Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 6

Third Quarter 37%

23:07

15:15

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

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)

42
42
34
37
30
30
52
69
55
49
57
44
95
24
55
28
32
48
28
34
37
56
54
26

Low Clouds (% Sky Obscured)

5
3
2
3
3
3
9
12
11
13
12
4
9
13
14
14
17
18
23
27
28
2
18
18

Medium Clouds (% Sky Obscured)

39
34
34
23
18
18
26
24
15
0
2
0
2
0
0
0
0
0
0
0
0
4
0
0

High Clouds (% Sky Obscured)

0
0
0
2
2
2
3
30
35
35
35
38
88
5
50
12
16
33
1
4
0
46
37
2

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)

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

Chance of Frost

Temperature (°C)

21
21
22
22
22
21
20
18
16
15
14
14
13
12
12
11
11
12
15
17
19
20
22
23

Feels Like (°C)

18
19
18
19
19
19
17
15
13
12
11
11
10
10
11
11
10
12
15
17
19
21
21
20

Dew Point (°C)

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

Relative Humidity (%)

29
26
24
24
24
26
31
39
44
49
51
55
59
62
65
68
68
62
52
43
38
34
31
29

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1022

Ozone (du)

349
343
339
337
338
334
331
329
328
328
328
327
327
327
326
327
328
329
329
329
329
330
332
335

Friday 7

Waning Crescent 26%

23:44

16:42

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

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)

61
45
75
43
46
10
3
2
9
11
2
0
2
15
15
3
0
2
3
6
26
19
18
34

Low Clouds (% Sky Obscured)

24
22
21
24
22
5
0
0
0
6
0
0
0
0
0
0
0
0
0
0
0
0
0
17

Medium Clouds (% Sky Obscured)

0
0
4
9
11
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
12

High Clouds (% Sky Obscured)

35
17
55
2
13
2
3
2
8
1
1
0
1
14
14
2
0
2
3
3
25
19
15
6

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)

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

Chance of Frost

Temperature (°C)

24
24
24
24
24
23
22
20
18
17
16
15
14
13
13
12
12
13
16
19
21
23
25
26

Feels Like (°C)

23
21
22
23
23
22
21
19
17
16
15
15
14
13
12
12
12
14
16
20
21
21
23
24

Dew Point (°C)

3
2
2
1
1
0
2
2
2
3
2
3
3
4
4
4
4
4
4
4
5
4
3
2

Relative Humidity (%)

26
24
22
21
21
21
26
30
34
38
38
43
49
53
56
58
57
52
44
38
33
28
25
21

Pressure (mb)

1022
1021
1021
1020
1020
1020
1020
1021
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1018

Ozone (du)

334
334
331
329
327
325
325
326
327
328
330
332
333
329
327
327
327
324
324
324
324
324
324
324

Saturday 8

Waning Crescent 16%

00:39

17:59

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 Bad
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK
13 OK

Sun - Rise: 05:36, Set: 20:37, Transit: 13:06. Moon - Rise: 00:39, Set: 17:59. Civil Dark: 21:16 - 04:58. Nautical Dark: 22:08 - 04:07. Astro Dark: 23:13 - 03:02

Total Clouds (% Sky Obscured)

78
79
79
92
76
75
75
76
66
57
53
60
68
73
64
49
37
37
39
35
36
32
26
44

Low Clouds (% Sky Obscured)

19
22
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

28
25
22
25
35
35
32
38
31
29
7
10
12
14
16
16
18
15
12
5
4
3
2
8

High Clouds (% Sky Obscured)

18
27
42
83
62
60
60
36
49
13
42
50
58
68
44
23
3
6
9
9
12
12
10
28

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

Chance of Frost

Temperature (°C)

27
27
28
28
27
26
24
22
21
19
18
17
17
16
16
16
16
17
19
22
24
26
27
29

Feels Like (°C)

24
25
24
25
25
25
23
20
19
18
16
16
16
16
15
15
15
16
19
21
24
26
27
28

Dew Point (°C)

1
1
0
0
-1
-2
1
3
4
4
3
1
-1
-2
-3
-2
-1
-2
-1
-0
1
1
0
1

Relative Humidity (%)

19
17
16
16
16
16
22
29
32
35
37
34
29
28
28
29
30
28
25
23
21
19
16
16

Pressure (mb)

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

Ozone (du)

325
326
328
329
328
327
326
326
326
325
323
322
321
321
320
319
318
318
317
317
316
315
313
312

Sunday 9

Waning Crescent 8%

01:53

19:00

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

Sun - Rise: 05:38, Set: 20:35, Transit: 13:06. Moon - Rise: 01:53, Set: 19:00. Civil Dark: 21:14 - 04:59. Nautical Dark: 22:05 - 04:09. Astro Dark: 23:10 - 03:05

Total Clouds (% Sky Obscured)

62
80
64
55
57
75
55
55
54
49
43
42
35
61
89
93
49
47
42
38
35
31
25
32

Low Clouds (% Sky Obscured)

0
0
0
0
2
5
6
8
6
5
3
8
13
18
22
22
24
22
23
21
18
15
15
20

Medium Clouds (% Sky Obscured)

10
16
14
14
15
45
18
20
17
14
12
18
17
54
89
93
29
20
11
4
4
4
0
0

High Clouds (% Sky Obscured)

47
64
64
55
42
38
39
40
44
47
36
24
12
0
0
0
3
3
2
5
3
2
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
1
3
0
4
6
0
0
0
0
0
0
0
0
0
1
4
3
3
3
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
9
9
8
7
7
7
6
6
4
4
4
2
3
6
6
5
6
8
8
10
9
9
9

Chance of Frost

Temperature (°C)

29
30
30
30
28
27
25
23
22
21
20
19
19
18
18
18
17
18
19
22
24
26
27
29

Feels Like (°C)

28
28
29
28
28
27
24
23
22
21
20
19
19
19
16
15
15
17
18
21
23
25
26
28

Dew Point (°C)

1
1
1
0
-1
-2
0
0
1
1
1
1
2
1
1
1
2
2
2
2
1
-0
-1
-1

Relative Humidity (%)

16
15
15
14
14
15
19
21
24
26
28
29
32
32
32
32
34
34
31
27
22
18
15
13

Pressure (mb)

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

Ozone (du)

312
311
309
309
309
309
308
308
309
308
308
308
309
308
309
309
310
310
309
309
309
308
308
308

Monday 10

Waning Crescent 2%

03:22

19:42

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 OK
06 OK
07 Good
08 Good
09 Good
10 Good
11 OK
12 OK
13 OK

Sun - Rise: 05:40, Set: 20:33, Transit: 13:05. Moon - Rise: 03:22, Set: 19:42. Civil Dark: 21:12 - 05:01. Nautical Dark: 22:02 - 04:11. Astro Dark: 23:06 - 03:09

Total Clouds (% Sky Obscured)

41
48
46
50
58
90
81
67
65
58
65
80
85
89
66
43
20
14
9
4
16
27
39
37

Low Clouds (% Sky Obscured)

24
30
29
30
26
4
3
2
2
3
4
5
3
2
1
1
1
1
0
0
0
0
2
2

Medium Clouds (% Sky Obscured)

0
3
3
33
58
51
36
21
14
7
0
1
2
3
8
14
19
14
9
4
13
21
26
19

High Clouds (% Sky Obscured)

0
0
0
0
0
40
40
55
55
58
65
74
84
83
64
40
17
11
6
0
3
5
7
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

29
28
29
27
25
25
25
25
25
24
23
22
19
19
18
18
18
17
19
20
21
21
22
22

Dew Point (°C)

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

Relative Humidity (%)

12
13
13
13
17
20
24
30
37
41
45
48
49
51
51
48
46
44
36
31
27
24
23
21

Pressure (mb)

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

Ozone (du)

308
307
308
307
307
307
307
307
307
307
307
307
307
307
308
308
308
308
308
308
309
309
309
308

Tuesday 11

Waning Crescent 0%

04:55

20:10

14 OK
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 Bad
04 Bad
05 Bad
06 Bad
07 OK
08 OK
09 OK
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 05:41, Set: 20:31, Transit: 13:05. Moon - Rise: 04:55, Set: 20:10. Civil Dark: 21:10 - 05:03. Nautical Dark: 22:00 - 04:13. Astro Dark: 23:02 - 03:12

Total Clouds (% Sky Obscured)

36
49
69
79
87
72
60
45
52
60
67
67
64
64
59
55
55
43
35
32
54
57
60
73

Low Clouds (% Sky Obscured)

2
0
11
19
24
25
19
22
12
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

12
4
17
29
39
45
50
45
46
40
36
33
24
25
23
18
17
11
7
0
1
3
4
19

High Clouds (% Sky Obscured)

32
38
42
46
45
35
27
16
20
25
29
23
15
7
5
3
1
3
6
18
19
19
25
53

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

31
30
30
31
32
32
27
26
25
24
24
24
20
21
22
22
22
22
22
23
23
24
24
25

Dew Point (°C)

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

Relative Humidity (%)

20
18
18
20
22
24
27
31
36
37
41
43
45
48
51
51
51
52
48
46
42
38
34
31

Pressure (mb)

1016
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

308
307
306
306
306
306
306
307
307
307
307
307
307
308
309
309
309
309
309
309
310
310
310
310

Wednesday 12

New Moon 1%

06:26

20:30

14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 05:43, Set: 20:29, Transit: 13:05. Moon - Rise: 06:26, Set: 20:30. Civil Dark: 21:08 - 05:05. Nautical Dark: 21:57 - 04:16. Astro Dark: 22:59 - 03:15

Total Clouds (% Sky Obscured)

85
100
91
82
72
82
91
100
89
77
66

Low Clouds (% Sky Obscured)

0
0
1
2
4
9
16
22
29
36
39

Medium Clouds (% Sky Obscured)

33
48
41
32
20
21
25
25
19
13
7

High Clouds (% Sky Obscured)

78
100
73
47
27
54
79
100
69
37
6

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
1
4
9
22
22
19
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

9
9
9
9
9
9
9
9
9
7
6

Chance of Frost

Temperature (°C)

31
31
31
30
28
27
26
24
22
21
21

Feels Like (°C)

30
30
29
28
26
25
25
25
24
24
24

Dew Point (°C)

11
10
10
7
4
1
3
5
7
9
11

Relative Humidity (%)

29
27
26
23
20
18
23
28
36
43
53

Pressure (mb)

1016
1016
1016
1016
1016
1017
1017
1018
1018
1018
1019

Ozone (du)

309
309
308
307
306
305
305
304
304
303
303

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

Generated: 06/08/26 14:29:32. Forecast: 06/08/26 to 12/08/26. Timezone: UTC+1.00