Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 22

Waxing Crescent 5%

11:18

18:32

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad

Sun - Rise: 08:49, Set: 16:28, Transit: 12:39. Moon - Rise: 11:18, Set: 18:32. Civil Dark: 17:10 - 08:07. Nautical Dark: 17:54 - 07:23. Astro Dark: 18:36 - 06:41

Total Clouds (% Sky Obscured)

100
100
100
99
88
87
93
90
89
92
86
71
76
85
90
91
77
78
84
64
57
53
50
56

Low Clouds (% Sky Obscured)

70
55
70
77
82
78
84
84
86
84
83
71
74
85
90
91
77
78
84
64
57
53
50
56

Medium Clouds (% Sky Obscured)

11
14
1
1
0
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
60
90
58
49
45
27
33
31
36
22
11
20
15
12
7
1
1
1
2
1
3
1

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
11
11
12
13
13
13
13
13
13
13
14
14
14
14
15
16
15
16
17
17
17
17
17

Chance of Frost

Temperature (°C)

6
6
6
6
6
6
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
4
4
4
3
4
4
4
3
3
3
3
3
3
3
3
2
2
2
2

Relative Humidity (%)

78
81
83
85
85
86
88
88
88
90
90
90
89
89
89
89
88
88
88
86
83
82
80
79

Pressure (mb)

1012
1012
1012
1013
1013
1014
1014
1015
1015
1015
1015
1015
1016
1016
1016
1016
1017
1018
1018
1019
1020
1020
1021
1021

Ozone (du)

343
344
346
348
350
353
357
358
359
357
356
355
355
354
353
352
352
349
348
349
346
345
346
347

Tuesday 23

Waxing Crescent 12%

11:33

19:51

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

Sun - Rise: 08:49, Set: 16:29, Transit: 12:39. Moon - Rise: 11:33, Set: 19:51. Civil Dark: 17:10 - 08:08. Nautical Dark: 17:54 - 07:23. Astro Dark: 18:36 - 06:42

Total Clouds (% Sky Obscured)

56
56
53
60
52
46
37
35
39
44
19
11
1
9
29
56
62
57
53
63
33
44
31
21

Low Clouds (% Sky Obscured)

56
56
53
60
52
46
37
35
39
44
19
11
0
9
29
56
62
57
53
63
33
44
31
21

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)

1
1
1
5
0
1
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)

18
18
18
18
18
18
18
18
18
18
18
18
19
19
19
18
18
18
18
18
18
17
18
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
80
80
77
76
76
76
79
79
81
80
77
77
77
78
77
74
74
73
69
63
57
54

Pressure (mb)

1021
1022
1023
1024
1025
1026
1026
1027
1028
1029
1029
1030
1031
1031
1031
1032
1033
1033
1034
1035
1035
1035
1035
1034

Ozone (du)

346
344
341
342
344
347
347
349
351
355
359
363
368
373
373
367
359
356
355
353
355
355
356
356

Wednesday 24

Waxing Crescent 19%

11:46

21:11

15 OK
16 OK
17 Good
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 Good
12 Good
13 Good
14 Good

Sun - Rise: 08:49, Set: 16:29, Transit: 12:40. Moon - Rise: 11:46, Set: 21:11. Civil Dark: 17:11 - 08:08. Nautical Dark: 17:55 - 07:24. Astro Dark: 18:37 - 06:42

Total Clouds (% Sky Obscured)

25
38
11
28
37
15
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

25
38
11
28
37
15
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)

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)

18
18
19
19
20
20
20
21
21
20
20
20
20
21
20
20
20
20
20
20
19
19
19
19

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
56
59
60
63
62
58
57
56
53
52
49
47
45
45
43
41
40
38
37
36
35
34
35

Pressure (mb)

1034
1034
1034
1034
1035
1034
1034
1034
1034
1034
1034
1034
1034
1033
1033
1033
1033
1033
1033
1034
1033
1033
1032
1032

Ozone (du)

355
355
356
357
356
355
356
359
359
360
360
359
359
358
354
351
348
347
342
340
337
334
330
329

Thursday 25

Waxing Crescent 28%

11:56

22:30

15 Good
16 Good
17 Good
18 Good
19 Good
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 OK
14 Good

Sun - Rise: 08:49, Set: 16:30, Transit: 12:40. Moon - Rise: 11:56, Set: 22:30. Civil Dark: 17:11 - 08:08. Nautical Dark: 17:56 - 07:24. Astro Dark: 18:37 - 06:42

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
14
2

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)

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)

19
18
19
19
19
18
17
16
15
15
14
13
13
12
13
13
13
13
13
14
14
14
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

35
36
37
38
39
41
42
45
47
49
51
53
54
56
56
58
57
57
57
55
53
50
46
43

Pressure (mb)

1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032
1031
1032
1032
1032
1032
1032
1032
1032
1032
1032

Ozone (du)

328
327
329
334
336
337
334
333
334
332
330
328
325
323
319
317
314
311
310
310
310
310
309
309

Friday 26

Waxing Crescent 38%

12:07

23:50

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

Sun - Rise: 08:50, Set: 16:31, Transit: 12:41. Moon - Rise: 12:07, Set: 23:50. Civil Dark: 17:12 - 08:08. Nautical Dark: 17:56 - 07:24. Astro Dark: 18:38 - 06:42

Total Clouds (% Sky Obscured)

2
4
4
35
47
60
82
72
41
31
22
12
0
0
0
0
0
0
0
0
2
7
16
20

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
3
9

Medium Clouds (% Sky Obscured)

0
0
0
1
39
60
81
66
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
3
7
10
19
29
31
22
12
0
0
0
0
0
0
0
0
2
7
9
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
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
13
13
13
13
12
12
11
11
10
10
9
9
9
8
8
8
7
6
7
7
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-11
-11
-10
-10
-9
-9
-8
-7
-6
-4
-2
-1
0
0
1
1
1
1
2
2
3
4
3

Relative Humidity (%)

39
39
40
42
44
45
45
48
53
61
69
77
84
91
93
94
96
94
94
96
93
91
88
86

Pressure (mb)

1032
1032
1032
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1035
1035
1035
1035
1035
1035
1035
1035

Ozone (du)

307
307
306
305
306
304
303
302
299
297
296
296
295
294
294
293
293
292
292
292
292
292
293
293

Saturday 27

First Quarter 49%

12:18

01:12

15 OK
16 OK
17 OK
18 OK
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

Sun - Rise: 08:50, Set: 16:32, Transit: 12:41. Moon - Rise: 12:18, Set: 01:12. Civil Dark: 17:13 - 08:08. Nautical Dark: 17:57 - 07:24. Astro Dark: 18:39 - 06:43

Total Clouds (% Sky Obscured)

27
33
36
41
45
49
54
69
77
85
87
88
90
88
88
86
88
89
89
87
80
84
80
75

Low Clouds (% Sky Obscured)

16
24
31
35
40
45
50
66
77
85
87
88
90
88
88
86
88
89
89
86
80
84
80
75

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)

16
11
9
2
2
2
1
1
0
0
0
0
0
0
0
0
14
28
42
59
73
84
80
70

ISS Passover

Visibility (miles)

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

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
4
4
4
4
2
2
1
1
1
1
1
1
-0
-1
-0
0
-0
0
1
1
0
-1
2

Dew Point (°C)

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

Relative Humidity (%)

85
83
85
86
91
88
88
88
83
79
75
75
75
76
78
79
82
83
88
93
88
82
76
77

Pressure (mb)

1035
1034
1034
1034
1034
1034
1034
1033
1033
1032
1032
1032
1031
1031
1031
1031
1031
1032
1033
1033
1034
1034
1034
1034

Ozone (du)

292
292
293
294
295
295
295
294
295
295
295
295
295
296
297
298
299
299
298
298
298
299
299
300

Sunday 28

Waxing Gibbous 61%

12:31

02:37

15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
21 OK
22 OK
23 OK
00 Good
01 Good
02 Good
03 Good
04 OK
05 OK
06 Bad

Sun - Rise: 08:50, Set: 16:33, Transit: 12:42. Moon - Rise: 12:31, Set: 02:37. Civil Dark: 17:14 - 08:09. Nautical Dark: 17:58 - 07:24. Astro Dark: 18:40 - 06:43

Total Clouds (% Sky Obscured)

71
63
49
36
31
33
34
30
23
17
13
10
6
21
34
53

Low Clouds (% Sky Obscured)

70
62
49
36
31
33
34
30
20
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

High Clouds (% Sky Obscured)

60
41
24
9
6
4
3
5
5
4
3
2
1
4
8
18

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

3
3
3
3
2
2
2
2
2
2
2
1
1
1
1
1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
77
76
73
74
73
74
76
78
80
81
83
83
83
83

Pressure (mb)

1034
1035
1035
1035
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036
1036

Ozone (du)

302
303
305
306
308
307
306
306
304
303
301
300
298
297
296
296

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

Generated: 22/12/25 15:12:11. Forecast: 22/12/25 to 28/12/25. Timezone: UTC+1.00