Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 5

Waning Gibbous 91%

19:23

10:27

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

Sun - Rise: 08:46, Set: 16:43, Transit: 12:45. Moon - Rise: 19:23, Set: 10:27. Civil Dark: 17:23 - 08:06. Nautical Dark: 18:06 - 07:23. Astro Dark: 18:47 - 06:42

Total Clouds (% Sky Obscured)

96
95
100
100
100
100
100
69
35
28
92
96
96
94
65
74
53
36
22
0
34
1
46
27

Low Clouds (% Sky Obscured)

51
45
50
77
83
77
87
64
35
17
23
65
65
56
58
61
53
36
22
0
34
0
23
25

Medium Clouds (% Sky Obscured)

84
95
100
100
100
100
97
9
0
9
66
55
45
72
56
44
0
0
0
0
2
1
29
6

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)

3
0
0
0
0
0
0
0
6
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
2
0
0
0
0

Precipitation Type

None
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
3
72
82
73
58
47
25
11
5
5
8
17
34
15
5
1
0
1
1
1
1
2
3

Precipitation Amount (mm)

0
0
0.5
0.6
0.6
0.3
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
98
96
98
98
100
98
96
94
94
92
91
91
91
94
94
91
87
86
86
87
87
87
87

Pressure (mb)

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

Ozone (du)

404
408
410
406
400
395
397
407
408
405
403
402
407
415
416
415
416
411
408
409
408
404
406
405

Tuesday 6

Waning Gibbous 83%

20:49

10:44

06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 Good
12 OK
13 OK
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: 08:46, Set: 16:44, Transit: 12:45. Moon - Rise: 20:49, Set: 10:44. Civil Dark: 17:24 - 08:06. Nautical Dark: 18:07 - 07:23. Astro Dark: 18:48 - 06:42

Total Clouds (% Sky Obscured)

86
82
70
62
31
6
11
23
44
57
77
86
78
80
90
73
71
73
100
100
100
100
97
100

Low Clouds (% Sky Obscured)

48
58
66
54
19
1
1
18
36
32
36
78
78
76
73
51
39
39
43
46
54
63
59
93

Medium Clouds (% Sky Obscured)

73
65
22
22
23
4
9
5
3
26
61
76
49
54
20
3
61
67
100
100
100
100
93
100

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
35
41
8
30
50
13
86
65
27
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
1
3

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
Snow
Snow
None
None
None
None
None
None
None
None
None
Sleet
None

Precipitation Probability (%)

5
7
8
3
2
0
1
1
2
0
7
47
63
31
14
4
2
1
1
4
6
31
58
33

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0.5
0
0
0
0
0
0
0
0
0
0.2
0

Wind Speed/Direction (mph)

5
5
5
5
7
7
7
8
9
9
8
9
11
13
13
14
14
14
15
15
17
18
19
20

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
89
89
89
87
89
91
93
93
92
94
91
86
87
87
89
91
89
89
87
87
91
91

Pressure (mb)

1015
1015
1016
1016
1016
1017
1016
1016
1016
1015
1015
1015
1015
1014
1014
1014
1013
1013
1012
1011
1010
1010
1009
1008

Ozone (du)

398
398
397
398
397
395
392
391
390
392
393
391
391
392
394
397
391
388
387
391
393
395
393
397

Wednesday 7

Waning Gibbous 74%

22:09

10:57

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: 08:45, Set: 16:46, Transit: 12:45. Moon - Rise: 22:09, Set: 10:57. Civil Dark: 17:25 - 08:05. Nautical Dark: 18:09 - 07:22. Astro Dark: 18:50 - 06:41

Total Clouds (% Sky Obscured)

100
98
100
100
94
86
91
70
79
86
61
56
56
61
59
71
72
89
99
100
99
99
99
100

Low Clouds (% Sky Obscured)

100
97
92
92
91
86
91
70
79
86
57
51
36
52
54
53
66
76
56
59
64
70
76
83

Medium Clouds (% Sky Obscured)

100
94
100
100
78
21
16
13
0
0
0
0
18
6
3
2
7
26
55
74
85
95
98
99

High Clouds (% Sky Obscured)

5
5
1
0
0
0
0
0
0
3
10
13
15
19
46
37
5
19
90
81
51
51
52
42

ISS Passover

Visibility (miles)

9
9
1
0
0
0
0
8
9
1
0
0
0
2
6
9
9
9
9
9
0
0
1
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
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Snow
None
None
None

Precipitation Probability (%)

78
95
89
84
71
65
37
20
41
45
19
6
1
0
0
0
1
9
6
27
39
19
20
23

Precipitation Amount (mm)

0.5
1
0.5
0.5
0.3
0.3
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0

Wind Speed/Direction (mph)

21
20
20
21
20
19
19
18
15
11
9
5
5
4
4
4
5
5
7
9
9
10
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-7
-8
-8
-7
-7
-7
-6
-5
-4
-2
-2
-2
-4
-5
-5
-6
-5
-5
-5
-4
-4
-4
-4

Dew Point (°C)

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

Relative Humidity (%)

88
88
91
96
96
96
96
96
96
98
98
100
98
98
96
91
91
92
92
92
98
100
98
94

Pressure (mb)

1007
1007
1007
1006
1006
1007
1006
1006
1006
1006
1008
1009
1009
1010
1011
1011
1011
1011
1011
1011
1010
1010
1009
1008

Ozone (du)

398
399
400
400
401
401
395
388
382
382
380
369
349
333
332
326
320
317
316
320
321
322
322
324

Thursday 8

Waning Gibbous 64%

23:26

11:07

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: 08:45, Set: 16:47, Transit: 12:46. Moon - Rise: 23:26, Set: 11:07. Civil Dark: 17:27 - 08:05. Nautical Dark: 18:10 - 07:22. Astro Dark: 18:51 - 06:41

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

90
94
97
100
93
87
79
73
66
58
56
54
53
59
66
73
82
91
100
92
85
79
75
53

Medium Clouds (% Sky Obscured)

93
92
81
27
28
33
40
48
48
100
97
90
100
100
100
100
100
100
100
99
99
98
95
99

High Clouds (% Sky Obscured)

42
87
63
59
95
100
100
81
53
29
50
75
100
100
100
100
100
100
100
100
100
100
68
32

ISS Passover

Visibility (miles)

9
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

29
34
56
54
50
22
13
5
5
2
0
0
1
7
19
61
95
95
95
95
95
95
95
58

Precipitation Amount (mm)

0
0
0.2
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0.2
0.8
1.3
1.4
1.6
2.2
1.5
0.7
0.2

Wind Speed/Direction (mph)

12
12
11
12
13
13
12
11
11
11
10
9
9
9
9
10
11
12
15
17
16
16
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
92
96
98
98
100
98
98
100
100
100
100
100
100
100
100
98
100
100
98
100
98
98
96

Pressure (mb)

1008
1007
1007
1006
1006
1006
1005
1005
1005
1005
1004
1004
1004
1003
1002
1001
999
997
994
992
990
988
986
985

Ozone (du)

326
328
328
332
336
332
333
329
325
324
323
326
327
326
324
326
325
327
329
333
332
329
333
342

Friday 9

Waning Gibbous 62%

00:40

11:17

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: 08:44, Set: 16:48, Transit: 12:46. Moon - Rise: 00:40, Set: 11:17. Civil Dark: 17:28 - 08:05. Nautical Dark: 18:11 - 07:22. Astro Dark: 18:52 - 06:41

Total Clouds (% Sky Obscured)

67
84
100
79
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

47
66
82
79
93
96
100
95
90
85
88
91
93
92
89
87
85
84
85
91
94
97
95
94

Medium Clouds (% Sky Obscured)

60
60
60
60
100
100
100
100
99
99
99
100
100
100
100
100
100
100
100
100
100
100
92
83

High Clouds (% Sky Obscured)

0
0
0
0
33
67
100
67
33
5
0
0
0
40
27
16
15
14
13
11
12
11
28
29

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3

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

Precipitation Probability (%)

16
33
50
58
69
75
90
95
92
89
88
79
76
95
95
81
75
70
63
55
48
42
54
63

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
19
19
20
23
22
20
18
16
17
19
17
17
16
17
14
13
11
16
19
20
19
19
18

Chance of Frost

Temperature (°C)

5
5
5
5
5
5
5
4
4
3
3
3
3
4
4
4
4
3
3
3
3
4
4
4

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
86
85
82
76
76
80
86
94
96
96
96
96
98
98
98
98
98
98
96
98
98
96
96

Pressure (mb)

984
983
983
982
980
980
979
978
979
980
981
982
983
984
986
986
987
989
990
992
993
994
996
997

Ozone (du)

354
360
360
362
361
362
376
384
383
382
388
391
395
400
404
408
412
408
404
401
402
403
404
401

Saturday 10

Third Quarter 54%

01:54

11:28

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: 08:44, Set: 16:50, Transit: 12:47. Moon - Rise: 01:54, Set: 11:28. Civil Dark: 17:29 - 08:04. Nautical Dark: 18:12 - 07:21. Astro Dark: 18:53 - 06:40

Total Clouds (% Sky Obscured)

99
96
93
91
85
81
76
84
92
93
92
91
88
82
76
67
74
87
99
98
96
94
96
98

Low Clouds (% Sky Obscured)

92
88
80
78
81
81
76
84
89
90
92
91
88
82
76
67
74
87
97
96
95
93
82
73

Medium Clouds (% Sky Obscured)

72
60
51
38
28
18
8
8
10
13
10
5
1
1
0
0
12
25
38
36
31
29
44
59

High Clouds (% Sky Obscured)

16
13
8
0
0
0
0
0
0
0
0
0
0
0
0
0
30
59
89
74
63
53
67
82

ISS Passover

Visibility (miles)

6
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

Light Rain
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

Precipitation Probability (%)

71
60
50
38
36
33
25
25
23
17
15
15
7
13
14
12
11
10
9
9
11
9
7
6

Precipitation Amount (mm)

0.5
0.3
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)

17
16
14
13
11
11
12
13
12
11
10
9
7
6
5
4
4
4
4
5
5
5
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
91
89
89
88
86
83
83
83
83
82
83
83
83
85
86
86
88
88
89
88
88
86
86

Pressure (mb)

998
999
1000
1001
1003
1004
1005
1006
1007
1009
1010
1011
1012
1013
1013
1014
1015
1015
1015
1015
1015
1015
1014
1014

Ozone (du)

397
394
392
389
387
385
384
383
380
377
374
373
371
370
364
359
353
350
346
342
340
338
336
332

Sunday 11

Waning Crescent 45%

03:08

11:39

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: 08:43, Set: 16:51, Transit: 12:47. Moon - Rise: 03:08, Set: 11:39. Civil Dark: 17:31 - 08:04. Nautical Dark: 18:13 - 07:21. Astro Dark: 18:54 - 06:40

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

67
63
60
61
73
84
90
87
91
92
87
82
75
75
74
73
77
81
86

Medium Clouds (% Sky Obscured)

70
79
85
97
90
83
76
74
72
70
82
90
100
100
100
100
90
79
71

High Clouds (% Sky Obscured)

97
97
98
100
100
99
99
99
100
100
100
100
100
100
100
100
90
82
73

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
7
6
4
6
7
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

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

Precipitation Probability (%)

6
6
12
19
71
95
95
95
95
95
95
95
83
83
83
79
64
45
11

Precipitation Amount (mm)

0
0
0
0
0.4
0.8
1.3
1.7
1.7
1.5
1.2
0.8
0.5
0.4
0.4
0.4
0.3
0
0

Wind Speed/Direction (mph)

9
10
12
14
16
18
20
21
20
19
18
17
16
16
15
15
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
89
89
89
88
86
83
82
79
77
77
82
86
91
91
91
93
93
93

Pressure (mb)

1013
1012
1011
1011
1010
1008
1006
1005
1003
1002
1000
999
999
998
998
998
998
998
998

Ozone (du)

329
325
323
321
319
319
320
320
318
317
315
312
309
306
307
309
310
315
319

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

Generated: 05/01/26 06:03:36. Forecast: 05/01/26 to 11/01/26. Timezone: UTC+1.00