Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 31

Waxing Gibbous 97%

18:06

06:06

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 06:43, Set: 19:39, Transit: 13:11. Moon - Rise: 18:06, Set: 06:06. Civil Dark: 20:13 - 06:09. Nautical Dark: 20:53 - 05:28. Astro Dark: 21:37 - 04:44

Total Clouds (% Sky Obscured)

92
97
93
96
87
95
94
75
95
71
95
96
98
94
80
65
78
46
47
70
80
81
70
53

Low Clouds (% Sky Obscured)

28
35
73
58
74
94
87
61
90
59
44
81
81
94
53
51
67
28
47
70
80
81
70
53

Medium Clouds (% Sky Obscured)

44
22
27
35
42
65
33
30
31
15
71
69
76
48
58
14
36
26
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
3
4
3
3
2
2
0
0
0
3
3
3
4
3
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 (%)

3
0
0
0
0
0
0
1
0
1
0
1
1
18
30
28
34
29
20
9
3
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
90
88
88
90
88
88
90
90
91
85
84
84
74
69
69
73
76
80
87
93
93
95
93

Pressure (mb)

1030
1030
1030
1030
1030
1030
1030
1030
1030
1031
1031
1031
1031
1030
1030
1029
1029
1029
1029
1029
1029
1030
1030
1030

Ozone (du)

310
311
310
310
311
312
314
315
317
319
323
326
325
325
323
319
316
316
317
320
321
324
326
325

Wednesday 1

Waxing Gibbous 99%

19:21

06:17

00 Bad
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 06:40, Set: 19:40, Transit: 13:10. Moon - Rise: 19:21, Set: 06:17. Civil Dark: 20:14 - 06:06. Nautical Dark: 20:55 - 05:25. Astro Dark: 21:39 - 04:41

Total Clouds (% Sky Obscured)

44
32
64
76
61
90
88
93
84
92
77
84
80
94
99
94
100
54
75
85
89
90
95
99

Low Clouds (% Sky Obscured)

44
32
64
76
61
82
88
86
73
58
77
83
80
94
98
94
100
54
75
85
73
69
67
95

Medium Clouds (% Sky Obscured)

0
0
0
0
0
8
0
10
15
55
2
3
2
4
36
0
0
0
0
0
55
76
85
99

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
0
1
0
0
3
3
4
9
1
1
1
1
46
1
67
58

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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
94
93
91
91
90
88
85
79
73
67
67
70
67
67
70
75
77
76
81
82
81
82

Pressure (mb)

1029
1029
1029
1028
1028
1028
1028
1027
1027
1027
1026
1026
1026
1025
1024
1024
1023
1023
1022
1022
1022
1022
1022
1021

Ozone (du)

325
324
323
323
325
325
324
322
323
326
330
331
330
327
329
330
331
331
331
330
330
331
333
333

Thursday 2

Full Moon 100%

20:37

06:28

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

Sun - Rise: 06:38, Set: 19:42, Transit: 13:10. Moon - Rise: 20:37, Set: 06:28. Civil Dark: 20:16 - 06:04. Nautical Dark: 20:57 - 05:23. Astro Dark: 21:42 - 04:38

Total Clouds (% Sky Obscured)

97
99
100
100
87
41
14
49
59
70
68
65
32
29
75
67
99
87
89
96
100
100
100
100

Low Clouds (% Sky Obscured)

90
85
72
72
87
38
9
45
49
64
57
62
32
26
34
41
34
49
16
11
5
2
1
1

Medium Clouds (% Sky Obscured)

96
96
93
100
4
0
0
0
0
2
0
0
0
0
0
0
30
35
38
39
98
81
95
94

High Clouds (% Sky Obscured)

46
51
100
100
15
1
0
0
0
0
68
12
0
5
15
12
99
28
76
84
95
100
100
98

ISS Passover

Visibility (miles)

9
9
9
9
9
9
1
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
16
2
14
0
1
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
8
8
8
7
9
8
7
7
9
10
9
8
7
6
7
7
7
6
6
7
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
90
90
90
93
96
98
93
88
83
76
73
69
63
62
61
60
60
68
77
87
82
83
83

Pressure (mb)

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

Ozone (du)

335
338
340
344
349
357
360
365
366
369
369
370
367
369
368
368
370
374
374
373
374
375
377
378

Friday 3

Waning Gibbous 99%

21:52

06:40

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 06:36, Set: 19:44, Transit: 13:10. Moon - Rise: 21:52, Set: 06:40. Civil Dark: 20:18 - 06:02. Nautical Dark: 20:59 - 05:20. Astro Dark: 21:44 - 04:36

Total Clouds (% Sky Obscured)

100
100
100
99
100
100
100
100
100
100
100
100
100
97
93
88
80
71
64
65
66
67
67
66

Low Clouds (% Sky Obscured)

15
17
40
58
71
85
100
99
97
96
98
99
100
92
84
75
72
71
64
65
66
67
67
66

Medium Clouds (% Sky Obscured)

89
86
80
95
97
85
50
52
46
46
55
92
77
65
81
67
55
19
3
4
6
11
6
2

High Clouds (% Sky Obscured)

100
97
94
91
68
40
14
47
68
100
75
51
34
28
21
18
25
20
14
8
4
4
9
9

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
5
9
9
9
9
9
9
9
9
3
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
1
2
13
17
21
25
26
26
23
24
28
30
23
17
11
13
3
9
9
10
11
6

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
6
6
8
10
12
13
14
15
16
16
15
15
15
17
18
19
19
17
17
16
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
1
2
1
0
3
4
5
6
7
8
9
10
10
11
11
11
11
10
10
10
9
9
9

Relative Humidity (%)

80
78
79
70
67
78
84
88
88
90
91
95
95
95
93
92
92
93
95
96
96
95
95
95

Pressure (mb)

1018
1017
1016
1016
1015
1014
1014
1013
1012
1012
1012
1012
1012
1011
1011
1011
1011
1012
1012
1013
1013
1014
1015
1015

Ozone (du)

377
377
377
376
377
378
379
379
380
380
380
381
381
380
380
378
376
377
378
377
373
373
373
373

Saturday 4

Waning Gibbous 96%

23:08

06:55

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 06:34, Set: 19:45, Transit: 13:09. Moon - Rise: 23:08, Set: 06:55. Civil Dark: 20:20 - 05:59. Nautical Dark: 21:01 - 05:18. Astro Dark: 21:46 - 04:33

Total Clouds (% Sky Obscured)

66
77
87
97
97
98
98
95
95
95
100
95
95
100
99
99
99
100
100
81
62
46
60
71

Low Clouds (% Sky Obscured)

64
63
58
51
67
84
93
94
91
88
77
66
55
63
72
77
74
67
60
54
48
42
41
39

Medium Clouds (% Sky Obscured)

2
2
0
0
20
38
56
64
62
65
65
60
60
39
26
21
18
15
7
3
1
0
2
5

High Clouds (% Sky Obscured)

14
40
65
92
86
78
73
54
58
75
80
80
80
73
70
59
59
69
89
81
62
46
36
30

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 (%)

1
0
0
0
0
0
0
1
0
0
0
0
0
1
2
1
2
1
0
0
0
0
7
10

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
13
12
12
12
12
11
13
15
16
18
18
19
19
19
19
19
18
17
18
18
19
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
91
87
90
90
87
85
88
87
83
76
74
69
69
70
70
72
73
75
77
81
83
80

Pressure (mb)

1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1013
1013
1012
1012
1012
1011
1011

Ozone (du)

375
375
374
373
372
370
370
371
370
368
368
367
368
366
364
362
360
359
358
357
359
360
361
362

Sunday 5

Waning Gibbous 91%

No Rise

07:13

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

Sun - Rise: 06:31, Set: 19:47, Transit: 13:09. Moon - Rise: No Rise, Set: 07:13. Civil Dark: 20:21 - 05:57. Nautical Dark: 21:03 - 05:15. Astro Dark: 21:49 - 04:30

Total Clouds (% Sky Obscured)

81
87
94
100
100
100
100
100
100
100
100
100
100
86
61
42
38
25
21
16
15
10
5
5

Low Clouds (% Sky Obscured)

41
55
71
86
82
76
71
69
69
69
65
59
54
40
26
15
8
2
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

14
32
46
61
73
84
95
95
93
91
94
96
99
67
35
5
17
25
21
16
15
10
5
5

High Clouds (% Sky Obscured)

32
50
72
96
97
99
100
100
100
100
97
94
91
62
32
3
7
9
21
16
15
10
5
5

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 (%)

12
9
7
1
5
9
7
16
18
21
24
26
29
34
38
41
35
28
8
13
9
2
3
1

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
18
17
17
15
13
13
12
12
12
12
12
12
11
11
11
9
7
6
4
2
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
74
74
74
74
77
80
84
84
85
85
80
74
68
69
69
72
73
73
75
75
74
74
76

Pressure (mb)

1011
1012
1012
1012
1012
1013
1014
1014
1015
1016
1017
1018
1018
1018
1019
1019
1019
1020
1020
1020
1020
1020
1021
1020

Ozone (du)

363
364
365
366
368
371
374
377
381
386
391
393
394
395
391
387
383
380
378
376
375
373
371
372

Monday 6

Waning Gibbous 85%

00:21

07:38

Sun - Rise: 06:29, Set: 19:49, Transit: 13:09. Moon - Rise: 00:21, Set: 07:38. Civil Dark: 20:23 - 05:55. Nautical Dark: 21:05 - 05:13. Astro Dark: 21:51 - 04:27

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Swindon, Swindon, United Kingdom (51.56,-1.78)

Generated: 31/03/26 00:30:37. Forecast: 31/03/26 to 06/04/26. Timezone: UTC+1.00