Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 3

Waning Gibbous 71%

22:11

11:03

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

26
50
44
66
62
61
63
23
25
14
86
57
6
22
17
25
35
38
27
41
100
99
100
100

Low Clouds (% Sky Obscured)

0
0
0
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)

0
0
12
22
20
15
6
6
13
6
2
10
1
1
2
17
22
22
19
23
6
2
2
0

High Clouds (% Sky Obscured)

26
50
44
65
52
57
57
12
8
4
83
47
4
22
17
2
2
6
3
8
100
99
100
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
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
8
9
8
8
8
6
7
10
10
10
9
8
7
6
6
5
4
5
5
6
7
9

Chance of Frost

Temperature (°C)

22
25
27
29
30
30
31
31
31
30
29
27
24
22
21
20
19
18
18
18
17
17
18
20

Feels Like (°C)

20
23
25
26
28
29
30
31
31
29
27
25
23
21
20
19
19
19
18
17
17
15
16
17

Dew Point (°C)

11
11
11
9
8
7
8
9
9
8
8
9
10
10
11
12
12
11
10
8
9
8
7
6

Relative Humidity (%)

50
42
37
29
25
24
24
24
25
26
28
33
41
47
54
59
63
64
57
54
57
55
48
40

Pressure (mb)

1013
1012
1012
1011
1011
1010
1010
1009
1009
1008
1008
1008
1009
1009
1010
1010
1009
1009
1009
1009
1008
1009
1009
1009

Ozone (du)

325
327
327
327
327
325
326
326
326
326
325
325
327
328
327
327
323
323
321
319
317
315
315
313

Tuesday 4

Waning Gibbous 60%

22:24

12:24

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

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)

99
97
100
97
92
98
99
90
73
63
25
46
24
40
39
49
58
50
49
74
77
73
69
86

Low Clouds (% Sky Obscured)

0
36
50
30
55
71
81
52
21
24
16
15
15
22
25
32
33
37
36
70
77
73
54
86

Medium Clouds (% Sky Obscured)

31
39
50
95
70
83
42
87
71
50
2
29
2
8
3
6
16
0
0
3
0
0
22
16

High Clouds (% Sky Obscured)

99
38
84
40
28
88
92
36
4
0
0
0
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
0
0
4
11
1
1
0
0
0
0
0
0
0
0
1
0
1
1
0
1
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)

11
11
13
13
14
16
16
17
18
18
15
14
13
12
12
12
11
11
11
11
12
12
12
14

Chance of Frost

Temperature (°C)

21
23
25
26
26
27
27
27
27
26
25
24
22
21
19
18
18
17
17
17
17
17
17
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

37
38
37
36
39
42
38
36
36
39
45
50
53
61
72
80
81
81
85
90
89
79
73
77

Pressure (mb)

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

Ozone (du)

312
311
312
313
315
315
316
315
315
317
318
318
318
317
318
317
316
316
318
317
317
317
318
318

Wednesday 5

Waning Gibbous 49%

22:42

13:48

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

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)

65
85
66
33
29
30
34
36
29
40
13
17
21
15
1
0
0
0
0
0
0
0
10
20

Low Clouds (% Sky Obscured)

65
85
66
31
23
23
28
31
22
28
7
15
17
13
0
0
0
0
0
0
0
0
7
14

Medium Clouds (% Sky Obscured)

0
32
0
0
0
0
0
0
0
11
5
6
4
0
0
0
0
0
0
0
0
0
1
1

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
1
0
0
0
1
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 (%)

1
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)

15
15
16
16
16
17
17
16
19
18
16
15
14
13
13
11
10
8
8
8
9
9
11
12

Chance of Frost

Temperature (°C)

18
20
20
22
23
23
24
24
24
22
21
20
18
16
15
15
14
13
12
12
12
12
13
15

Feels Like (°C)

14
15
15
17
18
19
19
20
18
17
17
15
15
13
12
12
12
12
12
11
10
10
11
12

Dew Point (°C)

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

Relative Humidity (%)

70
62
58
46
40
36
34
27
29
31
34
39
45
50
59
64
70
77
81
84
80
80
74
64

Pressure (mb)

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

Ozone (du)

319
318
320
324
327
329
329
330
330
331
332
333
333
333
334
332
332
336
339
346
351
354
355
358

Thursday 6

Third Quarter 37%

23:07

15:15

09 OK
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 OK
01 OK
02 OK
03 Good
04 OK
05 Bad
06 OK
07 OK
08 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)

37
61
81
93
96
96
95
96
85
100
91
82
73
72
63
41
23
19
13
28
86
48
38
30

Low Clouds (% Sky Obscured)

34
57
72
81
78
73
65
51
23
35
46
54
68
65
33
21
17
12
8
5
3
0
5
10

Medium Clouds (% Sky Obscured)

1
10
16
23
18
13
9
8
7
9
10
11
11
7
4
0
0
0
0
0
0
0
2
5

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
18
33
70
42
23
9
30
24
24
7
7
4
18
83
44
30
19

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
11
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
16
15
16
16
17
17
17
17
17
16
16
15
14
13
13
13
12
12
11
9
12
15

Dew Point (°C)

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

Relative Humidity (%)

60
52
47
45
43
40
39
38
39
36
40
43
46
48
50
57
62
66
70
73
75
75
66
56

Pressure (mb)

1020
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

359
360
354
351
349
351
343
338
337
335
334
331
328
328
328
327
327
327
328
329
332
335
337
339

Friday 7

Waning Crescent 26%

23:44

16:42

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

14
26
40
60
95
51
63
92
90
86
73
60
47
48
41
43
55
70
73
44
44
44
42
43

Low Clouds (% Sky Obscured)

14
11
6
3
2
1
0
0
3
2
2
2
2
7
14
19
10
4
0
0
0
0
0
2

Medium Clouds (% Sky Obscured)

7
13
19
25
26
22
22
92
28
86
73
40
47
20
7
2
5
7
8
4
3
5
6
3

High Clouds (% Sky Obscured)

2
3
6
21
56
6
17
51
46
45
46
46
42
36
10
14
25
37
36
31
29
30
21
13

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

49
44
40
35
31
27
25
24
23
23
23
28
33
38
45
48
49
51
54
58
56
53
51
46

Pressure (mb)

1024
1024
1023
1023
1022
1021
1021
1020
1020
1019
1019
1019
1019
1020
1020
1019
1019
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

339
333
332
331
330
331
334
333
332
334
338
340
345
344
343
340
339
337
335
334
333
332
332
331

Saturday 8

Waning Crescent 24%

00:39

17:59

09 OK
10 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
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 Bad
07 Bad
08 Bad

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)

39
46
53
55
56
52
48
42
40
44
56
62
72
69
66
63
65
76
82
80
83
86
86
82

Low Clouds (% Sky Obscured)

3
3
2
2
1
1
1
1
3
4
9
13
18
15
10
3
8
12
16
15
13
7
7
8

Medium Clouds (% Sky Obscured)

0
8
19
25
23
12
11
17
24
33
43
38
39
38
37
29
25
21
16
16
10
10
10
10

High Clouds (% Sky Obscured)

4
23
48
55
56
52
48
41
21
0
0
0
0
0
1
1
32
62
82
80
83
86
86
82

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
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
5
11
19
25
23
4
9
10
2
17
26
30
47
71

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
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
21
22
23
24
25
25
26
25
25
24
22
21
19
18
17
16
15
15
15
15
15
15
16

Feels Like (°C)

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

Dew Point (°C)

5
6
4
3
2
1
-1
-2
-1
-0
1
2
5
7
9
10
12
12
12
12
12
12
12
10

Relative Humidity (%)

41
37
31
27
23
20
18
16
18
19
21
27
35
44
54
64
78
80
83
86
83
82
80
68

Pressure (mb)

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

Ozone (du)

330
330
328
326
324
323
322
321
320
319
318
318
317
316
315
314
314
314
314
313
314
315
315
315

Sunday 9

Waning Crescent 16%

01:53

19:00

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 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 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)

77
77
67
67
62
62
61
47
48
49
45
42
38
38
37
37
32
30
27
26
27
32

Low Clouds (% Sky Obscured)

9
13
12
19
61
62
61
47
48
38
32
28
22
15
9
5
8
11
16
23
27
32

Medium Clouds (% Sky Obscured)

15
15
35
44
44
40
40
40
44
44
34
36
30
29
26
26
17
9
0
0
0
0

High Clouds (% Sky Obscured)

77
77
67
67
62
57
37
37
38
38
38
24
8
7
6
4
7
10
12
7
3
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

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

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

Precipitation Probability (%)

90
95
95
95
95
89
68
59
44
10
18
13
5
3
1
0
0
0
0
0
3
0

Precipitation Amount (mm)

1
0.8
1.1
1.3
1
0.7
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
7
6
4
3
2
1
1
1
1
-0
3
7
10
10
9
9
9
9
9
9
9

Relative Humidity (%)

58
49
43
38
34
31
28
26
26
26
25
35
49
66
68
70
72
76
79
83
80
79

Pressure (mb)

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

Ozone (du)

315
314
314
313
312
312
311
311
311
311
312
312
313
313
314
314
315
318
322
326
327
328

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

Generated: 03/08/26 08:55:32. Forecast: 03/08/26 to 09/08/26. Timezone: UTC+1.00