Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 29

Waning Gibbous 96%

20:46

09:28

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: 06:48, Set: 20:33, Transit: 13:40. Moon - Rise: 20:46, Set: 09:28. Civil Dark: 21:09 - 06:13. Nautical Dark: 21:53 - 05:29. Astro Dark: 22:42 - 04:40

Total Clouds (% Sky Obscured)

71
83
88
91
99
99
100
95
82
81
76
84
97
94
93
97
97
87
93
94
84
88
94
90

Low Clouds (% Sky Obscured)

35
46
56
29
80
70
100
76
71
54
53
53
84
93
89
78
86
79
89
86
79
81
82
75

Medium Clouds (% Sky Obscured)

33
32
88
91
98
98
38
86
13
81
76
67
59
41
25
42
46
32
26
34
34
21
14
7

High Clouds (% Sky Obscured)

70
83
88
91
40
38
0
0
18
29
33
26
34
23
3
0
2
2
1
3
2
2
34
31

ISS Passover

Visibility (miles)

9
9
5
7
6
9
9
9
7
9
3
4
9
9
9
9
9
7
8
7
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
Light Rain
None
None
None
None
Very Light Rain
None
Very Light Rain
None
Very Light Rain
None
None

Precipitation Probability (%)

6
25
84
43
34
52
35
47
31
38
67
61
88
44
34
36
40
47
43
53
42
44
32
32

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.8
0
0
0
0
0.2
0
0.3
0
0.2
0
0

Wind Speed/Direction (mph)

16
16
17
16
15
14
13
13
13
14
14
15
16
19
21
20
19
17
15
14
13
14
14
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
15
18
18
18
18
17
17
17
16
16
16
17
17
17
17
17
17
17
17
17
17
17

Relative Humidity (%)

56
54
61
77
84
89
91
91
93
93
92
93
90
89
89
89
92
92
93
93
90
89
89
85

Pressure (mb)

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

Ozone (du)

306
304
303
302
303
306
307
308
308
310
308
307
308
309
304
306
305
305
304
305
306
306
306
307

Sunday 30

Waning Gibbous 91%

20:57

10:49

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: 06:50, Set: 20:31, Transit: 13:40. Moon - Rise: 20:57, Set: 10:49. Civil Dark: 21:06 - 06:15. Nautical Dark: 21:50 - 05:31. Astro Dark: 22:39 - 04:42

Total Clouds (% Sky Obscured)

91
95
100
96
98
100
100
100
100
100
100
91
86
75
100
100
99
100
100
100
97
90
97
70

Low Clouds (% Sky Obscured)

81
62
48
41
39
50
28
32
19
33
70
35
35
28
60
41
84
87
59
81
79
70
83
42

Medium Clouds (% Sky Obscured)

10
6
71
19
9
20
24
50
54
33
98
60
32
24
94
100
70
3
11
10
19
20
17
12

High Clouds (% Sky Obscured)

40
80
100
88
95
100
100
100
100
35
1
76
80
75
100
100
84
88
100
86
81
2
41
37

ISS Passover

Visibility (miles)

8
6
9
9
9
7
8
5
9
9
7
4
9
9
9
8
7
6
9
9
8
8
5
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
Light Rain
Light Rain
None
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

34
25
18
9
9
26
39
32
10
37
95
66
26
74
95
95
80
43
38
41
51
65
56
55

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
1.3
0.4
0
0.4
1.1
1
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
15
14
14
12
10
7
4
4
5
7
6
7
9
9
12
13
14
14
16
18
19
19

Chance of Frost

Temperature (°C)

20
20
21
22
22
22
21
21
20
19
18
17
17
17
17
16
16
16
16
16
16
16
17
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
80
76
64
58
60
69
84
85
85
90
93
93
93
95
95
93
96
93
95
90
89
86
85

Pressure (mb)

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

Ozone (du)

307
307
306
305
305
306
306
307
309
312
313
315
319
325
326
324
324
325
331
330
330
329
330
332

Monday 31

Waning Gibbous 83%

21:10

No Set

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: 06:52, Set: 20:29, Transit: 13:39. Moon - Rise: 21:10, Set: No Set. Civil Dark: 21:04 - 06:16. Nautical Dark: 21:48 - 05:33. Astro Dark: 22:36 - 04:45

Total Clouds (% Sky Obscured)

100
93
96
87
80
55
29
25
38
76
83
80
93
75
100
100
100
100
100
98
97
96
80
91

Low Clouds (% Sky Obscured)

85
80
82
83
77
31
27
23
37
56
64
57
63
56
47
47
42
35
27
26
27
30
30
30

Medium Clouds (% Sky Obscured)

7
4
9
17
14
17
1
0
0
2
13
7
85
49
46
0
35
60
97
69
88
89
60
37

High Clouds (% Sky Obscured)

60
75
76
1
1
2
0
0
0
20
25
25
63
48
100
100
100
94
98
76
55
20
8
31

ISS Passover

Visibility (miles)

9
9
7
7
6
7
8
8
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

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

Precipitation Probability (%)

58
57
95
87
57
48
52
29
23
34
44
35
23
7
3
3
0
0
0
0
0
0
0
1

Precipitation Amount (mm)

0.2
0
1.3
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

19
19
18
17
17
16
16
15
13
10
9
10
9
8
8
8
8
8
8
8
8
9
11
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
82
77
75
81
84
81
85
85
87
89
85
85
83
82
80
76
78
79
79
80
74
63
57

Pressure (mb)

1009
1009
1010
1011
1011
1011
1012
1012
1013
1014
1015
1015
1016
1016
1016
1016
1016
1016
1017
1017
1018
1018
1019
1019

Ozone (du)

332
333
332
333
333
332
328
320
316
316
314
313
313
312
311
312
313
314
313
312
311
311
311
311

Tuesday 1

Waning Gibbous 74%

21:26

12:13

12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 OK
18 Good
19 Good
20 OK
21 OK
22 OK
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: 06:53, Set: 20:26, Transit: 13:39. Moon - Rise: 21:26, Set: 12:13. Civil Dark: 21:02 - 06:18. Nautical Dark: 21:45 - 05:35. Astro Dark: 22:33 - 04:47

Total Clouds (% Sky Obscured)

87
82
79
73
30
18
10
16
43
42
46
61
82
100
100
100
66
64
66
100
94
97
97
98

Low Clouds (% Sky Obscured)

30
28
26
21
17
12
6
0
0
0
0
4
8
11
13
15
19
23
26
30
30
44
57
77

Medium Clouds (% Sky Obscured)

25
17
15
12
11
9
6
2
3
5
9
16
81
84
87
94
41
35
32
32
42
58
79
89

High Clouds (% Sky Obscured)

44
52
55
55
5
0
0
16
40
40
40
60
78
100
100
100
55
60
66
100
74
47
40
57

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
1
1
0
0
0
0
0
1
1
3
4
3
5
8
9
21
28
32
35

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)

13
14
14
13
12
11
9
7
5
4
4
5
6
6
7
7
8
8
8
8
9
10
11
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
50
49
49
49
48
48
56
64
68
67
67
67
68
69
73
75
83
89
93
92
80
74
73

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1019
1019
1019
1019
1018
1018
1018
1018
1018
1019
1019
1019

Ozone (du)

311
312
313
314
315
316
314
312
311
310
308
309
312
315
316
318
320
320
319
318
318
316
316
317

Wednesday 2

Waning Gibbous 63%

21:48

13:40

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: 06:55, Set: 20:24, Transit: 13:39. Moon - Rise: 21:48, Set: 13:40. Civil Dark: 20:59 - 06:20. Nautical Dark: 21:42 - 05:37. Astro Dark: 22:30 - 04:50

Total Clouds (% Sky Obscured)

99
100
100
100
100
100
100
100
100
96
100
100
100
100
100
100
100
100
99
99
99
100
100
96

Low Clouds (% Sky Obscured)

29
61
66
61
44
52
52
55
69
80
98
87
64
37
33
30
28
39
49
60
61
61
62
58

Medium Clouds (% Sky Obscured)

89
92
99
99
99
99
83
40
28
23
46
65
89
85
85
87
84
88
89
91
88
86
81
86

High Clouds (% Sky Obscured)

80
100
69
84
100
96
100
100
100
92
95
99
95
100
100
100
100
99
94
87
87
93
100
96

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
8
6
5

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

Precipitation Probability (%)

28
11
8
24
29
22
31
40
48
55
57
47
34
14
27
26
15
28
33
35
36
36
40
41

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
13
14
14
12
12
11
11
10
10
10
12
13
13
14
15
15
15
15
16
16
17
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
11
10
12
14
14
15
14
13
13
13
12
13
13
14
15
15
15
16
16
16
16
17
17

Relative Humidity (%)

72
56
52
58
72
73
78
74
74
77
76
71
73
76
79
81
82
83
85
88
90
89
89
89

Pressure (mb)

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

Ozone (du)

319
320
319
316
313
308
304
302
300
297
295
295
294
294
294
294
293
293
293
293
293
293
294
294

Thursday 3

Waning Gibbous 51%

22:19

15:07

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

Sun - Rise: 06:56, Set: 20:22, Transit: 13:38. Moon - Rise: 22:19, Set: 15:07. Civil Dark: 20:57 - 06:22. Nautical Dark: 21:40 - 05:39. Astro Dark: 22:27 - 04:52

Total Clouds (% Sky Obscured)

94
90
79
68
57
52
46
41
36
31
28
28
27
27
31
36
42
47
57
66
60
51
39
36

Low Clouds (% Sky Obscured)

55
52
44
38
31
22
13
3
2
1
0
4
8
12
7
4
0
4
9
23
30
35
39
36

Medium Clouds (% Sky Obscured)

89
90
65
35
3
3
3
0
0
2
2
4
5
6
12
15
18
23
25
26
22
18
14
14

High Clouds (% Sky Obscured)

92
88
76
64
52
46
40
35
24
13
2
1
1
0
10
22
31
28
26
29
20
11
0
0

ISS Passover

Visibility (miles)

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

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 (%)

43
47
49
50
50
45
41
37
35
33
30
23
20
11
9
10
7
12
13
13
25
32
36
35

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
19
19
19
19
20
17
14
11
10
9
8
9
9
10
10
10
10
11
11
11
13
15
17

Chance of Frost

Temperature (°C)

19
19
20
20
21
21
20
20
19
18
17
16
16
16
16
16
16
16
16
16
16
17
18
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
85
84
79
74
70
75
80
85
86
89
92
92
92
92
89
85
80
79
77
75
72
68
65

Pressure (mb)

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

Ozone (du)

296
297
299
300
301
301
304
307
310
312
315
317
319
321
323
324
326
327
331
336
341
342
343
344

Friday 4

Third Quarter 39%

23:06

16:28

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

Sun - Rise: 06:58, Set: 20:19, Transit: 13:38. Moon - Rise: 23:06, Set: 16:28. Civil Dark: 20:54 - 06:23. Nautical Dark: 21:37 - 05:41. Astro Dark: 22:24 - 04:54

Total Clouds (% Sky Obscured)

35
34
43
56
69
61
49
38
48
61
67
69
69
73
82
91
100
100
100
100

Low Clouds (% Sky Obscured)

33
20
28
43
58
42
29
14
30
53
61
69
69
73
81
86
94
89
85
81

Medium Clouds (% Sky Obscured)

15
17
25
32
45
45
46
38
48
53
57
52
51
37
43
39
40
39
39
38

High Clouds (% Sky Obscured)

1
1
0
0
0
0
3
5
10
9
5
14
23
33
52
59
63
73
86
93

ISS Passover

Visibility (miles)

8
8
8
8
8
8
8
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

Precipitation Type

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

Precipitation Probability (%)

30
27
36
41
48
63
80
95
94
95
70
60
51
35
83
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.3
0.4
0.6
0.7
0.3
0
0
0
0.6
1.5
2.1
3.2
3.9
7.9

Wind Speed/Direction (mph)

18
19
20
19
18
18
16
16
16
16
16
14
13
13
13
13
12
11
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
56
53
56
59
62
62
61
61
63
67
69
67
66
64
64
64
65
62
59

Pressure (mb)

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

Ozone (du)

345
345
345
347
348
349
346
342
338
334
331
328
325
322
320
318
315
313
311
309

Forecast for Utrecht, Gemeente Utrecht, Netherlands (52.09,5.12)

Generated: 29/08/26 12:57:23. Forecast: 29/08/26 to 04/09/26. Timezone: UTC+2.00