Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 28

Waxing Gibbous 94%

20:29

03:55

22 OK
23 OK
00 Bad
01 OK
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

Sun - Rise: 05:26, Set: 21:47, Transit: 13:37. Moon - Rise: 20:29, Set: 03:55. Civil Dark: 22:31 - 04:40. Nautical Dark: 23:39 - 03:32. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

45
37
77
45
100
86
77
100
97
98
82
98
57
100
94
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
6
0
0
0
0
0
0
0
0
0
0
0
0
0
11
0
40
7
0
10
23
0
0

Medium Clouds (% Sky Obscured)

0
0
0
9
48
52
54
85
77
88
64
40
40
33
45
55
60
100
100
100
78
94
72
79

High Clouds (% Sky Obscured)

16
37
20
38
100
70
15
97
96
96
45
95
36
100
94
100
100
100
100
100
100
100
100
97

ISS Passover

Visibility (miles)

9
9
7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
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
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
3
2
0
0
0
4
7
19
28
22
4
12
54
72
95
80
44
13
10
2
5

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.8
0.9
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

20
18
17
16
15
15
15
15
15
16
18
20
23
25
28
29
28
28
26
23
22
23
21
19

Feels Like (°C)

20
18
17
15
13
13
13
14
13
16
17
19
23
25
27
29
28
29
26
23
23
23
20
19

Dew Point (°C)

13
10
12
12
11
9
8
9
9
10
11
13
16
18
20
21
20
20
18
20
20
20
18
17

Relative Humidity (%)

64
58
72
77
73
68
65
66
66
67
65
65
67
66
61
62
62
63
64
79
87
83
85
85

Pressure (mb)

1023
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021
1022
1022
1022
1022
1022
1021
1021
1021
1022
1022
1021
1021
1022

Ozone (du)

348
348
344
343
341
339
338
337
337
336
340
339
337
336
337
335
331
330
328
327
328
328
328
328

Friday 29

Waxing Gibbous 98%

21:41

04:15

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

Sun - Rise: 05:26, Set: 21:48, Transit: 13:37. Moon - Rise: 21:41, Set: 04:15. Civil Dark: 22:33 - 04:39. Nautical Dark: 23:41 - 03:30. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

97
100
20
15
20
16
12
25
48
30
40
38
4
3
5
7
15
50
81
100
43
79
85
42

Low Clouds (% Sky Obscured)

0
0
0
0
3
0
0
0
0
0
0
0
0
0
0
0
0
14
12
22
29
21
0
0

Medium Clouds (% Sky Obscured)

65
53
20
15
20
10
2
2
4
0
0
4
0
0
3
0
0
12
31
18
3
9
39
30

High Clouds (% Sky Obscured)

91
99
10
8
6
11
9
23
42
30
33
37
2
0
0
6
8
10
42
100
17
62
60
11

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

19
17
16
16
14
15
14
15
14
15
18
19
22
24
25
25
26
24
24
24
23
24
22
19

Dew Point (°C)

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

Relative Humidity (%)

86
86
85
86
89
89
89
87
86
80
69
59
51
46
42
39
36
35
36
38
44
51
61
67

Pressure (mb)

1022
1022
1022
1022
1022
1022
1022
1022
1021
1022
1022
1022
1022
1021
1021
1021
1020
1019
1019
1018
1018
1017
1017
1017

Ozone (du)

330
332
334
337
338
339
340
338
336
334
333
333
333
335
335
337
338
339
339
339
340
340
339
339

Saturday 30

Waxing Gibbous 100%

No Rise

04:42

22 Bad
23 Bad
00 OK
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

Sun - Rise: 05:25, Set: 21:49, Transit: 13:37. Moon - Rise: No Rise, Set: 04:42. Civil Dark: 22:34 - 04:38. Nautical Dark: 23:43 - 03:28. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

57
68
31
93
100
100
100
100
100
87
100
100
100
99
95
91
100
100
89
89
100
100
98
97

Low Clouds (% Sky Obscured)

32
27
23
46
55
51
69
37
52
21
8
0
5
0
4
0
42
34
34
27
33
13
22
33

Medium Clouds (% Sky Obscured)

37
39
10
25
35
37
62
97
97
83
64
55
25
31
51
61
52
45
42
37
45
55
82
76

High Clouds (% Sky Obscured)

10
23
11
81
100
100
100
99
100
5
100
100
100
99
85
91
99
100
82
85
100
100
73
53

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

Precipitation Probability (%)

0
0
0
2
8
36
10
7
10
13
24
13
4
1
8
0
6
0
0
0
0
1
2
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
6
6
5
4
3
3
3
2
2
2
4
5
8
10
11
12
13
13
12
12
11
9
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
71
77
83
89
92
92
92
90
85
81
80
72
60
49
44
43
43
45
48
52
57
63
70

Pressure (mb)

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

Ozone (du)

340
341
342
340
341
344
344
344
346
347
351
357
363
358
354
350
349
348
350
351
353
356
357
359

Sunday 31

Full Moon 100%

22:47

05:20

22 Bad
23 Bad
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

Sun - Rise: 05:24, Set: 21:50, Transit: 13:37. Moon - Rise: 22:47, Set: 05:20. Civil Dark: 22:35 - 04:37. Nautical Dark: 23:45 - 03:26. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
88
75
96
96
90
81
76
67
72
73
78
72
79
93
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

42
43
44
45
42
33
25
18
5
0
12
25
40
53
66
79
80
82
84
82
81
79
78
78

Medium Clouds (% Sky Obscured)

56
62
49
38
38
38
42
38
35
35
36
32
31
41
49
100
87
97
96
97
98
99
79
92

High Clouds (% Sky Obscured)

9
23
0
0
0
0
2
10
18
28
25
20
8
31
56
80
87
93
100
100
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
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
4
4
6
19
16
2
0
0
0
0
0
0
0
0
0
0
2
12
3
6
11
23
37

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
69
75
80
79
85
86
90
92
89
79
69
58
54
50
48
53
56
59
65
65
61
64
65

Pressure (mb)

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

Ozone (du)

361
365
365
358
354
350
350
349
349
348
347
345
343
341
342
342
342
339
337
334
330
329
329
329

Monday 1

Waning Gibbous 97%

23:42

06:11

22 Bad
23 Bad
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

Sun - Rise: 05:23, Set: 21:51, Transit: 13:37. Moon - Rise: 23:42, Set: 06:11. Civil Dark: 22:37 - 04:36. Nautical Dark: 23:47 - 03:25. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
92
84
75
78
80

Low Clouds (% Sky Obscured)

79
79
79
79
77
68
69
69
70
71
68
65
62
68
74
67
66
66
66
57
48
38
43
49

Medium Clouds (% Sky Obscured)

88
97
97
97
98
98
100
97
95
92
94
91
100
63
100
100
82
69
67
54
32
7
12
21

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
67
33
5
33
67
100
100
100
100
67
33
0
9
19

ISS Passover

Visibility (miles)

9
8
9
9
9
9
9
2
5
3
8
7
9
9
5
6
4
4
4
5
6
8
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
Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

54
75
69
67
69
74
95
95
95
89
86
95
95
95
95
95
95
95
73
62
53
40
34
32

Precipitation Amount (mm)

0
0.5
0.3
0.3
0.3
0.3
1.1
1.1
0.8
0.6
0.5
0.7
1.1
1
1.3
1.1
1.5
0.8
0.5
0.3
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
11
13
13
12
13
13
14
15
14
15
15
15
15
16
16
16
16
16
15
15
15
15
14

Relative Humidity (%)

64
68
86
85
83
85
87
96
98
96
98
96
95
93
83
83
84
82
82
81
81
82
83
83

Pressure (mb)

1011
1011
1010
1010
1009
1008
1008
1007
1006
1006
1006
1005
1005
1005
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004

Ozone (du)

330
332
337
338
341
345
350
350
353
354
360
359
357
358
360
364
364
370
375
380
381
383
384
385

Tuesday 2

Waning Gibbous 93%

00:25

07:14

22 Bad
23 Bad
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

Sun - Rise: 05:22, Set: 21:52, Transit: 13:37. Moon - Rise: 00:25, Set: 07:14. Civil Dark: 22:38 - 04:35. Nautical Dark: 23:49 - 03:23. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

80
78
76
75
79
84
87
87
90
92
84
75
64
70
79
88
84
80
77
81
84
83
89
95

Low Clouds (% Sky Obscured)

56
58
60
63
60
60
60
67
75
82
75
69
62
64
70
76
70
66
62
58
52
45
55
64

Medium Clouds (% Sky Obscured)

31
25
27
25
35
40
45
40
35
30
24
11
0
8
12
18
16
15
15
26
36
47
45
45

High Clouds (% Sky Obscured)

28
19
9
0
33
67
87
60
28
0
0
0
0
0
0
0
0
0
0
33
67
83
89
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

32
33
39
45
51
51
44
56
55
38
48
52
45
34
29
28
27
24
14
11
7
1
5
8

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
8
10
11
11
11
12
12
12
12
12
13
13
14
15
16
15
15
14
13
12
11
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
11
11
11
12
12
12
12
12
13
13
13
12
12
12
12
12
12
12
13
12
12
12
12

Relative Humidity (%)

83
83
84
86
87
90
93
96
95
95
92
85
79
72
68
65
61
62
63
65
68
71
73
75

Pressure (mb)

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

Ozone (du)

386
387
391
394
398
395
392
389
381
374
366
363
359
356
354
351
349
348
347
346
346
346
346
346

Wednesday 3

Waning Gibbous 88%

00:55

08:25

22 Bad
23 Bad
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

Sun - Rise: 05:22, Set: 21:53, Transit: 13:37. Moon - Rise: 00:55, Set: 08:25. Civil Dark: 22:39 - 04:34. Nautical Dark: 23:51 - 03:22. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

100
100
99
99
97
94
92
94
96
97
98
99
100
100
100
100
94
87
87
85
82
85

Low Clouds (% Sky Obscured)

74
82
89
97
80
63
48
58
67
75
70
62
52
54
58
61
60
59
59
54
50
49

Medium Clouds (% Sky Obscured)

50
50
55
60
54
37
28
39
45
52
54
60
66
49
37
29
30
25
23
15
7
0

High Clouds (% Sky Obscured)

95
96
96
96
94
90
89
64
39
15
43
54
56
46
30
20
15
10
5
5
1
1

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
8
7
7
7
8
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

Precipitation Type

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

Precipitation Probability (%)

2
41
58
72
73
61
33
26
28
34
51
61
63
53
43
33
33
37
38
38
35
37

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
8
10
12
13
12
12
11
12
13
14
15
16
16
16
16
16
16
17
17
16
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
77
77
78
78
83
87
90
92
90
90
92
93
95
87
82
77
66
57
49
52
56

Pressure (mb)

1006
1006
1006
1005
1005
1004
1004
1004
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1005
1005
1006
1006

Ozone (du)

346
346
345
344
343
343
343
342
346
350
354
355
356
356
358
360
361
361
361
360
359
358

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

Generated: 28/05/26 22:26:08. Forecast: 28/05/26 to 03/06/26. Timezone: UTC+2.00