Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 17

Waxing Crescent 29%

08:58

02:07

04 OK
05 OK
06 OK
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
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad

Sun - Rise: 05:01, Set: 20:52, Transit: 12:56. Moon - Rise: 08:58, Set: 02:07. Civil Dark: 21:35 - 04:17. Nautical Dark: 22:36 - 03:14. Astro Dark: 00:28 - 01:07

Total Clouds (% Sky Obscured)

27
20
8
19
64
70
73
58
56
91
100
93
88
95
73
73
73
88
87
91
94
89
82
59

Low Clouds (% Sky Obscured)

25
20
7
19
64
65
45
31
34
88
100
90
44
19
31
19
19
13
17
19
6
1
2
9

Medium Clouds (% Sky Obscured)

11
6
2
0
0
3
25
48
41
16
9
12
78
92
26
27
20
10
9
3
6
8
2
9

High Clouds (% Sky Obscured)

0
0
0
0
0
15
56
30
13
27
31
46
60
73
63
64
65
88
85
89
93
88
81
54

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
9
8
10
8
8
10
8
10
10
9
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
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
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
None
None

Precipitation Probability (%)

0
29
9
11
11
9
10
19
27
33
53
55
56
56
47
44
35
15
16
11
7
8
4
3

Precipitation Amount (mm)

0
0.15
0.01
0.01
0.01
0.01
0.01
0.07
0.09
0.17
0.44
0.43
0.45
0.59
0.42
0.31
0.25
0.05
0.07
0.03
0.04
0.05
0.01
0.01

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
5
5
6
8
11
11
12
12
12
12
12
12
12
12
11
10
8
7
6
5
4
3

Dew Point (°C)

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

Relative Humidity (%)

94
95
97
97
98
97
94
93
93
94
95
95
95
93
90
87
86
87
88
88
85
85
86
87

Pressure (mb)

1000
1001
1001
1002
1003
1004
1004
1004
1005
1005
1006
1006
1006
1006
1007
1007
1008
1009
1009
1009
1010
1009
1010
1010

Ozone (du)

397
395
394
392
389
388
388
389
390
392
391
390
391
390
388
384
382
382
383
384
384
389
391
392

Tuesday 18

Waxing Crescent 39%

10:08

02:35

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

Sun - Rise: 04:59, Set: 20:53, Transit: 12:56. Moon - Rise: 10:08, Set: 02:35. Civil Dark: 21:37 - 04:16. Nautical Dark: 22:38 - 03:12. Astro Dark: 00:45 - N/A

Total Clouds (% Sky Obscured)

59
63
46
40
51
55
41
53
38
45
35
31
56
69
79
77
96
98
97
98
98
98
98
96

Low Clouds (% Sky Obscured)

11
18
17
7
5
33
34
52
35
40
9
20
12
10
27
30
20
37
22
14
11
2
0
1

Medium Clouds (% Sky Obscured)

9
13
10
16
31
43
26
10
15
28
33
29
29
17
25
34
18
27
22
79
95
26
39
59

High Clouds (% Sky Obscured)

56
56
34
34
39
7
3
6
1
2
0
0
40
63
68
67
95
97
96
96
98
97
98
93

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
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
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

Precipitation Probability (%)

0
0
0
8
9
9
9
12
15
26
30
12
18
35
34
43
37
20
19
13
9
10
6
0

Precipitation Amount (mm)

0
0
0
0.01
0.01
0.01
0.02
0.05
0.07
0.11
0.17
0.11
0.16
0.41
0.31
0.39
0.24
0.09
0.07
0.05
0.06
0.05
0.01
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

6
5
6
7
8
10
11
12
13
13
14
15
15
14
14
12
11
10
9
9
8
8
8
7

Feels Like (°C)

3
3
3
4
6
8
11
12
13
13
14
15
15
14
14
12
11
10
8
7
7
6
6
5

Dew Point (°C)

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

Relative Humidity (%)

88
92
94
96
96
94
91
88
85
85
82
73
69
74
79
85
86
88
91
91
90
90
91
91

Pressure (mb)

1011
1011
1011
1011
1012
1012
1012
1013
1013
1012
1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

392
392
391
390
390
390
390
391
392
393
392
391
390
390
389
391
391
392
393
394
395
393
393
394

Wednesday 19

First Quarter 50%

11:24

02:57

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

Sun - Rise: 04:58, Set: 20:55, Transit: 12:56. Moon - Rise: 11:24, Set: 02:57. Civil Dark: 21:38 - 04:14. Nautical Dark: 22:40 - 03:10. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
98
81
26
32
42
46
47
91
94
65
41
44
47
43
38
38
38
38
38
38
24
24
24

Low Clouds (% Sky Obscured)

2
9
21
13
28
41
43
42
90
92
61
28
32
23
9
18
18
18
18
18
18
23
23
23

Medium Clouds (% Sky Obscured)

40
34
10
22
13
11
9
9
13
10
19
23
27
32
39
34
34
34
34
34
34
6
6
6

High Clouds (% Sky Obscured)

94
97
77
0
0
0
5
9
15
20
15
11
1
10
9
8
8
8
8
8
8
0
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

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

Precipitation Probability (%)

0
0
7
9
6
5
5
16
42
52
55
49
39
22
22
23
8
3
2
2
2
2
1
0

Precipitation Amount (mm)

0
0
0.03
0.05
0.03
0.02
0.03
0.14
0.29
0.46
0.54
0.51
0.43
0.25
0.26
0.22
0.05
0.02
0.02
0.01
0.01
0.01
0.01
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
7
7
8
9
10
11
12
13
13
13
13
14
15
15
14
13
11
9
8
8
7
7
6

Feels Like (°C)

5
5
5
6
7
10
11
12
13
13
13
13
14
15
15
14
13
11
8
7
6
5
5
4

Dew Point (°C)

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

Relative Humidity (%)

93
96
98
98
96
92
86
84
84
85
88
83
78
74
74
76
79
83
85
87
88
89
90
91

Pressure (mb)

1014
1014
1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1019
1020
1020
1021
1021
1021
1020
1022
1022

Ozone (du)

393
393
393
395
394
393
391
392
394
395
392
390
387
384
379
373
374
376
376
377
377
378
380
379

Thursday 20

Waxing Gibbous 61%

12:43

03:15

04 OK
05 OK
06 OK
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
03 Bad

Sun - Rise: 04:56, Set: 20:56, Transit: 12:56. Moon - Rise: 12:43, Set: 03:15. Civil Dark: 21:40 - 04:12. Nautical Dark: 22:43 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

24
24
24
98
98
98
98
98
98
100
100
100
100
100
100
100
100
100
100
100
100
77
77
77

Low Clouds (% Sky Obscured)

23
23
23
0
0
0
0
0
0
34
34
34
34
34
34
97
97
97
97
97
97
77
77
77

Medium Clouds (% Sky Obscured)

6
6
6
0
0
0
0
0
0
100
100
100
100
100
100
100
100
100
100
100
100
4
4
4

High Clouds (% Sky Obscured)

0
0
0
98
98
98
98
98
98
98
98
98
98
98
98
87
87
87
87
87
87
0
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
8
8
8

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

Precipitation Probability (%)

0
2
4
11
10
12
10
13
13
33
22
7
6
5
5
2
3
10
19
13
11
13
34
35

Precipitation Amount (mm)

0
0.01
0.04
0.1
0.11
0.09
0.07
0.09
0.09
0.42
0.34
0.11
0.07
0.05
0.07
0.02
0.02
0.09
0.15
0.11
0.06
0.13
0.64
0.7

Wind Speed/Direction (mph)

7
7
7
8
9
10
11
13
14
14
13
15
15
14
13
14
14
14
14
15
16
17
17
17

Chance of Frost

Temperature (°C)

6
6
6
7
9
11
12
13
14
15
15
16
16
15
13
14
13
12
12
11
11
11
11
11

Feels Like (°C)

3
3
3
5
7
11
12
13
14
15
15
16
16
15
13
14
13
12
12
11
11
11
11
11

Dew Point (°C)

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

Relative Humidity (%)

92
95
96
97
96
93
88
83
78
73
70
63
64
68
74
74
78
79
83
84
87
90
91
91

Pressure (mb)

1022
1022
1022
1021
1020
1020
1019
1019
1018
1018
1017
1016
1015
1015
1014
1019
1019
1019
1018
1017
1016
1014
1012
1011

Ozone (du)

377
374
372
364
364
367
368
366
362
367
365
363
361
361
360
340
337
336
337
336
337
342
347
350

Friday 21

Waxing Gibbous 72%

14:05

03:31

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

Sun - Rise: 04:55, Set: 20:58, Transit: 12:56. Moon - Rise: 14:05, Set: 03:31. Civil Dark: 21:42 - 04:11. Nautical Dark: 22:45 - 03:05. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

77
77
77
11
11
11
11
11
11
99
99
99
99
99
99
98
98
98
98
98
98
100
100
100

Low Clouds (% Sky Obscured)

77
77
77
9
9
9
9
9
9
37
37
37
37
37
37
97
97
97
97
97
97
100
100
100

Medium Clouds (% Sky Obscured)

4
4
4
4
4
4
4
4
4
99
99
99
99
99
99
77
77
77
77
77
77
69
69
69

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
97
97
97
97
97
97
40
40
40
40
40
40
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
8
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

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
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
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

34
31
30
62
60
46
32
16
11
8
14
38
51
51
42
27
23
17
14
13
15
16
20
27

Precipitation Amount (mm)

0.56
0.4
0.4
0.49
0.4
0.33
0.25
0.14
0.1
0.09
0.17
0.63
0.97
0.68
0.24
0.12
0.08
0.03
0.02
0.01
0.01
0.02
0.03
0.06

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
96
98
100
97
92
86
82
78
74
71
69
74
77
81
76
80
84
87
89
90
89
90
91

Pressure (mb)

1010
1009
1008
1009
1008
1008
1007
1006
1005
1004
1003
1002
1002
1001
1001
999
999
999
998
998
997
997
996
996

Ozone (du)

355
359
366
360
364
368
371
373
373
370
366
367
365
365
365
367
368
369
369
369
368
367
367
366

Saturday 22

Waxing Gibbous 82%

15:28

03:47

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
03 Bad

Sun - Rise: 04:54, Set: 20:59, Transit: 12:56. Moon - Rise: 15:28, Set: 03:47. Civil Dark: 21:43 - 04:09. Nautical Dark: 22:48 - 03:03. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
98
98
98
98
98
98
47
47
47
47
47
47
69
69
69
69
69
69
50
50
50

Low Clouds (% Sky Obscured)

100
100
100
98
98
98
98
98
98
27
27
27
27
27
27
7
7
7
7
7
7
9
9
9

Medium Clouds (% Sky Obscured)

69
69
69
45
45
45
45
45
45
38
38
38
38
38
38
67
67
67
67
67
67
16
16
16

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
15
15
15
15
15
15
16
16
16
16
16
16
40
40
40

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
9
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
Light Rain
Light Rain
Very Light Rain
Very Light Rain
Light Rain
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
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

33
28
18
16
30
45
54
54
51
47
48
50
52
53
53
51
49
44
40
35
29
23
21
21

Precipitation Amount (mm)

0.09
0.07
0.04
0.04
0.11
0.29
0.46
0.45
0.37
0.35
0.43
0.6
0.7
0.58
0.38
0.24
0.17
0.15
0.15
0.14
0.11
0.08
0.07
0.06

Wind Speed/Direction (mph)

23
24
24
25
26
26
26
26
26
25
24
24
23
23
23
23
22
22
21
21
21
21
20
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
94
93
94
95
97
98
98
98
94
90
88
88
89
92
92
93
92
92
92
92
91
89
89

Pressure (mb)

996
995
995
995
995
995
996
996
997
998
998
999
999
1000
1000
1000
1001
1001
1002
1002
1003
1003
1003
1003

Ozone (du)

366
365
364
363
363
364
364
363
363
363
363
364
364
363
361
361
362
365
367
368
369
370
371
372

Sunday 23

Waxing Gibbous 90%

16:54

04:04

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 OK
02 OK
03 OK

Sun - Rise: 04:53, Set: 21:00, Transit: 12:57. Moon - Rise: 16:54, Set: 04:04. Civil Dark: 21:45 - 04:08. Nautical Dark: 22:50 - 03:01. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

50
50
50
30
30
30
30
30
30
99
99
99
99
99
99
100
100
100
100
100
100
22
22
22

Low Clouds (% Sky Obscured)

9
9
9
19
19
19
19
19
19
17
17
17
17
17
17
70
70
70
70
70
70
5
5
5

Medium Clouds (% Sky Obscured)

16
16
16
6
6
6
6
6
6
87
87
87
87
87
87
100
100
100
100
100
100
20
20
20

High Clouds (% Sky Obscured)

40
40
40
13
13
13
13
13
13
99
99
99
99
99
99
39
39
39
39
39
39
0
0
0

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
10
9
6
6
6
7
9
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
None
None
None
None
None
None
None

Precipitation Probability (%)

20
18
17
17
16
17
18
20
30
36
28
23
20
17
13
10
7
4
3
2
0
0
0
1

Precipitation Amount (mm)

0.06
0.04
0.03
0.02
0.03
0.06
0.08
0.1
0.14
0.2
0.23
0.25
0.25
0.23
0.19
0.14
0.08
0.04
0.01
0.01
0
0
0
0.01

Wind Speed/Direction (mph)

18
18
17
17
17
18
18
17
15
14
14
14
13
12
11
9
7
5
4
5
5
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
7
10
10
11
11
12
13
14
15
16
17
17
16
15
14
13
12
11
10
9
8
8

Dew Point (°C)

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

Relative Humidity (%)

90
91
93
95
95
95
94
93
92
88
79
72
66
63
61
63
69
76
82
87
91
93
93
93

Pressure (mb)

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

Ozone (du)

372
372
371
371
370
370
370
371
372
373
373
372
372
372
372
372
371
370
369
370
371
370
368
365

Forecast for Bourn, Cambridgeshire, UK (52.20,-0.05)

Generated: 17/05/21 04:27:30. Forecast: 17/05/21 to 23/05/21. Timezone: UTC+1.00