Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 1

Waning Gibbous 88%

21:48

08:30

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

Sun - Rise: 05:25, Set: 20:49, Transit: 13:07. Moon - Rise: 21:48, Set: 08:30. Civil Dark: 21:30 - 04:45. Nautical Dark: 22:25 - 03:51. Astro Dark: 23:42 - 02:35

Total Clouds (% Sky Obscured)

5
7
0
0
0
13
0
63
32
43
28
54
49
33
24
27
29
26
54
87
97
85
42
40

Low Clouds (% Sky Obscured)

0
0
0
0
0
9
0
0
3
3
2
8
2
3
3
3
3
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

5
0
0
0
0
0
0
27
22
31
18
18
18
9
3
1
1
0
0
4
48
13
8
15

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
27
2
2
2
23
29
28
24
27
29
26
54
83
93
80
28
25

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

Chance of Frost

Temperature (°C)

13
14
16
19
20
21
23
23
24
24
25
25
24
24
22
20
18
17
16
16
15
14
14
13

Feels Like (°C)

12
14
16
18
20
20
22
22
21
22
23
23
22
21
20
18
15
12
12
11
10
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

64
58
50
43
37
32
28
26
24
23
23
22
23
24
29
33
35
39
41
47
49
53
58
63

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1018

Ozone (du)

371
368
367
364
356
349
345
341
339
336
337
336
335
335
333
333
332
331
335
334
335
336
336
335

Sunday 2

Waning Gibbous 80%

21:59

09:46

06 OK
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 OK

Sun - Rise: 05:27, Set: 20:48, Transit: 13:07. Moon - Rise: 21:59, Set: 09:46. Civil Dark: 21:28 - 04:47. Nautical Dark: 22:23 - 03:53. Astro Dark: 23:38 - 02:39

Total Clouds (% Sky Obscured)

43
70
100
99
62
67
81
100
85
89
100
97
100
100
100
100
100
100
100
100
100
71
59
35

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
18
17
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
12
10
21
27
28
27
31
56
40
44
36
22
16
34
29
75
98
82
55
36
21
21
20

High Clouds (% Sky Obscured)

28
70
100
96
24
42
50
100
66
61
100
91
100
100
100
100
100
100
100
100
100
68
38
14

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)

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

Chance of Frost

Temperature (°C)

13
14
16
18
21
23
25
26
27
27
27
27
26
25
23
21
20
19
18
17
16
16
15
15

Feels Like (°C)

11
12
14
15
19
21
23
23
24
24
24
24
22
21
19
18
17
16
15
15
14
14
15
13

Dew Point (°C)

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

Relative Humidity (%)

66
63
56
49
42
34
29
25
22
21
20
21
25
27
32
41
48
49
55
62
72
78
83
84

Pressure (mb)

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

Ozone (du)

333
332
331
333
334
333
332
331
331
331
330
329
328
327
326
327
328
330
331
331
332
333
334
336

Monday 3

Waning Gibbous 71%

22:11

11:03

06 Bad
07 Bad
08 Bad
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 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 Bad
05 Bad

Sun - Rise: 05:29, Set: 20:46, Transit: 13:07. Moon - Rise: 22:11, Set: 11:03. Civil Dark: 21:26 - 04:49. Nautical Dark: 22:20 - 03:55. Astro Dark: 23:34 - 02:43

Total Clouds (% Sky Obscured)

59
60
84
65
36
97
100
100
100
100
98
85
96
81
85
40
100
100
81
67
54
35
57
81

Low Clouds (% Sky Obscured)

0
0
0
0
0
27
0
4
9
0
0
0
0
12
0
0
2
0
0
0
0
0
6
11

Medium Clouds (% Sky Obscured)

0
60
53
33
36
46
16
23
5
23
29
21
21
13
15
20
25
14
4
31
3
0
7
18

High Clouds (% Sky Obscured)

54
36
59
19
24
94
100
100
100
100
96
73
91
58
74
8
100
100
75
54
54
35
57
81

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)

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

Chance of Frost

Temperature (°C)

15
16
19
21
24
26
28
30
31
31
31
31
31
29
27
24
22
21
20
19
19
18
17
17

Feels Like (°C)

14
15
16
19
23
25
27
29
30
30
29
30
30
27
24
22
22
19
19
20
19
18
17
17

Dew Point (°C)

12
12
12
12
12
11
11
10
9
8
7
7
7
9
15
16
17
16
16
16
15
15
14
14

Relative Humidity (%)

84
77
65
54
45
39
34
28
25
22
21
21
23
28
49
62
71
73
76
80
80
80
81
82

Pressure (mb)

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

Ozone (du)

338
332
331
328
326
325
325
326
325
325
325
327
328
330
331
331
329
329
327
325
320
320
318
318

Tuesday 4

Waning Gibbous 60%

22:24

12:24

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

Sun - Rise: 05:30, Set: 20:44, Transit: 13:06. Moon - Rise: 22:24, Set: 12:24. Civil Dark: 21:24 - 04:50. Nautical Dark: 22:18 - 03:58. Astro Dark: 23:29 - 02:47

Total Clouds (% Sky Obscured)

91
64
100
100
87
73
42
41
63
67
71
33
28
32
69
39
34
26
20
21
25
29
30
28

Low Clouds (% Sky Obscured)

17
24
30
40
39
34
27
27
57
62
66
27
26
29
30
33
28
24
20
21
25
29
30
28

Medium Clouds (% Sky Obscured)

22
14
63
48
85
73
19
3
7
11
7
7
4
3
51
3
3
3
3
0
0
0
0
0

High Clouds (% Sky Obscured)

88
54
100
100
86
71
7
3
4
2
0
2
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
2
2
1
2
1
0
3
13
9
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
4
3
6
8
10
12
12
13
17
16
15
17
16
14
13
12
11
10
9
9
8
9
10

Chance of Frost

Temperature (°C)

18
18
20
22
24
25
27
28
28
27
27
27
26
25
24
23
21
20
19
17
17
16
16
16

Feels Like (°C)

17
19
23
22
23
23
23
26
27
25
24
23
23
23
22
20
20
19
18
18
17
17
16
16

Dew Point (°C)

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

Relative Humidity (%)

82
75
65
59
48
34
26
24
29
44
42
37
35
38
43
47
53
61
69
76
79
82
85
85

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1011
1011
1012
1012
1012
1012
1012
1013

Ozone (du)

317
315
313
314
314
313
313
312
312
312
313
312
311
311
312
313
314
315
314
314
314
315
315
315

Wednesday 5

Waning Gibbous 60%

22:42

13:48

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

Sun - Rise: 05:32, Set: 20:43, Transit: 13:06. Moon - Rise: 22:42, Set: 13:48. Civil Dark: 21:22 - 04:52. Nautical Dark: 22:15 - 04:00. Astro Dark: 23:25 - 02:51

Total Clouds (% Sky Obscured)

23
28
30
32
35
51
60
54
63
67
70
66
88
36
37
42
50
57
70
80
81
82
69
56

Low Clouds (% Sky Obscured)

23
22
24
22
20
49
60
46
60
48
46
22
72
36
37
42
50
28
0
0
0
0
2
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
6
11
20
22
24
25
1
1
2
11
18
26
24
19
22
22
15

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
2
21
44
70
71
70
62
46
27

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
1
3
3
0
0
0
0
0
0
4
6
7
5
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
14
15
15
16
17
18
17
15
15
16
15
13
11
10
10
9
9
8
8
8
7

Chance of Frost

Temperature (°C)

16
16
18
19
21
22
24
24
24
24
24
24
24
23
22
21
19
18
16
15
15
14
14
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
81
70
57
48
43
41
47
46
45
43
36
35
44
49
54
60
67
74
83
86
89
92
89

Pressure (mb)

1013
1013
1014
1014
1014
1013
1013
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018
1018
1018

Ozone (du)

315
316
317
316
318
318
317
316
314
314
315
316
315
316
317
317
318
319
321
322
325
327
330
332

Thursday 6

Third Quarter 49%

23:07

15:15

06 OK
07 Bad
08 Bad
09 OK
10 OK
11 OK
12 OK
13 OK
14 OK
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: 05:33, Set: 20:41, Transit: 13:06. Moon - Rise: 23:07, Set: 15:15. Civil Dark: 21:20 - 04:54. Nautical Dark: 22:13 - 04:02. Astro Dark: 23:21 - 02:55

Total Clouds (% Sky Obscured)

43
52
55
47
44
45
46
45
44
62
76
76
70
65
66
71
75
79
83
91
95
100
99
99

Low Clouds (% Sky Obscured)

5
8
11
14
14
14
14
11
7
3
6
11
18
17
17
12
15
16
19
16
13
12
20
28

Medium Clouds (% Sky Obscured)

12
10
11
17
17
17
24
26
23
25
20
20
25
25
25
30
30
35
35
35
25
30
31
28

High Clouds (% Sky Obscured)

6
4
2
0
0
0
1
2
2
3
13
23
30
35
45
51
58
64
71
80
86
90
92
95

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
3
5
4
16
18
13
28
36

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)

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

Chance of Frost

Temperature (°C)

14
14
16
17
19
20
22
23
23
24
24
24
24
23
21
20
18
17
16
16
15
15
15
15

Feels Like (°C)

14
13
14
14
16
16
17
17
23
22
21
21
21
22
21
21
21
20
20
20
14
14
14
13

Dew Point (°C)

12
12
11
10
10
8
6
5
3
2
1
1
1
0
2
3
4
6
7
8
10
11
13
12

Relative Humidity (%)

87
84
72
62
54
45
37
30
27
24
21
21
21
21
26
33
40
46
53
61
69
78
87
86

Pressure (mb)

1019
1019
1019
1020
1020
1020
1020
1019
1019
1019
1019
1019
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

334
336
337
338
339
340
340
340
337
335
333
332
331
329
327
324
321
319
317
314
313
312
310
311

Friday 7

Waning Crescent 37%

23:44

16:42

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

Sun - Rise: 05:35, Set: 20:39, Transit: 13:06. Moon - Rise: 23:44, Set: 16:42. Civil Dark: 21:18 - 04:56. Nautical Dark: 22:10 - 04:04. Astro Dark: 23:17 - 02:58

Total Clouds (% Sky Obscured)

99
98
97
96
96
98
100
100
100
100
95
93
89
86
82
78
83
88
93

Low Clouds (% Sky Obscured)

41
41
40
40
48
56
64
55
46
32
41
53
63
55
54
53
53
52
47

Medium Clouds (% Sky Obscured)

29
42
57
69
66
60
56
68
79
91
84
77
68
55
43
30
28
26
24

High Clouds (% Sky Obscured)

99
98
97
96
96
98
100
99
99
98
90
82
66
60
49
43
43
50
54

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

Precipitation Probability (%)

44
54
55
51
44
33
18
19
21
27
39
46
49
63
60
60
55
47
28

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0.3
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
12
12
12
14
15
16
20
20
20
18
18
17
19
20
20
20
19

Dew Point (°C)

13
12
10
9
8
7
7
6
5
5
4
2
0
-2
-0
2
3
3
3

Relative Humidity (%)

87
86
73
64
55
49
44
39
36
34
31
28
26
23
27
33
38
39
39

Pressure (mb)

1019
1019
1019
1019
1019
1018
1018
1018
1017
1017
1016
1016
1016
1015
1015
1016
1016
1015
1015

Ozone (du)

312
313
314
315
316
318
319
321
323
325
327
326
325
325
324
324
323
323
324

Forecast for Welwyn Garden City, Hertfordshire, United Kingdom (51.80,-0.21)

Generated: 01/08/26 06:30:41. Forecast: 01/08/26 to 07/08/26. Timezone: UTC+1.00