

384
386
389
391
393
394
395
395
395
394
391
388
385
386
386
386
385
384

Forecast for Bray Court, Windsor and Maidenhead, United Kingdom (51.50,-0.70)

Generated: 27/04/26 07:59:42. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+1.00