Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 29

Full Moon 100%

21:48

05:17

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

Sun - Rise: 05:57, Set: 21:34, Transit: 13:46. Moon - Rise: 21:48, Set: 05:17. Civil Dark: 22:16 - 05:15. Nautical Dark: 23:14 - 04:20. Astro Dark: 00:42 - 02:54

Total Clouds (% Sky Obscured)

68
55
48
2
7
36
77
14
2
0
0
0
2
3
0
0
5
3
2
0
15
0
34
46

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

21
5
3
2
3
1
0
0
0
0
0
0
2
0
0
0
4
3
2
0
0
0
23
31

High Clouds (% Sky Obscured)

4
3
2
0
3
27
73
13
1
0
0
0
0
0
0
0
0
0
0
0
14
0
6
2

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)

3
3
3
6
6
6
6
6
6
6
6
6
7
7
6
7
6
5
8
7
6
6
7
7

Chance of Frost

Temperature (°C)

17
17
17
20
23
25
28
30
31
32
33
34
34
34
33
31
28
26
25
24
22
21
20
20

Feels Like (°C)

17
17
17
21
23
25
27
29
32
33
34
34
33
33
33
31
29
27
24
23
22
21
21
20

Dew Point (°C)

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

Relative Humidity (%)

60
60
60
53
44
36
30
26
23
20
18
18
17
18
21
33
42
45
43
41
48
53
57
60

Pressure (mb)

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

Ozone (du)

323
324
325
324
323
321
321
322
322
322
320
318
319
321
323
323
324
322
320
322
320
319
317
317

Thursday 30

Waning Gibbous 98%

22:03

06:34

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

Sun - Rise: 05:58, Set: 21:33, Transit: 13:45. Moon - Rise: 22:03, Set: 06:34. Civil Dark: 22:14 - 05:17. Nautical Dark: 23:11 - 04:22. Astro Dark: 00:37 - 02:59

Total Clouds (% Sky Obscured)

77
50
47
75
50
98
73
78
99
100
100
100
100
90
5
2
11
53
54
96
79
93
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
15
17
24
22
16
11
3
2
0
0
0
0
0
8
24
21
19
19

Medium Clouds (% Sky Obscured)

31
32
29
29
14
2
0
0
2
80
91
99
77
28
2
0
0
6
14
27
23
26
28
17

High Clouds (% Sky Obscured)

33
0
1
20
20
96
72
74
99
100
100
100
100
76
2
1
11
53
29
84
28
75
100
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
0
0
0
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
7
8
9
9
10
11
12
13
13
11
9
8
8
5
4
3
3
4
4
4
5

Chance of Frost

Temperature (°C)

19
19
20
21
23
24
26
28
28
28
28
26
25
25
24
24
22
20
19
18
18
18
17
17

Feels Like (°C)

20
18
21
22
22
23
25
28
28
26
25
24
23
23
23
24
24
22
21
19
18
18
17
16

Dew Point (°C)

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

Relative Humidity (%)

64
72
77
69
57
50
45
40
39
39
41
46
47
48
47
54
65
74
77
82
83
81
79
78

Pressure (mb)

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

Ozone (du)

316
321
320
318
317
317
320
320
317
315
317
319
324
333
324
325
325
327
325
323
324
326
326
327

Friday 31

Waning Gibbous 94%

22:16

07:50

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 06:00, Set: 21:31, Transit: 13:45. Moon - Rise: 22:16, Set: 07:50. Civil Dark: 22:12 - 05:18. Nautical Dark: 23:09 - 04:24. Astro Dark: 00:31 - 03:04

Total Clouds (% Sky Obscured)

100
100
100
90
75
62
76
85
71
70
71
72
65
58
52
49
52
53
68
50
60
58
57
49

Low Clouds (% Sky Obscured)

25
40
32
40
35
29
57
60
36
37
34
40
24
18
15
9
5
0
9
20
30
30
32
33

Medium Clouds (% Sky Obscured)

55
50
80
54
37
54
43
35
17
11
5
0
0
0
0
2
28
0
0
0
0
1
2
3

High Clouds (% Sky Obscured)

100
100
100
20
5
9
1
16
20
20
15
15
15
15
15
24
33
46
64
50
60
48
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
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
9
8
12
20
20
35
49
32
17
13
5
4
1
0
0
0
0
0
0
0
1
1
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
18
20
22
23
24
24
24
25
25
25
24
23
21
20
18
17
16
16
15
14
14

Feels Like (°C)

15
15
15
17
18
22
22
24
23
23
23
22
22
21
19
19
17
15
14
14
15
15
15
14

Dew Point (°C)

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

Relative Humidity (%)

73
68
66
61
54
49
45
41
37
35
34
36
37
41
48
53
59
64
65
68
70
75
78
79

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1016
1017
1017
1018
1018
1017
1017
1017
1017

Ozone (du)

328
330
332
333
334
334
334
333
333
333
334
334
334
335
336
334
333
333
333
336
337
335
333
331

Saturday 1

Waning Gibbous 88%

22:27

09:07

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 06:01, Set: 21:29, Transit: 13:45. Moon - Rise: 22:27, Set: 09:07. Civil Dark: 22:10 - 05:20. Nautical Dark: 23:06 - 04:27. Astro Dark: 00:26 - 03:09

Total Clouds (% Sky Obscured)

76
87
89
66
68
62
58
55
51
53
54
55
62
74
88
99
96
88
88
87
81
66
60
57

Low Clouds (% Sky Obscured)

32
28
26
17
9
0
10
20
30
18
9
0
3
6
9
10
12
15
17
21
24
16
10
3

Medium Clouds (% Sky Obscured)

11
19
27
26
26
29
23
27
24
30
37
40
42
47
49
51
52
54
50
51
52
51
46
45

High Clouds (% Sky Obscured)

38
46
42
30
38
44
30
16
1
1
0
0
30
61
88
94
86
78
82
84
81
55
48
39

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)

5
4
4
4
4
4
4
4
4
5
7
10
11
10
9
9
7
7
7
7
7
7
7
7

Chance of Frost

Temperature (°C)

14
14
14
15
18
20
21
23
24
25
26
26
26
25
24
23
21
19
18
17
17
16
15
15

Feels Like (°C)

14
13
13
15
18
21
23
24
24
26
25
23
23
23
22
21
19
18
17
16
15
15
16
15

Dew Point (°C)

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

Relative Humidity (%)

82
83
79
70
59
47
37
29
25
23
22
23
25
26
29
38
49
58
63
73
77
79
78
76

Pressure (mb)

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

Ozone (du)

331
333
340
344
345
344
343
339
335
331
330
330
330
329
329
327
329
328
327
327
328
327
327
327

Sunday 2

Waning Gibbous 80%

22:37

10:23

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 06:03, Set: 21:28, Transit: 13:45. Moon - Rise: 22:37, Set: 10:23. Civil Dark: 22:09 - 05:22. Nautical Dark: 23:04 - 04:29. Astro Dark: 00:22 - 03:13

Total Clouds (% Sky Obscured)

62
69
85
69
72
72
79
87
94
96
98
100
100
100
100
100
100
100
98
96
93
92
92
95

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

47
48
50
16
12
5
7
10
12
19
23
27
44
60
75
78
78
79
83
84
86
72
59
46

High Clouds (% Sky Obscured)

46
57
73
54
70
72
79
87
92
94
97
100
100
100
100
93
85
79
79
69
47
60
79
95

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
1
2
2
13
22
29
28
20
9
8
7
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
8
7
7
7
8
9
10
10
11
11
11
10
10
8
9
11
10
7
7
6
7

Chance of Frost

Temperature (°C)

14
14
15
17
18
21
23
25
26
27
28
28
28
27
26
25
24
22
21
20
20
19
18
18

Feels Like (°C)

14
15
15
15
15
16
18
18
20
21
25
25
25
25
25
26
20
20
20
19
20
19
15
15

Dew Point (°C)

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

Relative Humidity (%)

78
78
74
60
49
40
34
31
28
26
26
26
26
30
35
41
42
43
44
49
54
58
61
63

Pressure (mb)

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

Ozone (du)

326
326
326
325
324
322
320
320
320
320
319
319
318
318
318
318
318
318
317
317
317
318
317
317

Monday 3

Waning Gibbous 80%

22:49

11:41

05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
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

Sun - Rise: 06:05, Set: 21:26, Transit: 13:45. Moon - Rise: 22:49, Set: 11:41. Civil Dark: 22:07 - 05:24. Nautical Dark: 23:01 - 04:32. Astro Dark: 00:17 - 03:18

Total Clouds (% Sky Obscured)

97
98
99
99
100
100
98
95
92
87
86
82
72
66
56
67
69
62
68
74
78
76
74
72

Low Clouds (% Sky Obscured)

0
1
2
7
12
17
12
6
1
5
7
9
7
7
9
8
8
7
6
3
0
3
7
10

Medium Clouds (% Sky Obscured)

48
51
53
65
77
89
71
52
34
30
24
19
15
15
15
17
16
20
22
26
28
30
28
26

High Clouds (% Sky Obscured)

97
98
98
99
99
100
98
95
90
86
83
79
66
56
40
41
46
50
61
72
76
62
48
35

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 (%)

1
1
0
7
9
5
6
5
1
1
0
0
0
0
0
9
11
9
21
20
13
17
12
4

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)

8
8
9
9
9
10
11
11
10
10
10
9
9
10
10
10
9
8
7
7
6
6
6
6

Chance of Frost

Temperature (°C)

17
18
18
19
20
22
23
25
27
28
29
29
30
29
28
27
25
24
23
22
21
20
20
19

Feels Like (°C)

15
15
14
14
16
17
17
17
18
18
28
27
27
27
28
28
27
27
27
26
25
23
20
20

Dew Point (°C)

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

Relative Humidity (%)

65
63
60
59
56
52
50
46
43
40
38
36
35
36
37
39
47
56
67
72
76
82
85
88

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1010
1010
1010
1011
1011
1011
1012
1012
1012
1012

Ozone (du)

317
316
316
316
316
317
317
319
321
323
323
324
324
325
325
326
323
320
317
315
312
310
308
306

Tuesday 4

Waning Gibbous 71%

23:02

13:02

Sun - Rise: 06:06, Set: 21:24, Transit: 13:45. Moon - Rise: 23:02, Set: 13:02. Civil Dark: 22:05 - 05:26. Nautical Dark: 22:59 - 04:34. Astro Dark: 00:13 - 03:22

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 29/07/26 05:20:37. Forecast: 29/07/26 to 04/08/26. Timezone: UTC+2.00