Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 23

Waxing Crescent 46%

10:15

03:23

06 Bad
07 Bad
08 Bad
09 Bad
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 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:42, Set: 20:12, Transit: 12:58. Moon - Rise: 10:15, Set: 03:23. Civil Dark: 20:49 - 05:04. Nautical Dark: 21:37 - 04:16. Astro Dark: 22:34 - 03:18

Total Clouds (% Sky Obscured)

54
60
65
60
17
7
3
0
0
0
0
0
0
0
0
0
0
18
46
68
79
82
80
90

Low Clouds (% Sky Obscured)

54
60
65
55
17
7
3
0
0
0
0
0
0
0
0
0
0
18
46
68
79
82
80
90

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6

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
1

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)

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

Chance of Frost

Temperature (°C)

5
6
7
9
11
13
15
16
17
17
17
17
16
14
11
9
7
5
4
4
3
3
3
3

Feels Like (°C)

4
5
6
7
9
10
12
14
15
15
15
16
15
13
10
7
6
4
3
3
2
2
2
2

Dew Point (°C)

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

Relative Humidity (%)

94
93
82
72
62
56
51
47
46
45
45
51
59
68
77
84
90
91
89
88
86
85
85
83

Pressure (mb)

1031
1031
1032
1032
1032
1032
1031
1031
1031
1030
1030
1029
1029
1029
1029
1030
1030
1030
1030
1030
1029
1029
1029
1029

Ozone (du)

384
385
385
386
387
391
395
396
394
393
391
389
386
384
383
382
381
379
378
379
379
379
379
381

Friday 24

First Quarter 58%

11:43

03:43

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

Sun - Rise: 05:40, Set: 20:14, Transit: 12:58. Moon - Rise: 11:43, Set: 03:43. Civil Dark: 20:51 - 05:02. Nautical Dark: 21:40 - 04:13. Astro Dark: 22:37 - 03:15

Total Clouds (% Sky Obscured)

94
95
90
90
90
91
91
32
1
0
0
0
0
0
0
1
1
1
16
34
52
61
59
68

Low Clouds (% Sky Obscured)

94
91
86
74
51
30
0
0
0
0
0
0
0
0
0
0
0
0
16
34
51
61
59
63

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)

38
35
25
40
55
43
48
18
1
0
0
0
0
0
0
1
1
1
1
4
17
11
2
17

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 (%)

6
100
5
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
5
6
6
6
6
6
6
6
6
7
6
5
5
4
4
4
3
3
3
3
3
2
3

Chance of Frost

Temperature (°C)

3
4
5
7
8
11
13
14
16
17
18
18
17
16
13
11
9
8
7
6
5
4
3
3

Feels Like (°C)

2
2
4
6
8
10
12
13
15
16
17
17
17
16
13
11
9
8
7
6
4
2
1
2

Dew Point (°C)

-0
-0
-1
-1
-1
0
1
2
3
4
4
5
8
10
9
9
7
6
5
3
2
1
0
0

Relative Humidity (%)

80
76
66
58
53
48
43
41
40
40
40
42
55
66
76
85
88
88
87
85
85
85
82
83

Pressure (mb)

1028
1029
1029
1029
1029
1028
1028
1027
1026
1025
1025
1024
1024
1023
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023

Ozone (du)

383
384
384
384
385
387
389
392
396
395
392
391
389
379
377
375
374
373
372
366
363
360
361
361

Saturday 25

Waxing Gibbous 68%

13:08

03:57

06 Bad
07 OK
08 Good
09 Good
10 OK
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

Sun - Rise: 05:38, Set: 20:15, Transit: 12:58. Moon - Rise: 13:08, Set: 03:57. Civil Dark: 20:53 - 05:00. Nautical Dark: 21:42 - 04:11. Astro Dark: 22:41 - 03:11

Total Clouds (% Sky Obscured)

74
31
13
17
32
78
77
59
65
82
100
100
100
100
100
100
100
98
100
98
95
81
67
69

Low Clouds (% Sky Obscured)

58
29
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
55
45
25
20
36
28
29
91
100
98
96
96
48
44
41
39

High Clouds (% Sky Obscured)

36
5
13
17
32
76
69
52
58
81
100
100
100
100
100
100
100
93
100
92
82
47
25
26

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 (%)

95
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
3
2
3
3
2
2
2
2
2
2
2
2
2
3
5
5
5
5
5
4
4
3
4

Chance of Frost

Temperature (°C)

2
3
6
10
13
15
17
18
19
19
19
19
18
17
15
13
11
10
9
9
8
7
7
6

Feels Like (°C)

2
2
6
9
11
13
16
17
19
19
18
17
17
16
13
10
8
7
6
5
5
5
5
5

Dew Point (°C)

-1
0
2
4
6
6
6
6
6
6
6
7
8
10
9
9
8
5
4
3
3
3
3
3

Relative Humidity (%)

83
80
72
68
62
56
49
45
43
42
43
45
52
61
68
80
80
74
69
68
71
75
78
79

Pressure (mb)

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

Ozone (du)

360
361
361
360
360
359
357
355
356
356
357
357
359
360
360
362
363
367
368
369
372
374
372
371

Sunday 26

Waxing Gibbous 78%

14:29

04:09

06 Bad
07 Bad
08 Bad
09 OK
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 OK
05 OK

Sun - Rise: 05:36, Set: 20:17, Transit: 12:57. Moon - Rise: 14:29, Set: 04:09. Civil Dark: 20:55 - 04:58. Nautical Dark: 21:44 - 04:08. Astro Dark: 22:44 - 03:07

Total Clouds (% Sky Obscured)

68
63
50
35
57
72
84
89
96
99
98
96
95
96
98
100
100
100
100
94
86
52
44
35

Low Clouds (% Sky Obscured)

0
0
0
0
9
18
27
30
31
33
34
40
42
28
14
0
0
0
0
0
0
0
7
16

Medium Clouds (% Sky Obscured)

36
27
18
7
32
34
28
29
48
72
91
85
88
85
79
73
84
92
100
94
74
37
20
12

High Clouds (% Sky Obscured)

21
31
27
22
36
54
62
78
88
95
79
63
41
63
79
99
100
100
100
75
50
6
4
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
7
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
5
6
8
10
12
14
16
16
17
16
16
16
15
11
9
8
6
6
5
5
4
6
6

Dew Point (°C)

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

Relative Humidity (%)

81
79
74
69
66
63
60
60
58
58
57
57
63
74
86
90
91
87
82
82
79
82
84
85

Pressure (mb)

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

Ozone (du)

370
367
365
364
364
364
364
365
365
364
364
365
366
367
366
366
366
367
368
373
377
377
373
373

Monday 27

Waxing Gibbous 86%

15:46

04:19

06 OK
07 Bad
08 OK
09 Bad
10 OK
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

Sun - Rise: 05:34, Set: 20:19, Transit: 12:57. Moon - Rise: 15:46, Set: 04:19. Civil Dark: 20:57 - 04:55. Nautical Dark: 21:46 - 04:05. Astro Dark: 22:47 - 03:04

Total Clouds (% Sky Obscured)

23
50
47
52
46
54
54
64
77
90
90
83
82
79
78
81
87
89
90
89
88
86
85
85

Low Clouds (% Sky Obscured)

23
17
10
0
0
0
0
10
21
32
31
28
29
64
72
80
73
67
61
56
50
46
55
65

Medium Clouds (% Sky Obscured)

0
2
35
40
32
9
20
61
71
40
76
45
21
60
49
39
40
41
42
44
45
50
51
42

High Clouds (% Sky Obscured)

0
34
43
52
26
39
36
43
53
64
66
59
65
19
24
23
10
7
1
1
1
1
1
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
5
5
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
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
1
4
18
35
39
41
25
41
30
16
20
22
21
19
20
24
21
19

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
6
8
10
12
15
15
16
16
16
16
14
14
13
11
10
11
10
9
9
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

88
85
81
77
69
62
56
54
55
61
66
73
77
78
83
87
93
95
93
95
96
96
98
96

Pressure (mb)

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

Ozone (du)

374
373
374
375
372
371
372
372
371
372
371
373
372
373
373
373
373
374
375
376
377
378
379
387

Tuesday 28

Waxing Gibbous 92%

17:02

04:29

06 Bad
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

Sun - Rise: 05:32, Set: 20:20, Transit: 12:57. Moon - Rise: 17:02, Set: 04:29. Civil Dark: 20:59 - 04:53. Nautical Dark: 21:49 - 04:03. Astro Dark: 22:51 - 03:00

Total Clouds (% Sky Obscured)

86
85
81
80
77
75
72
64
57
51
49
49
49
59
69
82
78
76
73
73
72
73
72
72

Low Clouds (% Sky Obscured)

74
76
77
78
75
73
71
61
50
42
42
41
43
59
69
80
76
73
70
69
67
67
67
68

Medium Clouds (% Sky Obscured)

27
14
5
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
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 (%)

18
15
11
3
24
33
41
35
30
27
25
20
8
7
5
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)

8
9
10
12
14
15
16
17
18
18
19
17
16
15
14
14
13
12
12
12
11
11
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
87
80
73
73
73
74
70
66
62
67
73
81
82
84
85
85
87
87
88
90
91
91

Pressure (mb)

1021
1021
1021
1021
1021
1020
1020
1020
1020
1020
1019
1020
1020
1020
1020
1020
1021
1021
1020
1020
1020
1020
1020
1020

Ozone (du)

396
404
407
411
414
414
413
413
410
407
403
403
404
404
404
404
404
406
407
408
406
403
401
397

Wednesday 29

Waxing Gibbous 97%

18:17

04:40

06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 OK
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

Sun - Rise: 05:30, Set: 20:22, Transit: 12:57. Moon - Rise: 18:17, Set: 04:40. Civil Dark: 21:01 - 04:51. Nautical Dark: 21:51 - 04:00. Astro Dark: 22:54 - 02:56

Total Clouds (% Sky Obscured)

71
67
64
63
51
38
26
29
31
28
19
25
29
28
21
12
15
16
17

Low Clouds (% Sky Obscured)

69
67
64
63
50
38
25
29
31
28
19
25
29
17
5
3
2
2
3

Medium Clouds (% Sky Obscured)

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

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
1
1
2
4
3
0
0
0
0
1
3
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
4
5
6
6
7
8
8
14
14
13
13
13
13
10
11
10
10
9

Dew Point (°C)

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

Relative Humidity (%)

88
88
81
74
69
64
58
53
53
54
54
59
63
70
73
78
84
84
85

Pressure (mb)

1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1023
1023
1023
1024

Ozone (du)

394
390
390
390
390
391
391
392
391
390
390
387
385
383
382
382
382
380
378

Forecast for Bourn, Cambridgeshire, United Kingdom (52.20,-0.05)

Generated: 23/04/26 06:44:58. Forecast: 23/04/26 to 29/04/26. Timezone: UTC+1.00