Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 28

Waning Gibbous 93%

19:35

No Set

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
10 Bad

Sun - Rise: 07:40, Set: 19:26, Transit: 13:32. Moon - Rise: 19:35, Set: No Set. Civil Dark: 19:59 - 07:06. Nautical Dark: 20:39 - 06:27. Astro Dark: 21:20 - 05:46

Total Clouds (% Sky Obscured)

97
100
99
100
100
98
96
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

34
59
44
63
87
86
88
65
40
91
92
90
87
88
85
87
80
74
48
47
40
35
25
18

Medium Clouds (% Sky Obscured)

87
94
61
94
98
90
85
67
76
96
96
92
89
89
92
85
86
89
68
71
93
80
76
81

High Clouds (% Sky Obscured)

90
52
61
88
100
80
72
100
100
100
100
87
100
100
100
97
100
100
100
100
100
100
100
94

ISS Passover

Visibility (miles)

9
9
9
9
9
8
4
9
9
9
9
8
6
7
4
4
7
7
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
Very Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
None
Very Light Rain
Light Rain
None
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

29
25
14
4
28
54
53
11
10
22
54
68
59
64
75
55
56
25
20
33
4
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.3
0.3
0
0
0
0
0.3
0
0.3
0.5
0
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
20
20
20
20
19
19
18
18
18
17
17
17
16
16
16
16
16
16
16
16
16
17
18

Feels Like (°C)

20
20
20
20
20
19
18
18
18
17
17
17
16
15
16
16
15
16
16
16
16
16
17
18

Dew Point (°C)

16
15
13
13
13
15
16
17
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16

Relative Humidity (%)

82
74
66
64
65
76
85
90
89
90
92
92
95
95
96
96
96
98
96
98
98
96
95
90

Pressure (mb)

1019
1020
1020
1020
1020
1021
1020
1021
1021
1021
1022
1022
1022
1021
1021
1021
1020
1020
1020
1019
1019
1019
1019
1019

Ozone (du)

285
286
286
288
288
288
289
291
290
291
291
291
293
294
295
297
297
298
299
299
300
302
304
303

Tuesday 29

Waning Gibbous 86%

19:55

11:26

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

Sun - Rise: 07:42, Set: 19:23, Transit: 13:32. Moon - Rise: 19:55, Set: 11:26. Civil Dark: 19:57 - 07:08. Nautical Dark: 20:36 - 06:29. Astro Dark: 21:17 - 05:48

Total Clouds (% Sky Obscured)

100
63
67
28
8
25
52
4
4
6
47
43
94
71
79
75
87
57
45
94
83
95
81
100

Low Clouds (% Sky Obscured)

9
0
5
0
0
0
0
0
0
0
0
0
0
51
55
55
9
0
0
4
0
0
0
0

Medium Clouds (% Sky Obscured)

60
56
14
23
6
6
41
4
2
2
21
40
45
45
67
63
85
48
37
82
80
87
37
38

High Clouds (% Sky Obscured)

98
16
47
1
0
25
11
0
1
2
31
43
89
59
61
60
48
12
14
83
24
69
64
100

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
1
1
13
0
0
2

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

Chance of Frost

Temperature (°C)

19
21
23
24
25
26
26
25
23
22
21
20
20
19
19
19
19
19
18
18
18
18
19
20

Feels Like (°C)

19
21
24
24
24
25
25
26
24
22
21
18
18
17
17
17
17
17
17
16
16
17
17
19

Dew Point (°C)

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

Relative Humidity (%)

81
74
58
47
42
45
45
50
57
60
60
51
48
51
49
49
51
55
56
57
61
66
63
60

Pressure (mb)

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

Ozone (du)

301
299
297
296
295
295
294
292
291
289
287
286
285
285
284
283
282
280
279
278
277
276
275
275

Wednesday 30

Waning Gibbous 77%

20:24

12:55

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
10 Bad

Sun - Rise: 07:43, Set: 19:21, Transit: 13:31. Moon - Rise: 20:24, Set: 12:55. Civil Dark: 19:55 - 07:10. Nautical Dark: 20:34 - 06:30. Astro Dark: 21:15 - 05:50

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
57
36
37
48
82
85
87
93
93
96
96
57
83
81
85
89
90
84
58
89
76

Medium Clouds (% Sky Obscured)

91
67
59
91
95
96
98
100
100
100
100
100
98
100
100
97
85
72
61
67
82
88
94
100

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
93
89

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
5
2
3
5
3
9
9
9
9
8
8
5
8
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
Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None
Very Light Rain
None
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

1
3
17
23
46
75
75
95
95
95
95
95
87
66
70
50
74
76
71
39
15
12
18
20

Precipitation Amount (mm)

0
0
0
0
0
0.6
0.3
1.1
2.1
1.5
1.5
1.2
0.6
0.2
0.3
0
0.2
0.4
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
20
21
21
21
21
19
20
19
19
19
19
19
20
20
20
18
17
17
18
17
17
17
18

Dew Point (°C)

12
12
11
12
11
11
14
17
18
18
18
18
18
18
18
18
16
16
15
15
15
15
15
15

Relative Humidity (%)

55
50
47
49
49
52
65
86
93
95
95
96
95
96
96
96
92
92
89
88
86
86
85
85

Pressure (mb)

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

Ozone (du)

275
275
274
274
274
274
273
273
273
274
274
274
275
274
274
275
274
274
274
275
277
278
279
280

Thursday 1

Waning Gibbous 66%

21:06

14:20

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

Sun - Rise: 07:45, Set: 19:19, Transit: 13:31. Moon - Rise: 21:06, Set: 14:20. Civil Dark: 19:52 - 07:11. Nautical Dark: 20:32 - 06:32. Astro Dark: 21:12 - 05:52

Total Clouds (% Sky Obscured)

100
100
100
92
84
76
70
30
24
25
50
53
56
56
30
62
81
99
99
100
95
79
76
72

Low Clouds (% Sky Obscured)

87
86
84
84
84
76
70
22
18
16
15
14
14
13
13
14
16
21
22
20
21
14
6
0

Medium Clouds (% Sky Obscured)

100
85
72
83
70
28
3
0
0
0
1
0
0
0
0
25
53
73
62
30
30
23
14
0

High Clouds (% Sky Obscured)

93
97
40
23
12
0
0
0
0
1
49
53
56
56
13
56
74
94
95
97
91
73
70
71

ISS Passover

Visibility (miles)

9
9
9
9
5
9
9
9
8
7
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

42
26
31
47
60
36
32
32
22
19
7
12
4
0
0
0
0
0
3
2
2
1
1
0

Precipitation Amount (mm)

0
0
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
88
89
90
90
81
82
86
90
92
92
92
92
90
92
92
93
92
92
93
92
89
82

Pressure (mb)

1022
1022
1023
1023
1024
1024
1025
1025
1026
1027
1027
1028
1028
1028
1029
1029
1029
1029
1029
1030
1030
1030
1031
1031

Ozone (du)

281
284
290
292
297
300
293
291
291
291
292
291
290
289
288
288
288
288
289
290
293
296
297
295

Friday 2

Waning Gibbous 54%

22:06

15:30

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

Sun - Rise: 07:47, Set: 19:16, Transit: 13:31. Moon - Rise: 22:06, Set: 15:30. Civil Dark: 19:50 - 07:13. Nautical Dark: 20:29 - 06:34. Astro Dark: 21:10 - 05:54

Total Clouds (% Sky Obscured)

66
62
62
62
65
65
60
56
50
44
39
67
60
25
44
45
51
60
65
60
52
62
72
83

Low Clouds (% Sky Obscured)

5
10
17
16
15
15
10
5
0
0
0
0
0
0
0
1
1
2
4
4
6
6
4
4

Medium Clouds (% Sky Obscured)

1
2
3
16
29
37
36
35
34
29
23
18
12
6
0
0
0
0
0
0
1
1
0
0

High Clouds (% Sky Obscured)

66
62
62
62
63
60
40
21
2
2
3
50
60
20
44
45
51
56
48
40
25
45
65
82

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 (%)

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

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)

4
4
4
4
4
3
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
64
57
53
50
49
50
57
66
73
76
79
79
80
81
81
81
83
83
84
83
84
79
73

Pressure (mb)

1031
1031
1031
1031
1031
1030
1030
1030
1030
1030
1031
1031
1031
1031
1031
1030
1030
1030
1030
1030
1030
1030
1030
1031

Ozone (du)

292
291
290
290
290
290
289
289
289
290
292
292
293
294
294
293
293
293
293
293
293
293
293
293

Saturday 3

Third Quarter 42%

23:23

16:22

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
10 Bad

Sun - Rise: 07:48, Set: 19:14, Transit: 13:30. Moon - Rise: 23:23, Set: 16:22. Civil Dark: 19:48 - 07:15. Nautical Dark: 20:27 - 06:35. Astro Dark: 21:07 - 05:55

Total Clouds (% Sky Obscured)

81
78
74
73
73
73
63
56
49
58
67
74
70
60
50
56
57
60
60
61
57
48
59
60

Low Clouds (% Sky Obscured)

7
11
15
17
20
21
20
18
16
15
14
12
15
18
20
22
24
26
26
25
25
28
22
20

Medium Clouds (% Sky Obscured)

4
9
15
9
4
0
9
15
23
20
11
12
30
42
50
36
29
25
32
33
29
21
15
11

High Clouds (% Sky Obscured)

74
67
61
64
67
70
54
37
18
31
39
48
51
54
50
42
33
35
46
46
52
48
59
60

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 (%)

5
2
2
3
2
0
1
1
0
2
1
1
1
1
2
5
5
4
15
10
8
16
18
19

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
15
16
21
21
20
20
20
21
15
15
16
15
16
15
14
13
13
14
15
15
14
15

Dew Point (°C)

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

Relative Humidity (%)

67
62
58
54
54
54
53
60
68
79
79
80
83
83
84
84
86
87
87
87
87
86
79
72

Pressure (mb)

1031
1031
1030
1030
1030
1030
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1029

Ozone (du)

293
293
294
295
295
295
295
295
295
295
296
297
299
303
307
311
308
305
302
302
302
301
301
301

Sunday 4

Waning Crescent 31%

00:49

16:58

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 OK
01 Good
02 OK
03 OK
04 OK
05 Bad
06 Bad
07 Bad

Sun - Rise: 07:50, Set: 19:12, Transit: 13:30. Moon - Rise: 00:49, Set: 16:58. Civil Dark: 19:45 - 07:16. Nautical Dark: 20:25 - 06:37. Astro Dark: 21:05 - 05:57

Total Clouds (% Sky Obscured)

59
69
83
89
94
100
100
100
100
84
68
52
45
33
15
17
29
35
42
57
73

Low Clouds (% Sky Obscured)

21
21
17
18
19
23
23
30
29
29
25
18
18
19
15
16
18
16
15
13
15

Medium Clouds (% Sky Obscured)

6
3
0
6
15
26
26
23
23
23
20
20
17
15
10
9
4
2
0
0
3

High Clouds (% Sky Obscured)

59
67
80
87
92
100
100
100
100
84
68
52
45
33
15
12
14
16
33
47
67

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

Fog (%)

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

Precipitation Probability (%)

19
15
10
10
8
8
10
8
5
5
6
4
8
10
2
3
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

Wind Speed/Direction (mph)

6
6
6
6
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

17
18
19
19
19
19
19
18
17
17
16
15
15
15
15
14
14
14
14
14
14

Feels Like (°C)

15
15
16
16
19
19
18
19
19
21
15
15
15
16
16
15
15
16
15
16
15

Dew Point (°C)

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

Relative Humidity (%)

66
63
59
56
57
57
58
64
72
81
82
85
84
86
87
89
89
89
89
90
89

Pressure (mb)

1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027

Ozone (du)

301
301
300
299
298
297
297
295
294
293
293
294
294
293
292
292
289
287
285
284
283

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

Generated: 28/09/26 11:11:16. Forecast: 28/09/26 to 04/10/26. Timezone: UTC+2.00