Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 43%

14:11

23:15

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

Sun - Rise: 05:08, Set: 21:07, Transit: 13:07. Moon - Rise: 14:11, Set: 23:15. Civil Dark: 21:51 - 04:24. Nautical Dark: 22:53 - 03:23. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

1
9
20
42
35
42
52
20
16
32
31
3
26
51
55
57
41
47
40
52
50
45
52
54

Low Clouds (% Sky Obscured)

1
9
20
22
14
21
17
0
0
9
26
3
24
48
52
57
41
43
36
46
42
34
37
39

Medium Clouds (% Sky Obscured)

1
9
20
36
29
37
41
20
15
25
20
0
0
2
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
3
0
0
0
0
0
0
0
0
0
3
3
6
3
6
5
5
3
2
3
2
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)

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

Chance of Frost

Temperature (°C)

24
24
24
24
23
22
20
18
17
15
15
14
13
13
13
13
14
15
17
19
20
21
21
23

Feels Like (°C)

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

Dew Point (°C)

3
3
4
4
6
8
11
13
13
13
12
12
12
12
12
13
12
11
10
9
8
7
6
6

Relative Humidity (%)

25
25
26
28
32
41
54
71
79
85
86
90
92
93
95
95
84
73
62
53
47
40
36
33

Pressure (mb)

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

Ozone (du)

341
338
336
336
336
338
339
339
340
339
338
337
336
335
334
334
334
333
332
331
330
328
326
326

Tuesday 21

First Quarter 53%

No Rise

23:29

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

Sun - Rise: 05:09, Set: 21:06, Transit: 13:07. Moon - Rise: No Rise, 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)

62
62
38
29
41
37
46
56
47
36
59
97
65
64
70
88
79
91
100
100
100
98
96
72

Low Clouds (% Sky Obscured)

53
46
32
18
23
15
20
25
20
23
24
34
33
43
38
30
28
38
38
37
60
52
47
39

Medium Clouds (% Sky Obscured)

0
15
17
13
18
17
23
30
33
23
32
51
40
46
44
39
41
39
35
78
92
87
76
49

High Clouds (% Sky Obscured)

1
0
2
3
3
3
3
0
0
0
18
88
29
9
21
47
26
87
100
100
100
86
53
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
1
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)

10
10
11
11
10
8
7
6
6
5
3
3
4
3
3
3
2
2
2
2
2
3
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

31
30
30
32
35
41
51
63
76
81
83
85
86
87
87
85
75
66
58
51
47
44
40
37

Pressure (mb)

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

Ozone (du)

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

Wednesday 22

Waxing Gibbous 63%

15:27

23:46

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 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 05:11, Set: 21:04, Transit: 13:07. Moon - Rise: 15:27, 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)

62
79
56
52
57
92
78
79
92
70
100
100
94
97
100
62
80
84
83
78
92
96
97
97

Low Clouds (% Sky Obscured)

50
65
35
27
18
54
55
54
39
32
26
24
16
7
3
3
3
16
21
34
70
75
72
64

Medium Clouds (% Sky Obscured)

26
25
28
33
26
31
22
26
14
24
24
23
21
21
18
8
5
16
21
21
40
42
47
45

High Clouds (% Sky Obscured)

1
0
0
0
0
6
20
34
88
70
100
100
82
92
100
60
76
72
66
72
51
30
23
32

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
1
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
10
11
10
9
9
8
9
8
6
4
3
2
3
3
2
1
2
3
4
4
4
4
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

33
34
41
41
43
45
51
61
70
79
83
85
85
85
84
79
71
62
56
49
44
41
40
38

Pressure (mb)

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

Ozone (du)

334
333
335
337
338
336
334
334
334
333
331
329
328
327
326
324
323
321
321
320
319
318
317
316

Thursday 23

Waxing Gibbous 72%

16:41

00:09

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 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 05:12, Set: 21:03, Transit: 13:07. Moon - Rise: 16:41, 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)

97
94
74
86
60
88
74
85
89
99
100
100
100
100
100
100
85
100
75
62
69
68
73
74

Low Clouds (% Sky Obscured)

58
50
31
42
20
28
14
15
14
14
10
5
0
0
0
0
6
13
19
15
11
6
17
28

Medium Clouds (% Sky Obscured)

46
41
36
31
27
22
17
19
18
19
16
13
12
18
27
38
47
53
55
49
47
42
48
49

High Clouds (% Sky Obscured)

38
26
6
14
25
67
74
85
89
99
100
100
100
100
100
100
84
100
75
62
69
68
55
29

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
10
11
11
11
11
12
12
12
12
12
11
11
11
12
11
11
9
7
5
5
4
4
3

Relative Humidity (%)

37
37
40
41
40
43
49
53
58
60
64
66
68
72
73
71
66
54
44
37
33
29
26
23

Pressure (mb)

1022
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1019
1019
1019
1018
1018
1018
1018
1017
1016
1016
1015

Ozone (du)

316
315
315
315
315
314
314
315
316
318
319
320
321
323
326
328
328
328
329
329
329
329
330
331

Friday 24

Waxing Gibbous 80%

17:51

00:41

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

Sun - Rise: 05:14, Set: 21:02, Transit: 13:07. Moon - Rise: 17:51, 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)

74
74
69
62
63
81
79
76
36
39
81
87
93
95
97
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

35
27
16
4
13
49
40
24
4
0
0
0
0
1
2
3
11
16
20
41
65
90
86
81

Medium Clouds (% Sky Obscured)

52
49
50
46
49
65
42
39
36
39
35
35
31
38
45
53
39
64
89
92
96
100
87
73

High Clouds (% Sky Obscured)

2
1
0
0
2
2
68
61
8
12
72
77
81
86
92
100
100
100
100
91
84
79
65
47

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

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

Chance of Frost

Temperature (°C)

26
27
27
26
26
25
23
22
21
20
19
18
17
17
17
17
17
18
19
21
21
21
21
22

Feels Like (°C)

24
25
25
25
25
24
18
18
18
18
17
15
14
14
14
14
14
14
15
15
16
18
19
18

Dew Point (°C)

2
2
1
1
2
3
5
6
7
9
10
10
9
9
10
11
9
8
7
6
8
9
11
10

Relative Humidity (%)

21
20
18
19
20
24
31
35
41
48
54
57
60
62
65
67
60
52
44
38
43
46
50
46

Pressure (mb)

1014
1013
1012
1012
1011
1011
1011
1012
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1008
1008
1008

Ozone (du)

331
332
332
332
331
329
328
329
329
330
332
332
332
332
332
333
334
336
337
339
340
340
341
341

Saturday 25

Waxing Gibbous 88%

18:53

01:24

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 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 05:15, Set: 21:00, Transit: 13:07. Moon - Rise: 18:53, 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)

99
99
99
100
99
98
97
95
94
93
95
96
97
88
76
58
64
70
76
76
78
80
70
60

Low Clouds (% Sky Obscured)

76
65
56
47
61
77
91
93
92
93
93
92
91
70
49
36
37
41
46
50
55
59
49
39

Medium Clouds (% Sky Obscured)

60
71
80
92
80
66
51
45
37
33
30
26
23
24
25
26
30
38
41
35
36
33
25
21

High Clouds (% Sky Obscured)

35
32
33
33
34
29
18
13
8
4
3
2
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 (%)

2
9
14
18
16
12
5
10
13
16
14
13
10
11
9
2
5
5
4
4
3
0
3
3

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
18
18
18
18
16
16
17
16
15
15
14
14
15
15
14
14
14
14
14
15
16
17
19

Dew Point (°C)

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

Relative Humidity (%)

43
39
44
49
55
59
64
70
72
74
77
77
77
77
74
72
71
59
50
43
42
42
41
37

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1009
1009

Ozone (du)

340
340
339
338
337
335
333
331
332
332
333
336
338
340
343
345
348
349
351
352
351
351
350
346

Sunday 26

Waxing Gibbous 93%

19:43

02:20

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 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK
12 OK

Sun - Rise: 05:16, Set: 20:59, Transit: 13:07. Moon - Rise: 19:43, 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)

52
53
58
66
77
88
100
74
51
26
22
24
20
21
23
22
24
22
21
24
29
34

Low Clouds (% Sky Obscured)

29
24
19
16
37
59
76
71
51
26
22
18
0
0
0
0
3
9
16
20
23
25

Medium Clouds (% Sky Obscured)

15
14
16
19
16
11
5
5
4
4
3
2
1
5
8
12
9
6
3
7
13
20

High Clouds (% Sky Obscured)

0
4
9
13
24
38
50
41
28
11
11
18
20
21
23
20
17
13
9
9
8
7

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
4
6
8
2
1
1
1
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

Wind Speed/Direction (mph)

10
9
9
11
14
11
8
7
5
4
3
3
4
6
6
6
6
7
8
9
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

34
31
34
36
39
48
58
71
77
81
85
84
84
84
80
78
74
65
56
50
43
37

Pressure (mb)

1009
1009
1009
1010
1010
1011
1012
1013
1013
1014
1014
1014
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

343
339
338
338
338
336
334
333
332
331
330
332
334
336
337
338
339
338
337
337
337
337

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

Generated: 20/07/26 15:59:28. Forecast: 20/07/26 to 26/07/26. Timezone: UTC+1.00