Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

First Quarter 63%

15:27

23:29

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

Sun - Rise: 05:09, Set: 21:06, Transit: 13:07. Moon - Rise: 15:27, Set: 23:29. Civil Dark: 21:49 - 04:26. Nautical Dark: 22:51 - 03:25. Astro Dark: N/A - 01:23

Total Clouds (% Sky Obscured)

6
23
37
18
37
53
60
73
85
64
80
42
55
94
100
100
100
100
100
95
72
81
71
69

Low Clouds (% Sky Obscured)

6
23
30
18
34
40
53
42
41
42
40
30
33
32
73
63
69
73
62
33
45
56
38
36

Medium Clouds (% Sky Obscured)

6
23
24
18
6
26
35
45
25
17
18
0
0
2
31
35
67
90
91
29
29
29
31
33

High Clouds (% Sky Obscured)

2
23
22
0
2
8
5
19
50
18
55
22
33
89
100
100
100
100
100
81
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
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
5
5
4
4
4
3
2
2
3
3
5
4
5
6
7
6
7
10
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
55
64
74
83
86
87
90
90
89
86
77
66
58
53
48
48
47
48
45
39
40
42
39

Pressure (mb)

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

Ozone (du)

328
328
330
331
333
336
335
334
332
330
329
331
331
330
330
331
332
333
336
338
338
339
340
342

Wednesday 22

Waxing Gibbous 60%

16:41

23:46

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 05:11, Set: 21:04, Transit: 13:07. Moon - Rise: 16:41, Set: 23:46. Civil Dark: 21:48 - 04:28. Nautical Dark: 22:49 - 03:27. Astro Dark: 00:51 - 01:36

Total Clouds (% Sky Obscured)

89
57
63
100
100
100
100
96
95
80
79
82
92
95
100
83
96
97
87
99
90
92
97
89

Low Clouds (% Sky Obscured)

42
20
15
15
15
29
33
52
60
58
64
61
52
56
46
8
45
74
58
73
59
84
91
61

Medium Clouds (% Sky Obscured)

32
18
21
26
32
38
32
30
30
31
22
28
39
36
37
27
45
39
28
40
34
35
38
32

High Clouds (% Sky Obscured)

0
57
12
37
100
100
100
88
83
54
50
42
46
65
99
73
87
37
15
24
32
7
10
8

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
0
0
0
0
0
0
1
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
7
6
7
5
4
3
3
3
3
3
3
3
4
3
3
4
5
5
4
5
6
8
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
18
17
16
15
16
15
15
15
15
15
16
17
19
19
20
23
23
23
24
24
24
23
23

Dew Point (°C)

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

Relative Humidity (%)

42
48
53
61
66
71
75
77
79
78
72
67
64
61
59
52
46
43
44
46
44
42
44
50

Pressure (mb)

1024
1024
1024
1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021
1021
1021

Ozone (du)

342
339
338
336
336
336
333
332
330
328
327
325
324
323
323
322
321
320
318
318
317
316
315
315

Thursday 23

Waxing Gibbous 72%

17:51

00:09

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 05:12, Set: 21:03, Transit: 13:07. Moon - Rise: 17:51, Set: 00:09. Civil Dark: 21:46 - 04:29. Nautical Dark: 22:46 - 03:30. Astro Dark: 00:37 - 01:46

Total Clouds (% Sky Obscured)

74
70
69
83
69
56
66
69
74
82
96
99
86
91
71
50
79
90
96
95
91
88
87
87

Low Clouds (% Sky Obscured)

32
16
10
3
3
6
0
0
0
0
0
4
3
0
16
15
15
15
19
21
22
24
23
17

Medium Clouds (% Sky Obscured)

31
25
31
31
32
31
34
34
27
23
26
22
25
28
29
27
18
17
13
10
11
11
11
16

High Clouds (% Sky Obscured)

2
41
69
80
53
39
63
57
74
82
93
99
81
88
70
50
79
88
88
81
67
55
47
43

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

14
14
14
14
13
13
13
13
13
13
13
12
11
11
10
10
9
8
7
6
6
5
4
4

Relative Humidity (%)

52
60
68
70
70
71
74
77
79
81
81
71
62
54
47
41
36
31
29
26
25
23
22
22

Pressure (mb)

1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1019
1019
1019
1019
1019
1018
1017
1016
1015
1015
1014
1013
1013
1012

Ozone (du)

315
315
315
316
316
317
317
317
319
320
320
320
320
319
320
321
321
322
322
323
323
324
325
325

Friday 24

Waxing Gibbous 80%

18:53

00:41

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

Sun - Rise: 05:14, Set: 21:02, Transit: 13:07. Moon - Rise: 18:53, Set: 00:41. Civil Dark: 21:44 - 04:31. Nautical Dark: 22:44 - 03:32. Astro Dark: 00:28 - 01:53

Total Clouds (% Sky Obscured)

73
43
37
21
18
24
27
40
45
44
41
30
14
40
59
76
86
66
90
83
90
94
98
95

Low Clouds (% Sky Obscured)

9
0
4
9
13
9
5
0
0
0
0
0
0
0
8
15
23
25
37
57
58
56
53
14

Medium Clouds (% Sky Obscured)

21
26
25
20
18
13
6
0
8
18
31
24
13
0
13
66
62
38
34
34
35
42
46
54

High Clouds (% Sky Obscured)

30
11
9
6
8
24
27
40
45
44
37
27
13
35
51
64
60
43
42
10
31
41
58
70

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

Chance of Frost

Temperature (°C)

25
24
22
21
20
19
17
16
16
15
15
16
17
19
21
22
23
24
25
26
26
26
26
25

Feels Like (°C)

23
23
21
18
17
17
17
15
15
14
15
15
17
18
18
20
21
22
23
22
23
22
21
22

Dew Point (°C)

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

Relative Humidity (%)

26
32
39
41
45
53
59
63
68
72
74
67
58
44
35
33
32
28
25
25
26
25
26
36

Pressure (mb)

1012
1012
1012
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1011
1011
1010
1010
1009
1008
1008
1007
1007
1006
1006

Ozone (du)

325
326
327
328
331
332
333
334
335
337
337
335
331
333
336
332
331
331
333
332
330
329
328
328

Saturday 25

Waxing Gibbous 88%

19:43

01:24

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
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad

Sun - Rise: 05:15, Set: 21:00, Transit: 13:07. Moon - Rise: 19:43, Set: 01:24. Civil Dark: 21:43 - 04:33. Nautical Dark: 22:42 - 03:34. Astro Dark: 00:20 - 02:00

Total Clouds (% Sky Obscured)

61
69
65
59
93
93
94
92
78
59
89
96
94
93
85
77
69
66
64
66
69
69
70
52

Low Clouds (% Sky Obscured)

8
17
30
36
63
84
89
89
71
39
44
58
63
70
71
75
69
66
64
66
63
58
53
44

Medium Clouds (% Sky Obscured)

61
67
64
59
62
54
54
44
36
30
62
75
57
39
32
27
17
22
23
24
27
27
30
23

High Clouds (% Sky Obscured)

11
3
3
3
53
37
3
0
2
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
8
8
7
8
8
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
1
0
1
1
1
46
35
18
14
14
14
18
19
19
19
17
12
8

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

Chance of Frost

Temperature (°C)

24
22
21
19
18
17
18
17
17
17
17
17
17
18
19
20
22
23
23
23
24
23
23
22

Feels Like (°C)

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

Dew Point (°C)

11
12
13
14
14
13
12
12
12
14
14
13
11
11
11
12
13
13
13
13
13
12
11
11

Relative Humidity (%)

46
53
62
70
74
77
71
70
72
81
86
74
68
65
60
58
57
55
53
51
50
49
48
48

Pressure (mb)

1006
1007
1007
1007
1007
1007
1007
1007
1006
1007
1007
1007
1006
1006
1006
1006
1006
1007
1007
1007
1007
1008
1008
1009

Ozone (du)

325
323
324
323
323
323
323
324
327
329
328
328
328
328
327
328
329
330
330
330
330
330
330
330

Sunday 26

Waxing Gibbous 93%

No Rise

02:20

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

Sun - Rise: 05:16, Set: 20:59, Transit: 13:07. Moon - Rise: No Rise, Set: 02:20. Civil Dark: 21:41 - 04:34. Nautical Dark: 22:39 - 03:37. Astro Dark: 00:14 - 02:06

Total Clouds (% Sky Obscured)

34
15
18
21
22
21
19
16
13
11
9
13
18
22
19
18
17
20
25
33
54
76
96
89

Low Clouds (% Sky Obscured)

34
15
18
15
5
4
4
3
3
3
4
5
7
9
8
8
8
9
10
11
29
46
60
48

Medium Clouds (% Sky Obscured)

13
3
4
4
5
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
3
9
16
22

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
1
1
2
1
1
0
0
0
0
0
0
0
13
27
40
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 (%)

4
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
9
9
8
9
9
10
10
10
11
11
11
11
11
10
10
10
10
10

Chance of Frost

Temperature (°C)

20
19
17
17
16
15
14
14
13
13
14
14
16
17
19
21
23
24
25
26
27
27
26
26

Feels Like (°C)

20
20
20
18
18
17
13
13
13
13
13
12
14
14
14
15
15
16
24
24
23
24
25
25

Dew Point (°C)

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

Relative Humidity (%)

54
61
70
74
78
83
86
89
90
87
83
80
67
56
47
42
39
35
33
31
29
31
33
36

Pressure (mb)

1010
1011
1012
1012
1013
1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

330
329
329
328
328
327
327
327
326
326
326
325
325
325
325
325
325
325
324
322
321
321
322
322

Monday 27

Waxing Gibbous 97%

20:21

03:27

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK

Sun - Rise: 05:18, Set: 20:57, Transit: 13:07. Moon - Rise: 20:21, Set: 03:27. Civil Dark: 21:39 - 04:36. Nautical Dark: 22:37 - 03:39. Astro Dark: 00:08 - 02:12

Total Clouds (% Sky Obscured)

83
73
66
57
50
52
47
48
47
41
38
30
26
26
25
29
33

Low Clouds (% Sky Obscured)

36
25
16
8
0
0
1
2
5
9
12
15
26
26
25
29
33

Medium Clouds (% Sky Obscured)

26
29
29
28
27
27
24
23
23
22
22
20
22
20
20
24
28

High Clouds (% Sky Obscured)

15
0
0
0
0
0
0
0
0
0
0
0
0
1
6
13
24

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

23
23
23
22
22
21
18
19
20
19
18
17
20
20
20
21
21

Dew Point (°C)

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

Relative Humidity (%)

41
48
57
62
65
70
70
72
73
70
66
63
55
49
43
39
35

Pressure (mb)

1017
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018

Ozone (du)

321
320
319
319
318
317
317
316
316
316
316
316
316
315
314
315
316

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

Generated: 21/07/26 20:57:16. Forecast: 21/07/26 to 27/07/26. Timezone: UTC+1.00