Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 19

Waning Crescent 36%

No Rise

16:07

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: 05:10, Set: 21:07, Transit: 13:08. Moon - Rise: No Rise, Set: 16:07. Civil Dark: 21:50 - 04:27. Nautical Dark: 22:50 - 03:26. Astro Dark: N/A - 01:26

Total Clouds (% Sky Obscured)

63
71
78
83
100
100
100
100
100
100
100
100
100
100
79
65
85
83
34
96
100
100
100
100

Low Clouds (% Sky Obscured)

0
12
48
61
46
84
87
84
91
84
85
81
81
65
45
65
61
63
34
13
0
0
0
0

Medium Clouds (% Sky Obscured)

63
71
78
83
100
100
100
98
91
100
100
96
100
97
79
7
16
18
7
3
3
65
65
100

High Clouds (% Sky Obscured)

63
71
78
83
100
100
100
100
100
95
100
100
100
53
16
2
2
16
34
95
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
3
5
2
8
5
2
2
5
9
9
9
7
5
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
Light Rain
Moderate Rain
Moderate Rain
Heavy Rain
Moderate Rain
Light Rain
Moderate Rain
Moderate Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

8
12
37
95
95
95
95
95
95
95
95
95
69
61
56
50
40
32
17
5
0
0
2
5

Precipitation Amount (mm)

0
0
0
2.2
3.4
7.3
10.3
2.5
1.6
3.4
5.2
2.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
21
20
18
17
17
17
17
17
17
17
17
18
18
19
20
22
23
23
21
20
18
17
17

Feels Like (°C)

20
19
19
17
17
17
17
17
18
18
19
19
19
20
20
20
23
22
21
18
18
17
16
16

Dew Point (°C)

15
14
13
14
16
16
16
16
16
16
17
17
17
17
17
18
17
16
13
12
12
14
14
13

Relative Humidity (%)

65
67
66
74
96
96
98
98
96
95
95
96
93
92
91
89
75
65
55
55
61
73
78
77

Pressure (mb)

1010
1010
1009
1008
1008
1007
1007
1007
1007
1007
1006
1006
1006
1005
1005
1005
1004
1004
1004
1004
1004
1004
1004
1004

Ozone (du)

317
317
315
315
317
319
316
322
325
325
326
328
330
332
332
337
333
331
330
328
327
327
329
332

Sunday 20

Waning Crescent 25%

00:22

17:36

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 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:11, Set: 21:06, Transit: 13:08. Moon - Rise: 00:22, Set: 17:36. Civil Dark: 21:48 - 04:28. Nautical Dark: 22:48 - 03:28. Astro Dark: 00:50 - 01:38

Total Clouds (% Sky Obscured)

100
100
96
100
100
100
100
100
100
100
100
75
64
88
81
48
49
39
59
58
71
99
97
98

Low Clouds (% Sky Obscured)

0
29
28
39
45
73
83
90
97
63
68
75
64
75
72
48
48
39
32
15
9
0
0
29

Medium Clouds (% Sky Obscured)

97
100
96
98
78
99
100
100
44
11
36
50
0
24
16
0
1
3
2
15
16
8
97
84

High Clouds (% Sky Obscured)

100
100
74
74
100
92
93
100
100
100
100
32
2
35
0
2
0
1
29
23
43
95
73
92

ISS Passover

Visibility (miles)

9
9
9
6
9
9
3
8
9
7
7
9
9
9
5
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
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

12
20
32
25
23
86
95
95
69
65
40
25
15
51
39
20
4
1
0
2
3
6
12
24

Precipitation Amount (mm)

0
0
0
0
0
0.5
0.9
0.7
0.3
0.3
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
8
8
8
7
9
11
12
14
15
14
15
13
17
17
17
15
14
13
12
9
8
9
9

Chance of Frost

Temperature (°C)

16
17
16
16
16
16
17
17
17
17
18
19
20
20
18
19
19
20
19
19
18
17
16
16

Feels Like (°C)

15
15
15
15
15
15
14
15
14
14
15
16
17
17
14
15
17
16
17
17
18
16
14
13

Dew Point (°C)

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

Relative Humidity (%)

77
78
87
92
92
92
95
95
90
86
85
82
81
56
68
55
53
46
47
53
63
74
78
74

Pressure (mb)

1004
1003
1003
1002
1001
1001
1001
1000
1000
1000
1000
1000
1000
1000
1001
1001
1001
1001
1001
1001
1001
1001
1001
1001

Ozone (du)

335
335
336
332
331
334
333
338
343
344
346
347
348
351
356
354
353
353
352
352
351
350
351
350

Monday 21

Waning Crescent 15%

00:55

18:58

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: 05:12, Set: 21:04, Transit: 13:08. Moon - Rise: 00:55, Set: 18:58. Civil Dark: 21:47 - 04:30. Nautical Dark: 22:46 - 03:30. Astro Dark: 00:39 - 01:47

Total Clouds (% Sky Obscured)

100
93
100
92
100
99
100
100
100
99
95
86
100
100
96
91
94
100
92
90
87
84
94
97

Low Clouds (% Sky Obscured)

27
40
50
42
49
58
51
57
59
69
59
68
64
66
53
37
43
43
27
44
52
67
67
71

Medium Clouds (% Sky Obscured)

92
93
87
58
39
29
28
27
28
28
63
86
69
17
27
26
29
99
71
25
25
26
27
46

High Clouds (% Sky Obscured)

99
59
100
81
100
97
100
99
100
98
67
24
100
89
77
38
86
86
30
19
10
3
10
10

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

85
95
95
95
67
67
47
37
49
78
87
87
63
65
70
58
45
45
19
21
23
25
24
22

Precipitation Amount (mm)

0.5
1
1.7
0.6
0
0.2
0
0
0
0.5
0.6
0.6
0.2
0.2
0.3
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
15
15
15
15
15
15
15
16
17
17
18
19
19
20
20
21
20
19
19
19
18
17
17

Feels Like (°C)

14
13
14
13
13
14
14
16
17
17
17
18
18
17
17
18
17
17
17
18
18
17
17
15

Dew Point (°C)

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

Relative Humidity (%)

78
86
95
96
93
96
96
90
85
78
74
72
72
69
57
51
46
54
69
64
65
70
74
79

Pressure (mb)

1001
1001
1000
999
999
999
999
999
999
1000
1000
1000
1001
1001
1001
1002
1002
1003
1003
1003
1004
1005
1005
1006

Ozone (du)

346
345
345
348
349
351
349
348
347
345
346
346
347
347
347
349
350
350
352
352
351
345
344
345

Tuesday 22

Waning Crescent 8%

01:43

20:04

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: 05:14, Set: 21:03, Transit: 13:08. Moon - Rise: 01:43, Set: 20:04. Civil Dark: 21:45 - 04:31. Nautical Dark: 22:44 - 03:32. Astro Dark: 00:30 - 01:54

Total Clouds (% Sky Obscured)

95
95
91
92
94
92
95
93
90
100
100
100
100
97
93
90
80
70
62
67
72
77
85
92

Low Clouds (% Sky Obscured)

75
74
73
72
73
74
75
71
63
60
56
58
58
53
48
55
58
58
53
59
56
41
47
44

Medium Clouds (% Sky Obscured)

62
74
83
82
77
71
62
55
41
38
32
34
40
55
25
46
47
35
34
48
58
75
74
74

High Clouds (% Sky Obscured)

1
20
41
62
41
21
2
26
54
95
97
98
100
93
85
80
69
54
42
22
32
25
50
75

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 (%)

21
23
25
27
26
20
8
13
13
8
17
18
11
21
22
14
19
20
13
18
17
6
5
4

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

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
15
16
17
18
18
19
20
21
21
22
22
22
21
21
20
18
17
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
96
98
96
96
98
96
87
73
64
58
52
47
43
40
39
42
45
47
50
56
64
67
66

Pressure (mb)

1006
1007
1007
1007
1007
1008
1008
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1011
1012
1012
1012

Ozone (du)

347
344
338
337
337
338
338
337
336
336
334
335
336
336
338
338
337
337
338
337
338
339
340
340

Wednesday 23

Waning Crescent 3%

02:49

20:51

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: 05:15, Set: 21:02, Transit: 13:08. Moon - Rise: 02:49, Set: 20:51. Civil Dark: 21:44 - 04:33. Nautical Dark: 22:42 - 03:35. Astro Dark: 00:23 - 02:00

Total Clouds (% Sky Obscured)

100
94
89
83
84
85
87
89
90
93
98
99
100
100
100
100
100
100
100
97
94
91
92
93

Low Clouds (% Sky Obscured)

25
27
22
27
44
60
75
68
61
53
48
43
38
45
52
60
62
64
66
62
58
54
64
74

Medium Clouds (% Sky Obscured)

73
74
76
75
64
49
39
38
28
30
37
44
52
56
60
59
36
38
35
27
17
11
12
12

High Clouds (% Sky Obscured)

100
75
47
20
20
15
20
35
50
66
65
68
76
76
60
50
55
55
45
24
23
24
35
46

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
3
3
0
0
0
0
0
0
0
15
8
2
7
11
18
23
29
32
32
26
7
8
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
6
6
5
6
6
7
8
9
9
9
9
9
8
8
7
8
9
7
6
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
13
12
13
13
13
15
17
18
18
18
19
18
18
18
19
19
19
17
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

66
67
70
79
84
86
87
80
73
65
59
55
51
50
46
42
40
44
48
53
54
56
59
64

Pressure (mb)

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

Ozone (du)

340
340
341
340
340
338
338
338
339
338
339
344
344
341
342
343
344
341
338
336
334
332
330
330

Thursday 24

New Moon 0%

04:09

21:22

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: 05:16, Set: 21:00, Transit: 13:08. Moon - Rise: 04:09, Set: 21:22. Civil Dark: 21:42 - 04:35. Nautical Dark: 22:40 - 03:37. Astro Dark: 00:17 - 02:06

Total Clouds (% Sky Obscured)

95
91
86
80
83
86
81
74
68
67
70
73
79
81
86
89
86
88
89
89
96
96
68
37

Low Clouds (% Sky Obscured)

83
76
67
59
66
61
62
58
55
52
57
59
56
54
56
60
43
27
11
7
4
0
0
0

Medium Clouds (% Sky Obscured)

8
12
14
16
15
14
13
9
6
7
30
54
73
63
63
63
44
23
1
1
2
2
2
2

High Clouds (% Sky Obscured)

45
21
10
2
2
2
2
0
0
0
3
4
4
26
48
70
75
79
79
83
82
70
39
22

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 (%)

5
8
8
3
5
4
0
1
1
0
0
0
0
1
1
0
0
0
0
0
0
0
8
12

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

Chance of Frost

Temperature (°C)

16
15
14
14
13
14
14
15
16
17
19
19
19
19
20
21
22
22
22
22
21
20
19
18

Feels Like (°C)

18
18
13
13
14
13
13
13
15
15
15
16
18
18
17
18
18
19
21
22
20
20
20
18

Dew Point (°C)

10
11
11
11
11
11
11
11
10
10
10
11
12
12
12
12
12
13
15
17
17
18
18
17

Relative Humidity (%)

69
78
80
83
86
82
80
78
69
63
57
59
63
65
59
54
50
55
63
69
79
86
96
95

Pressure (mb)

1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1015
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015

Ozone (du)

330
330
327
324
320
319
318
318
315
312
309
307
305
302
301
300
298
298
297
297
297
298
299
300

Friday 25

Waxing Crescent 1%

05:35

21:44

Sun - Rise: 05:18, Set: 20:59, Transit: 13:08. Moon - Rise: 05:35, Set: 21:44. Civil Dark: 21:41 - 04:36. Nautical Dark: 22:38 - 03:39. Astro Dark: 00:11 - 02:11

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 Guildford, Surrey, United Kingdom (51.24,-0.57)

Generated: 19/07/25 00:35:10. Forecast: 19/07/25 to 25/07/25. Timezone: UTC+1.00