Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 17

Waxing Crescent 20%

08:56

01:45

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 05:01, Set: 21:01, Transit: 13:02. Moon - Rise: 08:56, Set: 01:45. Civil Dark: 21:46 - 04:16. Nautical Dark: 22:51 - 03:10. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

74
46
41
72
62
87
97
98
98
93
87
80
100
100
100
100
100
100
100
100
95
95
100
96

Low Clouds (% Sky Obscured)

70
31
23
66
17
33
29
25
25
9
7
14
100
100
100
100
100
100
100
99
91
59
98
67

Medium Clouds (% Sky Obscured)

22
27
34
24
13
42
41
28
16
17
29
18
10
9
8
3
11
25
32
43
58
90
88
88

High Clouds (% Sky Obscured)

12
13
10
13
51
77
95
96
97
91
84
77
40
4
2
0
2
31
54
41
19
20
40
61

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
75
99
17
1
2
2
2
1
0
0
0

Precipitation Type

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

Precipitation Probability (%)

23
37
48
61
82
52
51
54
54
53
52
56
47
39
39
18
20
25
37
18
14
16
21
41

Precipitation Amount (mm)

0.13
0.22
0.31
0.47
0.43
0.29
0.33
0.57
0.27
0.25
0.11
0.27
0.17
0.13
0.06
0.02
0
0.04
0.08
0.03
0.03
0.04
0.06
0.22

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
69
72
74
78
79
82
87
90
91
93
95
96
96
95
95
97
99
100
99
98
95
92
90

Pressure (mb)

996
996
995
995
995
995
995
995
996
996
997
998
999
999
1000
1000
1001
1001
1002
1002
1002
1003
1003
1004

Ozone (du)

414
406
405
406
407
410
412
408
405
401
398
396
395
394
390
391
391
391
391
396
397
399
400
399

Tuesday 18

Waxing Crescent 29%

10:08

02:19

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

Sun - Rise: 04:59, Set: 21:03, Transit: 13:02. Moon - Rise: 10:08, Set: 02:19. Civil Dark: 21:48 - 04:14. Nautical Dark: 22:54 - 03:07. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

99
94
80
81
72
31
60
61
24
45
44
38
43
70
88
89
81
64
65
48
28
27
32
31

Low Clouds (% Sky Obscured)

88
30
18
23
36
17
22
22
4
2
2
2
2
2
0
1
1
2
0
2
11
17
19
21

Medium Clouds (% Sky Obscured)

77
68
61
70
59
13
30
15
2
1
2
2
2
2
1
2
16
34
20
8
4
20
25
23

High Clouds (% Sky Obscured)

79
84
64
52
40
19
41
51
20
44
42
37
41
69
88
89
77
56
57
44
20
1
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

46
55
57
53
36
22
19
13
3
0
0
0
0
10
9
5
0
0
0
8
6
5
5
9

Precipitation Amount (mm)

0.3
0.41
0.51
0.48
0.25
0.16
0.13
0.1
0.01
0
0
0
0
0.03
0.02
0.01
0
0
0
0.02
0.02
0.03
0.05
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
87
84
79
73
68
66
65
68
72
77
81
84
89
90
90
92
94
95
94
90
81
75
71

Pressure (mb)

1004
1005
1005
1006
1006
1006
1006
1007
1008
1009
1009
1010
1010
1009
1009
1009
1010
1010
1011
1010
1010
1011
1011
1011

Ozone (du)

396
392
389
388
389
391
393
395
397
397
397
396
394
393
391
388
385
383
382
386
387
387
387
388

Wednesday 19

First Quarter 39%

11:25

02:46

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

Sun - Rise: 04:58, Set: 21:04, Transit: 13:02. Moon - Rise: 11:25, Set: 02:46. Civil Dark: 21:50 - 04:12. Nautical Dark: 22:56 - 03:05. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

25
30
34
38
41
70
62
56
81
95
73
61
47
49
48
56
48
41
49
41
49
46
31
32

Low Clouds (% Sky Obscured)

20
13
18
24
27
32
30
31
26
31
40
29
16
28
23
36
19
31
41
31
39
38
21
13

Medium Clouds (% Sky Obscured)

18
27
32
35
36
55
40
34
45
69
45
37
35
30
37
31
45
31
29
27
29
32
22
20

High Clouds (% Sky Obscured)

0
0
0
0
3
44
40
34
72
91
52
36
25
23
23
16
4
0
0
0
0
1
2
11

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

9
9
8
4
5
5
5
3
2
1
0
0
0
0
0
0
0
0
0
4
4
11
8
7

Precipitation Amount (mm)

0.1
0.12
0.12
0.08
0.1
0.08
0.07
0.03
0.01
0.01
0
0
0
0
0
0
0
0
0
0.01
0.02
0.1
0.08
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
14
15
16
15
15
15
14
13
11
8
7
6
5
5
5
4
4
5
7
10
12
13
13

Dew Point (°C)

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

Relative Humidity (%)

68
65
60
54
52
52
56
59
63
69
74
78
80
84
86
88
90
92
94
95
90
83
75
68

Pressure (mb)

1012
1011
1011
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1015
1015
1016
1016
1016

Ozone (du)

388
388
388
386
386
386
385
387
387
386
386
387
387
384
384
386
387
387
388
387
387
386
385
385

Thursday 20

Waxing Gibbous 50%

No Rise

03:06

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

Sun - Rise: 04:56, Set: 21:06, Transit: 13:02. Moon - Rise: No Rise, Set: 03:06. Civil Dark: 21:52 - 04:10. Nautical Dark: 22:59 - 03:02. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

60
70
52
52
38
25
17
13
13
13
13
13
13
0
0
0
0
0
0
98
98
98
98
98

Low Clouds (% Sky Obscured)

50
38
11
16
17
16
11
6
6
6
6
6
6
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

20
48
37
32
23
23
15
10
10
10
10
10
10
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

27
37
31
35
17
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
7
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

Very Light Rain
None
None
None
None
None
None
None
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

Precipitation Probability (%)

8
5
4
3
3
3
3
3
3
2
2
2
2
2
0
0
0
0
3
29
24
14
9
9

Precipitation Amount (mm)

0.16
0.1
0.05
0.04
0.03
0.03
0.01
0.03
0.03
0.02
0.01
0.01
0.01
0.01
0
0
0
0
0.01
0.19
0.19
0.14
0.11
0.11

Wind Speed/Direction (mph)

12
13
14
14
14
13
12
9
8
7
6
5
5
4
4
4
5
5
5
5
6
7
8
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
16
16
15
15
14
14
13
11
10
8
7
6
6
5
5
5
5
6
8
12
13
15

Dew Point (°C)

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

Relative Humidity (%)

63
59
54
50
50
53
59
66
72
78
84
87
91
92
92
93
95
96
97
96
91
83
76
71

Pressure (mb)

1016
1017
1017
1017
1017
1018
1018
1019
1019
1020
1020
1020
1021
1020
1021
1020
1020
1020
1020
1019
1019
1018
1017
1017

Ozone (du)

386
389
387
383
381
380
380
377
376
377
376
376
377
381
381
380
378
373
370
365
365
366
366
364

Friday 21

Waxing Gibbous 61%

12:46

03:23

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 04:55, Set: 21:08, Transit: 13:02. Moon - Rise: 12:46, Set: 03:23. Civil Dark: 21:54 - 04:09. Nautical Dark: 23:02 - 02:59. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

98
100
100
100
100
100
100
100
100
100
100
100
100
34
34
34
34
34
34
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
49
49
49
49
49
49
100
100
100
100
100
100
17
17
17
17
17
17
99
99
99
99
99

Medium Clouds (% Sky Obscured)

0
100
100
100
100
100
100
41
41
41
41
41
41
29
29
29
29
29
29
92
92
92
92
92

High Clouds (% Sky Obscured)

98
94
94
94
94
94
94
0
0
0
0
0
0
0
0
0
0
0
0
84
84
84
84
84

ISS Passover

Visibility (miles)

8
10
9
9
8
9
9
10
10
10
10
10
10
10
8
9
7
9
9
6
6
9
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
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

7
22
19
15
10
15
35
37
39
22
21
41
30
21
40
42
51
50
53
60
44
35
22
18

Precipitation Amount (mm)

0.06
0.58
0.49
0.31
0.2
0.18
0.28
0.3
0.25
0.11
0.08
0.21
0.16
0.19
0.55
0.44
0.53
0.41
0.31
0.48
0.19
0.13
0.07
0.09

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
63
63
65
69
75
83
81
85
85
88
93
94
95
96
97
98
97
95
96
96
96
94
89

Pressure (mb)

1016
1016
1015
1015
1014
1014
1013
1017
1016
1015
1014
1013
1012
1009
1008
1007
1006
1005
1004
1005
1005
1004
1003
1002

Ozone (du)

361
362
362
363
362
361
359
341
339
339
341
342
346
357
361
364
366
371
372
368
368
368
369
371

Saturday 22

Waxing Gibbous 72%

14:09

03:38

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 04:54, Set: 21:09, Transit: 13:02. Moon - Rise: 14:09, Set: 03:38. Civil Dark: 21:56 - 04:07. Nautical Dark: 23:05 - 02:57. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
90
90
90
90
90
90
88
88
88
88
88
88
82
82
82
82
82
82
90
90
90
90
90

Low Clouds (% Sky Obscured)

99
10
10
10
10
10
10
42
42
42
42
42
42
48
48
48
48
48
48
84
84
84
84
84

Medium Clouds (% Sky Obscured)

92
88
88
88
88
88
88
56
56
56
56
56
56
61
61
61
61
61
61
55
55
55
55
55

High Clouds (% Sky Obscured)

84
20
20
20
20
20
20
74
74
74
74
74
74
54
54
54
54
54
54
6
6
6
6
6

ISS Passover

Visibility (miles)

10
10
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

26
29
51
54
55
59
65
61
60
58
54
53
54
54
53
53
52
48
41
33
25
19
18
18

Precipitation Amount (mm)

0.11
0.1
0.23
0.26
0.26
0.26
0.27
0.21
0.2
0.16
0.15
0.14
0.16
0.17
0.18
0.21
0.22
0.19
0.14
0.09
0.06
0.04
0.05
0.05

Wind Speed/Direction (mph)

16
17
17
17
17
16
15
18
18
17
17
17
16
16
16
17
17
17
17
17
17
17
17
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
84
82
81
82
87
93
92
95
95
95
96
96
97
96
96
97
97
98
99
99
97
95
90

Pressure (mb)

1001
1000
999
998
998
997
996
995
994
993
993
992
992
991
991
990
990
990
990
990
991
991
992
994

Ozone (du)

373
373
369
366
365
366
368
361
361
362
362
363
364
364
365
365
365
366
366
366
365
363
362
363

Sunday 23

Waxing Gibbous 82%

15:34

03:53

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

Sun - Rise: 04:52, Set: 21:11, Transit: 13:02. Moon - Rise: 15:34, Set: 03:53. Civil Dark: 21:57 - 04:05. Nautical Dark: 23:07 - 02:54. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

90
43
43
43
43
43
43
33
33
33
33
33
33
88
88
88
88
88
88
68
68
68
68
68

Low Clouds (% Sky Obscured)

84
11
11
11
11
11
11
18
18
18
18
18
18
84
84
84
84
84
84
58
58
58
58
58

Medium Clouds (% Sky Obscured)

55
23
23
23
23
23
23
23
23
23
23
23
23
29
29
29
29
29
29
43
43
43
43
43

High Clouds (% Sky Obscured)

6
30
30
30
30
30
30
5
5
5
5
5
5
28
28
28
28
28
28
3
3
3
3
3

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

Precipitation Probability (%)

16
14
12
11
10
8
7
7
10
20
26
28
29
38
49
57
58
49
27
11
7
6
4
4

Precipitation Amount (mm)

0.05
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.05
0.13
0.21
0.18
0.13
0.13
0.2
0.32
0.37
0.22
0.07
0.02
0.01
0.01
0.01
0.01

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
15
15
14
14
13
13
12
12
11
11
10
10
7
7
7
7
7
7
10
11
12
12

Dew Point (°C)

11
11
11
11
10
10
10
10
11
10
10
10
10
10
10
10
10
10
9
10
10
9
9
9

Relative Humidity (%)

85
80
77
76
77
79
83
85
88
91
93
94
96
98
99
100
100
100
100
100
96
91
86
82

Pressure (mb)

995
996
997
998
998
999
999
1000
1000
1001
1002
1002
1002
1002
1003
1003
1003
1003
1004
1004
1005
1005
1006
1006

Ozone (du)

366
368
372
377
379
375
370
366
368
371
375
377
379
380
379
378
377
376
374
374
373
374
374
376

Forecast for Sheffield, South Yorkshire, UK (53.38,-1.47)

Generated: 17/05/21 03:24:38. Forecast: 17/05/21 to 23/05/21. Timezone: UTC+1.00