Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 23

Waxing Gibbous 83%

19:01

01:49

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

Sun - Rise: 06:38, Set: 20:46, Transit: 13:42. Moon - Rise: 19:01, Set: 01:49. Civil Dark: 21:23 - 06:02. Nautical Dark: 22:09 - 05:16. Astro Dark: 23:02 - 04:24

Total Clouds (% Sky Obscured)

98
94
96
72
94
93
81
76
58
36
13
7
0
2
0
0
0
0
7
11
11
3
0
0

Low Clouds (% Sky Obscured)

77
81
45
42
83
79
69
61
58
31
12
7
0
0
0
0
0
0
7
11
11
3
0
0

Medium Clouds (% Sky Obscured)

9
34
21
20
21
19
13
15
19
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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
3
1
2
4
5
9
2
4
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)

5
6
8
9
9
9
9
8
7
8
7
5
5
4
4
3
3
3
3
3
3
4
4
5

Chance of Frost

Temperature (°C)

16
17
18
19
20
20
20
20
20
19
18
16
15
14
13
13
12
12
11
11
11
10
11
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

65
63
59
53
49
49
54
57
55
62
72
78
82
86
87
87
89
90
88
87
87
87
80
69

Pressure (mb)

1025
1025
1025
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

358
357
355
353
351
349
348
347
346
345
345
344
344
344
343
343
344
344
345
345
345
345
344
344

Monday 24

Waxing Gibbous 90%

19:32

03:01

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

Sun - Rise: 06:40, Set: 20:44, Transit: 13:41. Moon - Rise: 19:32, Set: 03:01. Civil Dark: 21:20 - 06:04. Nautical Dark: 22:06 - 05:19. Astro Dark: 22:59 - 04:27

Total Clouds (% Sky Obscured)

16
36
36
22
20
35
41
47
35
35
35
26
2
1
0
1
2
15
48
47
93
89
78
80

Low Clouds (% Sky Obscured)

16
36
36
22
20
22
21
18
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
13
19
22
25
30
30
26
1
1
0
0
1
15
48
47
93
89
78
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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
17
18
19
20
20
20
19
19
18
17
15
14
14
14
13
13
12
11
10
10
9
10
12

Dew Point (°C)

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

Relative Humidity (%)

60
53
48
44
41
39
37
37
39
44
54
59
59
64
70
71
70
70
74
76
77
75
68
59

Pressure (mb)

1024
1023
1022
1022
1021
1021
1020
1019
1018
1017
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1014
1014
1014
1014

Ozone (du)

344
344
343
341
337
331
329
328
329
331
330
331
329
330
328
326
323
321
319
319
319
319
319
319

Tuesday 25

Waxing Gibbous 95%

19:54

04:17

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: 06:42, Set: 20:42, Transit: 13:41. Moon - Rise: 19:54, Set: 04:17. Civil Dark: 21:18 - 06:06. Nautical Dark: 22:03 - 05:21. Astro Dark: 22:55 - 04:29

Total Clouds (% Sky Obscured)

88
100
100
100
100
100
100
100
100
93
100
100
96
81
84
96
100
99
98
100
100
100
98
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
30
31
10
48
79
100
100
80
55
37
71
42
58
49
52
45
49
86
89

Medium Clouds (% Sky Obscured)

0
0
0
0
22
29
26
42
99
93
98
99
95
81
78
29
27
30
77
67
62
72
66
61

High Clouds (% Sky Obscured)

87
100
100
100
100
100
100
100
100
22
57
20
40
27
66
83
100
92
73
100
100
100
73
50

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
4
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
None
None
None
None
None
None
None
None
Very Light Rain
None
Very Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
1
6
14
22
41
22
17
26
21
12
9
12
15
45
64
53
76
95
77
76

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0.3
1
0.6
0.5

Wind Speed/Direction (mph)

13
13
13
14
14
14
13
11
11
9
7
7
4
5
6
7
7
7
7
7
7
7
6
6

Chance of Frost

Temperature (°C)

17
19
21
22
23
24
24
23
21
19
18
17
17
17
17
16
16
16
16
16
16
17
17
18

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
6
6
6
5
5
4
5
8
12
11
8
8
8
9
11
13
14
15
16
17

Relative Humidity (%)

52
45
40
36
33
31
31
31
34
38
42
54
73
67
57
58
57
64
69
81
83
89
93
95

Pressure (mb)

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

Ozone (du)

317
315
313
313
313
315
316
316
314
314
312
312
311
312
311
311
312
311
311
311
311
312
312
312

Wednesday 26

Waxing Gibbous 98%

20:11

05:35

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: 06:43, Set: 20:40, Transit: 13:41. Moon - Rise: 20:11, Set: 05:35. Civil Dark: 21:16 - 06:07. Nautical Dark: 22:01 - 05:23. Astro Dark: 22:52 - 04:32

Total Clouds (% Sky Obscured)

95
96
96
95
92
86
82
67
65
55
70
84
70
100
81
87
97
100
100
96
92
88
92
96

Low Clouds (% Sky Obscured)

92
84
90
84
83
77
74
48
31
16
11
8
4
5
6
7
9
12
14
12
9
7
12
15

Medium Clouds (% Sky Obscured)

58
41
80
84
40
23
18
12
8
0
0
0
0
0
0
0
12
23
37
27
43
88
90
57

High Clouds (% Sky Obscured)

25
30
45
38
1
0
1
33
52
48
62
81
64
99
80
87
93
94
91
76
55
43
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

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

Precipitation Probability (%)

70
59
53
51
41
44
31
30
28
24
21
14
0
0
0
0
0
0
0
8
38
11
18
61

Precipitation Amount (mm)

0.3
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
20
21
21
22
23
23
24
23
23
22
21
20
19
19
19
18
18
18
18
18
18
18
19

Feels Like (°C)

19
20
21
21
22
23
24
24
24
23
23
21
20
21
19
20
19
18
18
17
18
17
19
20

Dew Point (°C)

18
19
19
19
19
18
17
18
17
17
18
18
18
18
18
18
18
17
17
17
17
17
17
17

Relative Humidity (%)

96
95
88
89
81
73
67
69
65
68
76
85
89
92
95
95
95
95
95
93
93
95
92
88

Pressure (mb)

1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1013
1012
1012
1011
1011
1010
1010
1010
1009
1009

Ozone (du)

312
312
311
313
316
316
314
313
314
314
315
315
314
314
312
312
313
313
311
311
311
312
313
314

Thursday 27

Waxing Gibbous 100%

20:24

06:52

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: 06:45, Set: 20:38, Transit: 13:40. Moon - Rise: 20:24, Set: 06:52. Civil Dark: 21:13 - 06:09. Nautical Dark: 21:58 - 05:25. Astro Dark: 22:49 - 04:35

Total Clouds (% Sky Obscured)

100
100
100
100
90
79
69
75
75
84
95
98
100
100
100
100
100
100
100
100
100
100
94
87

Low Clouds (% Sky Obscured)

40
74
83
48
47
78
68
61
43
34
28
37
59
49
56
83
80
75
68
60
53
46
42
38

Medium Clouds (% Sky Obscured)

100
94
88
76
81
79
33
13
13
14
24
97
100
100
99
98
93
91
94
63
43
23
16
12

High Clouds (% Sky Obscured)

100
76
100
100
80
57
30
40
41
65
86
93
100
100
100
100
100
100
100
100
100
100
79
60

ISS Passover

Visibility (miles)

9
9
9
9
9
9
6
9
4
9
9
1
4
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
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

32
21
17
17
10
29
63
67
59
35
95
95
95
94
95
95
95
89
78
72
67
76
75
62

Precipitation Amount (mm)

0
0
0
0
0
0
0.4
0.6
0.4
0
1.4
2.4
0.9
0.3
0.4
0.5
1
0.6
0.6
0.4
0.3
0.5
0.5
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
21
21
23
25
26
26
25
25
24
23
21
20
19
19
19
18
18
17
17
17
17
16
17

Feels Like (°C)

21
22
23
24
25
26
26
26
26
27
25
22
21
20
20
19
19
20
19
19
18
18
17
17

Dew Point (°C)

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

Relative Humidity (%)

88
88
92
88
66
57
58
67
76
77
83
91
93
95
96
98
98
98
96
96
96
95
95
86

Pressure (mb)

1009
1008
1009
1008
1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1006
1006
1005
1005
1005
1005
1005
1005
1005
1005

Ozone (du)

315
316
316
316
319
321
323
328
332
332
329
326
323
327
326
328
331
332
333
334
334
334
334
337

Friday 28

Full Moon 99%

20:36

08:10

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: 06:47, Set: 20:35, Transit: 13:40. Moon - Rise: 20:36, Set: 08:10. Civil Dark: 21:11 - 06:11. Nautical Dark: 21:56 - 05:27. Astro Dark: 22:46 - 04:37

Total Clouds (% Sky Obscured)

81
67
50
38
52
67
81
84
92
98
84
69
59
59
59
58
59
63
68
72
78
85
78
70

Low Clouds (% Sky Obscured)

35
37
46
35
37
44
48
47
50
56
48
39
30
27
28
28
28
31
37
48
59
74
69
63

Medium Clouds (% Sky Obscured)

10
5
3
0
5
3
5
21
38
53
36
22
6
11
15
20
32
33
35
40
39
39
35
31

High Clouds (% Sky Obscured)

57
58
35
12
16
20
25
17
9
2
3
4
5
5
24
52
59
63
62
61
52
47
32
16

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

37
25
21
10
11
8
2
15
30
38
42
39
32
60
68
63
78
95
95
95
95
95
88
74

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0
0.2
0.7
1.6
1.8
1.7
0.8
0.5
0.4

Wind Speed/Direction (mph)

11
13
14
15
16
15
14
13
9
5
6
6
7
7
7
8
10
9
8
10
9
8
8
10

Chance of Frost

Temperature (°C)

18
19
20
21
22
22
22
22
21
19
18
17
16
16
16
16
16
16
15
15
15
15
15
16

Feels Like (°C)

17
17
17
18
18
23
21
20
19
20
19
15
16
17
17
17
17
15
15
15
15
14
14
15

Dew Point (°C)

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

Relative Humidity (%)

80
72
64
54
48
47
44
44
51
60
71
77
82
89
90
90
90
92
92
95
95
95
95
89

Pressure (mb)

1005
1005
1006
1006
1006
1006
1005
1005
1005
1005
1005
1004
1004
1004
1003
1003
1002
1003
1003
1003
1003
1004
1004
1005

Ozone (du)

339
342
341
341
340
341
341
342
341
341
340
342
343
345
346
347
349
347
346
345
344
344
343
342

Saturday 29

Waning Gibbous 96%

20:46

09:28

10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
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: 06:48, 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)

58
49
42
35
32
30
29
42
50
58
62
69
70
80
89
100
99
97
96
98
99
100

Low Clouds (% Sky Obscured)

57
45
33
14
8
7
6
6
9
10
19
36
40
50
52
60
65
69
77
75
72
69

Medium Clouds (% Sky Obscured)

27
25
23
23
15
8
0
16
31
47
52
57
63
71
80
85
83
77
73
81
88
96

High Clouds (% Sky Obscured)

3
4
6
7
7
6
6
16
34
47
62
69
70
80
89
100
97
87
74
65
54
41

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

63
58
52
49
44
32
15
15
14
18
41
57
68
70
74
72
75
75
69
80
90
93

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
77
70
64
58
55
53
49
55
62
68
72
76
81
85
87
92
90
89
87
87
87

Pressure (mb)

1006
1007
1007
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1008
1008
1007
1007
1007
1006
1006
1006

Ozone (du)

342
341
341
341
341
342
343
344
343
342
342
340
339
338
336
335
333
331
329
328
327
327

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

Generated: 23/08/26 10:24:59. Forecast: 23/08/26 to 29/08/26. Timezone: UTC+2.00