Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 13

Waxing Crescent 1%

07:02

21:24

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

Sun - Rise: 06:21, Set: 21:07, Transit: 13:44. Moon - Rise: 07:02, Set: 21:24. Civil Dark: 21:46 - 05:42. Nautical Dark: 22:35 - 04:52. Astro Dark: 23:37 - 03:51

Total Clouds (% Sky Obscured)

3
2
0
0
0
0
0
0
2
3
4
4
3
3
2
2
2
2
3
3
2
0
0
0

Low Clouds (% Sky Obscured)

0
0
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)

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

High Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
2
3
4
4
3
3
2
2
1
1
2
2
2
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
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)

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

Chance of Frost

Temperature (°C)

20
19
18
17
17
16
16
16
18
21
24
27
30
32
33
34
35
35
35
34
32
28
25
24

Feels Like (°C)

18
18
17
16
16
16
15
15
17
20
22
26
28
30
32
33
33
33
33
32
31
26
24
23

Dew Point (°C)

3
3
4
4
4
4
4
3
3
3
2
3
2
2
2
1
1
1
1
1
3
3
2
2

Relative Humidity (%)

33
35
38
40
43
44
44
43
37
29
24
20
17
15
13
12
12
11
11
12
16
20
22
24

Pressure (mb)

1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1020
1020
1019
1019
1019
1019
1019
1019

Ozone (du)

308
308
307
307
307
306
306
306
306
308
308
308
306
306
306
307
306
306
305
304
304
303
303
304

Friday 14

Waxing Crescent 4%

08:29

21:37

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

Sun - Rise: 06:22, Set: 21:05, Transit: 13:44. Moon - Rise: 08:29, Set: 21:37. Civil Dark: 21:43 - 05:44. Nautical Dark: 22:33 - 04:55. Astro Dark: 23:33 - 03:54

Total Clouds (% Sky Obscured)

1
20
33
5
19
11
7
3
4
41
51
84
72
25
21
2
3
1
2
21
16
21
22
44

Low Clouds (% Sky Obscured)

0
0
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)

0
0
0
0
0
0
0
0
0
0
0
10
17
15
12
0
1
1
0
17
16
20
19
44

High Clouds (% Sky Obscured)

1
20
33
5
19
11
6
2
2
41
50
74
54
2
1
1
1
0
2
1
0
1
0
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
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)

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

Chance of Frost

Temperature (°C)

23
22
21
20
19
18
18
17
20
24
27
31
34
35
36
37
37
35
32
29
27
24
22
21

Feels Like (°C)

22
20
20
19
18
18
17
16
19
23
27
30
32
34
35
36
35
33
30
28
26
25
23
22

Dew Point (°C)

3
3
3
2
2
3
2
2
3
3
3
3
3
3
3
4
5
6
7
9
11
12
12
13

Relative Humidity (%)

26
28
29
31
33
34
35
36
32
25
20
16
14
12
12
13
14
16
20
28
36
45
53
61

Pressure (mb)

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

Ozone (du)

303
302
303
303
303
303
303
303
304
304
305
305
305
304
303
302
303
303
303
303
303
303
303
302

Saturday 15

Waxing Crescent 10%

09:52

21:48

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
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

Sun - Rise: 06:24, Set: 21:03, Transit: 13:43. Moon - Rise: 09:52, Set: 21:48. Civil Dark: 21:41 - 05:46. Nautical Dark: 22:30 - 04:57. Astro Dark: 23:29 - 03:57

Total Clouds (% Sky Obscured)

69
53
58
65
73
76
70
70
76
77
91
93
89
87
61
85
77
82
81
72
71
73
74
62

Low Clouds (% Sky Obscured)

0
0
4
6
7
16
0
0
14
31
26
20
15
14
31
33
41
48
37
37
31
25
24
16

Medium Clouds (% Sky Obscured)

63
49
45
52
71
26
29
50
43
24
23
40
32
19
33
30
36
37
40
72
71
68
67
62

High Clouds (% Sky Obscured)

26
4
1
0
12
76
70
70
76
77
91
59
55
69
9
58
18
20
20
20
20
15
15
15

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

3
18
23
16
13
43
45
33
27
20
9
3
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0.2
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
6
6
5
5
6
4
6
7
6
8
8
9
9
9
9
10
12
13
12
12
10
9

Chance of Frost

Temperature (°C)

20
19
19
18
18
18
18
18
19
20
22
24
25
26
27
27
27
27
26
24
23
21
20
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
72
77
83
86
89
90
90
80
69
57
48
44
39
36
35
35
35
39
48
57
62
63
67

Pressure (mb)

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

Ozone (du)

303
304
304
303
303
304
305
306
307
307
309
310
309
308
307
307
308
309
309
310
312
313
313
312

Sunday 16

Waxing Crescent 18%

11:11

21:59

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

Sun - Rise: 06:25, Set: 21:01, Transit: 13:43. Moon - Rise: 11:11, Set: 21:59. Civil Dark: 21:39 - 05:48. Nautical Dark: 22:27 - 04:59. Astro Dark: 23:26 - 04:01

Total Clouds (% Sky Obscured)

49
37
30
32
30
36
34
42
48
41
45
40
45
47
43
43
59
70
80
87
93
92
98
98

Low Clouds (% Sky Obscured)

10
7
8
2
0
5
12
18
25
25
30
34
37
35
32
31
28
21
15
8
6
4
2
5

Medium Clouds (% Sky Obscured)

49
37
15
1
0
0
0
0
0
0
0
0
0
0
0
0
2
9
39
38
24
38
51
53

High Clouds (% Sky Obscured)

15
15
15
15
20
20
16
19
22
16
14
1
1
1
4
6
24
42
61
76
82
81
85
90

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
3
0
2
0
0
0
0
1
1
0
2
0
0
0
0
0
0
0
0
0
0
0
18

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

Chance of Frost

Temperature (°C)

18
18
17
16
15
15
15
15
16
18
20
21
23
24
25
25
25
25
24
22
21
19
18
18

Feels Like (°C)

17
16
15
14
14
14
14
15
15
17
19
21
22
23
24
24
24
22
20
19
18
16
16
15

Dew Point (°C)

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

Relative Humidity (%)

68
70
73
78
82
84
86
87
77
67
58
51
47
41
37
33
32
32
36
44
55
63
64
59

Pressure (mb)

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

Ozone (du)

312
313
312
314
315
317
319
317
317
318
319
319
320
321
321
321
320
320
320
320
320
319
320
322

Monday 17

Waxing Crescent 27%

12:30

22:12

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
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

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 - 04:04

Total Clouds (% Sky Obscured)

99
100
85
71
59
63
67
69
67
55
61
57
83
93
92
91
90
96
97
99
99
100
100
98

Low Clouds (% Sky Obscured)

13
11
14
17
23
33
29
40
44
39
51
51
78
87
73
58
44
36
29
23
18
10
0
0

Medium Clouds (% Sky Obscured)

59
60
50
69
53
61
64
68
56
12
6
9
13
16
30
43
55
51
32
26
38
53
66
68

High Clouds (% Sky Obscured)

95
100
70
40
10
20
27
10
3
5
5
12
21
27
41
53
61
69
85
96
98
99
100
96

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 (%)

26
29
26
18
5
3
5
1
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
63
65
67
68
70
71
73
68
60
53
49
49
50
46
47
48
48
49
51
52
57
64
70

Pressure (mb)

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

Ozone (du)

323
322
323
324
326
328
333
335
335
336
338
339
339
330
327
325
323
320
320
320
319
320
321
322

Tuesday 18

Waxing Crescent 36%

13:48

22:28

00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
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

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 - 04:07

Total Clouds (% Sky Obscured)

95
93
89
84
72
72
67
69
67
73
75
76
82
86
86
81
76
73
69
67
56
47
38
44

Low Clouds (% Sky Obscured)

0
0
13
25
28
14
10
10
5
5
9
10
12
23
24
28
34
35
42
47
51
47
38
44

Medium Clouds (% Sky Obscured)

70
74
54
35
20
30
30
30
29
24
32
35
38
35
38
39
38
44
53
63
56
47
38
44

High Clouds (% Sky Obscured)

92
85
85
84
72
65
42
25
23
11
10
9
5
2
1
2
1
1
1
0
1
1
1
9

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

Precipitation Probability (%)

0
0
6
9
10
41
56
69
53
37
6
8
7
6
7
7
4
5
4
0
0
0
0
1

Precipitation Amount (mm)

0
0
0
0
0
0
0.3
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
17
17
16
16
15
15
15
16
17
19
21
22
23
24
24
24
24
23
23
22
21
20
19

Feels Like (°C)

18
17
18
15
15
15
15
14
13
16
17
17
17
18
18
25
23
23
23
23
24
19
19
19

Dew Point (°C)

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

Relative Humidity (%)

74
78
82
82
83
83
79
75
72
62
52
43
39
35
31
31
31
31
35
41
47
51
57
64

Pressure (mb)

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

Ozone (du)

323
323
324
322
320
318
316
313
311
310
308
307
307
306
305
305
305
305
304
304
303
302
301
300

Wednesday 19

Waxing Crescent 46%

15:04

22:48

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 - 04:10

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: 12/08/26 23:54:37. Forecast: 13/08/26 to 19/08/26. Timezone: UTC+2.00