Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Full Moon 98%

17:30

10:50

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
18 Bad
19 Bad

Sun - Rise: 08:33, Set: 16:28, Transit: 12:30. Moon - Rise: 17:30, Set: 10:50. Civil Dark: 17:08 - 07:52. Nautical Dark: 17:52 - 07:09. Astro Dark: 18:33 - 06:28

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
99
100
99
100
100
100
100
100
100
100
100
86
86
95
100
100
100
100

Low Clouds (% Sky Obscured)

35
30
40
56
70
91
95
100
97
100
72
85
76
67
61
71
80
77
76
79
96
80
100
86

Medium Clouds (% Sky Obscured)

100
87
97
100
99
100
68
77
66
89
90
99
93
89
100
100
100
72
62
67
72
84
92
100

High Clouds (% Sky Obscured)

100
41
24
100
90
9
0
5
10
10
95
68
49
100
100
100
100
20
10
55
91
100
99
100

ISS Passover

Visibility (miles)

9
9
9
9
9
5
9
8
9
9
9
9
8
9
9
5
6
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
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
None
None
None
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
16
35
69
89
67
45
20
20
43
54
25
12
43
63
55
24
30
23
66
78
94
80

Precipitation Amount (mm)

0
0
0
0
0.3
0.6
0.3
0
0
0
0
0.2
0
0
0
0.2
0.2
0
0
0
0.5
0.6
0.9
0.3

Wind Speed/Direction (mph)

9
12
13
15
16
16
18
18
17
16
15
15
15
15
16
15
15
16
16
16
16
16
16
17

Chance of Frost

Temperature (°C)

4
5
5
5
5
5
5
6
6
6
6
6
7
7
7
8
9
9
10
10
10
10
10
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
85
83
79
82
85
82
76
79
79
84
85
90
90
87
90
91
87
84
84
88
84
84
87

Pressure (mb)

1009
1008
1007
1006
1005
1004
1003
1002
1002
1001
1001
1001
1000
1001
1001
1001
1000
1000
1000
1000
1000
1000
1001
1001

Ozone (du)

318
310
302
297
297
296
296
294
296
297
297
298
296
293
292
293
292
290
287
286
285
284
286
284

Saturday 6

Waning Gibbous 93%

18:57

11:36

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
18 Bad
19 Bad

Sun - Rise: 08:34, Set: 16:28, Transit: 12:31. Moon - Rise: 18:57, Set: 11:36. Civil Dark: 17:08 - 07:53. Nautical Dark: 17:51 - 07:10. Astro Dark: 18:33 - 06:29

Total Clouds (% Sky Obscured)

100
90
91
92
93
97
95
100
97
77
87
99
100
100
100
100
97
98
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

84
85
81
83
86
94
93
92
65
54
56
60
67
64
99
80
66
64
69
86
97
92
91
94

Medium Clouds (% Sky Obscured)

92
82
79
50
47
38
36
40
50
31
67
75
99
100
63
95
94
93
87
89
99
100
100
100

High Clouds (% Sky Obscured)

92
30
2
1
1
0
0
91
74
28
39
96
100
100
100
100
51
62
100
100
100
100
100
100

ISS Passover

Visibility (miles)

4
3
4
9
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
3
3
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

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

Precipitation Probability (%)

93
64
45
42
24
19
16
14
5
3
0
0
1
1
3
3
19
28
35
62
95
95
95
95

Precipitation Amount (mm)

0.5
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.8
1
2
2.1

Wind Speed/Direction (mph)

17
16
16
17
17
16
15
15
14
14
12
12
11
10
11
11
10
10
10
10
11
13
14
14

Chance of Frost

Temperature (°C)

10
10
10
10
10
10
10
9
9
9
9
9
8
9
9
10
10
10
10
10
10
10
10
10

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
95
91
88
88
87
85
87
88
88
90
91
93
93
91
90
90
91
90
91
95
95
96
96

Pressure (mb)

1001
1002
1002
1003
1004
1004
1005
1005
1006
1006
1006
1007
1007
1008
1008
1008
1007
1007
1006
1006
1005
1004
1004
1003

Ozone (du)

286
288
290
292
294
293
287
282
277
277
281
283
281
279
278
277
276
275
275
275
274
276
274
277

Sunday 7

Waning Gibbous 86%

No Rise

12:06

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
18 Bad
19 Bad

Sun - Rise: 08:35, Set: 16:28, Transit: 12:31. Moon - Rise: No Rise, Set: 12:06. Civil Dark: 17:08 - 07:55. Nautical Dark: 17:51 - 07:11. Astro Dark: 18:32 - 06:30

Total Clouds (% Sky Obscured)

100
100
100
100
93
90
94
97
99
100
88
75
86
98
100
96
88
93
96
100
97
94
92
95

Low Clouds (% Sky Obscured)

100
94
100
69
75
72
60
71
63
72
62
53
48
75
71
51
69
69
62
56
54
52
49
58

Medium Clouds (% Sky Obscured)

100
93
100
81
17
41
44
32
21
10
32
7
55
95
100
78
80
81
81
80
81
81
85
76

High Clouds (% Sky Obscured)

100
100
100
100
70
44
66
97
99
100
32
25
63
62
100
80
34
53
80
100
86
84
83
91

ISS Passover

Visibility (miles)

2
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
3
3
3
3
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

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

Precipitation Probability (%)

95
91
39
8
3
3
15
2
2
4
3
5
0
10
25
11
24
47
54
95
95
95
95
50

Precipitation Amount (mm)

1.8
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.8
0.9
0.7
0.7
0

Wind Speed/Direction (mph)

14
16
17
19
19
20
18
16
15
14
12
13
10
10
11
12
13
14
14
14
11
10
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

11
11
11
12
12
11
10
10
10
10
10
10
10
10
10
11
11
12
12
12
12
11
12
11

Relative Humidity (%)

96
95
89
87
87
86
83
86
84
86
87
90
93
95
92
89
89
92
92
90
93
95
98
98

Pressure (mb)

1003
1003
1003
1003
1004
1005
1006
1007
1007
1008
1009
1010
1010
1011
1011
1012
1012
1012
1012
1012
1013
1013
1013
1014

Ozone (du)

277
280
283
283
289
296
299
297
298
299
299
299
299
300
299
300
302
307
312
314
317
317
320
320

Monday 8

Waning Gibbous 77%

20:26

12:25

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
18 Bad
19 Bad

Sun - Rise: 08:36, Set: 16:27, Transit: 12:32. Moon - Rise: 20:26, Set: 12:25. Civil Dark: 17:08 - 07:56. Nautical Dark: 17:51 - 07:12. Astro Dark: 18:32 - 06:31

Total Clouds (% Sky Obscured)

97
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)

62
68
63
56
46
48
49
52
53
55
57
53
49
45
31
17
3
30
60
87
88
89
89
86

Medium Clouds (% Sky Obscured)

51
42
72
88
100
99
99
98
99
97
89
97
100
100
99
98
97
96
96
96
96
95
95
96

High Clouds (% Sky Obscured)

97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
98

ISS Passover

Visibility (miles)

3
9
9
5
9
9
4
5
4
9
9
9
9
8
5
8
4
6
8
9
9
7
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
None
Very Light Rain
Very Light Rain
None
None
Very Light Rain
Light Rain
Very Light Rain
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

72
39
55
65
27
52
63
88
63
19
22
40
73
83
84
72
77
85
70
41
43
44
26
43

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

11
12
14
12
10
9
10
11
13
13
13
14
14
14
14
15
15
17
17
17
17
17
17
17

Chance of Frost

Temperature (°C)

12
12
12
12
11
11
11
11
11
11
11
11
11
12
12
12
12
12
12
12
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

11
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
10
10
10
10
10

Relative Humidity (%)

96
90
86
88
92
95
91
90
90
91
91
90
88
88
87
87
90
89
89
87
86
84
83
80

Pressure (mb)

1014
1014
1014
1014
1014
1014
1013
1013
1013
1012
1012
1011
1010
1010
1010
1009
1009
1008
1007
1007
1007
1007
1007
1007

Ozone (du)

317
316
317
315
314
310
309
308
310
308
305
304
303
301
299
294
290
289
289
289
287
287
287
286

Tuesday 9

Waning Gibbous 67%

21:53

12:40

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
18 Bad
19 Bad

Sun - Rise: 08:37, Set: 16:27, Transit: 12:32. Moon - Rise: 21:53, Set: 12:40. Civil Dark: 17:08 - 07:57. Nautical Dark: 17:51 - 07:13. Astro Dark: 18:32 - 06:32

Total Clouds (% Sky Obscured)

100
100
100
100
93
100
100
95
94
91
95
95
95
96
94
92
90
87
82
75
76
84
92
87

Low Clouds (% Sky Obscured)

84
77
76
73
69
73
70
68
65
67
77
85
81
78
77
74
66
56
49
45
46
51
56
51

Medium Clouds (% Sky Obscured)

98
99
99
78
67
98
81
60
55
50
44
19
21
20
26
35
40
40
32
28
43
60
80
62

High Clouds (% Sky Obscured)

97
95
68
41
14
42
69
92
66
36
6
0
0
0
2
3
5
4
3
2
15
24
22
23

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

Precipitation Probability (%)

53
42
27
15
5
4
3
0
3
3
6
25
40
50
54
47
40
36
23
5
12
15
14
12

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
17
17
16
16
16
17
19
21
21
21
21
21
19
18
17
16
16
15
15
14
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
75
70
71
70
70
67
67
69
77
76
76
77
77
78
77
75
73
77
79
81
83
83
84

Pressure (mb)

1007
1007
1007
1007
1007
1007
1007
1007
1007
1008
1008
1009
1009
1010
1011
1012
1012
1013
1013
1013
1014
1014
1015
1015

Ozone (du)

285
285
283
286
287
285
283
282
282
282
284
284
284
285
286
286
286
286
287
288
289
293
296
299

Wednesday 10

Waning Gibbous 57%

23:13

12:51

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 OK
16 Bad
17 OK
18 OK
19 Bad

Sun - Rise: 08:38, Set: 16:27, Transit: 12:33. Moon - Rise: 23:13, Set: 12:51. Civil Dark: 17:08 - 07:57. Nautical Dark: 17:51 - 07:14. Astro Dark: 18:33 - 06:33

Total Clouds (% Sky Obscured)

82
78
75
66
57
54
52
62
58
54
51
51
49
51
62
66
71
61
51
42
40
38
35
41

Low Clouds (% Sky Obscured)

53
46
40
34
31
39
48
58
51
47
42
37
28
25
20
14
5
8
10
17
17
17
11
20

Medium Clouds (% Sky Obscured)

46
26
18
10
2
1
1
0
0
0
0
0
0
0
8
13
20
12
8
2
5
7
10
16

High Clouds (% Sky Obscured)

22
18
12
6
0
0
0
0
0
0
0
0
0
0
13
26
39
29
17
5
9
11
18
24

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 (%)

11
7
17
18
18
24
21
6
6
6
5
3
2
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
14
14
13
13
13
13
12
12
11
11
10
10
11
11
11
12
10
9
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
7
7
7
7
7
7
7
6
6
7
6
7
7
7
7
7
7
6
6
6

Relative Humidity (%)

85
85
85
87
88
90
90
90
91
90
90
88
90
91
91
90
87
84
85
87
88
90
91
93

Pressure (mb)

1015
1016
1016
1017
1017
1018
1018
1019
1019
1020
1020
1021
1021
1022
1022
1023
1023
1023
1023
1023
1023
1022
1022
1022

Ozone (du)

305
312
318
318
319
320
318
316
314
311
308
305
304
304
304
303
302
301
300
298
296
297
299
300

Thursday 11

Third Quarter 46%

00:29

13:01

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

Sun - Rise: 08:39, Set: 16:27, Transit: 12:33. Moon - Rise: 00:29, Set: 13:01. Civil Dark: 17:08 - 07:58. Nautical Dark: 17:51 - 07:15. Astro Dark: 18:33 - 06:33

Total Clouds (% Sky Obscured)

47
49
56
62
70
54
33
10
16
21
27
35
43
51
41
28
15

Low Clouds (% Sky Obscured)

28
38
46
53
57
36
19
0
6
11
18
26
35
43
29
14
0

Medium Clouds (% Sky Obscured)

28
30
36
41
47
31
16
0
0
0
0
0
0
0
6
13
15

High Clouds (% Sky Obscured)

29
35
39
53
67
54
33
10
16
21
27
35
40
40
40
28
15

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
93
94
94
94
94
94
93
94
93
93
93
88
83
79
78
75

Pressure (mb)

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

Ozone (du)

300
301
302
302
301
301
300
299
298
297
296
295
295
296
296
296
297

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

Generated: 05/12/25 19:39:24. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+1.00