Clear Outside v1.0 - International Weather Forecasts For Astronomers

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)

97
89
97
100
100
100
100
100
100
98
89
95
100
78
100
100
100
84
66
83
94
75
98
99

Low Clouds (% Sky Obscured)

56
73
62
40
39
30
49
37
20
13
30
29
48
21
50
37
42
67
45
67
85
74
78
84

Medium Clouds (% Sky Obscured)

18
20
13
22
51
37
100
100
100
62
46
80
84
55
100
50
3
31
3
12
20
3
13
8

High Clouds (% Sky Obscured)

5
59
97
99
100
100
100
100
100
50
32
65
70
70
99
100
100
48
48
45
50
6
52
69

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

33
9
3
9
3
9
12
22
28
29
30
22
55
85
31
51
50
30
39
38
55
61
73
88

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.9
0
0
0
0
0
0
0
0.2
0.4
0.5

Wind Speed/Direction (mph)

16
17
17
16
14
12
10
6
5
6
7
7
9
9
9
10
11
12
13
14
15
16
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
82
77
64
60
58
62
75
82
88
89
92
92
90
93
92
93
95
95
96
95
92
89
86

Pressure (mb)

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

Ozone (du)

309
308
307
306
305
305
307
309
311
314
316
317
321
327
329
328
327
327
328
331
332
333
335
336

Monday 31

Waning Gibbous 83%

21:10

No Set

12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 Good
21 OK
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)

81
96
79
82
62
56
25
17
0
17
53
44
91
100
100
96
98
98
95
98
91
94
68
52

Low Clouds (% Sky Obscured)

55
72
69
66
46
43
25
17
0
16
22
41
21
24
26
41
28
25
20
14
16
21
21
23

Medium Clouds (% Sky Obscured)

11
16
13
12
9
0
2
0
0
0
2
0
2
13
90
95
91
76
94
84
24
94
51
11

High Clouds (% Sky Obscured)

62
67
2
6
45
13
0
0
0
0
25
7
91
100
100
50
76
92
61
85
81
14
2
2

ISS Passover

Visibility (miles)

5
4
5
4
7
8
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
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
81
61
47
33
24
3
8
15
16
11
14
10
2
1
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

2
0.6
0.4
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)

18
20
20
19
18
17
16
13
11
9
8
8
8
8
8
7
7
7
7
7
7
8
11
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
79
81
86
85
78
77
80
79
86
89
89
89
92
89
87
85
83
82
84
80
73
64
58

Pressure (mb)

1009
1009
1010
1011
1011
1011
1012
1012
1013
1014
1015
1016
1016
1016
1017
1017
1017
1017
1017
1018
1018
1019
1020
1020

Ozone (du)

337
337
337
334
332
331
330
326
324
322
321
320
321
320
318
317
318
318
318
318
316
316
316
315

Tuesday 1

Waning Gibbous 74%

21:26

12:13

12 Bad
13 Bad
14 Bad
15 Bad
16 OK
17 Bad
18 Bad
19 OK
20 Good
21 Good
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)

57
72
68
81
30
51
63
19
17
11
33
100
100
100
100
95
81
87
87
72
93
97
100
100

Low Clouds (% Sky Obscured)

24
17
15
45
6
19
0
0
0
0
0
14
13
22
24
31
35
42
33
36
31
30
26
29

Medium Clouds (% Sky Obscured)

23
13
10
5
4
4
6
19
17
11
4
75
59
40
28
66
38
42
42
32
29
24
20
42

High Clouds (% Sky Obscured)

2
16
25
25
20
17
55
8
1
1
33
98
100
100
100
86
70
81
73
36
70
86
99
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
1
0
0
0
0
1
2
1
1
6
1
3
3
5
7
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

18
19
18
18
17
18
18
18
17
15
15
13
13
13
13
13
13
15
14
14
15
15
17
18

Dew Point (°C)

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

Relative Humidity (%)

53
51
49
50
50
51
56
61
70
75
78
79
78
75
75
78
82
86
90
95
92
83
73
63

Pressure (mb)

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

Ozone (du)

314
313
314
315
315
316
318
321
321
317
316
317
318
322
324
326
324
320
318
315
311
308
305
303

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)

100
100
100
100
65
88
100
100
100
100
99
98
69
67
95
92
94
97
97
97
97
98
98
96

Low Clouds (% Sky Obscured)

31
41
44
29
27
42
43
2
0
0
0
8
14
20
36
57
85
90
85
77
80
78
77
72

Medium Clouds (% Sky Obscured)

89
99
73
33
28
40
26
49
29
34
26
29
22
21
24
26
26
23
31
89
88
86
16
48

High Clouds (% Sky Obscured)

100
100
100
100
47
52
94
100
99
98
97
91
54
50
73
60
51
71
74
83
88
91
58
76

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
6
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
Very Light Rain

Precipitation Probability (%)

19
15
13
14
14
10
6
0
2
3
2
4
2
1
4
7
8
10
20
8
37
35
31
52

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
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
11
11
9
9
10
12
12
12
12
13
12
13
13
14
15
15
15
16
16
16
17
18
18

Relative Humidity (%)

59
55
51
47
47
51
58
63
64
66
71
71
74
78
82
86
87
88
89
88
88
89
91
89

Pressure (mb)

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

Ozone (du)

301
300
300
299
298
296
297
298
298
299
298
297
298
295
294
293
292
291
291
291
291
292
293
292

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 Bad
02 Bad
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)

95
92
94
93
100
90
98
91
80
87
88
100
100
81
83
90
99
99
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

75
52
79
83
60
63
71
73
72
72
73
67
56
53
60
70
82
85
89
92
91
90
89
83

Medium Clouds (% Sky Obscured)

92
27
36
26
37
70
93
49
30
28
31
24
17
7
14
17
16
42
57
74
83
92
100
76

High Clouds (% Sky Obscured)

24
36
22
33
43
11
6
5
1
4
6
40
72
81
83
82
86
97
97
100
100
100
100
100

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

41
39
43
49
54
49
51
50
57
64
67
58
45
25
45
40
37
51
59
59
66
72
77
73

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

17
17
18
15
13
12
12
12
13
13
13
14
14
14
14
14
13
13
12
12
11
12
13
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
86
74
74
70
70
71
76
80
81
80
81
82
84
86
85
86
88
91
92
95
95
93
93

Pressure (mb)

1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1013
1013
1013
1013
1013
1013
1013
1012
1012

Ozone (du)

292
291
292
291
290
291
292
292
291
290
289
290
289
289
290
290
290
290
293
295
298
300
303
305

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
08 Bad
09 Bad
10 Bad
11 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)

100
99
89
78
68
58
59
61
67
73
81
82
84
85
71
59
47
45
48
50
60
66
65
71

Low Clouds (% Sky Obscured)

80
72
57
46
32
33
33
32
40
48
56
57
60
63
49
35
23
26
28
46
38
26
15
34

Medium Clouds (% Sky Obscured)

51
27
19
8
3
3
4
0
0
3
3
7
13
19
24
19
14
15
14
13
20
28
35
33

High Clouds (% Sky Obscured)

100
99
78
57
35
29
23
17
25
34
42
33
26
32
30
28
21
33
36
40
40
35
30
31

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

68
58
49
39
32
45
52
64
70
70
67
64
49
37
34
29
24
21
20
17
21
24
25
34

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

81
72
64
61
58
55
60
62
68
70
72
75
71
68
65
69
71
73
75
78
79
78
75
73

Pressure (mb)

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

Ozone (du)

307
309
311
313
315
316
316
316
316
317
318
319
322
324
327
330
334
337
337
336
336
334
333
331

Saturday 5

Waning Crescent 28%

00:12

17:33

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: 07:00, Set: 20:17, Transit: 13:38. Moon - Rise: 00:12, Set: 17:33. Civil Dark: 20:52 - 06:25. Nautical Dark: 21:34 - 05:43. Astro Dark: 22:21 - 04:57

Total Clouds (% Sky Obscured)

79
88
88
89
90
81
73
65
69
73
77
81
86
91
91
90
89
77
69
66

Low Clouds (% Sky Obscured)

53
75
76
74
71
62
53
44
35
30
19
23
23
29
19
9
0
1
1
2

Medium Clouds (% Sky Obscured)

32
34
32
29
30
21
12
2
13
23
33
35
40
33
35
30
28
28
29
29

High Clouds (% Sky Obscured)

43
51
55
65
74
60
41
27
36
49
66
70
73
76
54
45
40
32
18
12

ISS Passover

Visibility (miles)

8
8
8
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

Precipitation Type

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

Precipitation Probability (%)

40
45
37
29
22
23
17
5
7
1
0
0
0
0
0
0
0
1
3
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
11
11
11
12
12
11
9
7
6
5
4
3
3
3
3
3
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
76
77
69
62
55
61
66
73
75
79
82
82
81
81
84
86
87
87
86

Pressure (mb)

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

Ozone (du)

328
325
323
321
320
318
316
314
312
311
311
310
308
306
305
304
302
301
301
300

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

Generated: 30/08/26 12:54:01. Forecast: 30/08/26 to 05/09/26. Timezone: UTC+2.00