Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 17

New Moon 2%

06:30

21:14

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

Sun - Rise: 06:34, Set: 20:41, Transit: 13:38. Moon - Rise: 06:30, Set: 21:14. Civil Dark: 21:17 - 05:58. Nautical Dark: 22:02 - 05:12. Astro Dark: 22:55 - 04:19

Total Clouds (% Sky Obscured)

95
96
97
87
60
58
72
69
43
5
60
76
91
98
100
100
93
96
94
100
98
100
100
99

Low Clouds (% Sky Obscured)

10
10
12
5
10
27
33
5
4
5
5
5
4
4
4
4
5
0
26
45
71
64
71
67

Medium Clouds (% Sky Obscured)

55
53
69
47
38
26
43
39
32
2
46
55
75
96
100
100
93
96
89
100
98
73
60
53

High Clouds (% Sky Obscured)

95
96
92
40
7
1
1
21
3
0
1
1
78
92
91
92
21
14
3
12
15
100
9
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
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
9
7
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
17
36
55
65
54

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
0.4
0.2

Wind Speed/Direction (mph)

8
8
6
5
4
3
3
3
3
3
4
3
3
4
4
4
4
4
5
6
7
8
8
9

Chance of Frost

Temperature (°C)

19
19
18
17
15
14
13
12
11
10
10
9
9
9
9
9
10
11
13
14
15
16
15
14

Feels Like (°C)

17
17
17
16
14
13
11
10
10
9
8
7
7
7
6
7
9
9
11
12
13
13
13
11

Dew Point (°C)

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

Relative Humidity (%)

48
55
62
67
72
73
75
73
73
69
68
67
68
72
74
77
76
71
70
62
59
64
78
80

Pressure (mb)

1021
1021
1020
1021
1021
1021
1022
1022
1022
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021

Ozone (du)

359
360
361
360
361
362
364
363
361
359
359
360
360
361
362
364
368
371
371
370
372
378
383
385

Saturday 18

Waxing Crescent 6%

06:54

22:49

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

Sun - Rise: 06:32, Set: 20:42, Transit: 13:38. Moon - Rise: 06:54, Set: 22:49. Civil Dark: 21:19 - 05:55. Nautical Dark: 22:05 - 05:09. Astro Dark: 22:57 - 04:16

Total Clouds (% Sky Obscured)

91
84
74
63
55
81
45
2
34
32
27
29
34
49
71
75
33
57
81
87
84
91
94
85

Low Clouds (% Sky Obscured)

55
45
50
0
0
0
1
1
14
18
14
14
24
43
61
71
33
45
49
67
84
86
88
85

Medium Clouds (% Sky Obscured)

46
60
69
56
42
35
6
0
2
1
13
10
12
21
46
31
0
18
65
60
34
30
24
0

High Clouds (% Sky Obscured)

0
0
0
0
14
81
38
1
19
9
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
7
8

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
None

Precipitation Probability (%)

36
8
1
6
0
0
0
0
0
0
0
0
0
2
7
14
10
55
86
76
80
72
61
45

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0.4
0.6
0.4
0.4
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
8
5
5
6
6
6
5
5
5
4
4
4
4
4
4
6
6
6
5
4
4
4
4

Relative Humidity (%)

79
73
58
62
71
81
85
87
90
88
87
90
90
90
91
91
90
78
69
62
57
55
56
59

Pressure (mb)

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

Ozone (du)

383
384
383
382
383
384
387
391
397
402
407
412
415
413
416
416
415
416
416
414
413
412
414
415

Sunday 19

Waxing Crescent 5%

07:28

00:23

16 Bad
17 Bad
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 Good
09 OK
10 OK
11 OK
12 Bad
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:30, Set: 20:44, Transit: 13:38. Moon - Rise: 07:28, Set: 00:23. Civil Dark: 21:21 - 05:53. Nautical Dark: 22:07 - 05:07. Astro Dark: 23:00 - 04:12

Total Clouds (% Sky Obscured)

85
79
64
71
77
66
57
54
53
66
71
59
48
49
49
48
1
43
32
36
60
51
69
85

Low Clouds (% Sky Obscured)

72
79
64
71
74
66
57
51
53
59
68
59
48
49
49
48
1
43
32
36
47
35
44
54

Medium Clouds (% Sky Obscured)

31
0
0
0
4
0
0
0
0
5
0
0
0
0
0
0
0
0
0
0
9
4
19
35

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

Very Light Rain
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 (%)

46
29
7
0
0
0
0
0
0
0
0
1
1
1
2
2
2
4
5
16
7
6
12
20

Precipitation Amount (mm)

0.2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
8
8
7
7
7
6
6
5
5
4
4
4
4
3
3
5
7
9
9
9
9
10
10

Dew Point (°C)

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

Relative Humidity (%)

57
54
54
57
66
73
82
87
90
88
88
89
89
88
88
88
80
73
64
58
58
59
55
55

Pressure (mb)

1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

414
412
410
409
410
409
409
407
406
405
404
406
407
406
406
406
405
406
408
412
414
416
418
420

Monday 20

Waxing Crescent 14%

08:20

01:46

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

Sun - Rise: 06:28, Set: 20:46, Transit: 13:38. Moon - Rise: 08:20, Set: 01:46. Civil Dark: 21:23 - 05:51. Nautical Dark: 22:09 - 05:04. Astro Dark: 23:03 - 04:09

Total Clouds (% Sky Obscured)

100
76
100
100
98
99
71
61
59
57
53
44
40
36
32
25
20
15
10
27
43
60
48
40

Low Clouds (% Sky Obscured)

68
66
65
64
67
66
56
45
41
37
26
14
0
0
0
0
0
0
0
8
15
23
15
7

Medium Clouds (% Sky Obscured)

55
55
55
45
44
43
47
37
28
24
25
23
23
22
19
17
14
10
7
18
27
34
33
29

High Clouds (% Sky Obscured)

0
20
23
25
13
5
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 (%)

23
22
26
17
9
7
1
2
1
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)

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

Chance of Frost

Temperature (°C)

12
12
12
11
10
9
8
7
6
6
6
5
5
4
4
4
4
6
8
10
11
12
14
14

Feels Like (°C)

9
9
10
7
7
6
6
5
4
5
4
4
3
3
2
2
2
4
5
7
8
8
10
10

Dew Point (°C)

4
4
3
6
7
6
5
5
5
5
4
4
4
3
2
2
1
1
1
1
-2
-4
-2
-1

Relative Humidity (%)

58
58
56
74
81
80
81
88
90
90
90
91
94
93
88
86
80
69
60
52
38
32
34
34

Pressure (mb)

1022
1022
1022
1022
1023
1023
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1026
1026
1026
1026
1025
1025
1025

Ozone (du)

421
421
420
420
420
419
418
413
409
405
404
405
405
406
406
405
401
399
400
402
400
397
392
389

Tuesday 21

Waxing Crescent 23%

09:31

02:50

16 OK
17 OK
18 OK
19 OK
20 Good
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 Good
12 Good
13 Good
14 Good
15 Good

Sun - Rise: 06:26, Set: 20:47, Transit: 13:37. Moon - Rise: 09:31, Set: 02:50. Civil Dark: 21:24 - 05:49. Nautical Dark: 22:11 - 05:01. Astro Dark: 23:06 - 04:06

Total Clouds (% Sky Obscured)

30
18
23
35
3
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
5

Low Clouds (% Sky Obscured)

0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
5

Medium Clouds (% Sky Obscured)

24
16
8
2
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2

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
13
11
11
11
10
9
8
8
8
7
7
6
6
6
6
6
5
6
6
7
8
8
9

Chance of Frost

Temperature (°C)

14
15
14
13
11
9
8
6
6
5
4
4
4
4
4
4
6
8
10
12
13
15
16
16

Feels Like (°C)

11
12
12
10
6
7
5
4
4
3
3
3
3
4
4
4
6
6
7
8
9
10
11
17

Dew Point (°C)

0
1
3
4
3
2
2
2
1
1
2
2
2
3
3
3
4
4
5
6
5
5
5
5

Relative Humidity (%)

37
39
47
54
56
61
69
71
74
75
82
88
89
91
94
94
90
78
71
63
57
51
47
46

Pressure (mb)

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

Ozone (du)

387
386
388
392
396
397
395
392
392
393
395
393
393
395
400
409
413
410
406
403
402
400
399
400

Wednesday 22

Waxing Crescent 34%

10:54

03:33

16 Good
17 OK
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 OK
07 OK
08 OK
09 OK
10 Good
11 OK
12 OK
13 Bad
14 Bad
15 Bad

Sun - Rise: 06:24, Set: 20:49, Transit: 13:37. Moon - Rise: 10:54, Set: 03:33. Civil Dark: 21:26 - 05:46. Nautical Dark: 22:14 - 04:59. Astro Dark: 23:09 - 04:02

Total Clouds (% Sky Obscured)

9
19
26
29
21
17
14
6
3
1
11
12
14
18
21
28
26
19
8
22
37
56
60
61

Low Clouds (% Sky Obscured)

9
19
26
29
21
17
14
6
3
1
7
10
12
8
9
11
7
2
0
0
0
0
2
4

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
14
31
47
52
49

High Clouds (% Sky Obscured)

3
8
9
6
5
3
1
0
0
0
0
0
0
0
0
0
1
3
4
7
10
13
9
5

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
2
2
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)

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

Chance of Frost

Temperature (°C)

16
16
15
14
13
11
10
8
8
7
6
6
5
5
6
6
7
9
11
13
13
14
15
15

Feels Like (°C)

15
15
15
15
15
9
8
8
8
7
7
4
4
5
5
4
4
7
8
9
10
10
11
13

Dew Point (°C)

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

Relative Humidity (%)

46
46
51
56
62
68
74
82
82
82
83
83
85
85
83
82
81
73
66
61
60
57
55
59

Pressure (mb)

1024
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1024
1024
1023
1023

Ozone (du)

401
402
400
399
398
398
398
398
396
395
393
390
388
386
383
381
379
378
378
377
377
376
375
373

Thursday 23

Waxing Crescent 46%

12:21

04:02

16 Bad
17 Bad
18 OK
19 OK
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 OK
11 OK
12 OK
13 OK

Sun - Rise: 06:22, Set: 20:51, Transit: 13:37. Moon - Rise: 12:21, Set: 04:02. Civil Dark: 21:28 - 05:44. Nautical Dark: 22:16 - 04:56. Astro Dark: 23:12 - 03:59

Total Clouds (% Sky Obscured)

69
54
38
21
47
72
97
98
99
100
95
89
83
79
75
71
62
53
43
42
39
35

Low Clouds (% Sky Obscured)

10
21
24
21
17
17
11
16
22
32
45
52
61
65
68
70
48
27
5
5
5
10

Medium Clouds (% Sky Obscured)

46
29
16
3
5
5
9
14
19
24
18
11
5
4
2
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

2
2
2
3
26
46
62
59
47
34
24
22
15
14
10
5
9
17
24
22
21
18

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
1
1
2
2
1
3
3
1
4
5
2
6
8
7
7
4
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
12
12
12
6
6
6
6
5
5
4
6
6
6
6
6
6
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

62
67
66
68
71
69
68
68
69
71
73
71
71
70
71
73
74
70
68
65
64
61

Pressure (mb)

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

Ozone (du)

372
370
368
365
363
362
362
361
362
363
364
363
362
361
362
363
363
364
364
364
364
364

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

Generated: 17/04/26 16:08:54. Forecast: 17/04/26 to 23/04/26. Timezone: UTC+2.00