Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 24

First Quarter 58%

11:49

03:43

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

Sun - Rise: 05:44, Set: 20:14, Transit: 13:00. Moon - Rise: 11:49, Set: 03:43. Civil Dark: 20:51 - 05:07. Nautical Dark: 21:38 - 04:20. Astro Dark: 22:34 - 03:24

Total Clouds (% Sky Obscured)

78
61
47
37
0
0
0
0
0
0
0
5
82
82
71
4
0
0
0
0
0
1
63
100

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
15
0
0
0
0
0
0
0
0
35

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
5
32
37
35
4
0
0
0
0
0
1
31
68

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)

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

Chance of Frost

Temperature (°C)

4
5
7
9
13
15
16
18
18
19
19
18
16
13
11
9
8
7
6
5
4
4
3
3

Feels Like (°C)

3
3
5
7
10
12
14
15
16
16
17
16
15
12
9
8
7
6
4
4
4
3
2
2

Dew Point (°C)

1
1
-0
-0
1
2
2
2
2
2
5
5
6
3
0
0
1
1
0
1
0
0
-1
-1

Relative Humidity (%)

82
71
59
51
46
41
36
35
33
33
40
43
50
48
47
52
59
64
68
73
75
76
77
76

Pressure (mb)

1027
1027
1027
1027
1027
1026
1025
1025
1024
1023
1023
1023
1023
1023
1023
1024
1024
1024
1023
1023
1023
1022
1022
1022

Ozone (du)

391
388
384
382
378
376
378
377
375
372
369
366
364
363
364
362
362
362
360
359
357
357
358
361

Saturday 25

Waxing Gibbous 68%

13:13

03:58

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

Sun - Rise: 05:42, Set: 20:16, Transit: 13:00. Moon - Rise: 13:13, Set: 03:58. Civil Dark: 20:53 - 05:05. Nautical Dark: 21:40 - 04:17. Astro Dark: 22:37 - 03:20

Total Clouds (% Sky Obscured)

100
100
99
88
98
80
80
100
100
100
96
92
89
80
72
6
1
16
15
5
48
82
89
88

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
45
81
88
86

Medium Clouds (% Sky Obscured)

42
27
82
73
72
80
78
88
97
62
44
46
66
59
12
5
1
8
8
2
2
5
8
3

High Clouds (% Sky Obscured)

93
100
99
88
98
72
66
63
68
67
61
52
46
40
43
3
1
12
15
5
20
25
31
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
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)

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

Chance of Frost

Temperature (°C)

3
6
8
11
14
16
17
18
19
19
19
18
17
15
13
11
10
9
8
8
8
7
7
7

Feels Like (°C)

2
4
6
8
11
14
15
16
17
17
18
18
17
14
11
10
10
9
7
6
5
5
5
5

Dew Point (°C)

-1
-1
-0
1
2
2
3
4
4
5
5
7
9
8
6
5
4
3
3
3
3
4
5
5

Relative Humidity (%)

72
61
55
49
44
40
39
38
37
38
39
47
56
59
60
64
65
65
68
68
71
79
82
82

Pressure (mb)

1022
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021
1021
1022
1022
1023
1023
1023
1024
1024
1025
1025
1025
1026
1026

Ozone (du)

361
358
361
368
372
372
371
373
373
373
374
374
374
375
376
377
377
375
375
375
375
374
373
372

Sunday 26

Waxing Gibbous 78%

14:33

04:10

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

Sun - Rise: 05:40, Set: 20:18, Transit: 13:00. Moon - Rise: 14:33, Set: 04:10. Civil Dark: 20:55 - 05:03. Nautical Dark: 21:43 - 04:15. Astro Dark: 22:40 - 03:17

Total Clouds (% Sky Obscured)

93
99
93
90
97
100
38
11
21
14
22
4
9
20
12
10
10
10
10
10
13
15
8
7

Low Clouds (% Sky Obscured)

72
66
54
22
0
0
0
9
21
14
4
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

3
3
14
3
4
4
4
4
0
0
0
0
0
0
0
0
0
0
1
3
1
1
0
0

High Clouds (% Sky Obscured)

81
96
75
72
86
98
38
3
5
2
11
2
9
20
12
10
10
10
10
5
4
4
2
2

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)

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

Chance of Frost

Temperature (°C)

8
9
10
12
14
16
17
18
19
19
19
18
17
15
12
11
10
9
8
8
7
6
6
6

Feels Like (°C)

5
6
7
10
12
14
15
16
18
19
18
17
16
13
10
9
7
6
6
5
5
4
4
4

Dew Point (°C)

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

Relative Humidity (%)

78
74
67
62
58
54
50
49
47
46
48
56
64
69
72
76
74
73
75
75
75
78
78
78

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1026
1026
1026
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028

Ozone (du)

372
372
372
372
374
373
372
372
373
372
371
371
372
371
371
371
372
371
371
371
372
373
374
375

Monday 27

Waxing Gibbous 86%

15:50

04:21

07 Good
08 Good
09 Good
10 Good
11 Good
12 Good
13 OK
14 OK
15 Bad
16 Bad
17 OK
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)

3
3
3
5
7
9
24
38
54
56
47
51
66
78
98
97
94
89
79
74
64
68
70
77

Low Clouds (% Sky Obscured)

0
0
0
3
7
9
9
8
8
8
2
0
7
14
30
32
34
34
36
48
52
57
61
66

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
11
16
21
18
17
16
18
19
17
19
19
17
13
9
6
4
2
0

High Clouds (% Sky Obscured)

2
3
3
2
1
0
0
0
0
6
11
16
33
46
59
55
61
56
43
26
0
1
1
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
3
1
3
1
0
1
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)

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

Chance of Frost

Temperature (°C)

6
9
11
14
15
17
19
19
20
20
20
20
19
16
14
13
13
12
11
9
8
8
8
8

Feels Like (°C)

5
8
11
13
15
16
18
19
19
19
19
20
19
17
15
13
11
10
9
9
7
7
6
7

Dew Point (°C)

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

Relative Humidity (%)

76
65
60
57
54
53
52
52
55
56
57
61
71
75
80
77
75
79
81
88
95
95
93
95

Pressure (mb)

1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1026
1026
1025
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

375
375
375
377
376
376
377
375
375
375
372
372
372
372
371
371
371
372
372
372
371
370
369
369

Tuesday 28

Waxing Gibbous 93%

17:04

04:32

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: 05:37, 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)

82
97
98
87
78
67
62
56
51
54
55
60
74
69
59
58
64
74
85
93
100
96
92
84

Low Clouds (% Sky Obscured)

79
87
94
87
78
67
62
54
48
52
55
60
65
51
36
50
64
74
85
89
96
84
80
71

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
8
4
3
1
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
10
12
9
2
2
2
2
4
2
1
1
4
5
3
1
1
0
1
1
1
1
1
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
3
12
4
4
3
1
6
3
10
12
11
10
9
6
0
1
1
0
2
3
2

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
12
13
13
12
11
11
11
12
11
11
9
9
7
7
6
6
6
5
5
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
85
78
72
65
61
62
66
65
61
61
63
69
74
77
83
85
90
95
96
96
96
96
95

Pressure (mb)

1027
1028
1028
1028
1028
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

369
369
369
369
368
368
368
368
368
369
367
367
368
369
370
371
371
371
371
370
369
368
369
369

Wednesday 29

Waxing Gibbous 97%

18:18

04:44

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

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)

85
85
85
73
60
49
48
44
40
39
41
40
43
47
48
36
19
1
17
32
49
62
71
84

Low Clouds (% Sky Obscured)

72
77
82
73
60
49
48
44
40
39
41
40
43
47
48
36
19
0
17
32
49
62
71
84

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)

1
0
0
0
0
0
0
0
0
0
0
0
2
2
2
5
7
1
8
7
6
14
17
38

ISS Passover

Visibility (miles)

8
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 (%)

3
3
1
3
4
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

8
8
9
10
11
11
12
13
13
13
14
14
15
13
11
9
8
8
7
7
6
5
6
7

Feels Like (°C)

8
7
7
7
7
7
7
10
10
9
9
9
9
12
11
12
11
10
9
5
5
5
5
5

Dew Point (°C)

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

Relative Humidity (%)

95
90
87
82
78
76
71
71
69
68
68
69
70
75
80
88
88
90
93
91
93
93
91
91

Pressure (mb)

1027
1027
1027
1028
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1027
1027
1028
1028
1028
1028
1028
1029
1029
1029

Ozone (du)

369
370
370
370
370
369
369
369
369
369
368
368
368
368
369
369
370
370
371
372
373
374
375
375

Thursday 30

Waxing Gibbous 99%

19:33

04:58

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

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)

75
66
60
60
62
69
66
48
40
41
51
66
75
82
89
79
73
65

Low Clouds (% Sky Obscured)

75
66
60
60
62
69
66
48
40
41
51
43
36
26
13
14
16
25

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

29
16
7
5
4
2
1
1
0
1
2
3
4
9
10
18
23
34

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
2
0
2
2
1
1
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
9
11
13
14
15
17
17
18
18
17
16
16
14
13
11
10
10

Feels Like (°C)

5
6
6
7
8
9
10
17
16
16
16
17
17
13
13
13
11
11

Dew Point (°C)

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

Relative Humidity (%)

90
84
77
71
67
62
59
58
56
54
60
66
73
78
83
90
90
91

Pressure (mb)

1029
1029
1029
1030
1029
1029
1029
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029
1030

Ozone (du)

376
374
373
371
371
371
371
370
370
370
369
368
367
366
366
366
365
365

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

Generated: 24/04/26 07:54:10. Forecast: 24/04/26 to 30/04/26. Timezone: UTC+1.00