Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waning Gibbous 98%

22:45

06:23

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

Sun - Rise: 05:04, Set: 20:56, Transit: 13:00. Moon - Rise: 22:45, Set: 06:23. Civil Dark: 21:38 - 04:22. Nautical Dark: 22:38 - 03:22. Astro Dark: 00:15 - 01:38

Total Clouds (% Sky Obscured)

53
34
31
23
34
62
56
37
29
24
41
52
36
53
47
55
52
49
70
46
36
29
16
13

Low Clouds (% Sky Obscured)

3
3
4
1
6
7
11
20
16
2
35
50
31
39
16
13
24
20
51
29
5
11
0
0

Medium Clouds (% Sky Obscured)

49
23
23
5
10
18
21
10
9
6
6
9
20
34
44
52
44
48
47
44
36
27
16
13

High Clouds (% Sky Obscured)

9
16
12
20
27
53
42
20
15
19
4
0
2
16
0
4
13
6
23
0
0
0
0
0

ISS Passover

Visibility (miles)

9
10
10
10
10
10
10
5
6
7
10
10
10
3
5
8
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

Precipitation Type

None
None
None
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

Precipitation Probability (%)

3
5
2
2
2
2
2
0
2
3
4
8
19
19
16
12
12
14
15
15
12
6
3
2

Precipitation Amount (mm)

0.02
0.05
0.01
0.01
0.01
0.01
0.01
0
0
0.01
0.03
0.06
0.17
0.17
0.07
0.18
0.15
0.14
0.15
0.14
0.11
0.08
0.05
0.02

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
83
84
85
85
84
82
85
82
77
72
69
67
56
53
53
53
53
54
58
60
64
67
69

Pressure (mb)

1011
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1014
1015
1015
1015

Ozone (du)

363
363
362
360
360
360
362
364
363
362
361
360
358
357
358
360
361
360
358
356
354
351
349
348

Tuesday 21

Waning Gibbous 95%

23:45

07:04

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 OK
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: 20:57, Transit: 13:00. Moon - Rise: 23:45, Set: 07:04. Civil Dark: 21:40 - 04:20. Nautical Dark: 22:40 - 03:20. Astro Dark: 00:22 - 01:29

Total Clouds (% Sky Obscured)

9
4
1
0
1
0
4
8
33
58
70
66
56
33
85
99
99
100
92
62
64
52
59
66

Low Clouds (% Sky Obscured)

1
0
0
0
0
0
1
0
0
0
8
18
25
19
1
4
1
36
34
0
2
12
30
21

Medium Clouds (% Sky Obscured)

9
4
1
0
0
0
1
0
0
6
19
3
0
17
85
99
99
100
91
62
64
52
56
63

High Clouds (% Sky Obscured)

0
0
0
0
1
0
2
8
33
58
67
59
43
14
0
0
0
0
0
0
0
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
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
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
2
1
1
1
1
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0.01
0.01
0.01
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
12
11
10
9
9
9
9
11
13
15
17
18
19
20
20
21
21
21
20
18
16
15
13

Feels Like (°C)

13
12
11
8
7
7
7
7
11
13
15
17
18
19
20
20
21
21
21
20
18
16
15
13

Dew Point (°C)

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

Relative Humidity (%)

70
71
71
71
72
74
78
79
75
70
64
60
57
54
51
49
48
48
48
50
54
59
63
67

Pressure (mb)

1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1018
1019
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1020
1020

Ozone (du)

347
346
345
344
343
343
343
343
343
343
344
347
350
351
349
344
340
338
336
334
333
332
331
331

Wednesday 22

Waning Gibbous 89%

No Rise

07:52

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

Sun - Rise: 05:02, Set: 20:58, Transit: 13:00. Moon - Rise: No Rise, Set: 07:52. Civil Dark: 21:42 - 04:19. Nautical Dark: 22:42 - 03:18. Astro Dark: 00:31 - 01:15

Total Clouds (% Sky Obscured)

70
62
52
71
54
88
23
2
1
2
2
5
68
77
84
83
80
77
91
90
50
31
56
47

Low Clouds (% Sky Obscured)

24
9
7
23
22
88
22
2
1
2
2
2
25
2
14
6
8
0
0
8
2
0
5
11

Medium Clouds (% Sky Obscured)

62
57
50
68
48
21
7
1
0
0
1
5
66
76
81
81
78
77
88
88
50
31
56
45

High Clouds (% Sky Obscured)

17
13
3
0
0
0
0
0
0
0
0
0
0
2
19
28
30
12
37
12
1
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
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
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
1
2
2
2
2
2
2
2
1
1
1
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.02
0.04
0.08
0.11
0.12
0.11
0.1
0.08
0.06
0.03
0.01

Wind Speed/Direction (mph)

4
4
3
4
4
4
4
4
3
3
3
3
4
5
6
7
7
7
7
6
6
7
7
7

Chance of Frost

Temperature (°C)

12
11
11
10
9
9
9
10
12
15
16
18
19
20
21
21
21
21
21
20
19
17
15
13

Feels Like (°C)

12
11
11
9
9
8
9
10
12
15
16
18
19
20
21
21
21
21
21
20
19
17
15
13

Dew Point (°C)

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

Relative Humidity (%)

68
68
67
64
63
62
61
59
56
52
50
48
47
47
47
47
48
49
50
50
53
57
61
64

Pressure (mb)

1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1019
1019
1020
1020
1020

Ozone (du)

330
330
331
331
332
332
332
331
331
331
331
331
331
332
333
335
335
334
331
330
331
334
335
335

Thursday 23

Waning Gibbous 82%

00:35

08:48

00 OK
01 OK
02 OK
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: 21:00, Transit: 13:00. Moon - Rise: 00:35, Set: 08:48. Civil Dark: 21:43 - 04:17. Nautical Dark: 22:45 - 03:16. Astro Dark: 00:45 - N/A

Total Clouds (% Sky Obscured)

34
38
48
68
95
98
98
98
98
98
98
98
98
99
99
99
99
99
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

5
3
0
4
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

34
31
45
66
93
96
94
88
88
88
88
88
88
98
98
98
98
98
98
100
100
100
100
100

High Clouds (% Sky Obscured)

0
9
7
4
45
70
84
96
96
96
96
96
96
98
98
98
98
98
98
98
98
98
98
98

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
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
1
1
2
2
2
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0.02
0.02
0.01
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
12
11
10
10
10
10
12
13
16
18
19
21
22
22
23
22
21
21
20
19
17
16
14

Feels Like (°C)

12
12
11
10
9
9
10
12
13
16
18
19
21
22
22
23
22
21
21
20
19
17
16
14

Dew Point (°C)

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

Relative Humidity (%)

66
67
70
73
75
77
77
73
66
58
52
48
45
42
42
43
45
47
49
50
51
52
55
58

Pressure (mb)

1020
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1017
1017
1016
1016
1016
1016
1015
1015
1015
1015
1015

Ozone (du)

333
332
331
331
331
333
336
338
338
337
337
338
340
342
342
342
342
343
344
346
348
349
351
350

Friday 24

Waning Gibbous 73%

01:16

09:49

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: 04:59, Set: 21:01, Transit: 13:00. Moon - Rise: 01:16, Set: 09:49. Civil Dark: 21:45 - 04:16. Nautical Dark: 22:47 - 03:14. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
41
41
41
41
41
41
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
13
13
13
13
13
13
35
35
35
35
35
35
80
80
80
80
80
80
12
12
12
12
12

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
22
22
22
22
22
22
67
67
67
67
67
67
100
100
100
100
100

High Clouds (% Sky Obscured)

98
0
0
0
0
0
0
0
0
0
0
0
0
100
100
100
100
100
100
98
98
98
98
98

ISS Passover

Visibility (miles)

10
10
10
10
10
10
10
8
8
7
7
7
6
7
9
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
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
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
1
2
5
14
32
38
41
36
34
32
29
24
16
9
6
5
4
4
2
1
0
0

Precipitation Amount (mm)

0
0
0.01
0.03
0.08
0.15
0.24
0.3
0.28
0.22
0.2
0.28
0.44
0.52
0.4
0.22
0.13
0.12
0.14
0.14
0.07
0.01
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
67
74
82
87
89
89
87
83
78
72
69
67
65
61
57
56
57
59
62
63
67
69
71

Pressure (mb)

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

Ozone (du)

350
349
347
346
345
347
350
353
357
361
365
368
370
371
368
364
361
357
354
352
350
350
348
345

Saturday 25

Waning Gibbous 64%

01:48

10:53

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

Sun - Rise: 04:58, Set: 21:02, Transit: 13:00. Moon - Rise: 01:48, Set: 10:53. Civil Dark: 21:46 - 04:15. Nautical Dark: 22:49 - 03:12. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
6
6
6
6
6
6
6
6
6
6
6
6
99
99
99
99
99
99
95
95
95
95
95

Low Clouds (% Sky Obscured)

12
6
6
6
6
6
6
0
0
0
0
0
0
98
98
98
98
98
98
59
59
59
59
59

Medium Clouds (% Sky Obscured)

100
0
0
0
0
0
0
4
4
4
4
4
4
65
65
65
65
65
65
45
45
45
45
45

High Clouds (% Sky Obscured)

98
0
0
0
0
0
0
2
2
2
2
2
2
35
35
35
35
35
35
89
89
89
89
89

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

Precipitation Probability (%)

0
2
2
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0

Precipitation Amount (mm)

0
0.01
0.01
0
0
0
0.01
0
0
0
0
0
0
0
0
0
0
0
0.01
0.01
0.01
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
12
11
11
11
11
11
12
13
15
17
18
19
19
20
20
21
21
21
21
20
18
17
16

Feels Like (°C)

13
12
11
11
11
11
11
12
13
15
17
18
19
19
20
20
21
21
21
21
20
18
17
16

Dew Point (°C)

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

Relative Humidity (%)

74
77
79
81
82
84
83
81
77
71
66
62
60
59
57
55
54
55
56
58
60
63
67
70

Pressure (mb)

1015
1015
1015
1015
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1018
1017
1017
1017
1017
1018
1018
1018
1018

Ozone (du)

340
336
334
331
329
326
324
321
319
317
315
314
313
312
309
306
303
300
298
296
296
296
296
295

Sunday 26

Third Quarter 54%

02:15

11:58

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: 04:57, Set: 21:04, Transit: 13:00. Moon - Rise: 02:15, Set: 11:58. Civil Dark: 21:48 - 04:13. Nautical Dark: 22:51 - 03:10. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
98
98
98
98
98
98
100
100
100
100
100
100
98
98
98
98
98
98
95
95
95
95
95

Low Clouds (% Sky Obscured)

59
94
94
94
94
94
94
100
100
100
100
100
100
95
95
95
95
95
95
24
24
24
24
24

Medium Clouds (% Sky Obscured)

45
50
50
50
50
50
50
16
16
16
16
16
16
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

89
68
68
68
68
68
68
91
91
91
91
91
91
91
91
91
91
91
91
92
92
92
92
92

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
6
4
6

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

Precipitation Probability (%)

0
0
0
0
0
4
8
14
14
12
7
4
3
2
2
2
2
2
3
2
4
7
5
9

Precipitation Amount (mm)

0
0
0
0
0
0.01
0.06
0.1
0.1
0.07
0.05
0.04
0.04
0.03
0.03
0.03
0.03
0.02
0.01
0.01
0.04
0.12
0.18
0.11

Wind Speed/Direction (mph)

6
7
7
6
6
6
6
6
7
8
9
10
11
13
11
12
15
10
11
16
14
11
12
11

Chance of Frost

Temperature (°C)

15
14
14
13
12
12
12
12
14
17
19
19
20
20
22
22
23
22
22
21
20
18
17
17

Feels Like (°C)

15
14
14
13
12
12
12
12
14
17
19
19
20
20
22
22
23
22
22
21
20
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

72
75
77
79
83
87
90
90
85
78
73
71
69
67
63
60
58
58
58
60
61
66
69
72

Pressure (mb)

1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

293
292
293
293
294
294
295
296
297
298
300
300
301
302
302
301
301
301
301
302
304
308
311
314

Forecast for Reading, Reading, UK (51.45,-0.98)

Generated: 20/05/19 13:11:16. Forecast: 20/05/19 to 26/05/19. Timezone: UTC+1.00