Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 31

Waning Gibbous 94%

22:16

07:50

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

Sun - Rise: 06:01, Set: 21:31, Transit: 13:45. Moon - Rise: 22:16, Set: 07:50. Civil Dark: 22:12 - 05:20. Nautical Dark: 23:09 - 04:24. Astro Dark: 00:31 - 03:04

Total Clouds (% Sky Obscured)

100
100
95
98
100
64
76
80
51
53
24
20
49
45
41
24
64
85
93
100
100
100
96
100

Low Clouds (% Sky Obscured)

24
29
34
24
32
19
71
63
44
45
17
6
12
13
12
15
9
0
19
17
0
0
0
0

Medium Clouds (% Sky Obscured)

87
75
67
86
28
1
31
22
18
19
8
11
10
1
8
1
0
0
0
29
18
47
44
91

High Clouds (% Sky Obscured)

91
70
78
97
100
44
0
8
2
2
0
2
48
39
28
1
64
85
93
100
100
100
75
35

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

24
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

Precipitation Type

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

Precipitation Probability (%)

8
8
11
8
13
26
22
47
48
48
24
5
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

3
3
4
6
8
10
10
12
12
11
11
12
12
11
9
6
6
5
4
4
3
3
2
2

Chance of Frost

Temperature (°C)

18
19
21
23
24
25
26
26
24
24
24
24
23
22
20
18
17
16
15
14
14
14
14
13

Feels Like (°C)

19
19
20
21
22
23
24
24
22
24
23
22
21
20
19
18
17
17
15
14
14
13
13
12

Dew Point (°C)

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

Relative Humidity (%)

89
80
65
51
47
44
43
40
45
52
47
39
41
47
56
67
77
86
89
90
89
90
89
89

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1014
1015
1015
1015
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

330
330
333
335
333
334
339
339
340
340
339
339
340
340
341
342
340
338
336
335
336
338
338
340

Saturday 1

Waning Gibbous 88%

22:27

09:07

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

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

Total Clouds (% Sky Obscured)

63
0
9
25
18
26
49
40
46
51
21
0
37
43
74
95
100
100
100
96
76
100
100
100

Low Clouds (% Sky Obscured)

0
0
8
10
4
2
24
22
20
17
5
0
0
0
0
15
19
14
30
11
11
14
7
2

Medium Clouds (% Sky Obscured)

63
0
0
16
12
17
32
27
25
26
12
0
24
26
30
30
36
33
30
33
30
28
15
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
35
71
100
100
100
96
73
100
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 (%)

5
4
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)

2
2
2
2
2
2
3
5
8
11
12
12
11
9
7
6
6
5
5
5
5
5
5
5

Chance of Frost

Temperature (°C)

14
15
18
20
22
23
24
25
25
25
25
24
23
22
20
18
17
16
15
15
14
14
14
13

Feels Like (°C)

13
14
19
21
22
25
25
25
24
22
21
22
21
21
20
16
15
14
13
13
13
14
12
11

Dew Point (°C)

11
10
9
7
5
4
4
4
3
4
5
5
7
9
10
11
11
11
11
10
9
9
9
9

Relative Humidity (%)

84
72
55
42
33
28
26
25
24
24
27
30
35
42
50
61
67
70
74
73
69
71
73
72

Pressure (mb)

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

Ozone (du)

345
351
359
361
358
356
354
351
351
349
346
343
340
336
335
334
333
334
332
332
331
330
331
330

Sunday 2

Waning Gibbous 80%

22:37

10:23

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
05 Bad
06 Bad

Sun - Rise: 06:05, Set: 21:28, Transit: 13:45. Moon - Rise: 22:37, Set: 10:23. Civil Dark: 22:09 - 05:24. Nautical Dark: 23:04 - 04:29. Astro Dark: 00:22 - 03:13

Total Clouds (% Sky Obscured)

100
69
100
100
89
72
79
99
73
71
59
48
88
100
100
94
55
65
50
67
84
100
99
98

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
2
11
15
0
0
9
2
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
38
44
33
5
38
63
47
43
29
17
13
19
20
23
23
32
23
27
28
29
31
71

High Clouds (% Sky Obscured)

100
65
100
100
84
60
67
98
5
11
14
17
87
100
100
87
27
28
20
47
72
100
97
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
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
7
8
9
9
9
8
8
9
10
13
13
14
13
11
10
12
12
11
11
11
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
13
15
17
19
21
22
23
24
26
25
23
23
21
19
18
17
16
15
14
14
14
13
14

Dew Point (°C)

8
7
6
5
4
4
4
4
4
4
4
5
7
7
10
10
9
6
7
7
7
7
6
7

Relative Humidity (%)

69
58
46
37
30
26
24
23
22
21
21
24
29
34
44
49
48
42
45
47
49
50
49
50

Pressure (mb)

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

Ozone (du)

331
332
331
330
328
328
328
327
326
325
324
324
322
321
321
320
319
319
319
318
318
318
317
318

Monday 3

Waning Gibbous 71%

22:49

11:41

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

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

Total Clouds (% Sky Obscured)

98
80
65
42
21
20
35
43
37
31
34
22
34
49
69
97
94
89
100
97
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
1
15
1
15
32

Medium Clouds (% Sky Obscured)

62
30
20
12
10
10
9
6
3
0
5
10
17
24
31
40
33
36
74
78
93
100
100
77

High Clouds (% Sky Obscured)

92
66
41
15
1
0
13
31
35
30
25
6
9
33
60
97
94
89
100
84
100
100
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
4
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
Very Light Rain
None
Very Light Rain
Light Rain
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
1
3
1
1
0
0
1
1
1
5
12
13
14
30
38
46
45
64
70
69
81

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
0.4
0.3
0.5

Wind Speed/Direction (mph)

9
9
10
10
10
9
9
7
5
5
6
7
11
9
8
9
8
7
5
5
4
2
5
3

Chance of Frost

Temperature (°C)

17
18
20
23
25
28
30
31
32
33
33
33
32
30
27
25
23
22
21
21
21
21
20
20

Feels Like (°C)

14
15
17
20
23
27
29
31
31
32
32
31
30
30
28
25
22
22
22
22
22
22
20
21

Dew Point (°C)

6
6
7
8
9
9
10
11
8
7
6
6
8
12
15
15
16
17
17
16
15
15
17
17

Relative Humidity (%)

49
46
42
39
35
31
29
27
22
19
18
18
22
32
47
55
66
76
79
73
66
67
85
85

Pressure (mb)

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

Ozone (du)

317
317
318
319
318
319
318
319
320
320
319
319
320
319
319
319
318
318
318
317
317
319
322
323

Tuesday 4

Waning Gibbous 60%

23:02

13:02

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 OK
21 OK
22 Bad
23 Bad
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 Bad

Sun - Rise: 06:08, Set: 21:24, Transit: 13:45. Moon - Rise: 23:02, Set: 13:02. Civil Dark: 22:05 - 05:27. Nautical Dark: 22:59 - 04:34. Astro Dark: 00:13 - 03:22

Total Clouds (% Sky Obscured)

100
100
100
78
70
68
95
79
74
81
87
93
82
28
47
64
53
43
33
31
29
28
37
49

Low Clouds (% Sky Obscured)

48
44
39
41
44
54
60
48
44
35
23
12
0
0
0
0
0
0
0
2
4
4
5
6

Medium Clouds (% Sky Obscured)

61
59
53
48
37
30
28
22
21
21
21
21
22
19
33
43
42
41
33
31
29
27
35
44

High Clouds (% Sky Obscured)

100
100
100
78
54
26
35
26
26
40
60
78
66
21
39
55
39
23
8
9
7
8
5
5

ISS Passover

Visibility (miles)

9
6
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

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
None
None
None
None

Precipitation Probability (%)

95
90
73
63
53
37
8
13
16
18
15
10
1
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

1
0.7
0.4
0.2
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
2
4
4
3
5
7
10
12
12
13
11
9
8
7
5
3
3
3
3
4
4
5
6

Chance of Frost

Temperature (°C)

20
21
22
23
26
28
29
31
31
31
31
29
28
27
25
23
21
20
20
20
19
19
18
19

Feels Like (°C)

21
23
23
24
28
30
31
28
29
28
28
27
26
26
26
26
25
24
23
22
20
21
22
21

Dew Point (°C)

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

Relative Humidity (%)

81
77
74
62
43
36
31
25
24
27
34
38
35
37
47
61
79
79
80
81
78
77
75
64

Pressure (mb)

1010
1010
1011
1011
1011
1010
1010
1010
1010
1011
1011
1011
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014

Ozone (du)

323
321
318
317
318
316
314
314
312
310
309
309
309
309
308
308
308
307
307
307
307
306
306
306

Wednesday 5

Waning Gibbous 58%

23:19

14:26

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 OK
20 OK
21 OK
22 OK
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:09, Set: 21:22, Transit: 13:45. Moon - Rise: 23:19, Set: 14:26. Civil Dark: 22:03 - 05:29. Nautical Dark: 22:56 - 04:36. Astro Dark: 00:08 - 03:26

Total Clouds (% Sky Obscured)

61
59
55
49
52
56
61
57
58
62
59
54
46
42
38
33
39
46
53
66
79
92
85
81

Low Clouds (% Sky Obscured)

10
9
12
15
20
26
27
21
14
9
8
9
9
6
3
0
3
5
9
16
17
19
15
15

Medium Clouds (% Sky Obscured)

54
50
43
37
40
44
50
48
44
36
26
19
13
14
17
21
31
41
50
54
61
65
56
42

High Clouds (% Sky Obscured)

1
1
1
2
2
2
1
0
0
0
0
1
1
4
7
9
10
11
9
24
40
55
55
60

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
1
1
2
2
1
2
2
0
1
1
0
0
0
0
3
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

20
21
23
25
28
28
29
29
29
29
28
27
26
25
23
22
20
20
19
19
18
18
18
18

Feels Like (°C)

21
20
23
22
22
23
24
25
30
29
28
28
28
28
24
23
24
23
22
21
19
20
20
20

Dew Point (°C)

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

Relative Humidity (%)

57
48
46
45
43
40
39
37
38
39
39
42
46
48
56
65
76
76
76
76
80
83
88
85

Pressure (mb)

1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1017
1017
1017
1017
1017
1017
1016
1016

Ozone (du)

306
306
306
305
305
306
306
307
307
307
307
307
307
308
307
306
305
305
304
304
304
304
304
305

Thursday 6

Third Quarter 49%

23:43

15:54

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 OK
22 OK
23 Bad
00 Bad
01 Bad

Sun - Rise: 06:11, Set: 21:21, Transit: 13:45. Moon - Rise: 23:43, Set: 15:54. Civil Dark: 22:00 - 05:31. Nautical Dark: 22:54 - 04:39. Astro Dark: 00:04 - 03:30

Total Clouds (% Sky Obscured)

75
81
81
75
72
69
62
67
76
88
75
62
49
47
44
46
46
51
51

Low Clouds (% Sky Obscured)

18
19
19
20
22
22
21
42
64
86
65
41
20
12
5
0
0
0
0

Medium Clouds (% Sky Obscured)

29
28
29
26
24
25
25
28
27
26
27
29
26
28
30
31
32
29
30

High Clouds (% Sky Obscured)

55
50
50
50
52
57
54
36
19
0
1
2
4
15
19
26
21
21
26

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
8
8
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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
1
1
3
4
5
14
17
19
17
16
14
12
7
3
7
10
13

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
19
21
23
25
26
27
29
29
29
29
28
28
27
26
24
23
22
21

Feels Like (°C)

19
19
23
23
24
24
24
25
33
33
33
31
30
28
27
27
27
26
26

Dew Point (°C)

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

Relative Humidity (%)

81
77
68
59
52
46
40
36
42
49
58
57
56
55
61
68
74
75
75

Pressure (mb)

1017
1017
1017
1017
1017
1016
1016
1015
1015
1015
1014
1014
1014
1014
1014
1014
1014
1013
1013

Ozone (du)

305
306
306
307
307
308
309
310
311
312
313
313
312
312
313
313
314
313
313

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

Generated: 31/07/26 07:19:43. Forecast: 31/07/26 to 06/08/26. Timezone: UTC+2.00