Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 13

Waxing Crescent 4%

07:52

20:58

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

Sun - Rise: 05:44, Set: 20:25, Transit: 13:05. Moon - Rise: 07:52, Set: 20:58. Civil Dark: 21:06 - 05:07. Nautical Dark: 21:55 - 04:18. Astro Dark: 22:55 - 03:19

Total Clouds (% Sky Obscured)

0
15
5
48
67
7
0
0
0
2
2
2
3
6
5
18
67
79
77
61
73
70
89
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
10
12
7
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
32
32
35
29
34
38
52
68

High Clouds (% Sky Obscured)

0
8
4
43
67
6
0
0
0
2
2
2
2
6
5
18
22
54
17
2
16
59
80
100

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
1
2
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
5
5
6
5
5
5
5
6
6
6
8
8
7
7
7
7
7
7
7
7
7
7
6

Chance of Frost

Temperature (°C)

27
25
24
23
22
21
20
19
19
18
20
22
24
26
28
30
31
32
32
32
32
32
31
29

Feels Like (°C)

27
26
24
23
21
20
20
20
20
19
21
23
25
27
29
30
30
30
30
31
32
30
30
28

Dew Point (°C)

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

Relative Humidity (%)

29
31
35
42
47
51
55
62
71
73
69
61
52
43
37
31
28
26
24
23
23
24
25
33

Pressure (mb)

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

Ozone (du)

302
302
301
301
301
302
304
306
306
307
307
307
307
307
308
308
308
308
308
309
309
308
307
307

Friday 14

Waxing Crescent 10%

09:14

20:58

21 Bad
22 Bad
23 Bad
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 OK
14 Good
15 Bad
16 OK
17 Bad
18 Bad
19 Bad
20 Bad

Sun - Rise: 05:46, Set: 20:23, Transit: 13:05. Moon - Rise: 09:14, Set: 20:58. Civil Dark: 21:03 - 05:08. Nautical Dark: 21:52 - 04:20. Astro Dark: 22:51 - 03:22

Total Clouds (% Sky Obscured)

95
100
100
100
100
99
99
95
92
64
56
56
58
73
61
61
44
14
76
28
63
68
69
67

Low Clouds (% Sky Obscured)

5
0
0
0
10
22
27
25
31
37
33
32
48
66
61
61
44
14
21
21
23
35
24
22

Medium Clouds (% Sky Obscured)

42
41
30
33
37
39
93
28
19
29
31
27
17
4
0
0
0
0
0
0
0
0
0
2

High Clouds (% Sky Obscured)

79
100
100
100
100
97
97
83
90
13
0
0
0
0
2
10
2
2
71
2
25
30
35
35

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
1
2
2
6
4
4
7
15
9
5
0
0
0
0
0
0
0
0
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
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

27
26
24
22
21
20
20
19
18
18
18
18
19
20
21
22
24
25
26
26
26
25
24
22

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

39
48
53
66
71
72
72
71
72
73
71
64
59
57
58
56
51
44
37
34
31
30
29
38

Pressure (mb)

1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1017

Ozone (du)

309
310
310
311
312
313
313
314
316
321
324
325
324
319
317
318
319
319
319
318
317
317
317
318

Saturday 15

Waxing Crescent 18%

10:34

21:10

21 Bad
22 Bad
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
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

Sun - Rise: 05:48, Set: 20:21, Transit: 13:05. Moon - Rise: 10:34, Set: 21:10. Civil Dark: 20:59 - 05:10. Nautical Dark: 21:49 - 04:22. Astro Dark: 22:48 - 03:25

Total Clouds (% Sky Obscured)

53
52
23
44
66
63
73
80
83
78
79
59
100
48
89
86
97
79
79
70
98
90
93
96

Low Clouds (% Sky Obscured)

13
10
12
17
22
20
30
33
26
16
20
2
1
0
11
4
2
2
0
9
50
66
59
52

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
4
4
89
74
81
69
79
70
69
76
80
81

High Clouds (% Sky Obscured)

35
39
7
42
66
61
67
67
78
72
65
57
100
48
44
77
95
62
46
49
96
72
68
78

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
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
10
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)

12
12
9
9
9
9
8
7
6
5
6
6
6
6
5
5
6
6
7
7
8
8
9
8

Chance of Frost

Temperature (°C)

21
19
17
16
15
14
14
13
12
12
13
15
16
18
20
21
22
23
23
23
23
22
21
19

Feels Like (°C)

15
15
15
15
14
12
12
11
11
11
12
13
15
16
18
19
20
20
20
20
20
19
18
16

Dew Point (°C)

8
8
8
8
7
7
7
7
7
8
8
7
8
8
7
7
6
6
5
5
5
9
11
12

Relative Humidity (%)

43
48
55
58
58
61
64
68
71
75
70
61
56
50
44
40
36
32
30
30
31
43
52
62

Pressure (mb)

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

Ozone (du)

319
321
325
326
325
324
324
322
322
320
319
318
318
316
317
317
318
320
322
322
323
327
331
333

Sunday 16

Waxing Crescent 27%

11:52

21:21

21 Bad
22 Bad
23 Bad
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

Sun - Rise: 05:49, Set: 20:19, Transit: 13:04. Moon - Rise: 11:52, Set: 21:21. Civil Dark: 20:57 - 05:12. Nautical Dark: 21:47 - 04:24. Astro Dark: 22:44 - 03:28

Total Clouds (% Sky Obscured)

100
100
85
59
64
63
69
71
82
98
92
99
99
96
100
100
100
73
100
100
100
100
99
52

Low Clouds (% Sky Obscured)

45
40
22
3
22
32
55
50
55
75
64
79
83
56
84
85
77
37
70
79
72
64
63
29

Medium Clouds (% Sky Obscured)

81
68
27
25
21
13
9
9
9
14
19
24
29
28
27
26
30
31
31
32
32
33
32
30

High Clouds (% Sky Obscured)

70
64
60
50
40
29
17
12
7
53
8
12
15
59
50
100
100
57
100
97
94
80
41
41

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
1
1
4
12
19
27
22
17
9
9
10
4
13
16
16
15
14

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
11
10
11
11
11
11
11
12
12
11
10
10
10
9
10
11
11
10
10
10
10
11
11

Relative Humidity (%)

66
65
65
69
74
75
75
77
79
80
72
66
63
63
52
52
56
51
44
43
46
46
49
52

Pressure (mb)

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

Ozone (du)

335
334
334
337
338
338
337
335
334
331
329
325
324
322
322
321
319
317
314
312
310
308
305
303

Monday 17

Waxing Crescent 36%

13:09

21:35

21 Bad
22 Bad
23 Bad
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

Sun - Rise: 05:51, Set: 20:17, Transit: 13:04. Moon - Rise: 13:09, Set: 21:35. Civil Dark: 20:54 - 05:14. Nautical Dark: 21:44 - 04:27. Astro Dark: 22:41 - 03:31

Total Clouds (% Sky Obscured)

99
99
81
98
97
95
93
90
88
85
83
82
81
73
65
60
65
67
76
82
76
71
71
74

Low Clouds (% Sky Obscured)

66
69
27
78
83
86
74
69
88
85
82
81
77
73
65
60
65
67
76
82
76
71
71
74

Medium Clouds (% Sky Obscured)

28
21
16
74
78
84
14
90
87
85
83
77
72
73
57
10
18
26
33
26
20
14
11
9

High Clouds (% Sky Obscured)

40
41
66
91
85
73
62
58
28
45
4
0
0
4
8
10
7
3
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
4
9
9
7
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
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

10
9
5
0
0
0
0
6
39
63
93
32
34
26
30
21
21
20
20
19
19
19
19
17

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.9
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
11
11
12
12
12
11
10
11
14
15
16
16
16
17
18
19
19
20
20
19
18
18
18

Relative Humidity (%)

59
58
58
63
60
61
60
57
62
81
83
89
88
85
85
85
89
87
85
85
83
81
80
82

Pressure (mb)

1016
1016
1016
1016
1015
1015
1015
1014
1015
1015
1015
1015
1015
1015
1014
1014
1014
1014
1013
1013
1013
1013
1013
1014

Ozone (du)

302
300
299
299
296
295
295
294
292
291
290
293
294
292
294
297
297
296
295
295
296
298
299
299

Tuesday 18

Waxing Crescent 46%

14:25

21:51

21 Bad
22 Bad
23 Bad
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

Sun - Rise: 05:52, Set: 20:15, Transit: 13:04. Moon - Rise: 14:25, Set: 21:51. Civil Dark: 20:52 - 05:16. Nautical Dark: 21:42 - 04:29. Astro Dark: 22:37 - 03:34

Total Clouds (% Sky Obscured)

81
78
74
73
79
86
93
95
97
98
91
85
81
80
80
80
81
84
85
83
80
78
82
88

Low Clouds (% Sky Obscured)

81
78
74
73
79
86
93
95
94
93
65
41
20
27
34
41
35
29
23
23
20
8
5
5

Medium Clouds (% Sky Obscured)

5
13
19
20
27
27
35
33
33
34
36
25
19
18
18
13
12
10
7
8
6
7
17
28

High Clouds (% Sky Obscured)

0
1
1
1
4
9
13
27
32
37
17
8
3
3
2
2
6
8
10
5
4
9
12
15

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
14
14
11
17
19
19
15
11
3
9
9
4
4
3
1
1
1
0
1
2
1
2
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)

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

Chance of Frost

Temperature (°C)

20
19
19
18
18
17
17
17
17
17
17
18
19
20
21
23
24
24
25
26
25
25
24
23

Feels Like (°C)

20
19
19
19
18
17
17
17
17
18
18
16
17
17
17
18
18
24
23
23
23
24
25
21

Dew Point (°C)

17
17
17
17
16
16
15
15
14
14
14
13
12
11
10
9
8
7
6
4
4
5
5
6

Relative Humidity (%)

84
86
88
89
90
89
88
85
83
83
83
72
62
54
47
42
37
33
29
25
25
27
27
33

Pressure (mb)

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

Ozone (du)

299
298
298
298
297
297
298
298
300
302
304
305
306
306
306
307
307
307
307
307
307
308
308
307

Wednesday 19

Waxing Crescent 56%

15:38

22:11

21 Bad
22 Bad
23 Bad
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

Sun - Rise: 05:54, Set: 20:13, Transit: 13:04. Moon - Rise: 15:38, Set: 22:11. Civil Dark: 20:50 - 05:17. Nautical Dark: 21:39 - 04:31. Astro Dark: 22:34 - 03:36

Total Clouds (% Sky Obscured)

93
88
81
74
73
73
74
81
90
100
100
100
100
100
100
100
84
68
48
50
55
64

Low Clouds (% Sky Obscured)

5
8
8
13
43
55
60
68
77
81
67
59
47
53
62
72
61
49
40
46
55
57

Medium Clouds (% Sky Obscured)

41
41
50
54
55
55
56
62
67
73
71
70
69
71
73
76
61
47
31
31
29
30

High Clouds (% Sky Obscured)

23
31
37
37
28
18
8
31
54
77
88
95
100
100
100
100
84
67
48
49
44
40

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

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
4
5
3
47
71
89
69
40
53
65
61
43
58
74
92
91
91
93

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.6
1
0.4
0
0
0.2
0.2
0
0.2
0.4
0.8
0.7
0.6
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
10
9
9
8
8
8
8
8
8
8
8
8
7
7
6
5
3
2
1
1
2

Relative Humidity (%)

40
49
50
53
54
55
55
55
57
58
60
56
53
50
46
42
39
34
30
27
28
29

Pressure (mb)

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

Ozone (du)

307
307
307
308
308
309
310
310
311
311
312
312
313
313
316
320
324
324
324
324
323
322

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

Generated: 13/08/26 21:27:55. Forecast: 13/08/26 to 19/08/26. Timezone: UTC+1.00