Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 17

Waxing Crescent 29%

09:16

02:16

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

Sun - Rise: 05:17, Set: 21:01, Transit: 13:09. Moon - Rise: 09:16, Set: 02:16. Civil Dark: 21:43 - 04:35. Nautical Dark: 22:41 - 03:37. Astro Dark: 00:13 - 01:59

Total Clouds (% Sky Obscured)

4
10
17
9
2
22
63
56
21
17
26
25
28
58
89
96
93
65
45
34
21
41
73
86

Low Clouds (% Sky Obscured)

4
10
16
9
2
21
58
47
4
2
6
17
20
16
27
10
10
12
19
11
8
17
23
38

Medium Clouds (% Sky Obscured)

1
0
3
2
1
5
22
33
20
16
14
18
19
21
18
12
13
12
15
4
5
26
70
81

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
4
14
5
6
44
85
95
92
61
32
27
14
19
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

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

Precipitation Probability (%)

17
19
17
15
13
12
10
9
13
23
25
25
23
19
15
12
13
6
5
4
0
3
7
6

Precipitation Amount (mm)

0.03
0.01
0.03
0.04
0.04
0.04
0.04
0.04
0.08
0.18
0.22
0.19
0.17
0.15
0.1
0.07
0.07
0.03
0.02
0.01
0
0.01
0.03
0.01

Wind Speed/Direction (mph)

11
11
10
10
10
10
11
12
13
14
14
15
16
17
17
17
16
15
13
12
11
9
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
6
7
11
11
12
13
14
14
15
14
14
14
13
13
12
11
7
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

87
88
89
90
90
89
87
86
85
83
81
78
77
77
77
78
79
81
83
84
84
84
84
85

Pressure (mb)

1001
1002
1003
1003
1004
1004
1005
1006
1006
1006
1008
1008
1008
1009
1009
1009
1010
1011
1011
1012
1012
1012
1012
1012

Ozone (du)

383
384
384
385
390
393
394
392
389
385
382
384
385
387
388
390
389
390
391
392
393
392
393
394

Tuesday 18

Waxing Crescent 39%

10:26

02:44

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

Sun - Rise: 05:16, Set: 21:03, Transit: 13:09. Moon - Rise: 10:26, Set: 02:44. Civil Dark: 21:45 - 04:33. Nautical Dark: 22:43 - 03:35. Astro Dark: 00:19 - 01:52

Total Clouds (% Sky Obscured)

18
15
23
27
38
41
41
45
38
45
52
91
97
98
100
99
100
99
94
65
28
31
28
12

Low Clouds (% Sky Obscured)

11
12
13
19
16
31
32
34
16
39
45
31
30
36
34
36
34
16
24
15
23
23
16
9

Medium Clouds (% Sky Obscured)

13
7
18
20
24
27
28
30
31
16
21
24
27
34
79
94
98
96
56
25
13
11
6
7

High Clouds (% Sky Obscured)

0
0
0
1
11
7
3
0
5
8
9
88
95
98
99
98
97
97
89
54
5
13
15
2

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

Precipitation Probability (%)

5
4
3
3
3
0
0
4
10
19
28
28
15
10
8
12
17
15
6
4
5
6
6
6

Precipitation Amount (mm)

0.01
0.01
0.01
0.01
0.01
0
0
0.02
0.11
0.22
0.25
0.23
0.14
0.11
0.08
0.15
0.21
0.12
0.03
0.01
0.02
0.03
0.03
0.04

Wind Speed/Direction (mph)

10
10
11
10
10
11
12
12
13
14
15
14
13
13
14
14
12
11
10
10
10
10
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
6
7
8
11
12
12
13
13
13
14
15
15
14
14
13
12
11
10
10
8
7
7

Dew Point (°C)

7
7
7
7
8
8
8
9
9
10
10
10
10
9
9
9
9
9
9
8
8
8
8
7

Relative Humidity (%)

87
88
89
89
87
83
79
78
78
80
80
76
72
72
72
74
79
83
85
86
88
89
88
88

Pressure (mb)

1012
1012
1012
1013
1013
1014
1014
1014
1014
1015
1014
1014
1015
1014
1015
1015
1014
1014
1015
1015
1015
1015
1015
1015

Ozone (du)

395
394
393
390
389
388
388
388
389
391
393
395
397
399
400
400
398
399
398
398
398
398
398
398

Wednesday 19

First Quarter 50%

11:41

03:07

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

Sun - Rise: 05:14, Set: 21:04, Transit: 13:09. Moon - Rise: 11:41, Set: 03:07. Civil Dark: 21:46 - 04:32. Nautical Dark: 22:45 - 03:33. Astro Dark: 00:26 - 01:45

Total Clouds (% Sky Obscured)

20
16
13
13
13
13
20
40
33
34
38
34
23
9
4
2
1
1
1
1
1
1
38
38

Low Clouds (% Sky Obscured)

12
15
12
13
13
12
19
28
26
27
30
12
7
2
1
0
0
0
0
0
0
0
20
20

Medium Clouds (% Sky Obscured)

15
4
4
4
1
0
9
34
25
27
31
32
22
8
3
2
1
1
1
1
1
1
0
0

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
20
20

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

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

Precipitation Probability (%)

6
5
5
4
3
3
0
0
3
3
3
4
3
3
4
0
3
2
0
0
0
0
9
22

Precipitation Amount (mm)

0.04
0.05
0.05
0.03
0.02
0.01
0
0
0.01
0.01
0.02
0.04
0.03
0.02
0.01
0
0.01
0.01
0
0
0
0
0.09
0.14

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
6
7
8
11
12
13
14
14
15
15
15
14
14
13
13
12
11
10
8
7
7
6

Dew Point (°C)

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

Relative Humidity (%)

88
89
90
90
88
85
80
77
74
71
69
67
68
69
70
72
76
80
82
84
86
87
87
89

Pressure (mb)

1015
1016
1016
1016
1018
1018
1019
1019
1019
1020
1020
1020
1021
1021
1021
1021
1022
1022
1022
1023
1023
1023
1021
1022

Ozone (du)

398
397
397
396
401
400
398
396
394
391
391
388
382
381
381
381
383
380
376
371
367
363
369
369

Thursday 20

Waxing Gibbous 61%

12:59

03:07

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:13, Set: 21:05, Transit: 13:09. Moon - Rise: 12:59, Set: 03:07. Civil Dark: 21:48 - 04:30. Nautical Dark: 22:48 - 03:31. Astro Dark: 00:34 - 01:35

Total Clouds (% Sky Obscured)

38
38
38
38
100
100
100
100
100
100
96
96
96
96
96
96
98
98
98
98
98
98
33
33

Low Clouds (% Sky Obscured)

20
20
20
20
0
0
0
0
0
0
60
60
60
60
60
60
90
90
90
90
90
90
23
23

Medium Clouds (% Sky Obscured)

0
0
0
0
100
100
100
100
100
100
92
92
92
92
92
92
23
23
23
23
23
23
23
23

High Clouds (% Sky Obscured)

20
20
20
20
98
98
98
98
98
98
46
46
46
46
46
46
91
91
91
91
91
91
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
8
7
8
10

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

Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

25
21
19
13
26
21
15
14
11
15
27
34
25
18
27
39
33
29
26
32
51
54
36
43

Precipitation Amount (mm)

0.14
0.12
0.1
0.08
0.27
0.25
0.2
0.16
0.18
0.27
0.3
0.25
0.18
0.15
0.16
0.21
0.18
0.17
0.17
0.21
0.35
0.34
0.41
0.59

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
91
94
95
94
90
87
85
83
81
82
80
80
80
83
84
86
87
86
87
90
92
91
91

Pressure (mb)

1022
1021
1021
1021
1020
1019
1018
1018
1017
1017
1016
1016
1015
1015
1015
1015
1018
1017
1016
1015
1014
1013
1011
1010

Ozone (du)

369
368
368
365
365
362
360
359
359
360
360
358
356
353
352
350
331
331
332
335
337
341
355
360

Friday 21

Waxing Gibbous 72%

14:19

03:27

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:12, Set: 21:07, Transit: 13:09. Moon - Rise: 14:19, Set: 03:27. Civil Dark: 21:50 - 04:29. Nautical Dark: 22:50 - 03:29. Astro Dark: 00:44 - 01:18

Total Clouds (% Sky Obscured)

33
33
33
33
63
63
63
63
63
63
96
96
96
96
96
96
97
97
97
97
97
97
66
66

Low Clouds (% Sky Obscured)

23
23
23
23
41
41
41
41
41
41
45
45
45
45
45
45
48
48
48
48
48
48
17
17

Medium Clouds (% Sky Obscured)

23
23
23
23
42
42
42
42
42
42
94
94
94
94
94
94
97
97
97
97
97
97
63
63

High Clouds (% Sky Obscured)

0
0
0
0
28
28
28
28
28
28
73
73
73
73
73
73
36
36
36
36
36
36
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
9
9
10
10
10
10
10
10
10
10
10
10
10
10

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

Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

22
41
33
38
40
31
22
21
33
41
46
56
59
60
61
60
64
63
63
64
64
65
63
61

Precipitation Amount (mm)

0.11
0.36
0.25
0.26
0.34
0.16
0.15
0.16
0.26
0.29
0.33
0.38
0.37
0.36
0.38
0.42
0.44
0.38
0.34
0.34
0.33
0.33
0.32
0.3

Wind Speed/Direction (mph)

19
20
21
21
19
19
20
21
21
22
22
23
24
24
25
25
28
29
29
30
30
30
30
30

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
10
10
11
11
12
12
12
12
12
12
11
11
10
10
10
10
10
10
10
10
10

Relative Humidity (%)

91
92
92
92
93
91
89
89
87
87
88
90
91
91
90
87
86
88
90
92
93
95
95
95

Pressure (mb)

1009
1008
1007
1006
1008
1007
1006
1005
1004
1004
1003
1002
1001
1001
1000
1000
998
998
998
998
998
997
997
997

Ozone (du)

366
371
375
375
370
374
376
373
367
368
364
366
367
367
367
368
367
369
373
375
377
378
378
378

Saturday 22

Waxing Gibbous 82%

15:42

03:44

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:11, Set: 21:08, Transit: 13:09. Moon - Rise: 15:42, Set: 03:44. Civil Dark: 21:51 - 04:27. Nautical Dark: 22:52 - 03:27. Astro Dark: 01:01 - N/A

Total Clouds (% Sky Obscured)

66
66
66
66
34
34
34
34
34
34
41
41
41
41
41
41
41
41
41
41
41
41
42
42

Low Clouds (% Sky Obscured)

17
17
17
17
20
20
20
20
20
20
26
26
26
26
26
26
14
14
14
14
14
14
31
31

Medium Clouds (% Sky Obscured)

63
63
63
63
29
29
29
29
29
29
29
29
29
29
29
29
15
15
15
15
15
15
31
31

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
24
24
24
24
24
24
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

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

Precipitation Probability (%)

60
60
63
66
62
48
43
38
33
28
21
14
9
7
6
7
8
6
5
5
6
7
8
9

Precipitation Amount (mm)

0.27
0.27
0.31
0.38
0.42
0.38
0.31
0.24
0.19
0.16
0.13
0.1
0.06
0.04
0.04
0.04
0.04
0.02
0.01
0.01
0.01
0.01
0.01
0.02

Wind Speed/Direction (mph)

30
31
32
32
33
32
31
30
30
29
28
28
27
27
26
25
24
23
22
22
21
21
20
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
96
96
96
96
96
98
98
97
95
93
91
88
87
86
84
83
84
85
86
87
88
89
90

Pressure (mb)

997
997
997
998
998
999
1000
1001
1002
1003
1003
1004
1004
1005
1005
1005
1006
1006
1007
1007
1007
1007
1007
1007

Ozone (du)

376
375
374
373
373
375
378
380
380
377
375
373
371
369
368
368
369
370
371
372
373
374
374
373

Sunday 23

Waxing Gibbous 90%

17:07

04:01

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 05:09, Set: 21:10, Transit: 13:09. Moon - Rise: 17:07, Set: 04:01. Civil Dark: 21:53 - 04:26. Nautical Dark: 22:54 - 03:25. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

42
42
42
42
100
100
100
100
100
100
98
98
98
98
98
98
72
72
72
72
72
72
79
79

Low Clouds (% Sky Obscured)

31
31
31
31
13
13
13
13
13
13
16
16
16
16
16
16
22
22
22
22
22
22
64
64

Medium Clouds (% Sky Obscured)

31
31
31
31
58
58
58
58
58
58
97
97
97
97
97
97
27
27
27
27
27
27
53
53

High Clouds (% Sky Obscured)

0
0
0
0
100
100
100
100
100
100
65
65
65
65
65
65
57
57
57
57
57
57
2
2

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

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

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

Precipitation Probability (%)

9
7
6
4
4
7
6
7
6
6
5
4
5
6
5
3
4
0
0
0
5
11
14
10

Precipitation Amount (mm)

0.02
0.03
0.02
0.02
0.01
0.02
0.01
0.01
0.01
0.02
0.02
0.02
0.04
0.05
0.04
0.02
0.01
0
0
0
0.01
0.04
0.07
0.04

Wind Speed/Direction (mph)

21
20
19
17
16
15
14
13
13
12
12
11
10
9
9
8
8
9
10
10
10
10
9
8

Chance of Frost

Temperature (°C)

10
10
10
10
10
11
12
12
13
13
14
14
15
15
15
14
14
13
12
12
11
11
10
10

Feels Like (°C)

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

Dew Point (°C)

8
9
9
9
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10

Relative Humidity (%)

91
91
91
91
90
89
87
85
83
80
78
76
74
73
74
75
79
82
86
89
91
94
96
97

Pressure (mb)

1007
1007
1008
1008
1008
1007
1007
1007
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

370
369
369
370
371
375
376
377
377
376
376
376
375
375
375
375
375
375
373
371
368
365
362
360

Forecast for Barry, Vale of Glamorgan, UK (51.40,-3.28)

Generated: 17/05/21 03:48:13. Forecast: 17/05/21 to 23/05/21. Timezone: UTC+1.00