Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 15

Waning Crescent 3%

03:55

19:33

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:06, Set: 20:47, Transit: 12:57. Moon - Rise: 03:55, Set: 19:33. Civil Dark: 21:29 - 04:24. Nautical Dark: 22:27 - 03:26. Astro Dark: 23:58 - 01:55

Total Clouds (% Sky Obscured)

42
61
70
76
100
99
99
100
99
100
96
97
83
36
69
50
46
21
73
87
65
63
57
61

Low Clouds (% Sky Obscured)

42
56
52
34
36
35
29
8
67
88
65
47
44
33
35
35
36
21
23
25
23
20
28
46

Medium Clouds (% Sky Obscured)

42
61
70
76
100
99
99
99
99
100
96
97
83
36
18
50
46
21
73
12
13
13
16
6

High Clouds (% Sky Obscured)

42
61
70
76
97
49
68
100
71
50
50
47
14
6
6
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
8
7
6
5
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 (%)

5
1
0
0
0
0
0
0
0
0
4
25
31
42
46
48
44
40
37
33
19
3
2
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
4
3
2
2
1
1
2
3
4
5
7
8
9
10
10
9
10
11
10
9
6
5
4

Dew Point (°C)

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

Relative Humidity (%)

90
93
94
94
96
94
94
93
87
78
68
62
62
64
65
65
71
74
72
73
78
82
87
91

Pressure (mb)

1004
1005
1005
1005
1006
1006
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009

Ozone (du)

419
417
414
413
413
413
412
411
410
410
411
413
414
413
414
416
418
422
427
428
422
415
411
407

Saturday 16

New Moon 0%

04:16

21:09

00 Bad
01 OK
02 OK
03 OK
04 OK
05 OK
06 Bad
07 Good
08 Good
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 Bad
22 Bad
23 Bad

Sun - Rise: 05:05, Set: 20:49, Transit: 12:57. Moon - Rise: 04:16, Set: 21:09. Civil Dark: 21:31 - 04:22. Nautical Dark: 22:29 - 03:24. Astro Dark: N/A - 01:49

Total Clouds (% Sky Obscured)

37
10
10
15
3
8
44
4
0
85
95
96
100
91
79
87
95
90
98
99
100
100
100
100

Low Clouds (% Sky Obscured)

30
0
0
0
0
0
0
0
0
55
7
44
77
42
77
81
95
80
77
82
78
80
74
77

Medium Clouds (% Sky Obscured)

0
0
0
0
0
3
17
1
0
31
62
90
99
70
44
38
40
39
66
86
98
98
97
99

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
21
65
88
100
100
90
41

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
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
Very Light Rain
None
Light Rain

Precipitation Probability (%)

10
4
16
13
12
2
1
0
0
0
4
18
9
23
39
41
24
27
27
22
36
45
49
63

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0.4

Wind Speed/Direction (mph)

5
5
3
2
4
6
6
7
7
8
9
9
9
10
9
14
11
13
10
11
11
10
9
8

Chance of Frost

Temperature (°C)

6
5
4
4
3
3
3
5
7
10
11
12
12
13
13
12
12
12
12
11
11
10
10
10

Feels Like (°C)

3
3
2
2
1
1
1
3
6
7
9
9
8
9
9
8
8
8
9
8
7
7
7
7

Dew Point (°C)

4
4
3
2
2
2
2
3
4
5
3
3
3
5
5
6
8
6
6
6
6
8
9
9

Relative Humidity (%)

88
88
88
88
88
91
91
88
79
70
59
54
53
58
58
65
75
64
65
71
73
84
90
93

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009

Ozone (du)

406
404
403
401
401
401
400
400
399
400
401
402
401
399
397
397
397
397
396
394
393
390
388
388

Sunday 17

Waxing Crescent 1%

04:46

22:39

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:03, Set: 20:50, Transit: 12:57. Moon - Rise: 04:46, Set: 22:39. Civil Dark: 21:33 - 04:21. Nautical Dark: 22:32 - 03:22. Astro Dark: 00:04 - 01:43

Total Clouds (% Sky Obscured)

98
100
100
98
76
75
89
93
99
100
97
100
100
100
100
100
100
100
100
100
100
100
99
95

Low Clouds (% Sky Obscured)

80
76
83
87
67
71
63
63
92
83
79
76
64
72
66
62
67
55
58
56
54
52
57
49

Medium Clouds (% Sky Obscured)

97
100
94
52
30
21
11
88
95
100
95
100
100
98
33
83
100
100
100
100
100
100
96
74

High Clouds (% Sky Obscured)

58
100
66
23
0
3
59
45
45
41
38
100
100
92
100
100
100
100
100
100
100
100
84
64

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

68
60
45
23
17
8
10
10
14
29
50
65
85
91
95
95
95
95
79
66
66
43
27
16

Precipitation Amount (mm)

0.4
0.2
0
0
0
0
0
0
0
0
0
0.3
0.5
0.6
1.1
0.9
1.1
0.8
0.3
0.4
0.3
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
9
9
9
9
8
8
9
9
9
8
7
7
7
7
7
8
9
9
8
8
7
7
7

Relative Humidity (%)

96
98
96
96
96
96
98
95
91
86
79
70
64
64
64
64
69
76
84
81
84
85
88
88

Pressure (mb)

1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1009
1010
1010
1010

Ozone (du)

385
388
391
395
400
401
399
398
399
401
402
405
408
413
414
415
415
416
415
414
413
417
418
422

Monday 18

Waxing Crescent 5%

05:31

23:54

00 Bad
01 Bad
02 OK
03 Good
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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:02, Set: 20:52, Transit: 12:57. Moon - Rise: 05:31, Set: 23:54. Civil Dark: 21:34 - 04:19. Nautical Dark: 22:34 - 03:19. Astro Dark: 00:11 - 01:35

Total Clouds (% Sky Obscured)

80
62
27
6
36
43
54
57
59
38
50
80
91
91
90
89
91
94
96
97
99
100
100
100

Low Clouds (% Sky Obscured)

36
24
12
2
28
25
25
21
24
25
31
43
53
53
54
52
40
38
43
58
69
81
86
92

Medium Clouds (% Sky Obscured)

58
57
24
1
22
29
36
26
37
14
12
65
27
28
79
35
86
92
91
97
99
100
99
99

High Clouds (% Sky Obscured)

41
29
14
0
0
0
0
0
0
0
0
0
6
16
40
31
3
4
24
42
70
93
94
96

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

3
2
3
0
12
9
26
7
37
25
35
48
49
53
59
52
49
43
33
22
33
59
78
87

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0.3
0
0
0
0
0
0
0.3
0.5
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

8
7
7
6
6
6
7
7
8
10
12
13
13
14
14
14
14
14
13
12
12
11
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
90
91
93
94
94
93
93
93
91
72
68
70
71
70
73
74
74
80
84
87
91
95
96

Pressure (mb)

1010
1010
1010
1010
1010
1010
1010
1010
1011
1011
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1010
1009

Ozone (du)

427
431
433
434
432
430
430
434
427
424
419
407
399
396
392
391
391
387
382
378
376
375
375
376

Tuesday 19

Waxing Crescent 12%

06:36

No Set

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
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 05:01, Set: 20:53, Transit: 12:57. Moon - Rise: 06:36, Set: No Set. Civil Dark: 21:36 - 04:18. Nautical Dark: 22:37 - 03:17. Astro Dark: 00:19 - 01:25

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
95
91
87
90
95
100
94
88
83
81
81
80
84
88
91
94
97

Low Clouds (% Sky Obscured)

96
97
99
100
97
94
91
82
73
64
60
56
52
56
59
63
62
61
61
63
65
68
73
79

Medium Clouds (% Sky Obscured)

97
94
93
41
40
47
50
42
35
28
39
69
78
72
67
66
51
36
22
21
20
19
22
28

High Clouds (% Sky Obscured)

98
98
99
85
88
81
80
54
30
2
53
64
100
73
47
25
20
13
11
12
13
7
21
37

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
68
61
57
62
70
67
57
42
36
32
38
53
55
60
57
52
47
41
32
22
25
27

Precipitation Amount (mm)

0.8
0.6
0
0.3
0
0.2
0.4
0.3
0.2
0
0
0
0
0.2
0.2
0.3
0.2
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

10
11
11
11
12
12
12
12
13
13
15
16
17
17
16
16
15
15
15
15
14
14
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
95
96
93
90
92
92
87
77
69
78
79
80
83
84
86
87
87
86
86
87

Pressure (mb)

1008
1007
1006
1006
1005
1005
1005
1006
1006
1007
1007
1007
1007
1007
1007
1008
1008
1008
1008
1009
1009
1010
1010
1011

Ozone (du)

378
381
389
392
392
390
388
384
385
386
383
379
380
382
384
386
389
389
389
389
388
387
386
385

Wednesday 20

Waxing Crescent 21%

07:58

00:48

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 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 04:59, Set: 20:55, Transit: 12:57. Moon - Rise: 07:58, Set: 00:48. Civil Dark: 21:38 - 04:16. Nautical Dark: 22:39 - 03:15. Astro Dark: 00:28 - 01:11

Total Clouds (% Sky Obscured)

100
100
99
99
95
92
91
93
94
96
90
82
76
73
68
57
46
36
23
48
74
100
100
100

Low Clouds (% Sky Obscured)

84
87
89
92
82
74
72
79
84
92
77
62
47
60
68
57
46
29
0
4
8
13
20
25

Medium Clouds (% Sky Obscured)

35
30
25
34
34
29
21
11
5
4
5
3
11
27
46
50
40
28
14
32
47
40
31
26

High Clouds (% Sky Obscured)

57
43
38
34
16
7
3
2
1
0
0
0
0
0
0
0
3
4
8
39
70
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
8
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 (%)

29
31
33
31
33
30
23
24
25
28
32
37
44
42
38
29
26
22
9
11
8
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
12
11
11
12
12
12
12
12
13
14
15
15
16
16
16
15
14
13
12
10
9
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
8
9
9
9
8
8
9
10
10
10
10
11
16
15
15
15
16
16
14
14
14
13

Dew Point (°C)

11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
11
11
12
12
13
13
13
12
12

Relative Humidity (%)

89
90
90
92
92
92
92
92
89
87
86
79
72
67
64
61
59
63
69
74
79
83
89
90

Pressure (mb)

1011
1011
1012
1012
1012
1013
1013
1014
1015
1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1019
1019
1020
1021
1021

Ozone (du)

385
384
385
386
386
387
387
387
382
377
372
366
360
353
351
349
348
346
344
342
342
341
340
340

Thursday 21

Waxing Crescent 31%

09:28

01:23

Sun - Rise: 04:58, Set: 20:56, Transit: 12:57. Moon - Rise: 09:28, Set: 01:23. Civil Dark: 21:40 - 04:14. Nautical Dark: 22:41 - 03:13. Astro Dark: 00:43 - N/A

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 15/05/26 00:50:34. Forecast: 15/05/26 to 21/05/26. Timezone: UTC+1.00