Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 24

Waxing Gibbous 64%

13:37

02:28

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

Sun - Rise: 04:53, Set: 21:00, Transit: 12:57. Moon - Rise: 13:37, Set: 02:28. Civil Dark: 21:44 - 04:09. Nautical Dark: 22:48 - 03:04. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

21
29
4
7
10
15
12
10
8
4
0
0
0
0
0
0
0
0
0
0
0
6
0
0

Low Clouds (% Sky Obscured)

21
0
0
0
0
0
2
10
8
4
0
0
0
0
0
0
0
0
0
0
0
6
0
0

Medium 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

High Clouds (% Sky Obscured)

3
15
4
7
10
15
10
8
8
3
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
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)

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

Chance of Frost

Temperature (°C)

14
15
18
20
22
24
26
27
28
28
29
29
29
28
25
22
20
19
18
17
16
16
15
15

Feels Like (°C)

15
18
20
22
23
26
28
30
31
31
31
31
31
32
28
25
22
21
20
19
18
17
17
17

Dew Point (°C)

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

Relative Humidity (%)

92
86
82
77
73
68
62
55
51
48
48
50
54
67
79
85
82
81
81
81
78
79
78
79

Pressure (mb)

1030
1031
1031
1031
1031
1031
1031
1031
1030
1030
1030
1030
1029
1029
1030
1030
1031
1031
1031
1031
1031
1031
1031
1031

Ozone (du)

320
321
321
321
321
322
322
323
322
321
321
321
321
320
319
319
319
320
321
321
319
318
316
315

Monday 25

Waxing Gibbous 74%

14:53

02:38

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

Sun - Rise: 04:52, Set: 21:01, Transit: 12:57. Moon - Rise: 14:53, Set: 02:38. Civil Dark: 21:46 - 04:07. Nautical Dark: 22:50 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
6
0
0
0
0
0
0
0
0
0

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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
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
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
3
4
5
6
6
7
7
8
8
9
10
10
10
9
7
6
5
5
5
4
4
3
3

Chance of Frost

Temperature (°C)

15
17
20
22
25
27
29
30
31
32
32
31
30
29
26
23
21
19
18
17
17
17
16
16

Feels Like (°C)

17
19
22
24
27
29
30
32
32
33
33
32
32
30
28
25
23
21
20
19
18
19
18
18

Dew Point (°C)

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

Relative Humidity (%)

79
73
69
65
60
56
51
48
45
45
47
52
59
62
69
72
71
71
72
74
74
75
77
77

Pressure (mb)

1031
1031
1031
1032
1032
1031
1031
1030
1030
1030
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1029
1029
1029
1029

Ozone (du)

313
313
313
313
314
315
315
315
313
314
314
315
316
317
317
316
317
317
318
319
319
319
319
319

Tuesday 26

Waxing Gibbous 82%

16:07

02:49

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

Sun - Rise: 04:51, Set: 21:03, Transit: 12:57. Moon - Rise: 16:07, Set: 02:49. Civil Dark: 21:47 - 04:06. Nautical Dark: 22:53 - 03:00. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
21
38
37
30
9
21
25
33
44
40
33
32
27
21
33
49

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
14
26

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
9
16
12
12
4
9
10
13
16
17
14
14
12
12
13
14

High 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
8
17

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
1
2
2
0
5
4
1
1
1
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)

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

Chance of Frost

Temperature (°C)

17
18
21
23
26
28
29
31
32
32
32
31
29
26
24
22
20
19
18
17
16
15
14
13

Feels Like (°C)

18
20
23
26
28
30
32
33
33
33
32
32
30
28
26
23
21
20
19
16
16
15
14
13

Dew Point (°C)

12
13
15
15
15
15
15
15
16
17
18
20
20
18
18
15
11
10
9
11
11
10
11
12

Relative Humidity (%)

75
72
67
60
53
46
41
37
37
40
44
49
57
61
67
64
57
54
56
67
74
75
80
90

Pressure (mb)

1029
1029
1029
1029
1028
1028
1028
1027
1026
1026
1026
1025
1025
1026
1026
1026
1027
1027
1027
1027
1027
1027
1028
1028

Ozone (du)

319
319
320
322
324
324
323
324
323
323
324
325
325
326
326
328
329
328
328
328
327
327
329
329

Wednesday 27

Waxing Gibbous 89%

17:21

03:02

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

Sun - Rise: 04:50, Set: 21:04, Transit: 12:58. Moon - Rise: 17:21, Set: 03:02. Civil Dark: 21:49 - 04:05. Nautical Dark: 22:55 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

67
65
56
31
24
23
19
14
10
5
11
17
24
17
9
0
16
31
47
48
46
47
48
42

Low Clouds (% Sky Obscured)

51
49
34
6
0
0
0
0
0
0
7
13
19
13
6
0
0
0
0
4
8
12
21
28

Medium Clouds (% Sky Obscured)

14
20
24
27
24
23
19
14
10
4
6
8
10
8
6
0
10
19
25
23
20
15
16
16

High Clouds (% Sky Obscured)

25
18
9
0
2
4
5
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
2
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
11
11
12
13
13
13
14
14
14
14
13
13
12
11
10
9
9
8
8
8
8
8
8

Chance of Frost

Temperature (°C)

13
14
15
17
19
20
21
22
22
22
22
21
20
18
17
15
13
12
11
11
10
10
10
10

Feels Like (°C)

14
13
14
15
18
19
20
21
21
20
20
19
18
17
15
13
12
11
10
9
9
9
9
9

Dew Point (°C)

13
13
14
14
14
14
14
14
14
13
13
12
11
11
9
8
6
5
4
4
4
5
6
7

Relative Humidity (%)

95
92
89
79
72
67
63
61
59
57
56
56
56
60
62
62
62
61
58
61
66
72
76
80

Pressure (mb)

1028
1028
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027

Ozone (du)

328
328
328
329
329
329
330
332
333
334
333
332
332
332
333
333
332
333
333
334
334
335
334
334

Thursday 28

Waxing Gibbous 95%

18:35

03:18

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

Sun - Rise: 04:49, Set: 21:05, Transit: 12:58. Moon - Rise: 18:35, Set: 03:18. Civil Dark: 21:50 - 04:04. Nautical Dark: 22:57 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

49
63
73
75
60
51
33
30
28
31
49
71
93
87
76
78
64
33
0
32
64
96
96
95

Low Clouds (% Sky Obscured)

39
29
15
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
17
33
50
46
38

Medium Clouds (% Sky Obscured)

23
31
34
28
24
22
17
11
6
0
0
2
2
3
3
3
2
1
0
0
0
0
7
19

High Clouds (% Sky Obscured)

1
23
45
66
47
28
5
11
20
31
49
71
93
87
76
77
56
32
0
30
55
80
75
63

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
5
6
23
32
34
31
19
3
3
1
0
11
5
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
10
10
11
12
12
12
12
11
11
10
10
10
9
8
6
4
3
3
3
4
4
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
11
13
15
17
17
18
19
20
20
20
19
19
18
17
16
16
15
14
14
12
11
12
10

Dew Point (°C)

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

Relative Humidity (%)

81
75
66
59
50
44
40
39
38
38
38
40
45
51
53
56
58
57
57
57
58
60
61
60

Pressure (mb)

1027
1027
1027
1026
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1023
1023
1024
1024
1023
1023
1023
1023
1023
1023

Ozone (du)

335
335
336
336
335
335
335
335
334
334
333
334
333
332
332
332
331
332
333
333
334
335
335
335

Friday 29

Waxing Gibbous 98%

19:49

03:38

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 OK
22 OK
23 OK
00 Good
01 Good
02 Good
03 Good
04 OK
05 OK

Sun - Rise: 04:48, Set: 21:06, Transit: 12:58. Moon - Rise: 19:49, Set: 03:38. Civil Dark: 21:52 - 04:03. Nautical Dark: 22:59 - 02:55. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

90
91
88
90
84
84
83
89
85
86
91
86
91
83
65
48
34
21
10
8
7
6
19
32

Low Clouds (% Sky Obscured)

29
40
54
65
59
52
46
42
35
30
40
47
53
47
40
34
20
10
0
1
3
4
3
1

Medium Clouds (% Sky Obscured)

22
20
13
14
8
8
9
15
12
0
0
0
0
0
0
0
0
0
0
0
0
0
4
6

High Clouds (% Sky Obscured)

51
46
48
59
48
30
9
34
57
81
76
67
63
46
22
11
11
9
8
6
5
5
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
9
14
15
15
16
17
18
24
25
24
24
24
25
21
20
19
19
17
16
12
11
11
11

Dew Point (°C)

6
6
7
7
7
8
9
10
10
11
11
12
12
13
10
9
6
4
2
-1
-2
-2
-3
-1

Relative Humidity (%)

60
60
55
50
44
43
43
42
43
44
44
48
52
57
55
55
54
49
43
39
37
37
35
40

Pressure (mb)

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

Ozone (du)

335
335
336
336
336
335
335
334
335
336
337
338
339
340
340
339
339
339
339
339
338
338
337
337

Saturday 30

Waxing Gibbous 100%

21:01

04:06

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

Sun - Rise: 04:47, Set: 21:08, Transit: 12:58. Moon - Rise: 21:01, Set: 04:06. Civil Dark: 21:53 - 04:02. Nautical Dark: 23:01 - 02:53. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

44
51
68
80
82
84
86
86
77
53
34
30
30
30
39
53
55
61
70

Low Clouds (% Sky Obscured)

0
0
0
0
9
17
27
21
14
7
4
1
0
1
1
1
1
1
1

Medium Clouds (% Sky Obscured)

6
6
6
7
9
7
10
24
36
45
34
30
30
30
39
53
55
57
55

High Clouds (% Sky Obscured)

7
20
42
61
69
78
86
81
77
53
34
30
30
30
39
53
55
61
55

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
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
15
16
17
18
18
19
25
24
24
24
24
24
19
20
20
19
18

Dew Point (°C)

2
4
5
7
8
9
9
10
10
9
9
10
11
12
11
11
10
10
9

Relative Humidity (%)

44
48
47
46
44
42
40
39
38
36
36
41
47
54
57
60
64
65
65

Pressure (mb)

1021
1021
1021
1020
1020
1019
1018
1018
1017
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014

Ozone (du)

337
337
337
336
335
336
337
337
338
339
340
339
339
338
338
338
338
339
339

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

Generated: 24/05/26 06:33:10. Forecast: 24/05/26 to 30/05/26. Timezone: UTC+1.00