Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 25

Waxing Gibbous 95%

19:54

04:17

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

26
21
44
49
94
100
79
66
65
64
42
10
19
1
2
2
4
18
36
39
40
60
78
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
2
0
11
19
0
3
16
0
0
0
2
13
31
39
28
14
4
7

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
29
19
1
2
1
2
2
4
3
22
39
34
44
62
72

High Clouds (% Sky Obscured)

2
21
44
49
93
100
75
63
52
50
42
6
2
0
0
0
0
2
2
39
40
60
78
80

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

Chance of Frost

Temperature (°C)

17
19
20
22
24
25
25
25
25
24
23
20
19
18
16
15
15
14
14
14
14
14
15
16

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
51
45
41
35
32
31
31
35
40
46
50
56
60
63
68
69
68
68
64
64
67
67
67

Pressure (mb)

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

Ozone (du)

327
325
324
325
325
325
324
324
322
321
322
325
328
324
322
318
318
317
314
311
311
311
314
317

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 OK
01 OK
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)

100
99
70
60
67
64
73
54
54
57
100
100
100
100
48
45
89
97
50
81
100
100
100
100

Low Clouds (% Sky Obscured)

12
12
16
55
42
48
34
20
25
50
53
41
53
13
28
29
0
0
3
2
2
0
25
14

Medium Clouds (% Sky Obscured)

69
61
20
6
39
33
8
9
7
7
13
4
1
0
0
2
15
8
12
21
11
23
28
99

High Clouds (% Sky Obscured)

100
95
60
4
4
2
30
25
25
34
100
100
100
100
37
41
89
97
27
51
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
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
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
3
5
4
12
7
5
1
0
0
0
0
0
1
5
15
2
7
32

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
11
11
10
10
10
10
10
9
8
8
9
10
10
9
8
9
9
9
9
9
9
9

Chance of Frost

Temperature (°C)

19
21
22
23
25
25
26
26
26
25
23
21
20
20
19
18
17
17
17
17
16
16
17
18

Feels Like (°C)

17
19
20
23
25
25
25
24
24
25
23
21
20
18
17
18
17
17
16
15
15
15
16
17

Dew Point (°C)

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

Relative Humidity (%)

62
55
50
48
46
43
42
42
42
48
59
62
62
60
66
69
71
73
73
74
74
78
72
66

Pressure (mb)

1016
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1012
1012
1011
1012
1012

Ozone (du)

319
321
321
320
318
317
315
316
315
315
314
313
312
311
313
310
309
308
308
308
308
306
305
307

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
76
94
84
73
90
100
100
100
100
100
100
100
100
100
100
70
81
56
55
67
61
88

Low Clouds (% Sky Obscured)

60
2
1
52
41
5
3
41
29
29
44
27
59
69
64
61
63
50
57
45
42
58
47
46

Medium Clouds (% Sky Obscured)

95
35
9
13
9
14
14
63
63
28
32
36
86
92
85
69
42
57
60
3
0
0
12
24

High Clouds (% Sky Obscured)

100
100
45
77
76
73
90
100
100
99
100
100
100
100
100
87
95
24
13
0
0
0
0
25

ISS Passover

Visibility (miles)

7
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
Very Light Rain
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

21
8
4
3
34
21
10
23
6
18
95
95
95
95
95
55
21
10
5
2
4
3
7
14

Precipitation Amount (mm)

0
0
0
0
0.2
0
0
0
0
0
1.8
1.3
1.6
2.1
0.2
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
10
11
13
12
10
10
10
7
4
5
5
4
3
5
6
8
10
9
10
11
12
11
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
20
21
22
24
24
26
25
26
25
24
21
21
21
20
21
20
19
19
19
19
19
19
20

Dew Point (°C)

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

Relative Humidity (%)

76
81
55
50
50
47
41
39
41
49
64
77
82
82
80
82
89
93
89
88
90
90
86
77

Pressure (mb)

1011
1011
1010
1010
1010
1010
1009
1009
1009
1008
1008
1009
1009
1008
1008
1008
1008
1008
1008
1007
1007
1007
1008
1008

Ozone (du)

310
313
316
319
324
323
321
319
317
317
316
316
314
313
315
317
319
320
322
325
327
328
328
326

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 OK
00 Bad
01 OK
02 OK
03 OK
04 OK
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)

90
93
97
100
88
89
84
88
94
100
82
61
41
37
42
29
16
22
27
36
45
80
96
98

Low Clouds (% Sky Obscured)

41
39
36
31
32
31
30
45
26
23
17
12
6
5
3
2
5
11
16
24
33
69
90
90

Medium Clouds (% Sky Obscured)

33
38
39
72
34
83
79
11
12
21
59
61
41
37
9
3
4
7
11
9
8
8
11
14

High Clouds (% Sky Obscured)

25
53
82
100
79
75
62
72
86
100
80
60
40
37
40
25
6
2
0
0
0
4
60
80

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 (%)

20
40
50
52
51
52
47
41
57
69
49
18
6
6
11
5
1
1
1
4
6
8
30
39

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
12
11
9
6
6
6
7
7
8
12
14
16
15
14
15
15
15
14
14
15
15
15
16

Relative Humidity (%)

68
60
57
49
40
36
37
39
38
43
58
73
89
86
85
87
92
93
92
92
95
95
92
90

Pressure (mb)

1007
1008
1008
1008
1008
1008
1008
1008
1007
1007
1007
1008
1008
1008
1008
1008
1008
1007
1007
1007
1007
1007
1007
1007

Ozone (du)

325
322
322
327
333
335
337
336
334
333
331
331
332
332
333
335
336
331
329
325
321
316
312
309

Saturday 29

Waning Gibbous 96%

20:46

09:28

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: 06:48, 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)

100
100
100
100
100
100
100
97
79
86
71
89
76
76
75
92
88
85
82
84
88
91
92
93

Low Clouds (% Sky Obscured)

82
80
48
32
80
86
91
88
72
80
56
49
42
40
34
43
54
65
75
72
69
67
61
55

Medium Clouds (% Sky Obscured)

12
42
94
99
100
100
97
48
18
11
12
11
9
11
14
20
22
16
9
28
25
26
19
18

High Clouds (% Sky Obscured)

100
99
90
63
76
63
66
51
26
0
31
67
76
76
75
86
83
75
71
62
33
14
27
36

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

61
75
69
51
63
48
27
32
28
15
24
27
23
41
52
60
95
84
42
45
41
33
41
49

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
80
76
64
62
86
88
81
71
66
67
75
77
77
80
81
86
88
86
88
86
85
83
73

Pressure (mb)

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

Ozone (du)

308
307
306
305
305
305
305
304
306
307
308
310
310
310
312
312
311
311
311
310
309
308
307
307

Sunday 30

Waning Gibbous 91%

20:57

No Set

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: 06:50, Set: 20:31, Transit: 13:40. Moon - Rise: 20:57, Set: No Set. Civil Dark: 21:06 - 06:15. Nautical Dark: 21:50 - 05:31. Astro Dark: 22:39 - 04:42

Total Clouds (% Sky Obscured)

93
89
87
82
76
70
64
72
70
68
68
68
64
67
69
72
78
81
85
88
93
97
93
88

Low Clouds (% Sky Obscured)

49
59
68
72
69
64
60
56
51
45
39
34
28
37
46
56
49
41
35
39
43
57
59
59

Medium Clouds (% Sky Obscured)

19
12
8
4
3
2
1
21
42
67
68
68
64
67
69
72
66
63
59
58
58
59
55
51

High Clouds (% Sky Obscured)

60
89
87
82
76
70
64
72
70
68
68
68
64
67
69
50
58
71
85
87
86
87
61
36

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
8
8
9
8
7
7
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

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

Precipitation Probability (%)

53
54
47
33
24
16
2
5
7
5
23
26
28
54
76
84
80
75
69
71
74
76
84
90

Precipitation Amount (mm)

0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.7
0.6
0.4
0.2
0.3
0.4
0.4
0.5
0.6

Wind Speed/Direction (mph)

18
19
19
20
20
19
18
17
15
12
10
8
6
6
8
10
11
12
12
13
14
14
15
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
57
56
55
53
53
53
53
57
62
68
71
77
82
85
90
96
95
93
92
92
92
93
90

Pressure (mb)

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

Ozone (du)

306
306
305
305
304
304
303
303
303
302
302
303
305
306
310
313
317
320
323
326
328
329
331
335

Monday 31

Waning Gibbous 83%

21:10

10:49

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

Sun - Rise: 06:52, Set: 20:29, Transit: 13:39. Moon - Rise: 21:10, Set: 10:49. Civil Dark: 21:04 - 06:16. Nautical Dark: 21:48 - 05:33. Astro Dark: 22:36 - 04:45

Total Clouds (% Sky Obscured)

84
81
77
73
78
84
90
78
68
58
58
58
58
47
33
23
44
64
85
82
81
81

Low Clouds (% Sky Obscured)

60
60
59
52
64
80
90
78
68
58
55
44
40
33
30
23
42
51
67
59
52
43

Medium Clouds (% Sky Obscured)

47
41
35
30
26
21
18
13
8
4
9
15
21
16
12
5
13
21
29
24
20
16

High Clouds (% Sky Obscured)

12
15
16
18
13
7
0
0
0
0
0
0
0
1
1
1
8
13
16
29
43
55

ISS Passover

Visibility (miles)

5
4
4
4
4
6
8
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

Precipitation Type

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

Precipitation Probability (%)

91
94
93
92
84
66
53
48
43
37
34
27
21
18
13
7
10
13
14
25
32
37

Precipitation Amount (mm)

0.6
0.7
0.7
0.8
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
18
19
19
20
20
20
20
18
17
17
16
15
13
11
9
7
7
7
7
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
89
86
85
82
80
77
73
73
75
73
72
69
68
68
69
70
71
73
74
78
82

Pressure (mb)

1006
1006
1007
1007
1008
1008
1009
1009
1010
1011
1011
1012
1013
1014
1014
1014
1014
1015
1015
1015
1015
1015

Ozone (du)

339
343
341
340
339
338
337
337
337
337
338
338
339
340
338
337
335
332
329
327
326
326

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

Generated: 25/08/26 10:59:14. Forecast: 25/08/26 to 31/08/26. Timezone: UTC+2.00