Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 9

Waning Crescent 8%

02:31

19:43

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

Sun - Rise: 06:18, Set: 21:18, Transit: 13:47. Moon - Rise: 02:31, Set: 19:43. Civil Dark: 21:57 - 05:39. Nautical Dark: 22:49 - 04:48. Astro Dark: 23:55 - 03:42

Total Clouds (% Sky Obscured)

92
71
85
86
37
38
65
78
87
96
78
100
100
100
100
98
92
84
76
65
49
29
43
50

Low Clouds (% Sky Obscured)

1
54
65
3
0
0
0
0
0
0
0
0
0
2
23
29
32
37
42
52
16
11
16
14

Medium Clouds (% Sky Obscured)

17
48
66
24
21
17
18
6
11
33
22
66
87
35
59
28
52
16
12
12
0
0
0
0

High Clouds (% Sky Obscured)

3
2
1
2
2
22
31
71
77
92
76
89
100
100
97
88
34
30
30
35
33
11
19
30

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 (%)

25
23
6
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
1
1
0
0
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)

8
9
6
5
4
5
6
7
6
7
7
7
6
10
10
11
12
11
12
11
12
12
11
11

Chance of Frost

Temperature (°C)

29
28
27
25
23
22
21
21
20
20
19
19
18
19
20
21
21
22
22
22
22
22
22
22

Feels Like (°C)

26
25
25
24
23
21
21
19
18
18
17
18
19
18
18
19
19
19
20
20
20
20
20
20

Dew Point (°C)

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

Relative Humidity (%)

25
24
29
35
38
37
39
43
46
48
56
71
86
78
64
63
60
57
56
54
56
52
46
44

Pressure (mb)

1013
1012
1012
1012
1012
1012
1012
1012
1011
1011
1011
1011
1012
1013
1014
1015
1016
1017
1018
1018
1019
1019
1020
1020

Ozone (du)

321
323
319
318
320
320
319
317
317
317
317
316
316
315
313
313
313
314
314
313
313
312
311
310

Monday 10

Waning Crescent 2%

04:00

20:25

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

Sun - Rise: 06:20, Set: 21:16, Transit: 13:47. Moon - Rise: 04:00, Set: 20:25. Civil Dark: 21:55 - 05:41. Nautical Dark: 22:46 - 04:50. Astro Dark: 23:51 - 03:46

Total Clouds (% Sky Obscured)

62
92
100
91
37
43
45
37
51
100
45
40
8
29
35
37
28
28
34
26
58
57
55
38

Low Clouds (% Sky Obscured)

15
9
9
8
0
2
0
0
0
0
0
0
0
0
0
10
19
22
29
20
18
16
4
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

High Clouds (% Sky Obscured)

57
90
100
89
36
43
45
37
51
100
40
40
7
29
30
18
3
2
5
7
55
55
54
36

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 (%)

0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

21
20
19
18
17
16
15
14
14
13
13
13
12
12
14
16
18
20
21
22
23
24
24
24

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

46
51
56
66
71
72
75
76
74
75
75
75
77
76
67
61
51
44
38
35
32
31
31
30

Pressure (mb)

1020
1021
1021
1021
1022
1022
1023
1024
1024
1024
1024
1024
1025
1025
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025

Ozone (du)

309
309
310
310
311
311
313
314
315
315
315
315
313
313
312
312
311
311
310
311
311
311
312
313

Tuesday 11

Waning Crescent 0%

05:34

20:53

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

Sun - Rise: 06:21, Set: 21:14, Transit: 13:46. Moon - Rise: 05:34, Set: 20:53. Civil Dark: 21:53 - 05:42. Nautical Dark: 22:43 - 04:52. Astro Dark: 23:47 - 03:49

Total Clouds (% Sky Obscured)

59
56
60
67
11
60
78
69
60
31
2
6
14
5
2
1
2
12
3
27
42
56
66
58

Low 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
0
0

Medium Clouds (% Sky Obscured)

3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

59
56
60
67
9
60
78
68
58
30
1
5
14
5
1
1
1
11
2
27
42
56
66
58

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 (%)

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 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)

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

Chance of Frost

Temperature (°C)

24
23
21
18
17
16
15
14
13
13
12
12
11
11
13
16
19
22
24
26
28
29
30
30

Feels Like (°C)

22
21
19
16
15
14
14
13
12
11
11
11
10
10
10
14
18
20
22
24
26
27
28
28

Dew Point (°C)

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

Relative Humidity (%)

29
31
34
41
50
55
55
55
59
62
65
70
72
72
62
51
41
32
26
22
20
18
17
17

Pressure (mb)

1025
1025
1026
1026
1026
1026
1026
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024

Ozone (du)

313
313
313
313
313
313
313
313
313
314
313
313
313
313
312
312
310
309
307
306
305
305
304
304

Wednesday 12

New Moon 1%

07:05

21:12

18 OK
19 OK
20 OK
21 OK
22 OK
23 Good
00 Good
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 OK
14 OK
15 OK
16 OK
17 OK

Sun - Rise: 06:23, Set: 21:12, Transit: 13:46. Moon - Rise: 07:05, Set: 21:12. Civil Dark: 21:51 - 05:44. Nautical Dark: 22:41 - 04:54. Astro Dark: 23:44 - 03:53

Total Clouds (% Sky Obscured)

48
38
33
28
22
15
6
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
0
2

Low 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
0
0

Medium Clouds (% Sky Obscured)

0
0
3
7
10
5
3
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0

High Clouds (% Sky Obscured)

48
38
33
18
4
3
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1

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 (%)

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 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)

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

Chance of Frost

Temperature (°C)

30
29
28
25
22
21
20
20
19
18
18
17
17
17
18
21
25
27
30
32
33
34
35
35

Feels Like (°C)

28
28
27
23
21
20
19
18
18
17
17
16
16
16
18
20
23
25
28
30
32
33
33
33

Dew Point (°C)

2
2
4
7
8
7
5
4
4
4
4
5
5
5
4
3
3
3
2
2
2
2
2
2

Relative Humidity (%)

16
17
21
31
39
41
36
34
37
38
41
44
45
44
38
29
24
20
17
15
13
12
12
12

Pressure (mb)

1023
1023
1023
1023
1023
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1021
1021
1020
1020
1019

Ozone (du)

304
304
304
304
304
305
306
306
306
306
305
305
305
305
304
304
304
303
303
304
304
304
304
304

Thursday 13

Waxing Crescent 4%

08:32

21:27

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

Sun - Rise: 06:24, Set: 21:10, Transit: 13:46. Moon - Rise: 08:32, Set: 21:27. Civil Dark: 21:48 - 05:46. Nautical Dark: 22:38 - 04:57. Astro Dark: 23:40 - 03:56

Total Clouds (% Sky Obscured)

0
0
0
0
0
1
1
2
12
22
32
42
53
65
47
48
44
44
45
45
44
47
45
40

Low 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
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
1
2
12
17
25
25
25
24
12
12
12
10
11
10
17
21
24
15

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
18
40
65
35
37
34
32
33
34
44
47
45
40

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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
1
6

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)

8
7
7
7
6
6
6
6
6
6
6
5
5
5
4
6
7
8
7
7
7
5
3
5

Chance of Frost

Temperature (°C)

35
34
33
29
26
24
23
23
22
22
21
21
20
20
22
25
28
30
32
33
35
34
35
35

Feels Like (°C)

33
32
31
27
24
23
22
22
20
20
20
20
20
20
22
22
23
24
25
25
26
34
34
33

Dew Point (°C)

2
2
4
7
7
7
6
5
5
6
6
7
7
7
6
5
4
3
2
1
1
0
-0
-0

Relative Humidity (%)

12
13
16
24
31
34
32
31
32
35
38
40
42
41
35
27
22
17
15
13
11
11
10
10

Pressure (mb)

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

Ozone (du)

304
304
304
303
303
302
302
302
302
302
302
302
302
302
302
302
302
302
302
302
302
302
302
303

Friday 14

Waxing Crescent 10%

09:54

21:39

18 Bad
19 Bad
20 Bad
21 OK
22 OK
23 OK
00 OK
01 OK
02 OK
03 OK
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

Sun - Rise: 06:26, Set: 21:08, Transit: 13:46. Moon - Rise: 09:54, Set: 21:39. Civil Dark: 21:46 - 05:48. Nautical Dark: 22:36 - 04:59. Astro Dark: 23:36 - 03:59

Total Clouds (% Sky Obscured)

39
39
44
40
45
41
32
23
32
38
47
62
76
86
88
90
92
93
94
95
96
96
96
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
2
6
9
12
19
23
25
28
30
36
33
27
29
31
32
35
37
37
33

Medium Clouds (% Sky Obscured)

8
2
3
5
7
10
12
13
17
22
26
28
30
31
42
57
70
72
73
74
73
72
70
76

High Clouds (% Sky Obscured)

39
39
44
40
45
40
22
0
0
1
0
1
2
3
10
9
12
24
33
46
43
46
43
62

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 (%)

8
2
6
5
1
0
0
0
1
3
3
9
14
13
21
16
9
25
32
18
25
25
20
13

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)

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

Chance of Frost

Temperature (°C)

33
32
31
29
28
26
25
24
23
22
22
21
21
21
22
24
26
28
28
29
29
28
29
28

Feels Like (°C)

34
34
35
31
30
29
29
27
27
22
22
21
21
19
19
20
20
21
21
22
23
26
26
25

Dew Point (°C)

0
1
2
2
2
2
2
2
2
1
2
2
2
1
1
1
-1
-1
-1
1
1
1
1
-1

Relative Humidity (%)

12
13
15
17
18
20
21
22
23
24
27
28
27
26
25
21
17
14
15
16
16
16
16
15

Pressure (mb)

1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012

Ozone (du)

302
302
302
302
301
301
301
300
300
299
299
298
298
298
298
298
299
299
299
299
298
299
299
300

Saturday 15

Waxing Crescent 18%

11:14

21:50

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
12 Bad
13 Bad

Sun - Rise: 06:28, Set: 21:06, Transit: 13:46. Moon - Rise: 11:14, Set: 21:50. Civil Dark: 21:44 - 05:50. Nautical Dark: 22:33 - 05:01. Astro Dark: 23:33 - 04:02

Total Clouds (% Sky Obscured)

99
100
100
100
100
97
94
91
94
97
100
97
95
92
80
69
58
56
54
54

Low Clouds (% Sky Obscured)

29
25
26
27
31
29
26
24
23
22
22
23
23
23
28
34
39
38
38
38

Medium Clouds (% Sky Obscured)

84
92
93
92
92
89
84
79
78
74
73
67
55
52
36
22
5
4
3
2

High Clouds (% Sky Obscured)

82
100
99
98
98
86
71
58
69
84
100
94
89
87
66
46
25
24
20
17

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
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

Precipitation Type

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

Precipitation Probability (%)

8
0
3
3
1
7
8
10
32
40
49
46
38
26
22
15
0
4
3
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

26
24
22
21
20
19
19
18
17
17
17
17
17
17
17
18
20
21
21
22

Feels Like (°C)

28
29
31
18
19
19
19
19
19
16
17
18
18
17
17
18
18
19
18
19

Dew Point (°C)

4
7
11
10
10
11
11
12
12
13
14
15
15
15
15
14
13
12
11
10

Relative Humidity (%)

23
34
50
51
54
56
60
65
70
76
83
90
90
87
88
76
65
56
50
45

Pressure (mb)

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

Ozone (du)

301
302
302
303
304
305
306
307
308
309
310
311
312
314
316
316
317
317
317
317

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

Generated: 09/08/26 18:52:02. Forecast: 09/08/26 to 15/08/26. Timezone: UTC+2.00