Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 18

Waxing Gibbous 80%

16:02

04:09

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

Sun - Rise: 05:39, Set: 21:35, Transit: 13:38. Moon - Rise: 16:02, Set: 04:09. Civil Dark: 22:19 - 04:56. Nautical Dark: 23:20 - 03:54. Astro Dark: 01:28 - N/A

Total Clouds (% Sky Obscured)

67
65
52
65
64
37
42
72
61
20
2
1
0
0
0
0
0
0
26
29
3
4
10
27

Low Clouds (% Sky Obscured)

15
8
10
6
27
26
15
41
13
1
1
0
0
0
0
0
0
0
0
1
2
1
0
0

Medium Clouds (% Sky Obscured)

22
34
20
43
49
0
2
28
25
20
0
0
0
0
0
0
0
0
28
28
0
3
10
27

High Clouds (% Sky Obscured)

6
4
4
5
3
1
2
2
0
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
4
2
4
4
2
2
2
5
9
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
3
42
16
12
18
21
46
45
28
25
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.2
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
18
20
21
22
22
22
20
20
19
18
17
16
15
14
14
13
13
12
12
12
13
14
16

Feels Like (°C)

18
19
20
22
23
24
23
20
20
19
20
19
17
16
15
15
14
14
13
13
13
14
15
17

Dew Point (°C)

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

Relative Humidity (%)

77
70
71
69
66
63
60
67
72
77
81
82
85
89
92
92
92
92
92
93
95
93
86
78

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012

Ozone (du)

396
396
396
396
397
396
396
395
394
392
393
394
393
391
390
390
390
391
393
395
397
395
394
394

Sunday 19

Waxing Gibbous 87%

17:12

04:18

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

Sun - Rise: 05:38, Set: 21:37, Transit: 13:38. Moon - Rise: 17:12, Set: 04:18. Civil Dark: 22:20 - 04:54. Nautical Dark: 23:22 - 03:51. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

32
34
27
39
48
45
41
9
0
0
0
0
0
0
0
0
0
6
13
18
30
91
65
55

Low Clouds (% Sky Obscured)

0
21
22
41
51
47
53
13
0
0
0
0
0
0
0
0
0
4
13
21
28
29
22
25

Medium Clouds (% Sky Obscured)

30
24
15
12
12
22
4
0
0
0
0
0
0
0
0
0
0
0
3
4
27
38
40
40

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
2
0
2
70
39
19

ISS Passover

Visibility (miles)

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

1
5
15
24
28
28
22
7
3
1
0
0
0
0
0
0
0
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

18
19
20
21
21
21
21
20
20
20
19
17
15
14
14
13
13
12
12
12
11
12
14
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
61
59
55
54
59
58
58
57
58
63
71
72
69
70
76
84
89
92
92
92
90
82
76

Pressure (mb)

1013
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

394
395
395
394
393
393
394
395
395
394
394
394
394
395
397
398
398
399
400
400
398
400
402
401

Monday 20

Waxing Gibbous 93%

18:25

04:28

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

Sun - Rise: 05:37, Set: 21:38, Transit: 13:38. Moon - Rise: 18:25, Set: 04:28. Civil Dark: 22:22 - 04:53. Nautical Dark: 23:25 - 03:49. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
73
100
100
100
100
100
75
76
70
65
55
31
23
22
28
31
32
29
34
40
89
92
94

Low Clouds (% Sky Obscured)

34
28
56
64
74
61
66
55
51
37
26
21
26
22
22
26
28
33
40
46
49
55
57
59

Medium Clouds (% Sky Obscured)

35
27
57
47
27
36
100
28
24
64
63
60
6
6
4
7
5
2
0
0
0
0
7
15

High Clouds (% Sky Obscured)

92
69
100
70
24
29
31
28
35
34
36
30
6
0
0
0
0
0
0
0
6
60
65
61

ISS Passover

Visibility (miles)

9
9
8
9
9
9
9
9
7
9
9
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
Very Light Rain
Light Rain
Light Rain
None
Very Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
21
35
52
50
75
37
47
55
62
5
0
0
0
0
0
1
1
0
1
0
0
1
1

Precipitation Amount (mm)

0
0
0
0.2
0.4
0.8
0
0.3
0.5
0.7
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
18
17
16
16
17
17
17
17
17
17
16
16
15
15
15
14
15
15
15
14
14
14
15

Dew Point (°C)

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

Relative Humidity (%)

71
66
67
68
72
65
66
71
70
70
74
82
89
90
92
93
93
95
95
93
93
92
84
78

Pressure (mb)

1012
1012
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1008
1008
1008
1008
1008
1008
1008

Ozone (du)

401
401
402
402
403
402
403
404
406
406
407
408
407
406
405
406
409
408
407
408
405
401
400
398

Tuesday 21

Waxing Gibbous 97%

19:41

04:42

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:36, Set: 21:40, Transit: 13:38. Moon - Rise: 19:41, Set: 04:42. Civil Dark: 22:24 - 04:51. Nautical Dark: 23:27 - 03:47. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

58
67
91
88
77
68
64
76
89
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

62
52
47
47
40
25
9
19
29
38
47
47
62
54
52
57
68
75
85
83
82
80
86
93

Medium Clouds (% Sky Obscured)

22
27
30
33
22
11
5
14
37
45
63
82
100
98
97
95
97
99
100
100
100
100
100
100

High Clouds (% Sky Obscured)

8
20
61
61
62
64
73
78
88
100
100
100
100
100
100
100
100
100
100
100
100
100
89
100

ISS Passover

Visibility (miles)

9
9
9
9
4
4
4
3
4
8
8
9
6
9
9
9
9
7
2
0
0
0
0
0

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

Precipitation Probability (%)

0
1
1
0
3
6
19
33
50
93
93
65
95
76
37
56
93
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.8
0.7
0
0.6
0.3
0
0
0.3
0.8
1.4
2.3
2.4
1.2
0.9
0.8

Wind Speed/Direction (mph)

3
3
3
4
4
5
6
8
8
7
7
9
7
6
8
8
8
8
9
10
8
9
10
12

Chance of Frost

Temperature (°C)

17
18
19
20
21
21
20
20
18
17
16
15
14
14
14
14
14
14
14
14
14
14
14
14

Feels Like (°C)

17
20
20
20
21
21
20
19
17
17
15
13
14
13
13
13
13
13
12
12
13
13
12
11

Dew Point (°C)

12
12
12
12
12
12
12
13
14
14
15
14
14
14
14
13
13
13
13
13
13
13
13
13

Relative Humidity (%)

73
66
61
58
58
56
57
65
74
86
93
95
96
98
96
95
95
96
98
96
98
98
98
98

Pressure (mb)

1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1005
1005
1005
1004
1004
1003
1003
1003

Ozone (du)

396
392
387
385
380
375
371
369
370
373
373
373
372
372
373
374
373
373
376
377
377
377
376
377

Wednesday 22

Waxing Gibbous 100%

21:00

05:00

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:34, Set: 21:41, Transit: 13:38. Moon - Rise: 21:00, Set: 05:00. Civil Dark: 22:25 - 04:50. Nautical Dark: 23:30 - 03:45. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
94
69
83
92
100
99
97
96
90
84
79
71
66
56
57
58

Low Clouds (% Sky Obscured)

100
95
90
85
83
83
82
79
72
66
74
71
69
76
79
86
86
86
90
93
97
95
91
88

Medium Clouds (% Sky Obscured)

100
92
93
92
48
50
43
43
39
38
58
78
97
80
63
46
44
32
26
27
28
29
39
49

High Clouds (% Sky Obscured)

100
100
100
100
84
89
85
77
93
62
66
83
100
95
92
88
74
59
46
33
22
16
28
34

ISS Passover

Visibility (miles)

0
0
9
9
9
9
9
9
9
9
9
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

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

Precipitation Probability (%)

95
60
44
37
40
37
33
39
37
29
67
59
56
43
33
28
17
13
12
15
25
29
28
37

Precipitation Amount (mm)

0.7
0.2
0
0
0
0
0
0
0
0
0.4
0.2
0.3
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
14
14
14
14
14
14
15
15
14
14
14
13
13
13
13
13
13
13
13
13
13
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
95
95
92
92
89
76
75
80
83
87
92
92
93
95
95
95
93
92
87
83
75

Pressure (mb)

1003
1003
1004
1004
1004
1005
1006
1006
1007
1007
1007
1009
1010
1010
1010
1011
1011
1011
1011
1012
1012
1012
1013
1013

Ozone (du)

379
381
380
379
380
384
385
379
369
360
357
359
360
362
364
366
368
369
369
370
374
377
381
381

Thursday 23

Full Moon 100%

22:20

05:26

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
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad

Sun - Rise: 05:33, Set: 21:42, Transit: 13:38. Moon - Rise: 22:20, Set: 05:26. Civil Dark: 22:27 - 04:48. Nautical Dark: 23:32 - 03:43. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

54
53
53
52
60
59
66
69
73
77
62
49
32
33
30
32
51
68
88
77
65
53
49
46

Low Clouds (% Sky Obscured)

84
88
87
85
85
80
77
72
76
78
55
40
25
23
25
32
44
53
56
58
55
52
50
49

Medium Clouds (% Sky Obscured)

55
60
60
60
53
46
27
23
20
17
16
16
15
20
20
30
30
30
30
29
27
29
35
37

High Clouds (% Sky Obscured)

40
39
43
56
66
66
46
31
14
7
5
3
1
1
2
3
26
49
72
64
55
42
31
18

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

44
52
52
56
48
38
24
48
54
57
42
32
29
33
34
41
27
15
17
28
19
2
7
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
15
15
16
16
16
16
16
16
15
14
14
13
13
13
12
12
12
12
12
12
13
13
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
61
57
54
51
50
49
48
56
64
73
78
80
84
87
89
90
90
93
95
90
89
86
80

Pressure (mb)

1014
1014
1015
1015
1015
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019
1019
1020

Ozone (du)

380
379
377
374
372
371
370
370
371
373
374
374
373
373
372
372
371
371
371
371
370
369
368
368

Friday 24

Waning Gibbous 98%

23:36

06:05

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

Sun - Rise: 05:32, Set: 21:44, Transit: 13:38. Moon - Rise: 23:36, Set: 06:05. Civil Dark: 22:29 - 04:47. Nautical Dark: 23:34 - 03:41. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

47
62
77
91
91
92
92
91
91
90
87
84
84
77
72
64

Low Clouds (% Sky Obscured)

50
49
50
51
57
61
64
62
60
57
46
36
24
28
30
34

Medium Clouds (% Sky Obscured)

39
33
30
24
18
12
10
15
19
24
26
31
34
28
21
14

High Clouds (% Sky Obscured)

8
33
58
83
83
82
82
86
90
94
92
84
82
63
36
20

ISS Passover

Visibility (miles)

9
9
9
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

Precipitation Type

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

Precipitation Probability (%)

4
8
10
12
23
23
12
20
16
4
7
6
1
3
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
69
67
65
64
66
67
69
71
70
72
75
79
81
81
81

Pressure (mb)

1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

368
368
367
367
366
366
367
367
367
367
368
367
367
367
367
368

Forecast for Leiden, Gemeente Leiden, Netherlands (52.16,4.50)

Generated: 18/05/24 09:30:29. Forecast: 18/05/24 to 24/05/24. Timezone: UTC+2.00