Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 29

Waxing Crescent 5%

06:29

00:19

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

Sun - Rise: 06:10, Set: 21:03, Transit: 13:36. Moon - Rise: 06:29, Set: 00:19. Civil Dark: 21:42 - 05:29. Nautical Dark: 22:33 - 04:37. Astro Dark: 23:37 - 03:32

Total Clouds (% Sky Obscured)

48
56
56
36
19
10
14
17
17
14
20
12
43
100
100
96
81
42
22
52
33
26
49
29

Low Clouds (% Sky Obscured)

21
0
0
0
0
0
6
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

42
56
27
22
15
6
7
17
17
14
20
12
43
99
100
96
81
42
22
51
25
17
46
27

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 (%)

23
45
54
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)

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

Chance of Frost

Temperature (°C)

6
7
9
12
15
16
17
18
19
19
19
19
19
18
16
14
14
13
13
12
12
11
11
11

Feels Like (°C)

7
5
8
11
14
15
16
17
18
17
17
17
17
16
14
13
12
11
11
11
10
10
9
9

Dew Point (°C)

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

Relative Humidity (%)

85
81
76
67
61
58
55
52
51
51
52
54
57
63
73
79
84
87
87
89
88
87
85
85

Pressure (mb)

1027
1027
1028
1028
1028
1028
1028
1028
1028
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1025
1025

Ozone (du)

323
323
323
324
323
323
323
322
322
322
322
322
321
321
320
320
319
319
319
318
318
318
319
319

Wednesday 30

Waxing Crescent 12%

07:05

01:40

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

Sun - Rise: 06:08, Set: 21:05, Transit: 13:36. Moon - Rise: 07:05, Set: 01:40. Civil Dark: 21:44 - 05:27. Nautical Dark: 22:35 - 04:35. Astro Dark: 23:41 - 03:28

Total Clouds (% Sky Obscured)

30
73
96
100
100
98
79
44
15
8
17
25
26
24
16
10
24
11
10
11
18
8
17
5

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

High Clouds (% Sky Obscured)

30
73
96
100
100
97
76
31
8
4
2
0
1
5
2
0
15
2
5
6
4
2
16
3

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
2
9
12
7
2
0
0
0
1
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)

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

Chance of Frost

Temperature (°C)

10
11
12
14
16
17
19
20
21
21
21
21
21
20
18
15
14
13
13
13
13
13
12
12

Feels Like (°C)

11
11
12
13
14
16
17
18
19
21
21
20
19
17
16
13
13
12
12
12
11
11
12
13

Dew Point (°C)

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

Relative Humidity (%)

88
87
80
75
70
65
62
58
56
53
52
52
55
62
70
73
79
87
89
90
90
89
89
86

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1021

Ozone (du)

319
320
320
321
322
322
324
324
325
325
325
327
328
327
327
327
328
329
330
329
329
330
331
331

Thursday 1

Waxing Crescent 20%

07:59

02:39

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

Sun - Rise: 06:06, Set: 21:06, Transit: 13:36. Moon - Rise: 07:59, Set: 02:39. Civil Dark: 21:46 - 05:25. Nautical Dark: 22:38 - 04:32. Astro Dark: 23:45 - 03:24

Total Clouds (% Sky Obscured)

2
3
17
9
3
0
0
30
48
49
79
100
100
31
41
64
100
94
100
82
70
58
45
51

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
27
33
29
21
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
1
18
3
3
65
76
100
56
37
31
29
36

High Clouds (% Sky Obscured)

0
1
2
1
3
0
0
1
5
21
63
100
100
31
41
64
100
57
96
36
24
14
6
6

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
16
21
5
3
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
5
5
5
5
5
5
6
9
10
8
6
5
4
4
4
4
5
6
5
5
5

Chance of Frost

Temperature (°C)

12
12
14
16
18
21
22
24
25
25
25
24
23
22
20
17
16
16
14
14
14
14
14
14

Feels Like (°C)

12
12
14
16
18
22
23
24
25
24
23
21
21
21
19
16
15
14
13
13
14
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

86
81
75
67
60
54
48
46
43
42
45
49
51
59
68
70
68
65
69
69
71
82
83
87

Pressure (mb)

1021
1020
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1016
1015

Ozone (du)

330
330
330
330
330
330
335
335
333
332
332
332
331
331
331
332
332
332
333
333
332
329
329
330

Friday 2

Waxing Crescent 30%

09:10

03:17

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

Sun - Rise: 06:04, Set: 21:08, Transit: 13:36. Moon - Rise: 09:10, Set: 03:17. Civil Dark: 21:48 - 05:22. Nautical Dark: 22:40 - 04:29. Astro Dark: 23:49 - 03:20

Total Clouds (% Sky Obscured)

62
75
73
59
55
36
22
5
7
17
15
9
10
2
10
19
36
19
10
1
3
7
25
31

Low Clouds (% Sky Obscured)

0
0
0
0
18
10
3
3
5
10
11
5
4
0
10
19
30
19
10
0
0
0
0
0

Medium Clouds (% Sky Obscured)

39
40
73
54
22
15
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

26
52
49
18
2
0
9
2
0
5
5
0
0
0
0
0
0
0
0
0
1
3
8
4

ISS Passover

Visibility (miles)

9
9
9
9
4
8
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
3
2
42
20
20
7
2
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0.3
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
5
6
7
7
8
8
8
9
8
9
9
9
8
7
6
5
5
4
2
2
3

Chance of Frost

Temperature (°C)

14
14
15
16
18
19
20
20
21
21
20
19
18
16
14
12
11
10
10
9
9
8
8
7

Feels Like (°C)

14
14
14
14
17
18
19
19
19
19
17
16
14
13
13
11
10
8
10
9
9
9
8
6

Dew Point (°C)

12
13
13
13
15
15
14
13
12
11
11
10
9
9
9
9
9
8
8
7
6
6
6
5

Relative Humidity (%)

89
90
87
82
82
78
71
61
57
55
56
56
58
63
70
80
84
87
88
88
85
84
85
87

Pressure (mb)

1015
1016
1016
1016
1017
1017
1018
1018
1018
1018
1018
1018
1019
1019
1019
1020
1020
1021
1021
1020
1020
1020
1020
1020

Ozone (du)

333
337
339
342
346
357
355
351
348
352
353
353
353
352
350
350
351
352
353
354
354
353
353
353

Saturday 3

Waxing Crescent 41%

10:33

03:42

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

Sun - Rise: 06:02, Set: 21:10, Transit: 13:36. Moon - Rise: 10:33, Set: 03:42. Civil Dark: 21:50 - 05:20. Nautical Dark: 22:43 - 04:27. Astro Dark: 23:52 - 03:15

Total Clouds (% Sky Obscured)

3
3
7
9
13
32
51
65
67
73
62
65
65
64
69
64
49
31
17
0
7
14
19
36

Low Clouds (% Sky Obscured)

0
0
2
5
7
16
26
35
37
40
42
35
28
21
58
59
49
31
15
0
5
9
12
31

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
4
9
12
14
14
16
3
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
4
7
11
32
51
65
67
73
62
64
65
64
0
0
1
1
2
0
5
9
12
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 (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
1
4
3
0
3
5
2
8

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

Chance of Frost

Temperature (°C)

7
8
10
12
14
15
16
17
17
16
16
16
15
13
12
11
10
9
8
7
6
6
6
6

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
82
72
60
50
48
50
55
57
52
49
56
58
62
72
78
84
90
90
90
91
90
90
91

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1017
1017
1017
1018
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

353
354
356
356
357
359
363
362
360
359
359
358
356
356
357
358
359
360
361
362
364
366
368
370

Sunday 4

First Quarter 52%

11:56

03:59

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
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 05:59, Set: 21:11, Transit: 13:36. Moon - Rise: 11:56, Set: 03:59. Civil Dark: 21:52 - 05:18. Nautical Dark: 22:45 - 04:24. Astro Dark: 23:57 - 03:11

Total Clouds (% Sky Obscured)

53
70
73
75
78
75
76
77
74
78
78
72
69
59
64
66
70
71
68
67
71
78
88
82

Low Clouds (% Sky Obscured)

50
69
73
75
78
75
76
77
74
74
71
70
66
59
64
66
70
71
68
67
71
78
88
81

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
5
10
11
9
10
7
4
0
0
1
1
0
0
0
0
0
0
4

High Clouds (% Sky Obscured)

8
5
23
39
49
50
41
40
40
30
15
10
10
5
4
3
2
4
3
3
2
1
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 (%)

10
4
9
9
4
6
6
2
3
3
1
5
6
1
6
8
3
9
18
15
19
32
18
13

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
75
68
68
67
66
64
61
60
61
61
61
62
61
61
60
59
57
59
60
61
60
57
57

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017
1017
1017
1017
1017
1017
1017
1017

Ozone (du)

371
371
371
371
370
369
370
371
372
372
372
372
372
373
373
375
377
379
379
379
379
381
383
384

Monday 5

Waxing Gibbous 62%

13:17

04:11

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 OK
22 OK
23 OK
00 OK
01 Good

Sun - Rise: 05:57, Set: 21:13, Transit: 13:36. Moon - Rise: 13:17, Set: 04:11. Civil Dark: 21:54 - 05:16. Nautical Dark: 22:48 - 04:22. Astro Dark: 00:01 - 03:06

Total Clouds (% Sky Obscured)

77
75
87
93
98
96
95
93
89
83
78
67
55
43
37
30
25
23
16
9

Low Clouds (% Sky Obscured)

70
59
67
78
88
76
65
53
55
57
59
49
37
27
18
9
0
0
0
0

Medium Clouds (% Sky Obscured)

7
7
15
21
32
30
28
26
22
20
18
12
6
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

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

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 (%)

22
9
15
16
13
14
15
14
15
16
12
11
8
4
12
15
14
13
10
4

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

59
59
60
60
59
59
58
57
56
57
57
58
60
62
66
69
73
75
77
76

Pressure (mb)

1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019

Ozone (du)

388
391
395
392
388
385
383
382
380
379
379
378
376
374
373
373
373
373
374
376

Forecast for Katwoude, Gemeente Waterland, Netherlands (52.47,5.07)

Generated: 29/04/25 06:42:23. Forecast: 29/04/25 to 05/05/25. Timezone: UTC+2.00