Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 20

First Quarter 56%

16:17

23:16

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
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:34, Set: 20:53, Transit: 13:42. Moon - Rise: 16:17, Set: 23:16. Civil Dark: 21:30 - 05:57. Nautical Dark: 22:17 - 05:10. Astro Dark: 23:12 - 04:16

Total Clouds (% Sky Obscured)

57
54
47
50
53
48
63
91
80
42
33
40
29
33
36
37
47
53
52
53
61
44
52
50

Low Clouds (% Sky Obscured)

40
32
30
43
47
42
61
86
75
35
24
22
21
25
18
28
25
30
36
43
48
38
34
40

Medium Clouds (% Sky Obscured)

0
0
24
20
14
11
22
9
8
20
14
22
0
0
12
0
18
18
19
2
21
0
7
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
2
11

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
71
78
84
75
85
92
77
77
77
36
27
12
6
5
7
6
7
22
8
6
6

Precipitation Amount (mm)

0
0
0.3
0.3
0.5
0.6
0.4
0.5
0.6
0.5
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
95
90
82
71
68
66
64
71
74
74
69
62
66
75
78
83
85
87
90
93
95
95
95

Pressure (mb)

1004
1005
1005
1005
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007
1007
1008
1008
1008

Ozone (du)

334
334
333
331
331
334
336
337
338
338
339
339
339
339
338
338
339
340
340
340
338
338
337
336

Friday 21

Waxing Gibbous 66%

17:24

23:54

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

Sun - Rise: 06:35, Set: 20:51, Transit: 13:42. Moon - Rise: 17:24, Set: 23:54. Civil Dark: 21:27 - 05:58. Nautical Dark: 22:14 - 05:12. Astro Dark: 23:09 - 04:18

Total Clouds (% Sky Obscured)

72
63
88
95
90
90
100
100
100
100
100
100
100
100
100
99
100
100
91
100
80
77
46
42

Low Clouds (% Sky Obscured)

33
33
38
35
45
61
60
79
78
84
72
54
19
21
6
2
1
1
0
15
22
22
19
30

Medium Clouds (% Sky Obscured)

22
27
78
52
73
71
69
65
100
100
91
100
100
100
100
95
99
100
82
100
65
5
3
8

High Clouds (% Sky Obscured)

59
48
45
71
47
52
100
100
100
100
100
100
100
100
100
99
85
58
49
15
36
62
27
3

ISS Passover

Visibility (miles)

9
9
8
8
8
8
5
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
0
0

Precipitation Type

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

Precipitation Probability (%)

8
30
64
52
56
45
52
58
49
67
81
57
13
2
1
2
4
6
10
9
12
17
19
16

Precipitation Amount (mm)

0
0
0.4
0.2
0
0
0.2
0.3
0
0
0.7
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
92
82
78
72
64
60
60
60
53
55
62
67
69
74
76
78
80
80
83
84
89
90
92

Pressure (mb)

1008
1009
1009
1009
1010
1010
1010
1010
1011
1011
1011
1012
1012
1012
1013
1013
1014
1014
1014
1015
1015
1015
1016
1016

Ozone (du)

336
336
336
336
338
338
341
343
344
343
343
345
345
346
347
347
347
349
350
352
354
356
357
360

Saturday 22

Waxing Gibbous 75%

18:19

00:45

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

Sun - Rise: 06:37, Set: 20:48, Transit: 13:42. Moon - Rise: 18:19, Set: 00:45. Civil Dark: 21:25 - 06:00. Nautical Dark: 22:11 - 05:14. Astro Dark: 23:05 - 04:21

Total Clouds (% Sky Obscured)

63
70
35
58
40
60
72
83
75
77
53
22
6
0
0
0
0
16
19
26
32
36
42
47

Low Clouds (% Sky Obscured)

54
65
33
44
21
55
63
73
66
70
53
22
6
0
0
0
0
14
16
20
21
26
28
31

Medium Clouds (% Sky Obscured)

22
23
0
22
17
13
14
32
27
29
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
8
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 (%)

16
21
32
16
36
38
25
4
5
14
5
3
2
1
0
1
0
0
0
0
1
1
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
77
68
62
53
57
55
51
48
45
53
53
55
61
70
76
79
81
83
84
84
84
83
81

Pressure (mb)

1017
1018
1018
1019
1019
1020
1020
1020
1020
1021
1021
1021
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

363
365
366
367
367
367
367
365
365
364
364
362
360
360
360
358
357
356
355
355
355
355
355
355

Sunday 23

Waxing Gibbous 83%

19:01

01:49

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

53
79
71
54
62
54
48
48
47
44
39
29
22
14
7
0
0
0
0
0
0
1
2
2

Low Clouds (% Sky Obscured)

39
79
65
36
51
51
48
39
30
22
20
17
15
10
6
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
5
10
15
16
20
23
23
20
17
11
6
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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 (%)

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

Chance of Frost

Temperature (°C)

11
12
15
16
18
19
20
21
21
21
21
20
19
18
16
14
13
13
12
12
11
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
73
66
58
47
41
38
36
35
35
36
39
43
51
60
66
69
72
76
77
80
81
83
84

Pressure (mb)

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

Ozone (du)

356
356
353
352
351
351
349
347
346
345
344
343
342
342
341
340
338
336
334
333
333
332
331
330

Monday 24

Waxing Gibbous 90%

19:32

03:01

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

Sun - Rise: 06:40, 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)

1
2
2
5
6
9
11
13
14
17
13
10
4
25
46
62
62
62
62
61
61
55
57
50

Low Clouds (% Sky Obscured)

0
0
0
0
3
6
9
12
14
17
13
8
3
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
6
15
22
24
22
19
27
31

High Clouds (% Sky Obscured)

0
0
0
2
2
3
3
1
0
0
0
2
2
25
46
62
62
62
62
61
61
55
57
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
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
1
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)

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

Chance of Frost

Temperature (°C)

11
12
14
16
18
20
21
22
22
23
23
22
21
19
18
17
16
15
15
14
14
14
13
14

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
79
69
65
57
49
45
41
38
38
38
44
48
57
60
64
67
69
70
71
71
74
74
71

Pressure (mb)

1024
1024
1024
1023
1023
1022
1022
1021
1020
1020
1019
1018
1018
1017
1016
1016
1016
1015
1015
1015
1014
1014
1014
1013

Ozone (du)

329
328
327
327
327
327
327
327
327
327
326
325
321
317
318
318
319
320
321
322
321
321
320
319

Tuesday 25

Waxing Gibbous 95%

19:54

04:17

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: 06:42, 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)

49
42
34
31
31
35
40
42
47
49
53
55
55
55
57
60
74
86
96
94
92
90
93
97

Low Clouds (% Sky Obscured)

0
0
0
0
3
9
13
14
14
16
22
30
37
46
53
60
50
43
36
30
23
13
9
7

Medium Clouds (% Sky Obscured)

35
30
30
25
25
34
39
35
27
17
19
24
31
38
43
47
50
53
56
49
39
31
42
57

High Clouds (% Sky Obscured)

44
37
34
31
31
35
31
24
13
2
4
7
10
11
8
9
31
51
78
79
81
83
87
91

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
8
8
8
8
7
7
6
7
8
9
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
12
18
25
37
40
40
40
32
14
18
23
28
31
28
30
32
31
26
25
23
22
30
36

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

Chance of Frost

Temperature (°C)

14
14
16
18
20
21
21
23
23
24
24
22
21
20
19
18
17
17
17
17
17
16
16
17

Feels Like (°C)

12
12
13
13
13
13
14
14
22
21
20
21
22
23
17
18
19
19
19
18
16
17
17
17

Dew Point (°C)

8
8
7
7
6
4
3
2
3
4
6
8
11
14
15
15
16
16
15
15
15
15
15
16

Relative Humidity (%)

69
68
56
47
39
34
28
25
27
28
30
40
53
69
76
83
90
90
90
90
90
92
92
93

Pressure (mb)

1013
1013
1013
1013
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1013

Ozone (du)

318
316
316
317
317
316
316
315
313
312
311
310
309
309
309
308
308
309
311
312
311
310
309
308

Wednesday 26

Waxing Gibbous 98%

20:11

05:35

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

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
100
99
99
99
100
100
100
100
100
96
91
87
88
90
92
88
86
82

Low Clouds (% Sky Obscured)

6
4
2
0
28
56
87
75
58
40
32
25
17
14
13
16
16
15
13

Medium Clouds (% Sky Obscured)

73
79
84
89
86
80
76
77
80
84
80
75
74
72
69
67
56
44
31

High Clouds (% Sky Obscured)

94
94
93
92
94
97
98
99
99
100
84
72
61
70
74
76
73
70
70

ISS Passover

Visibility (miles)

6
5
7
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

Precipitation Type

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

Precipitation Probability (%)

39
41
45
48
43
37
28
47
66
85
63
49
63
44
38
33
37
41
45

Precipitation Amount (mm)

0
0
0
0.2
0
0
0
0
0.4
0.8
0.3
0
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
7
8
8
7
6
5
6
6
7
5
3
2
3
5
6
5
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
17
18
18
20
23
25
23
22
22
22
23
23
22
23
23
22
22

Dew Point (°C)

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

Relative Humidity (%)

92
92
86
80
75
80
85
89
83
74
68
71
74
78
82
88
93
93
93

Pressure (mb)

1013
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

308
308
307
307
307
308
308
308
309
310
311
311
311
310
309
307
305
305
305

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

Generated: 20/08/26 07:41:27. Forecast: 20/08/26 to 26/08/26. Timezone: UTC+2.00