Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 27

Waxing Gibbous 89%

19:14

03:40

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

Sun - Rise: 05:27, Set: 21:45, Transit: 13:36. Moon - Rise: 19:14, Set: 03:40. Civil Dark: 22:30 - 04:42. Nautical Dark: 23:37 - 03:34. Astro Dark: N/A - N/A

Total Clouds (% Sky Obscured)

95
93
62
12
55
65
32
1
1
1
0
0
13
1
1
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

30
7
0
8
23
22
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

21
22
17
5
32
21
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

87
4
16
1
5
34
28
1
1
0
0
0
13
1
1
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
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)

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

Chance of Frost

Temperature (°C)

17
16
14
13
12
11
11
10
9
10
12
14
16
18
20
21
22
23
24
24
24
23
22
20

Feels Like (°C)

16
15
14
12
11
10
9
9
8
9
10
12
13
16
18
20
21
22
23
24
24
24
23
20

Dew Point (°C)

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

Relative Humidity (%)

62
66
69
71
72
75
78
80
78
73
62
53
46
42
39
37
37
38
39
41
43
50
56
62

Pressure (mb)

1026
1027
1027
1027
1027
1026
1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1025
1025
1024
1024
1023
1023
1023

Ozone (du)

331
334
336
335
335
335
336
335
334
334
336
337
338
338
339
341
343
342
343
344
344
345
344
344

Thursday 28

Waxing Gibbous 94%

20:29

03:55

22 Good
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: 05:26, 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)

0
84
68
100
65
92
59
63
55
98
93
100
88
60
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
6
0
0
0
0
0
0
0
0
0
0
0
0
0
35
0
0
0
0
0
28
0

Medium Clouds (% Sky Obscured)

0
10
0
0
2
40
56
61
55
57
45
21
25
45
54
53
63
100
99
55
79
93
99
94

High Clouds (% Sky Obscured)

0
84
59
100
61
74
17
20
17
73
93
100
62
21
100
100
100
100
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
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
5
16
11
26
64
48
8
6
13
11
5
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
17
16
16
15
15
15
15
15
16
18
20
22
25
26
28
27
26
26
26
25
24
22
21

Feels Like (°C)

18
16
15
13
13
12
12
12
13
14
16
20
22
25
27
27
27
26
26
25
25
22
24
19

Dew Point (°C)

11
9
8
8
7
6
6
6
6
8
11
13
16
18
19
20
21
21
20
19
17
17
17
16

Relative Humidity (%)

64
62
61
59
57
55
53
54
57
61
63
63
65
63
62
61
69
77
72
65
62
64
71
73

Pressure (mb)

1023
1024
1024
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021
1022
1021
1021
1021
1021
1021
1022

Ozone (du)

345
344
342
342
339
338
338
337
341
341
340
337
337
334
333
332
331
332
330
328
328
329
330
332

Friday 29

Waxing Gibbous 98%

21:41

04:15

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

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)

100
100
100
98
73
84
66
73
58
93
31
29
11
20
37
29
27
23
29
25
49
52
56
61

Low Clouds (% Sky Obscured)

0
0
0
0
7
30
33
28
0
0
0
0
0
0
0
3
8
7
5
0
4
3
5
7

Medium Clouds (% Sky Obscured)

98
34
0
33
0
0
17
20
17
39
23
20
4
0
18
10
0
0
0
3
15
52
28
25

High Clouds (% Sky Obscured)

96
99
95
91
64
72
32
42
38
79
5
3
5
15
8
10
25
23
29
25
20
25
34
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
38
38
38
38
81
62
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
1
1
0
0
0
2
1
1
1
1
3
2
0
0
0
0
0
0
0
0
2
8
9

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
6
6
5
5
3
2
2
2
2
2
3
2
3
4
3
3
3
3
3
6
8
9
8

Chance of Frost

Temperature (°C)

19
17
17
16
15
14
14
13
13
15
17
18
20
22
23
25
26
26
26
26
26
25
23
22

Feels Like (°C)

18
17
16
17
16
15
16
15
15
17
18
19
22
21
23
25
26
25
27
26
25
24
22
22

Dew Point (°C)

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

Relative Humidity (%)

76
81
81
83
84
86
86
83
83
76
67
60
56
52
50
45
42
41
41
43
46
56
63
69

Pressure (mb)

1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1019
1019
1018
1017
1017
1016
1016
1016
1016

Ozone (du)

337
342
344
344
343
342
340
340
339
338
336
336
337
338
338
338
338
338
338
337
337
336
337
337

Saturday 30

Waxing Gibbous 100%

No Rise

04:42

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: 05:25, 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)

76
99
100
100
100
100
100
100
100
100
94
84
82
85
90
95
96
98
99
87
76
63
77
84

Low Clouds (% Sky Obscured)

9
26
43
59
56
67
68
65
63
66
57
60
64
61
58
55
39
23
8
8
9
10
17
24

Medium Clouds (% Sky Obscured)

29
40
47
49
91
84
74
79
83
85
76
62
16
22
27
34
38
41
48
54
68
31
43
52

High Clouds (% Sky Obscured)

73
98
100
100
100
90
100
100
100
100
75
32
0
24
48
73
80
87
94
63
31
0
0
4

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

7
9
9
10
39
47
55
77
83
72
55
34
13
17
22
5
14
16
14
8
2
2
9
4

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

8
8
7
6
5
5
3
2
4
3
4
5
5
7
8
11
13
14
14
14
13
11
10
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
77
82
86
90
89
83
83
89
92
90
83
78
76
61
48
51
52
51
50
55
62
70
78

Pressure (mb)

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

Ozone (du)

337
336
335
332
332
333
337
342
344
354
361
373
370
362
358
356
353
354
353
355
355
355
356
358

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 OK
07 OK
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)

73
74
73
90
57
60
59
52
42
30
50
75
98
99
99
100
99
97
96
99
100
100
100
100

Low Clouds (% Sky Obscured)

29
30
31
46
20
10
0
0
0
1
30
60
91
87
88
89
90
92
87
92
91
93
97
99

Medium Clouds (% Sky Obscured)

56
53
50
46
48
47
47
39
27
15
25
34
40
48
92
55
52
42
27
35
52
67
77
89

High Clouds (% Sky Obscured)

0
1
0
0
1
3
4
5
6
7
17
27
39
54
72
89
93
96
96
99
100
99
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
8
7
6

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
Very Light Rain

Precipitation Probability (%)

3
3
16
27
12
6
1
0
0
0
7
16
9
15
6
2
12
17
8
12
16
25
43
61

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
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
89
90
92
92
95
95
95
95
89
78
67
58
53
51
51
49
48
47
45
56
68
85
87

Pressure (mb)

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

Ozone (du)

364
360
362
364
362
358
356
356
355
353
354
353
352
352
352
352
352
353
353
354
353
353
353
354

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
99
98
98
99
99
100
100
100
100
100
100
100
97
95
94
90
84
77
77
78

Low Clouds (% Sky Obscured)

100
100
100
100
97
95
94
92
91
90
82
73
63
63
66
67
67
68
70
71
69
68
69
70

Medium Clouds (% Sky Obscured)

100
100
98
96
89
82
76
83
90
96
97
99
100
91
78
67
54
41
32
33
34
35
39
39

High Clouds (% Sky Obscured)

100
100
100
100
70
39
13
45
74
100
83
68
52
65
78
91
61
32
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

70
86
95
95
95
95
89
93
95
95
95
94
79
89
95
95
95
80
62
54
56
63
54
42

Precipitation Amount (mm)

0.3
0.5
0.7
0.6
0.7
0.8
0.5
0.5
0.7
1.1
0.9
0.6
0.5
0.6
0.7
0.9
0.7
0.5
0.3
0
0
0.3
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
14
13
13
13
14
13
14
14
14
14
15
14
14
14
13
13
16
16
15
16
16
16
14

Dew Point (°C)

14
14
14
14
14
15
15
15
15
15
15
15
15
15
15
14
14
14
14
14
14
14
14
14

Relative Humidity (%)

92
98
96
98
98
98
98
98
96
96
96
95
93
93
89
85
81
79
78
77
82
86
92
93

Pressure (mb)

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

Ozone (du)

354
355
358
360
362
364
365
366
367
368
369
371
374
376
382
387
393
395
397
398
395
391
387
383

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

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)

77
84
91
98
99
99
100
98
94
91
93
96
100
100
100
100
99
98
97
93
89
84

Low Clouds (% Sky Obscured)

71
69
67
67
77
86
93
86
79
74
81
90
98
93
89
86
72
58
40
47
50
50

Medium Clouds (% Sky Obscured)

36
45
56
71
72
59
55
54
49
52
53
55
56
58
61
63
62
54
50
61
72
84

High Clouds (% Sky Obscured)

3
34
64
95
96
93
94
66
40
15
21
15
3
16
36
59
70
82
95
93
89
84

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

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

Precipitation Probability (%)

22
22
23
12
18
30
41
75
95
95
91
62
23
26
27
22
24
24
18
37
50
56

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.3
0.8
0.9
0.6
0.3
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
9
9
9
9
10
11
12
14
16
18
22
26
26
28
30
27
25
22
21
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
14
14
14
13
12
12
12
13
13
13
14
14
14
14
15
15
15
14
14
15
14

Dew Point (°C)

14
14
13
13
13
13
13
13
13
13
13
13
13
14
13
13
13
13
13
13
13
14

Relative Humidity (%)

95
96
96
96
96
96
96
96
95
92
90
85
81
77
76
76
74
76
76
78
83
89

Pressure (mb)

1005
1006
1006
1005
1005
1005
1004
1004
1003
1002
1002
1001
1001
1001
1001
1000
1000
1001
1001
1002
1002
1002

Ozone (du)

379
375
372
369
366
365
363
362
361
360
358
357
356
354
353
352
351
349
348
347
347
346

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

Generated: 27/05/26 22:08:46. Forecast: 27/05/26 to 02/06/26. Timezone: UTC+2.00