Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 17

Waxing Crescent 27%

12:30

22:12

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: 06:27, Set: 20:59, Transit: 13:43. Moon - Rise: 12:30, Set: 22:12. Civil Dark: 21:37 - 05:49. Nautical Dark: 22:25 - 05:01. Astro Dark: 23:22 - 04:07

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
94
100
99
95
95
97
93
78
91
89
88
71
82
81
97
100
97
99

Low Clouds (% Sky Obscured)

93
100
100
96
100
100
89
100
98
83
80
71
75
55
67
65
57
2
28
24
26
66
87
89

Medium Clouds (% Sky Obscured)

100
100
100
63
51
39
33
31
32
32
25
31
21
26
29
35
33
29
31
37
82
95
96
98

High Clouds (% Sky Obscured)

100
100
49
0
0
0
28
45
57
62
71
59
53
10
4
4
12
71
21
15
81
86
36
55

ISS Passover

Visibility (miles)

6
2
5
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
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
95
90
68
36
20
27
21
17
4
3
1
0
0
0
0
0
0
0
0
0
1
19
50

Precipitation Amount (mm)

2.3
1.8
0.7
0.6
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
3
3
4
4
6
7
8
9
10
10
10
10
8
5
4
3
3
2
3
3
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
95
96
95
95
90
83
79
71
58
51
48
50
50
53
59
64
69
80
83
84
84
79
78

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

331
331
339
345
346
340
335
331
329
326
322
318
315
313
310
307
307
306
306
306
305
306
303
303

Tuesday 18

Waxing Crescent 36%

13:48

22:28

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: 06:29, Set: 20:57, Transit: 13:43. Moon - Rise: 13:48, Set: 22:28. Civil Dark: 21:34 - 05:51. Nautical Dark: 22:22 - 05:04. Astro Dark: 23:19 - 04:10

Total Clouds (% Sky Obscured)

100
100
100
100
99
100
99
100
100
100
100
98
100
100
100
100
100
100
98
94
98
97
100
100

Low Clouds (% Sky Obscured)

86
87
94
93
91
93
99
100
91
99
88
80
37
25
19
20
22
40
33
70
66
77
78
83

Medium Clouds (% Sky Obscured)

99
100
98
99
59
53
39
37
34
29
63
77
100
94
100
96
99
100
91
88
94
90
99
100

High Clouds (% Sky Obscured)

100
99
100
100
64
71
80
100
100
100
100
89
100
100
100
100
100
97
84
38
58
54
56
57

ISS Passover

Visibility (miles)

8
4
2
6
9
9
9
9
9
9
9
9
9
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

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

Precipitation Probability (%)

88
95
95
84
18
13
24
22
28
22
15
13
22
24
26
27
14
45
21
15
39
31
14
9

Precipitation Amount (mm)

0.6
1.6
1.2
0.6
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
90
95
98
95
95
90
88
86
86
85
81
74
70
70
75
81
83
86
85
81
79
79
79

Pressure (mb)

1013
1013
1012
1011
1011
1010
1010
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1009
1008
1008
1008
1007

Ozone (du)

304
304
305
310
313
313
313
313
312
310
309
307
306
305
304
304
304
304
305
304
304
303
303
306

Wednesday 19

Waxing Crescent 46%

15:04

22:48

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 OK
19 OK
20 OK
21 Good
22 Bad
23 Bad
00 Bad
01 OK
02 OK
03 Bad
04 Bad

Sun - Rise: 06:30, Set: 20:55, Transit: 13:43. Moon - Rise: 15:04, Set: 22:48. Civil Dark: 21:32 - 05:53. Nautical Dark: 22:19 - 05:06. Astro Dark: 23:15 - 04:13

Total Clouds (% Sky Obscured)

100
100
91
100
100
71
76
89
97
89
91
96
67
36
33
25
14
51
77
55
33
40
43
49

Low Clouds (% Sky Obscured)

40
17
13
15
14
27
33
51
73
64
74
71
57
22
23
21
14
46
64
41
29
30
30
38

Medium Clouds (% Sky Obscured)

100
92
45
45
45
45
41
47
46
43
42
35
21
2
1
2
2
16
31
20
0
2
0
0

High Clouds (% Sky Obscured)

85
100
91
100
100
71
76
85
85
13
8
80
0
0
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
2
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 (%)

28
34
43
14
6
3
6
10
13
14
10
5
5
6
2
4
3
3
7
15
7
10
20
21

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
79
75
64
55
48
45
43
43
43
43
44
46
46
49
57
56
63
63
70
79
84
87

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1007
1007
1007
1007
1007
1006
1006
1006

Ozone (du)

309
311
317
319
321
322
323
324
326
328
331
333
335
340
347
349
345
343
341
345
349
350
346
346

Thursday 20

First Quarter 56%

16:17

23:16

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 OK
22 Good
23 Good
00 OK
01 OK
02 OK
03 Bad
04 Bad

Sun - Rise: 06:32, Set: 20:53, Transit: 13:42. Moon - Rise: 16:17, Set: 23:16. Civil Dark: 21:30 - 05:55. Nautical Dark: 22:17 - 05:08. Astro Dark: 23:12 - 04:16

Total Clouds (% Sky Obscured)

65
56
53
63
56
58
57
81
84
84
83
74
55
50
50
44
18
3
8
13
19
29
39
50

Low Clouds (% Sky Obscured)

62
43
37
44
33
34
37
40
60
60
52
38
12
5
5
22
2
2
7
11
16
24
30
39

Medium Clouds (% Sky Obscured)

1
2
3
10
15
21
20
78
84
58
83
63
24
22
21
14
10
3
3
2
0
0
0
2

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
6

ISS Passover

Visibility (miles)

8
9
9
9
8
7
8
9
9
9
5
5
4
9
9
9
9
9
9
9
9
9
9
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
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

31
11
11
14
34
35
39
37
37
42
60
66
49
34
30
18
15
4
8
9
6
11
28
40

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
92
82
74
63
53
46
58
66
61
70
66
56
57
64
71
74
78
83
86
87
90

Pressure (mb)

1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1007

Ozone (du)

347
348
348
347
346
346
344
342
341
341
341
342
343
344
344
343
343
343
342
342
341
340
341
341

Friday 21

Waxing Gibbous 66%

17:24

23:54

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 OK
22 OK
23 OK
00 OK
01 OK
02 Bad
03 Bad
04 Bad

Sun - Rise: 06:34, Set: 20:51, Transit: 13:42. Moon - Rise: 17:24, Set: 23:54. Civil Dark: 21:27 - 05:57. Nautical Dark: 22:14 - 05:10. Astro Dark: 23:09 - 04:18

Total Clouds (% Sky Obscured)

59
72
81
74
68
67
75
82
76
90
80
67
60
61
77
50
33
15
23
31
39
41
43
41

Low Clouds (% Sky Obscured)

38
42
43
43
42
58
61
64
53
73
68
62
47
34
32
21
16
12
18
26
29
27
25
19

Medium Clouds (% Sky Obscured)

21
40
60
40
20
1
7
14
23
14
7
0
12
25
37
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

34
62
81
67
45
22
40
52
65
42
23
5
23
45
60
50
27
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
6
6
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
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
7
6
13
44
48
58
52
41
28
23
15
13
10
6
21
16
7
11
11
3
8
10
11

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
90
77
71
69
65
53
43
45
43
43
46
52
61
68
74
83
84
87
89
89
89

Pressure (mb)

1007
1007
1007
1008
1008
1008
1009
1009
1009
1009
1009
1010
1010
1010
1011
1011
1010
1011
1011
1012
1012
1012
1012
1012

Ozone (du)

342
343
342
343
343
344
343
343
342
341
341
341
341
340
342
344
344
345
345
345
345
345
343
341

Saturday 22

Waxing Gibbous 75%

18:19

00:45

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 OK
00 OK
01 OK
02 OK
03 OK
04 OK

Sun - Rise: 06:35, Set: 20:48, Transit: 13:42. Moon - Rise: 18:19, Set: 00:45. Civil Dark: 21:25 - 05:58. Nautical Dark: 22:11 - 05:12. Astro Dark: 23:05 - 04:21

Total Clouds (% Sky Obscured)

46
43
42
49
57
68
77
87
94
90
84
79
76
71
68
62
59
56
47
37
24
32
36
41

Low Clouds (% Sky Obscured)

16
12
17
15
20
25
44
61
74
75
77
78
76
71
68
62
59
53
37
23
8
18
29
39

Medium Clouds (% Sky Obscured)

5
10
14
14
15
13
16
21
24
29
32
35
23
12
1
2
2
4
7
11
15
12
8
4

High Clouds (% Sky Obscured)

22
30
36
42
54
67
71
62
36
20
11
2
0
4
5
10
10
15
16
14
17
13
8
4

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
7
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

21
25
19
41
45
47
56
60
64
54
44
35
29
23
14
10
4
0
0
0
0
1
1
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
14
16
16
16
17
17
18
17
17
17
17
17
17
15
14
14
13
13
12
10
10

Dew Point (°C)

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

Relative Humidity (%)

89
87
84
83
75
68
63
62
61
61
56
52
48
50
52
53
58
61
65
70
75
80
80
80

Pressure (mb)

1012
1013
1013
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1017
1017
1017
1018
1018
1019
1019
1019
1019
1019
1020

Ozone (du)

338
337
335
334
334
334
333
333
332
331
331
331
331
332
332
332
334
337
339
341
343
345
345
346

Sunday 23

Waxing Gibbous 83%

19:01

01:49

05 OK
06 OK
07 OK
08 OK
09 Bad
10 OK
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

Sun - Rise: 06:37, Set: 20:46, Transit: 13:42. Moon - Rise: 19:01, Set: 01:49. Civil Dark: 21:23 - 06:00. Nautical Dark: 22:09 - 05:14. Astro Dark: 23:02 - 04:24

Total Clouds (% Sky Obscured)

39
37
35
43
48
46
45
44
39
37
34
31
28
26
23
16
8
0
3
7
11

Low Clouds (% Sky Obscured)

33
28
23
20
17
13
15
15
12
8
9
10
9
12
11
9
7
0
3
7
11

Medium Clouds (% Sky Obscured)

4
4
3
6
8
16
17
20
21
22
20
19
13
7
1
1
0
0
0
0
0

High Clouds (% Sky Obscured)

3
2
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
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

Precipitation Type

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

Precipitation Probability (%)

3
3
1
3
3
1
10
11
2
4
3
0
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
11
10
13
14
15
15
16
17
21
20
19
19
20
21
16
15
16
14
14

Dew Point (°C)

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

Relative Humidity (%)

81
79
77
76
65
57
50
43
37
31
32
32
33
37
43
50
58
64
75
76
79

Pressure (mb)

1020
1020
1020
1020
1020
1021
1021
1021
1020
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

346
347
347
348
348
349
350
351
352
354
352
351
350
345
340
334
333
331
330
330
330

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

Generated: 17/08/26 05:03:10. Forecast: 17/08/26 to 23/08/26. Timezone: UTC+2.00