Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 24

First Quarter 58%

13:46

04:21

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

Sun - Rise: 06:20, Set: 20:53, Transit: 13:37. Moon - Rise: 13:46, Set: 04:21. Civil Dark: 21:30 - 05:42. Nautical Dark: 22:18 - 04:53. Astro Dark: 23:15 - 03:55

Total Clouds (% Sky Obscured)

8
14
24
21
0
0
26
42
68
60
40
32
39
56
64
68
54
48
47
31
0
0
1
1

Low Clouds (% Sky Obscured)

8
14
24
20
0
0
26
42
64
57
40
31
39
56
64
68
54
48
47
27
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)

2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
5
0
0
1
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
9
24
48
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
6
5
4
4
4
3
3
3
3
3
3
3
5
5
6
7
8
9
10
11

Chance of Frost

Temperature (°C)

14
12
10
8
7
6
5
5
4
4
4
3
3
2
4
7
9
11
13
14
16
16
16
16

Feels Like (°C)

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

Dew Point (°C)

3
3
4
4
5
4
4
3
3
2
2
1
1
0
1
2
1
0
-1
-1
-1
-1
-1
-1

Relative Humidity (%)

46
52
65
77
85
88
90
89
89
89
88
88
88
86
79
71
59
47
39
34
32
31
31
32

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020

Ozone (du)

364
360
358
356
358
362
366
371
378
384
390
387
378
362
359
359
359
359
360
361
359
356
356
357

Saturday 25

Waxing Gibbous 68%

15:07

04:36

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

Sun - Rise: 06:18, Set: 20:54, Transit: 13:37. Moon - Rise: 15:07, Set: 04:36. Civil Dark: 21:32 - 05:40. Nautical Dark: 22:20 - 04:51. Astro Dark: 23:19 - 03:52

Total Clouds (% Sky Obscured)

3
6
9
40
62
73
53
74
68
83
75
84
47
38
25
41
67
62
51
33
15
8
26
4

Low Clouds (% Sky Obscured)

0
0
0
30
38
47
53
23
31
46
14
71
44
38
25
41
44
38
35
26
0
3
23
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
14
33
19
8
0
0
0
1

High Clouds (% Sky Obscured)

1
5
7
14
30
32
17
74
68
83
75
84
9
1
2
5
51
32
9
1
10
8
13
4

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

Chance of Frost

Temperature (°C)

14
13
12
9
8
7
7
7
6
6
6
5
5
5
6
8
9
10
12
13
14
15
15
15

Feels Like (°C)

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

Dew Point (°C)

1
3
5
5
6
5
5
5
5
5
5
4
4
3
3
2
2
2
1
1
1
1
1
1

Relative Humidity (%)

39
48
62
76
84
87
87
90
93
93
94
93
93
89
79
69
61
54
49
45
41
39
37
39

Pressure (mb)

1020
1021
1021
1022
1022
1023
1023
1024
1024
1024
1025
1025
1026
1026
1027
1028
1028
1028
1028
1027
1027
1027
1026
1026

Ozone (du)

359
363
365
365
364
364
363
363
364
366
366
367
367
368
369
371
375
377
376
375
375
373
373
372

Sunday 26

Waxing Gibbous 78%

16:25

04:48

18 Good
19 Good
20 Good
21 Good
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

Sun - Rise: 06:16, Set: 20:56, Transit: 13:37. Moon - Rise: 16:25, Set: 04:48. Civil Dark: 21:34 - 05:37. Nautical Dark: 22:23 - 04:48. Astro Dark: 23:22 - 03:48

Total Clouds (% Sky Obscured)

0
0
0
7
59
79
99
100
100
97
100
100
100
95
100
100
100
100
74
78
86
93
100
95

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
16

Medium Clouds (% Sky Obscured)

0
0
0
7
50
25
1
39
70
86
82
92
80
95
100
100
98
62
74
78
86
93
100
89

High Clouds (% Sky Obscured)

0
0
0
3
37
78
99
100
100
96
98
100
99
53
100
100
100
100
31
25
47
77
100
75

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
1
5
6
6
20

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)

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

Chance of Frost

Temperature (°C)

14
13
11
9
8
7
6
6
5
5
4
4
4
4
5
7
9
11
13
14
15
16
16
15

Feels Like (°C)

10
9
8
5
5
4
3
3
2
2
1
1
1
1
2
4
6
8
10
11
12
12
12
12

Dew Point (°C)

3
4
5
4
4
4
3
2
2
2
1
1
1
1
2
2
2
2
1
1
1
0
0
1

Relative Humidity (%)

47
55
64
70
74
78
78
79
80
79
79
82
83
82
76
69
62
53
44
39
36
35
35
37

Pressure (mb)

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

Ozone (du)

372
372
371
370
370
371
372
372
373
375
375
374
373
373
375
375
377
378
378
379
380
385
389
395

Monday 27

Waxing Gibbous 86%

17:40

04:58

18 Bad
19 Bad
20 Bad
21 Bad
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 OK
16 OK
17 OK

Sun - Rise: 06:14, Set: 20:58, Transit: 13:36. Moon - Rise: 17:40, Set: 04:58. Civil Dark: 21:36 - 05:35. Nautical Dark: 22:25 - 04:46. Astro Dark: 23:25 - 03:44

Total Clouds (% Sky Obscured)

90
87
89
89
90
93
96
99
95
93
90
88
86
85
80
72
59
61
58
49
44
42
37
33

Low Clouds (% Sky Obscured)

32
48
50
55
58
63
71
83
82
79
75
74
73
71
68
66
59
61
58
49
44
42
37
33

Medium Clouds (% Sky Obscured)

86
83
50
55
68
79
32
39
32
28
23
23
19
20
15
10
5
5
16
0
0
0
0
0

High Clouds (% Sky Obscured)

15
4
80
85
70
50
45
40
23
5
5
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
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 (%)

23
20
25
26
26
21
18
13
9
4
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
7
7
7
8
8
9
9
9
9
11
12
13
13
13
13
13
14
14

Chance of Frost

Temperature (°C)

15
14
12
10
9
8
8
7
7
6
6
6
6
6
7
8
10
11
13
14
15
15
16
16

Feels Like (°C)

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

Dew Point (°C)

2
4
5
5
5
5
4
4
4
4
4
3
2
1
2
2
2
2
2
3
3
3
4
4

Relative Humidity (%)

42
51
61
69
74
78
78
81
84
84
85
79
75
72
70
67
59
52
48
46
44
43
44
46

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1025
1024
1024
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1026
1025
1025
1025

Ozone (du)

399
400
408
413
415
417
422
426
425
424
426
427
429
430
431
433
431
428
426
422
418
414
409
405

Tuesday 28

Waxing Gibbous 92%

No Rise

05:08

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

Sun - Rise: 06:12, Set: 20:59, Transit: 13:36. Moon - Rise: No Rise, Set: 05:08. Civil Dark: 21:38 - 05:33. Nautical Dark: 22:27 - 04:43. Astro Dark: 23:29 - 03:41

Total Clouds (% Sky Obscured)

31
25
15
9
0
0
0
0
2
4
5
4
2
0
23
13
2
26
50
74
68
58
49
34

Low Clouds (% Sky Obscured)

31
25
15
9
0
0
0
0
0
0
0
0
0
0
23
13
2
21
38
46
33
27
23
18

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
3
4
2
1
0
0
0
0
5
16
28
28
21
17
10

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
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)

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

Chance of Frost

Temperature (°C)

16
15
13
12
10
9
8
7
6
6
5
5
5
6
7
10
12
14
16
17
18
18
18
18

Feels Like (°C)

13
12
11
9
7
6
6
5
5
4
4
4
4
4
5
6
7
8
9
10
10
16
16
15

Dew Point (°C)

6
6
6
6
6
5
5
5
4
4
4
4
4
4
4
5
5
6
6
6
6
6
6
6

Relative Humidity (%)

51
55
62
68
73
77
82
85
87
88
90
91
91
91
82
73
64
57
52
48
44
44
44
45

Pressure (mb)

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

Ozone (du)

402
399
396
395
393
390
388
386
386
385
384
383
382
382
381
381
380
380
379
379
379
380
380
380

Wednesday 29

Waxing Gibbous 97%

18:55

05:19

18 OK
19 OK
20 OK
21 Good
22 Good
23 Good
00 Good
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 Bad
14 Bad
15 Bad
16 Bad
17 OK

Sun - Rise: 06:10, Set: 21:01, Transit: 13:36. Moon - Rise: 18:55, Set: 05:19. Civil Dark: 21:40 - 05:31. Nautical Dark: 22:30 - 04:40. Astro Dark: 23:32 - 03:37

Total Clouds (% Sky Obscured)

25
18
14
9
4
3
2
0
0
0
0
1
2
2
5
8
13
25
37
51
49
45
47
36

Low Clouds (% Sky Obscured)

15
13
10
9
4
2
1
0
0
0
0
0
0
0
1
1
3
3
4
3
6
9
19
18

Medium Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
10
22
32
26
15
6
5

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

17
17
16
14
13
12
11
10
10
9
8
7
7
8
8
11
13
16
17
18
19
20
20
20

Feels Like (°C)

16
15
16
13
13
13
12
11
11
8
7
7
6
6
6
8
8
9
11
12
12
18
17
16

Dew Point (°C)

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

Relative Humidity (%)

50
53
58
62
66
71
73
74
77
78
78
79
77
74
73
65
58
52
48
43
39
39
40
40

Pressure (mb)

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

Ozone (du)

381
381
382
382
381
381
381
381
381
382
382
383
384
385
385
386
387
387
389
390
392
393
393
393

Thursday 30

Waxing Gibbous 99%

20:10

05:32

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

Sun - Rise: 06:08, Set: 21:03, Transit: 13:36. Moon - Rise: 20:10, Set: 05:32. Civil Dark: 21:41 - 05:29. Nautical Dark: 22:32 - 04:38. Astro Dark: 23:35 - 03:33

Total Clouds (% Sky Obscured)

26
14
17
20
24
20
17
18
19
15
10
19
29
38
40
41
43
45
44
43

Low Clouds (% Sky Obscured)

16
8
7
4
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
6

Medium Clouds (% Sky Obscured)

4
2
3
3
5
3
2
0
0
0
0
5
9
12
14
15
16
34
44
43

High Clouds (% Sky Obscured)

0
0
6
11
16
20
17
18
19
15
10
19
29
38
40
39
40
40
30
30

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
15
22
29

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
17
18
14
14
15
14
14
13
8
8
8
8
8
8
9
10
11
12
12

Dew Point (°C)

7
7
8
7
7
6
6
5
5
5
5
5
6
6
6
7
7
8
10
12

Relative Humidity (%)

45
50
56
58
60
63
64
65
65
66
66
66
67
68
70
64
59
55
63
71

Pressure (mb)

1023
1023
1023
1023
1023
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022

Ozone (du)

393
393
392
393
393
393
392
391
390
389
388
388
387
386
385
383
380
378
381
384

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

Generated: 24/04/26 18:18:51. Forecast: 24/04/26 to 30/04/26. Timezone: UTC+2.00