Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 14%

06:55

01:07

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

Sun - Rise: 05:52, Set: 20:08, Transit: 13:01. Moon - Rise: 06:55, Set: 01:07. Civil Dark: 20:45 - 05:15. Nautical Dark: 21:31 - 04:29. Astro Dark: 22:24 - 03:35

Total Clouds (% Sky Obscured)

49
25
19
1
7
55
86
80
53
79
96
78
48
12
0
36
22
33
37
50
78
63
76
68

Low Clouds (% Sky Obscured)

0
0
0
0
7
55
52
46
0
0
87
33
26
12
0
36
22
33
37
50
78
63
76
68

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
22
16
15
27
26
25
13
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

32
25
17
1
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
6
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
4
17
4
5
4
2
2
2
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)

2
2
2
7
8
9
10
10
10
9
9
11
10
10
9
8
7
7
7
7
7
7
7
8

Chance of Frost

Temperature (°C)

0
2
5
7
9
10
11
12
12
12
12
12
11
10
8
7
6
6
5
4
4
4
4
4

Feels Like (°C)

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

Dew Point (°C)

-1
-1
1
3
4
4
4
4
5
6
6
5
5
5
5
5
5
5
5
4
3
3
4
4

Relative Humidity (%)

89
86
78
71
68
65
61
58
65
68
66
64
67
69
81
88
93
94
98
96
96
96
96
100

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1024
1025
1025
1025
1025
1026
1026
1026
1026
1026

Ozone (du)

400
400
401
402
405
408
412
412
413
414
414
413
411
410
410
413
416
419
424
426
425
426
426
425

Tuesday 21

Waxing Crescent 24%

07:47

02:11

06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
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: 05:50, Set: 20:10, Transit: 13:01. Moon - Rise: 07:47, Set: 02:11. Civil Dark: 20:46 - 05:13. Nautical Dark: 21:33 - 04:27. Astro Dark: 22:27 - 03:32

Total Clouds (% Sky Obscured)

65
70
60
56
93
72
86
84
75
66
13
1
8
0
0
0
0
0
10
28
36
42
42
40

Low Clouds (% Sky Obscured)

63
65
60
56
93
62
47
52
54
41
0
0
0
0
0
0
0
0
10
28
36
41
42
39

Medium Clouds (% Sky Obscured)

1
7
0
1
6
8
29
35
31
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
1
4
43
5
27
9
0
0
0
0
0
0
0
0
0
0
1
2
7

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
1
3
17
3
15
1
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)

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

Chance of Frost

Temperature (°C)

4
4
6
8
9
10
12
14
14
13
14
13
12
10
9
7
6
5
5
5
5
5
5
5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
94
86
78
68
61
61
72
75
61
57
64
68
73
72
75
81
85
86
88
93
94
94
94

Pressure (mb)

1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1026
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

422
419
417
416
416
414
411
408
405
402
400
400
397
395
395
395
394
395
396
396
395
393
390
389

Wednesday 22

Waxing Crescent 35%

08:58

02:54

06 Bad
07 OK
08 OK
09 OK
10 Bad
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 OK
03 OK
04 Bad
05 Bad

Sun - Rise: 05:48, Set: 20:12, Transit: 13:01. Moon - Rise: 08:58, Set: 02:54. Civil Dark: 20:48 - 05:11. Nautical Dark: 21:35 - 04:24. Astro Dark: 22:30 - 03:29

Total Clouds (% Sky Obscured)

44
12
24
37
54
8
3
3
1
1
1
0
0
0
0
0
0
0
0
13
24
33
40
47

Low Clouds (% Sky Obscured)

40
12
24
23
42
8
0
0
0
0
0
0
0
0
0
0
0
0
0
12
22
31
34
40

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)

26
4
5
37
40
2
3
2
0
1
1
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 (%)

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)

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

Chance of Frost

Temperature (°C)

5
6
7
9
11
12
13
14
15
15
15
14
13
12
10
8
7
6
5
5
4
3
3
3

Feels Like (°C)

2
2
4
5
5
6
9
9
10
10
10
10
10
9
7
5
4
3
3
2
2
1
1
1

Dew Point (°C)

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

Relative Humidity (%)

96
93
85
76
66
59
55
53
53
52
54
60
64
66
66
69
74
78
79
80
85
89
91
93

Pressure (mb)

1028
1028
1028
1029
1028
1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1030
1030
1031
1031
1031
1031
1031
1031
1032

Ozone (du)

387
385
381
378
378
377
376
373
371
371
372
374
379
383
384
387
393
395
390
387
387
389
389
387

Thursday 23

Waxing Crescent 46%

10:21

03:23

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

Sun - Rise: 05:46, Set: 20:13, Transit: 13:01. Moon - Rise: 10:21, Set: 03:23. Civil Dark: 20:50 - 05:09. Nautical Dark: 21:37 - 04:21. Astro Dark: 22:33 - 03:25

Total Clouds (% Sky Obscured)

58
47
39
32
30
26
21
15
7
0
0
0
0
0
0
0
22
44
65
71
73
67
67
67

Low Clouds (% Sky Obscured)

46
40
33
29
30
26
21
15
7
0
0
0
0
0
0
0
19
38
54
55
57
58
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)

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 (%)

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

Chance of Frost

Temperature (°C)

2
3
5
7
9
11
12
14
14
15
15
14
14
12
10
8
6
5
4
4
3
3
2
2

Feels Like (°C)

0
1
2
5
6
7
9
11
11
11
12
12
11
9
7
6
4
3
2
2
1
1
0
0

Dew Point (°C)

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

Relative Humidity (%)

93
89
82
74
66
57
53
50
50
51
53
60
67
71
76
82
85
90
91
93
94
94
94
93

Pressure (mb)

1032
1032
1032
1032
1032
1032
1031
1031
1030
1030
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028

Ozone (du)

384
382
382
383
383
384
383
381
379
379
379
379
377
376
377
377
379
378
378
379
381
380
379
379

Friday 24

First Quarter 58%

11:48

03:44

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

Sun - Rise: 05:44, Set: 20:15, Transit: 13:00. Moon - Rise: 11:48, Set: 03:44. Civil Dark: 20:52 - 05:07. Nautical Dark: 21:39 - 04:19. Astro Dark: 22:36 - 03:22

Total Clouds (% Sky Obscured)

72
67
62
57
71
85
95
66
42
18
12
6
0
66
46
25
19
9
0
18
36
55
58
61

Low Clouds (% Sky Obscured)

64
63
62
57
53
46
39
26
14
0
0
0
0
31
30
25
19
9
0
18
36
55
58
58

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
27
7
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
1
2
2
30
58
85
58
35
14
11
6
0
48
25
1
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 (%)

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)

8
9
10
11
11
12
12
12
12
12
12
12
11
10
8
7
4
3
3
2
2
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
86
76
66
60
56
55
51
49
49
52
59
64
68
73
78
85
86
88
91
91
93
93
91

Pressure (mb)

1028
1028
1028
1028
1027
1027
1027
1026
1026
1025
1025
1025
1024
1024
1024
1024
1025
1025
1025
1025
1024
1024
1024
1024

Ozone (du)

379
377
373
368
366
365
364
364
366
368
367
367
368
368
369
369
369
367
366
364
364
364
364
365

Saturday 25

Waxing Gibbous 68%

13:12

03:58

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

Sun - Rise: 05:42, Set: 20:17, Transit: 13:00. Moon - Rise: 13:12, Set: 03:58. Civil Dark: 20:54 - 05:04. Nautical Dark: 21:42 - 04:16. Astro Dark: 22:39 - 03:18

Total Clouds (% Sky Obscured)

65
47
28
10
26
43
59
60
61
62
50
39
27
20
13
6
19
32
46
51
55
58
57
55

Low Clouds (% Sky Obscured)

58
39
19
0
17
33
50
54
49
50
43
37
26
18
9
0
15
30
43
47
50
53
54
55

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
3
5
8
6
3
0
0
0
0
0
0
0
3
6
6
14
19
27
27
27
23
20
16

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-1
1
2
3
4
5
6
11
11
11
11
10
10
7
7
7
6
5
4
-1
-1
0
-0

Dew Point (°C)

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

Relative Humidity (%)

88
86
75
66
59
56
54
51
52
52
52
58
64
71
77
82
90
88
86
85
89
91
96
93

Pressure (mb)

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

Ozone (du)

366
368
370
372
374
378
382
385
387
388
390
388
387
385
387
388
390
390
391
391
391
391
391
391

Sunday 26

Waxing Gibbous 78%

14:32

04:11

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

Sun - Rise: 05:40, Set: 20:18, Transit: 13:00. Moon - Rise: 14:32, Set: 04:11. Civil Dark: 20:56 - 05:02. Nautical Dark: 21:44 - 04:14. Astro Dark: 22:42 - 03:15

Total Clouds (% Sky Obscured)

52
56
61
64
64
64
66
69
61
43
36
39
42
57
79
84
90
95
99

Low Clouds (% Sky Obscured)

52
55
54
60
58
56
54
53
53
43
36
33
24
17
13
10
7
5
0

Medium Clouds (% Sky Obscured)

0
0
1
1
2
2
4
6
9
11
13
18
16
24
34
45
43
40
38

High Clouds (% Sky Obscured)

15
10
7
6
5
5
2
1
1
0
32
39
42
57
79
84
90
95
99

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
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)

4
4
6
8
10
10
10
10
11
11
12
11
12
12
11
10
9
9
8

Chance of Frost

Temperature (°C)

2
2
4
6
8
9
10
11
12
12
12
11
10
9
8
6
5
4
3

Feels Like (°C)

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

Dew Point (°C)

1
1
1
2
2
2
3
3
3
3
3
4
4
4
4
3
3
2
2

Relative Humidity (%)

93
91
82
74
66
62
59
55
56
55
55
60
65
70
74
78
85
88
91

Pressure (mb)

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

Ozone (du)

392
392
390
388
386
387
389
390
390
390
390
389
388
387
388
389
390
391
392

Forecast for Great Missenden, Buckinghamshire, United Kingdom (51.70,-0.70)

Generated: 20/04/26 06:07:51. Forecast: 20/04/26 to 26/04/26. Timezone: UTC+1.00