Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 22

Waxing Crescent 26%

07:55

00:20

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

Sun - Rise: 06:36, Set: 18:59, Transit: 12:48. Moon - Rise: 07:55, Set: 00:20. Civil Dark: 19:32 - 06:02. Nautical Dark: 20:13 - 05:21. Astro Dark: 20:55 - 04:39

Total Clouds (% Sky Obscured)

11
8
0
0
0
100
100
100
100
100
100
65
5
24
82
92
98
100
100
100
100
100
100
97

Low Clouds (% Sky Obscured)

11
0
0
0
0
0
0
0
0
0
0
0
0
8
25
33
43
42
34
34
22
11
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
45
79
99
97
68
36
5
3
2
12
30
79
45
31
37
70
39
44

High Clouds (% Sky Obscured)

0
0
0
0
0
90
100
100
100
100
100
25
1
13
71
84
92
100
100
100
100
100
100
89

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
63
71
74
75
74
74
72
72
74
75
78
82
85
78
69
63
58
55
52
50
49
50
51

Pressure (mb)

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

Ozone (du)

395
396
402
407
410
402
392
386
375
369
373
384
388
390
386
383
380
377
372
368
365
365
362
359

Monday 23

Waxing Crescent 38%

08:34

01:48

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 Bad
16 Bad
17 Bad

Sun - Rise: 06:33, Set: 19:00, Transit: 12:48. Moon - Rise: 08:34, Set: 01:48. Civil Dark: 19:34 - 05:59. Nautical Dark: 20:14 - 05:19. Astro Dark: 20:57 - 04:36

Total Clouds (% Sky Obscured)

87
78
83
99
98
100
99
100
99
96
98
100
100
100
93
96
97
98
99
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
16
10
0
12
18
34
26
38
37
55
57
51
47
42
25
0
0

Medium Clouds (% Sky Obscured)

49
67
82
85
86
96
99
99
97
77
92
86
59
77
86
93
91
90
94
95
100
100
100
98

High Clouds (% Sky Obscured)

69
54
58
94
93
100
92
90
88
65
57
100
100
100
36
51
65
73
93
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 (%)

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)

6
5
4
4
4
4
5
6
6
6
7
8
8
9
10
11
13
15
16
16
16
16
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
58
61
63
64
67
70
71
74
76
81
81
79
75
73
70
69
66
63
63
60
58
60
63

Pressure (mb)

1021
1021
1021
1022
1022
1021
1021
1021
1021
1020
1019
1019
1019
1019
1018
1018
1018
1018
1017
1017
1016
1015
1014
1013

Ozone (du)

356
354
353
351
350
348
347
345
343
342
342
342
343
343
342
342
344
345
344
345
346
346
347
349

Tuesday 24

Waxing Crescent 35%

09:30

03:03

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 Bad
16 Bad
17 Bad

Sun - Rise: 06:31, Set: 19:02, Transit: 12:47. Moon - Rise: 09:30, Set: 03:03. Civil Dark: 19:36 - 05:57. Nautical Dark: 20:16 - 05:16. Astro Dark: 20:59 - 04:33

Total Clouds (% Sky Obscured)

100
100
70
93
87
100
89
100
100
98
100
65
92
83
98
99
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

7
0
7
0
0
10
33
77
100
98
45
52
65
70
76
87
77
68
73
76
76
75
60
50

Medium Clouds (% Sky Obscured)

79
55
58
93
87
90
82
100
75
75
100
48
85
71
44
90
64
100
100
100
100
100
100
99

High Clouds (% Sky Obscured)

100
90
49
35
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
4

ISS Passover

Visibility (miles)

9
9
9
9
9
7
4
6
9
7
8
5
5
7
8
7
8
8
8
8
1
5
6
7

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

Precipitation Probability (%)

0
0
0
1
41
95
95
53
66
95
95
92
67
71
75
85
91
76
77
74
83
83
76
61

Precipitation Amount (mm)

0
0
0
0
0
1.4
0.9
0
0.3
0.7
0.7
0.9
0.3
0.4
0.4
0.5
0.6
0.2
0.4
0.4
0.5
0.5
0.5
0.3

Wind Speed/Direction (mph)

18
19
20
21
21
23
24
24
16
20
19
18
20
19
20
20
20
21
20
19
19
18
17
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
5
6
5
4
5
5
5
4
4
2
1
-0
-1
0
1
1
0
-0
1
0
0
1

Dew Point (°C)

6
6
5
6
5
7
9
9
7
7
6
5
6
2
1
1
0
0
-0
3
3
2
2
2

Relative Humidity (%)

63
63
64
67
68
75
85
88
77
77
81
78
90
70
67
64
61
59
59
74
78
72
71
70

Pressure (mb)

1012
1011
1010
1008
1007
1005
1004
1003
1002
1001
1000
1000
1000
1000
1000
1001
1002
1002
1003
1004
1004
1005
1006
1007

Ozone (du)

353
358
366
367
371
374
379
385
390
395
408
423
429
426
430
432
432
434
431
428
426
427
428
427

Wednesday 25

First Quarter 49%

10:44

03:58

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 Bad
16 Bad
17 Bad

Sun - Rise: 06:29, Set: 19:04, Transit: 12:47. Moon - Rise: 10:44, Set: 03:58. Civil Dark: 19:38 - 05:55. Nautical Dark: 20:18 - 05:14. Astro Dark: 21:01 - 04:31

Total Clouds (% Sky Obscured)

95
86
97
98
100
97
99
96
92
88
76
73
65
60
52
45
60
80
100
94
89
84
89
94

Low Clouds (% Sky Obscured)

36
28
22
31
50
61
76
74
70
71
58
53
47
40
33
30
38
47
56
60
63
67
67
67

Medium Clouds (% Sky Obscured)

86
45
45
40
38
30
35
95
89
66
50
64
51
5
5
1
21
33
45
39
27
14
23
36

High Clouds (% Sky Obscured)

4
8
0
1
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
8
7
7
6
6
7
6
8
9
9
9
8
9
9
8
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
Light Rain
Very Light Rain
Sleet
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
Very Light Rain

Precipitation Probability (%)

48
39
33
23
34
51
55
69
69
67
68
63
59
62
52
44
31
27
41
43
40
48
45
49

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.5
0.4
0.4
0.5
0.3
0.3
0.4
0.2
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
6
6
6
6
6
5
5
5
5
5
5
5
5
6
6
7
7
7
7
7
7
7
6

Feels Like (°C)

1
1
2
1
-0
-0
-1
-1
-1
-1
-1
-0
-1
-2
0
-0
0
1
0
-0
0
-0
1
0

Dew Point (°C)

2
1
1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-3
-3
-2
-1
-2
-2
-2

Relative Humidity (%)

70
70
67
64
62
62
62
64
66
67
66
67
67
65
65
63
57
48
48
54
55
56
56
58

Pressure (mb)

1008
1009
1010
1010
1011
1011
1012
1012
1013
1013
1014
1014
1014
1015
1016
1016
1017
1018
1018
1018
1019
1019
1019
1020

Ozone (du)

426
423
423
424
427
433
433
429
430
429
425
420
416
412
403
400
392
387
382
378
376
374
370
370

Thursday 26

Waxing Gibbous 61%

12:09

04:35

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 Bad
16 Bad
17 Bad

Sun - Rise: 06:26, Set: 19:05, Transit: 12:47. Moon - Rise: 12:09, Set: 04:35. Civil Dark: 19:39 - 05:52. Nautical Dark: 20:20 - 05:11. Astro Dark: 21:03 - 04:28

Total Clouds (% Sky Obscured)

95
99
92
100
98
95
94
93
91
91
91
91
92
91
92
93
93
93
93
95
97
99
99
100

Low Clouds (% Sky Obscured)

65
59
47
42
40
44
46
60
71
87
86
85
83
75
77
79
82
86
90
93
96
99
99
100

Medium Clouds (% Sky Obscured)

52
57
60
62
59
83
87
88
83
78
77
83
89
91
92
93
88
80
74
66
58
50
57
72

High Clouds (% Sky Obscured)

0
33
67
100
67
33
0
1
0
5
4
3
4
26
35
36
33
25
20
20
21
20
30
39

ISS Passover

Visibility (miles)

8
8
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 (%)

41
43
34
22
19
11
0
4
5
4
6
8
10
24
29
34
37
37
30
30
28
24
34
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
61
62
63
63
63
63
62
63
63
64
66
66
67
70
73
76
79
82
85
85
83
82
85

Pressure (mb)

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

Ozone (du)

369
364
359
354
349
346
340
334
332
330
328
326
325
326
329
331
334
334
335
335
335
334
334
335

Friday 27

Waxing Gibbous 72%

13:36

05:00

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 Bad
16 Bad
17 Bad

Sun - Rise: 06:24, Set: 19:07, Transit: 12:46. Moon - Rise: 13:36, Set: 05:00. Civil Dark: 19:41 - 05:50. Nautical Dark: 20:22 - 05:09. Astro Dark: 21:06 - 04:25

Total Clouds (% Sky Obscured)

100
100
100
100
98
95
93
81
68
51
55
59
67
70
72
71
80
92
98
86
74
57
61
70

Low Clouds (% Sky Obscured)

100
100
100
100
89
76
65
59
49
43
42
38
42
36
31
24
26
22
18
22
26
27
39
48

Medium Clouds (% Sky Obscured)

90
67
50
32
33
34
33
23
11
0
11
21
27
37
46
56
57
68
75
59
37
17
33
48

High Clouds (% Sky Obscured)

49
48
48
45
46
46
50
34
12
4
23
44
63
70
72
71
80
92
98
70
39
8
0
0

ISS Passover

Visibility (miles)

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

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 (%)

44
44
39
39
35
29
12
18
16
1
2
2
0
1
1
0
8
5
1
3
3
3
24
41

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
93
93
93
91
91
91
91
91
90
91
90
88
86
78
69
60
57
53
50
50
51
52
62

Pressure (mb)

1020
1020
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

337
339
340
342
343
345
346
348
351
354
357
356
355
355
355
355
355
359
363
366
371
376
381
389

Saturday 28

Waxing Gibbous 82%

16:00

06:17

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

Sun - Rise: 07:22, Set: 19:09, Transit: 13:46. Moon - Rise: 16:00, Set: 06:17. Civil Dark: 19:43 - 06:48. Nautical Dark: 20:24 - 06:06. Astro Dark: 21:08 - 05:22

Total Clouds (% Sky Obscured)

79
77
76
74
59
44
28
29
29
28
33
40
47
50
53
55
66
77
89

Low Clouds (% Sky Obscured)

54
47
47
46
47
44
28
29
29
28
33
40
47
50
53
55
50
42
33

Medium Clouds (% Sky Obscured)

68
62
53
55
37
20
2
1
1
0
0
0
0
0
0
0
12
23
31

High Clouds (% Sky Obscured)

0
3
2
0
0
0
0
0
0
0
0
0
1
2
3
5
5
8
10

ISS Passover

Visibility (miles)

5
3
5
7
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

Precipitation Type

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

Precipitation Probability (%)

59
64
55
40
22
8
0
4
6
2
5
6
2
9
11
3
11
10
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
85
84
84
82
82
79
78
78
77
77
77
77
77
71
66
62
57
51

Pressure (mb)

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

Ozone (du)

396
404
413
421
430
430
430
431
423
416
408
403
397
392
391
390
389
386
383

Forecast for Leiden, Gemeente Leiden, Netherlands (52.16,4.50)

Generated: 22/03/26 17:42:56. Forecast: 22/03/26 to 28/03/26. Timezone: UTC+1.00