Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 3%

07:47

14:38

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:44, Set: 16:28, Transit: 12:36. Moon - Rise: 07:47, Set: 14:38. Civil Dark: 17:09 - 08:03. Nautical Dark: 17:53 - 07:19. Astro Dark: 18:35 - 06:38

Total Clouds (% Sky Obscured)

100
88
100
100
100
99
94
95
97
100
94
96
95
88
100
99
98
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

53
46
33
0
19
20
41
59
96
98
86
83
91
78
100
77
78
38
27
63
43
84
75
83

Medium Clouds (% Sky Obscured)

80
88
41
59
88
79
88
89
83
71
41
34
31
34
34
39
94
98
98
98
100
100
100
100

High Clouds (% Sky Obscured)

13
88
100
100
100
57
30
24
8
10
30
52
51
18
71
69
79
100
100
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
Light Rain

Precipitation Probability (%)

0
0
0
0
2
9
24
23
15
7
5
3
0
1
4
0
3
21
10
3
8
15
44
78

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
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
81
76
70
74
73
71
75
81
81
78
78
78
80
77
75
72
71
69
65
62
63
65
68

Pressure (mb)

1016
1016
1015
1014
1014
1014
1014
1014
1014
1014
1014
1013
1012
1012
1011
1010
1010
1010
1010
1009
1010
1010
1010
1010

Ozone (du)

305
301
297
297
298
301
306
306
297
294
290
287
288
287
283
280
273
270
268
269
277
276
278
276

Friday 19

Waning Crescent 1%

08:52

15:18

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:45, Set: 16:29, Transit: 12:37. Moon - Rise: 08:52, Set: 15:18. Civil Dark: 17:10 - 08:04. Nautical Dark: 17:54 - 07:20. Astro Dark: 18:35 - 06:39

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
94
92
90
79
89
73
95
94
72
85
88
61
67
98
100

Low Clouds (% Sky Obscured)

98
85
75
91
87
86
92
88
66
48
45
3
12
12
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
99
99
99
100
94
94
96
85
83
90
78
83
73
86
87
38
51
52
38
12
36
75

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
65
17
11
16
13
54
9
76
74
21
85
69
32
50
89
95

ISS Passover

Visibility (miles)

7
5
5
5
5
8
3
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

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

Precipitation Probability (%)

95
95
95
89
85
62
49
17
9
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.7
0.9
0.7
0.5
0.6
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
14
15
15
15
14
14
11
9
9
9
10
10
10
9
8
7
7
7
7
7
7
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
84
87
88
87
88
91
88
87
87
85
83
72
71
72
72
77
82
85
87
88
90
91
93

Pressure (mb)

1011
1011
1011
1011
1011
1012
1012
1013
1015
1015
1016
1017
1017
1017
1018
1018
1019
1019
1019
1019
1020
1020
1020
1019

Ozone (du)

274
284
292
303
313
312
303
303
307
311
316
325
334
342
341
346
351
349
354
343
317
312
307
296

Saturday 20

New Moon 0%

09:46

16:13

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:45, Set: 16:29, Transit: 12:37. Moon - Rise: 09:46, Set: 16:13. Civil Dark: 17:10 - 08:04. Nautical Dark: 17:54 - 07:21. Astro Dark: 18:35 - 06:39

Total Clouds (% Sky Obscured)

100
95
98
100
100
100
100
100
100
100
99
99
100
98
99
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
21
21
9
45
53
67
81
76
77
67
79
79
75
70
67
64
63
57
51
45

Medium Clouds (% Sky Obscured)

61
64
47
41
54
66
71
75
93
100
98
98
100
92
93
90
96
96
99
99
97
100
87
98

High Clouds (% Sky Obscured)

97
95
96
98
97
99
94
100
100
100
80
75
78
51
63
92
100
100
100
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
1
3
2
6
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
4
12
23
33
37
34
34
34
36
34
33
17
11
15
27
27
25
14

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
93
94
94
93
94
94
94
91
88
84
81
81
81
84
84
81
84
85
88
91
95
94

Pressure (mb)

1019
1019
1019
1019
1018
1018
1018
1018
1018
1017
1017
1016
1016
1015
1014
1014
1013
1013
1012
1012
1012
1012
1012
1011

Ozone (du)

293
294
295
294
293
293
291
289
288
286
284
284
281
277
276
275
276
278
278
279
281
280
280
279

Sunday 21

Waxing Crescent 2%

10:26

17:20

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:46, Set: 16:30, Transit: 12:38. Moon - Rise: 10:26, Set: 17:20. Civil Dark: 17:11 - 08:05. Nautical Dark: 17:55 - 07:21. Astro Dark: 18:36 - 06:40

Total Clouds (% Sky Obscured)

100
100
100
100
99
99
98
98
97
86
74
64
64
65
64
76
88
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

57
64
73
71
68
59
55
47
38
29
19
10
6
3
0
0
0
0
1
3
4
4
4
4

Medium Clouds (% Sky Obscured)

99
71
64
48
92
41
45
46
51
86
51
36
34
43
64
74
77
81
86
93
100
94
89
83

High Clouds (% Sky Obscured)

100
100
100
96
88
83
62
28
5
0
0
0
5
10
15
43
72
100
100
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 (%)

18
31
15
21
12
5
10
11
2
3
2
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
6
6
7
7
7
7
7
7
8
8
8
9
9
9
9
8
9
8
7
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
94
93
93
90
88
90
85
84
82
78
74
70
69
69
72
77
77
77
78
78
77
77
79

Pressure (mb)

1011
1011
1011
1011
1011
1011
1011
1011
1011
1012
1012
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012

Ozone (du)

277
275
276
277
277
276
276
274
273
275
277
278
280
284
289
296
299
304
307
310
316
322
320
318

Monday 22

Waxing Crescent 6%

10:55

18:35

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:46, Set: 16:30, Transit: 12:38. Moon - Rise: 10:55, Set: 18:35. Civil Dark: 17:11 - 08:05. Nautical Dark: 17:55 - 07:22. Astro Dark: 18:36 - 06:40

Total Clouds (% Sky Obscured)

99
97
96
95
94
93
93
93
93
93
93
93
91
91
90
87
85
84
86
90
94
96
98
100

Low Clouds (% Sky Obscured)

3
1
0
0
0
0
17
33
49
46
43
42
45
51
48
61
68
78
86
89
92
95
97
100

Medium Clouds (% Sky Obscured)

84
85
87
89
92
93
87
79
73
65
58
53
55
60
57
60
65
73
83
89
90
90
70
65

High Clouds (% Sky Obscured)

94
87
81
68
55
42
49
57
66
68
71
75
63
51
39
27
15
4
6
8
10
9
7
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
3
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

3
3
3
3
3
3
2
3
2
3
3
3
3
3
3
3
3
3
3
3
3
3
2
3

Relative Humidity (%)

81
79
81
80
80
80
80
82
83
83
82
79
78
81
82
85
86
88
89
89
89
91
91
93

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1012
1012
1012
1012
1011
1011
1012
1012
1012
1012
1012
1013
1013

Ozone (du)

319
323
323
324
327
329
331
333
337
341
348
357
364
367
370
374
375
377
378
379
380
381
382
383

Tuesday 23

Waxing Crescent 12%

11:17

19:53

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
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 08:47, Set: 16:31, Transit: 12:39. Moon - Rise: 11:17, Set: 19:53. Civil Dark: 17:12 - 08:06. Nautical Dark: 17:56 - 07:22. Astro Dark: 18:37 - 06:41

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
99
83
67
54
69
79
88
84
84
83
82
76
75
77
79
85

Low Clouds (% Sky Obscured)

81
72
65
70
70
71
79
82
86
74
57
42
53
64
73
61
50
39
37
38
36
44
51
56

Medium Clouds (% Sky Obscured)

49
44
38
40
42
44
37
41
42
38
34
24
22
20
17
31
46
60
55
55
50
50
45
40

High Clouds (% Sky Obscured)

20
35
52
40
29
20
25
30
30
30
30
30
30
15
5
0
0
0
0
0
5
5
5
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
0
0
0
1
0
9
12
12
10
7
1
1
1
0
3
3
1
1
1
0
1
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
2
2
3
3
3
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2

Relative Humidity (%)

91
93
93
94
94
94
94
94
94
93
89
88
83
85
85
86
88
91
93
93
94
94
96
96

Pressure (mb)

1013
1013
1012
1012
1012
1013
1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1016
1016
1016

Ozone (du)

385
385
386
387
388
389
390
388
387
386
385
384
383
383
384
385
386
387
388
390
393
395
395
395

Wednesday 24

Waxing Crescent 19%

11:32

21:12

Sun - Rise: 08:47, Set: 16:32, Transit: 12:39. Moon - Rise: 11:32, Set: 21:12. Civil Dark: 17:12 - 08:06. Nautical Dark: 17:56 - 07:22. Astro Dark: 18:38 - 06:41

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for De Meern, Gemeente Utrecht, Netherlands (52.08,5.03)

Generated: 18/12/25 01:19:29. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+1.00