Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 25

Waxing Gibbous 88%

19:33

01:17

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

Sun - Rise: 05:51, Set: 21:40, Transit: 13:46. Moon - Rise: 19:33, Set: 01:17. Civil Dark: 22:23 - 05:08. Nautical Dark: 23:23 - 04:08. Astro Dark: 01:21 - 02:21

Total Clouds (% Sky Obscured)

90
65
51
45
88
86
66
29
52
21
42
22
32
14
3
62
42
81
67
71
70
92
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
4
19
20
14
18
13
23
17
30
10
2
0
0
0
0
0
0
0
8
0

Medium Clouds (% Sky Obscured)

0
0
6
31
0
6
16
18
9
3
23
0
0
0
0
0
0
30
32
28
25
44
45
39

High Clouds (% Sky Obscured)

9
6
6
45
86
68
50
4
24
3
4
1
0
0
0
62
42
81
55
40
45
30
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
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)

3
4
4
4
4
5
5
6
8
8
9
11
13
13
13
14
13
12
10
8
5
5
5
5

Chance of Frost

Temperature (°C)

16
16
15
15
15
15
16
18
20
22
24
26
26
27
27
26
26
25
24
23
21
20
19
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
74
74
74
73
70
64
57
49
44
43
39
36
32
30
32
32
32
31
33
40
44
49
55

Pressure (mb)

1013
1012
1012
1011
1011
1010
1010
1010
1010
1009
1009
1008
1008
1008
1007
1007
1007
1007
1006
1006
1006
1006
1006
1006

Ozone (du)

329
328
327
328
328
329
330
331
331
333
335
337
333
333
331
330
328
330
331
329
327
326
326
325

Sunday 26

Waxing Gibbous 93%

20:23

02:00

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
00 Bad

Sun - Rise: 05:52, Set: 21:39, Transit: 13:46. Moon - Rise: 20:23, Set: 02:00. Civil Dark: 22:22 - 05:10. Nautical Dark: 23:21 - 04:10. Astro Dark: 01:10 - 02:29

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
99
100
97
100
99
99
94
99
99
90
83
80
88
77
62
81
68
61

Low Clouds (% Sky Obscured)

17
8
44
56
47
83
87
90
97
98
89
77
89
81
79
79
60
70
71
35
19
52
60
41

Medium Clouds (% Sky Obscured)

68
41
88
98
100
99
85
89
96
99
62
53
63
44
50
30
39
26
43
70
47
27
16
24

High Clouds (% Sky Obscured)

100
97
96
91
88
54
35
7
14
10
0
0
0
1
1
1
0
0
1
1
2
2
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

1
9
31
20
31
16
30
24
30
39
34
50
60
50
41
57
68
57
67
30
13
9
9
16

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.4
0
0
0
0.3
0
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
18
18
18
18
18
18
19
19
19
20
20
19
19
19
21
21
20
20
19
18
18
17

Feels Like (°C)

17
18
18
18
18
18
18
18
18
18
18
17
18
19
18
19
19
20
19
19
19
19
17
17

Dew Point (°C)

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

Relative Humidity (%)

69
80
88
83
82
82
81
80
73
80
78
64
71
93
89
91
75
65
69
74
78
86
83
85

Pressure (mb)

1005
1005
1005
1005
1005
1004
1004
1004
1004
1005
1004
1004
1004
1005
1005
1005
1005
1005
1006
1006
1007
1008
1008
1009

Ozone (du)

325
326
325
324
326
329
331
332
334
339
343
344
345
346
345
344
342
340
338
338
338
338
338
339

Monday 27

Waxing Gibbous 97%

21:01

02:56

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 Good
18 Good
19 Good
20 Good
21 Good
22 OK
23 OK
00 OK

Sun - Rise: 05:54, Set: 21:37, Transit: 13:46. Moon - Rise: 21:01, Set: 02:56. Civil Dark: 22:20 - 05:11. Nautical Dark: 23:19 - 04:13. Astro Dark: 00:55 - 02:37

Total Clouds (% Sky Obscured)

61
53
75
71
51
49
62
58
67
64
78
81
89
83
91
45
6
0
0
8
16
22
26
27

Low Clouds (% Sky Obscured)

40
36
67
63
40
49
62
58
67
64
73
73
72
69
82
45
5
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

25
9
17
13
15
0
0
0
0
0
35
26
35
36
25
0
0
0
0
6
10
16
18
15

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
7
5
7
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

13
8
3
4
1
4
3
21
34
44
44
32
9
12
2
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
92
93
92
93
93
85
78
72
72
76
76
66
63
62
55
48
46
48
52
61
71
75
78

Pressure (mb)

1009
1010
1010
1011
1012
1013
1014
1015
1016
1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1020
1020
1020
1021
1021

Ozone (du)

340
339
339
339
339
340
339
337
336
335
335
336
336
335
335
336
336
334
333
331
330
328
327
326

Tuesday 28

Waxing Gibbous 99%

21:28

04:03

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

Sun - Rise: 05:55, Set: 21:36, Transit: 13:46. Moon - Rise: 21:28, Set: 04:03. Civil Dark: 22:18 - 05:13. Nautical Dark: 23:16 - 04:15. Astro Dark: 00:48 - 02:43

Total Clouds (% Sky Obscured)

31
32
31
35
51
40
17
18
23
32
29
32
33
43
70
83
86
66
68
78
92
93
75
54

Low Clouds (% Sky Obscured)

0
5
11
18
15
10
3
2
1
0
5
10
15
16
18
19
12
6
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
14
14
15
12
8
3
5
11
12
12
11
11
20
70
74
22
21
15
18
24
66
60
27

High Clouds (% Sky Obscured)

1
0
0
2
19
21
11
7
5
11
5
5
1
1
2
13
39
39
58
67
80
81
61
42

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

Chance of Frost

Temperature (°C)

16
15
15
15
15
15
16
18
20
23
25
27
28
29
30
30
30
29
29
28
25
23
22
21

Feels Like (°C)

17
16
16
16
15
14
15
18
20
22
23
25
27
28
29
28
28
28
28
28
25
22
21
20

Dew Point (°C)

12
12
11
11
11
11
11
10
9
9
8
8
8
9
9
9
9
9
9
11
14
15
14
13

Relative Humidity (%)

79
79
78
78
76
75
70
58
48
40
34
30
28
27
26
26
26
27
29
35
48
62
60
60

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018

Ozone (du)

327
326
326
325
324
324
324
322
323
321
320
319
318
318
319
319
320
321
322
322
321
323
325
323

Wednesday 29

Full Moon 100%

21:48

05:17

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

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 - 04:17. Astro Dark: 00:42 - 02:49

Total Clouds (% Sky Obscured)

19
20
26
3
1
0
0
0
0
0
0
0
1
27
53
80
73
56
40
34
25
14
10
5

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

13
20
26
2
1
0
0
0
0
0
0
0
0
4
8
12
17
15
17
11
8
4
2
1

High Clouds (% Sky Obscured)

13
9
5
2
1
0
0
0
0
0
0
0
1
24
48
67
44
26
5
4
2
1
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 (%)

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)

6
6
6
6
6
6
6
6
7
7
7
6
6
7
6
6
7
6
5
7
6
6
6
6

Chance of Frost

Temperature (°C)

21
20
20
20
20
20
20
22
25
28
30
32
34
35
36
36
36
34
33
31
29
26
24
23

Feels Like (°C)

20
21
20
18
20
20
21
23
25
28
31
33
34
35
35
35
35
36
37
38
29
29
28
28

Dew Point (°C)

13
12
11
11
11
11
11
9
8
8
8
7
7
6
5
4
4
6
9
11
12
13
14
15

Relative Humidity (%)

59
57
56
56
58
58
54
42
33
27
24
21
18
16
15
14
13
17
22
29
36
44
53
60

Pressure (mb)

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

Ozone (du)

322
321
321
322
324
326
327
327
328
328
328
324
324
323
322
321
320
319
318
317
318
318
318
318

Thursday 30

Waning Gibbous 100%

22:03

06:34

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

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 - 04:20. Astro Dark: 00:37 - 02:54

Total Clouds (% Sky Obscured)

1
1
0
0
3
7
10
10
12
17
19
22
21
44
65
86
88
82
75
64
53
43
43
19

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
3
6
10
9
10
17
18
18
15
13
11
8
9
10
10
16
20
20
14
11

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
2
5
7
7
7
7
36
63
86
82
78
69
53
40
27
34
19

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
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)

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

Chance of Frost

Temperature (°C)

22
21
20
20
19
20
21
22
24
27
30
32
34
36
37
37
37
36
34
33
30
28
25
24

Feels Like (°C)

27
26
20
21
21
21
20
20
25
25
25
27
27
28
39
39
38
40
41
42
31
30
29
27

Dew Point (°C)

16
16
16
15
15
14
13
12
12
11
11
10
9
8
8
8
8
10
11
13
14
14
14
15

Relative Humidity (%)

66
73
74
75
75
68
61
55
44
36
30
25
20
17
16
16
16
20
24
30
36
43
52
57

Pressure (mb)

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

Ozone (du)

318
317
318
318
318
319
319
320
318
317
316
316
315
315
316
316
317
314
311
308
307
306
305
306

Friday 31

Waning Gibbous 98%

22:16

07:50

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 - 04:22. Astro Dark: 00:31 - 02:59

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: 25/07/26 01:29:35. Forecast: 25/07/26 to 31/07/26. Timezone: UTC+2.00