Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 28

Full Moon 99%

20:36

08:10

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

Sun - Rise: 06:47, Set: 20:35, Transit: 13:40. Moon - Rise: 20:36, Set: 08:10. Civil Dark: 21:11 - 06:11. Nautical Dark: 21:56 - 05:27. Astro Dark: 22:46 - 04:37

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
80
50
48
63
44
100
70
40
59
64
86
64
51
51
56
56
97
99

Low Clouds (% Sky Obscured)

54
67
72
68
78
56
27
23
21
1
8
18
20
18
26
46
44
49
46
44
35
52
49
52

Medium Clouds (% Sky Obscured)

89
100
100
100
100
76
12
1
3
0
0
15
45
34
55
50
76
50
25
23
27
9
16
11

High Clouds (% Sky Obscured)

100
100
100
100
100
100
59
30
29
57
35
100
41
2
50
34
2
0
0
0
1
4
66
96

ISS Passover

Visibility (miles)

4
2
2
3
4
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
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

80
95
95
95
95
53
10
2
4
5
3
5
4
10
24
16
8
10
19
6
6
7
8
28

Precipitation Amount (mm)

0.7
0.9
1.5
0.7
1.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
11
11
12
11
10
10
10
9
10
12
13
13
13
13
13
13
12
13
13
14
15
16
16

Chance of Frost

Temperature (°C)

20
20
20
19
18
18
18
18
17
17
16
16
16
16
15
15
15
15
15
16
17
18
19
20

Feels Like (°C)

20
19
18
17
17
17
17
17
16
15
15
15
13
13
13
12
12
12
14
15
16
16
17
17

Dew Point (°C)

16
18
19
18
18
17
16
16
16
15
14
14
13
12
12
11
11
12
12
13
13
12
12
12

Relative Humidity (%)

76
86
93
95
95
93
89
88
90
89
85
83
79
78
79
78
74
80
82
81
77
70
62
59

Pressure (mb)

1008
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010

Ozone (du)

334
338
340
338
337
338
338
337
337
336
336
334
333
334
326
325
325
323
321
317
312
308
306
306

Saturday 29

Waning Gibbous 96%

20:46

09:28

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

Sun - Rise: 06:48, Set: 20:33, Transit: 13:40. Moon - Rise: 20:46, Set: 09:28. Civil Dark: 21:09 - 06:13. Nautical Dark: 21:53 - 05:29. Astro Dark: 22:42 - 04:40

Total Clouds (% Sky Obscured)

100
100
100
99
100
100
99
97
100
100
100
95
99
99
97
100
95
86
74
64
85
92
82
87

Low Clouds (% Sky Obscured)

45
17
6
90
50
59
73
95
76
72
77
67
84
94
97
92
83
76
41
24
68
92
82
55

Medium Clouds (% Sky Obscured)

73
100
100
98
99
100
99
97
99
100
99
33
21
28
25
30
27
11
11
12
17
11
1
7

High Clouds (% Sky Obscured)

100
100
98
32
80
25
1
16
67
100
75
81
58
72
0
3
3
1
32
23
2
2
5
40

ISS Passover

Visibility (miles)

8
9
9
7
5
9
9
8
9
2
5
8
9
9
9
9
8
8
9
9
8
6
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
Very Light Rain
None
None
Light Rain
None
Very Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
Light Rain
None
None

Precipitation Probability (%)

31
38
37
55
40
31
71
41
60
95
95
52
35
27
42
45
37
25
10
29
46
65
34
27

Precipitation Amount (mm)

0
0
0
0.3
0
0
0.7
0
0.2
0.6
1.1
0
0
0
0
0
0
0
0
0
0
0.6
0
0

Wind Speed/Direction (mph)

16
16
15
14
13
12
11
10
11
11
13
14
15
17
19
20
19
17
15
14
15
16
16
17

Chance of Frost

Temperature (°C)

21
22
22
21
20
20
19
19
18
18
18
17
18
18
18
18
18
18
18
18
19
19
19
20

Feels Like (°C)

18
19
19
19
19
18
18
17
17
16
15
14
15
14
14
14
15
16
16
18
18
18
17
18

Dew Point (°C)

14
15
16
17
19
18
18
17
17
17
17
16
16
16
17
17
17
17
17
17
17
18
17
18

Relative Humidity (%)

64
65
67
75
91
92
89
92
92
93
95
93
90
89
89
92
90
93
92
90
88
91
91
85

Pressure (mb)

1010
1010
1009
1009
1009
1009
1008
1008
1007
1007
1006
1006
1005
1005
1004
1004
1005
1005
1006
1007
1008
1009
1009
1010

Ozone (du)

304
303
303
301
304
306
307
306
306
306
311
310
306
304
303
304
304
305
305
307
306
305
304
304

Sunday 30

Waning Gibbous 91%

20:57

10:49

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

Sun - Rise: 06:50, Set: 20:31, Transit: 13:40. Moon - Rise: 20:57, Set: 10:49. Civil Dark: 21:06 - 06:15. Nautical Dark: 21:50 - 05:31. Astro Dark: 22:39 - 04:42

Total Clouds (% Sky Obscured)

83
88
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
95
89
72

Low Clouds (% Sky Obscured)

64
78
75
52
53
16
0
0
12
40
2
61
47
37
59
67
50
79
79
80
77
73
72
59

Medium Clouds (% Sky Obscured)

0
0
4
0
22
13
83
79
93
100
99
82
33
24
70
76
31
4
2
23
45
62
40
20

High Clouds (% Sky Obscured)

42
59
100
100
100
100
100
100
100
87
75
80
80
100
100
100
100
100
81
80
75
75
53
28

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

18
16
5
14
20
17
12
2
13
54
95
91
66
50
73
59
74
65
21
43
64
83
90
90

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
17
16
14
13
10
7
5
4
5
6
7
7
9
10
11
11
13
14
15
16
17
18
18

Chance of Frost

Temperature (°C)

21
21
21
22
22
21
21
20
19
18
17
17
17
16
16
16
16
16
16
16
16
17
17
18

Feels Like (°C)

18
19
19
19
20
20
20
20
19
17
16
16
15
15
15
15
14
13
12
13
13
13
14
14

Dew Point (°C)

16
15
15
14
15
17
17
17
16
15
16
16
16
15
15
15
15
15
15
15
15
15
15
15

Relative Humidity (%)

74
65
66
63
65
77
79
84
86
85
92
92
93
93
95
96
95
95
93
92
90
86
86
85

Pressure (mb)

1010
1011
1011
1011
1011
1011
1011
1011
1010
1010
1010
1010
1009
1009
1008
1008
1008
1008
1008
1008
1008
1008
1008
1009

Ozone (du)

304
303
303
303
304
304
305
307
310
313
315
319
327
325
324
326
328
332
332
329
330
332
333
334

Monday 31

Waning Gibbous 83%

21:10

12:13

13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
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

Sun - Rise: 06:52, Set: 20:29, Transit: 13:39. Moon - Rise: 21:10, Set: 12:13. Civil Dark: 21:04 - 06:16. Nautical Dark: 21:48 - 05:33. Astro Dark: 22:36 - 04:45

Total Clouds (% Sky Obscured)

82
57
54
41
38
28
21
30
42
54
78
91
93
61
60
93
91
89
87
88
89
91
90
73

Low Clouds (% Sky Obscured)

77
53
52
41
36
26
20
25
29
32
30
27
22
15
7
0
4
9
13
18
23
29
28
35

Medium Clouds (% Sky Obscured)

3
2
1
0
1
2
3
8
13
15
20
20
22
28
29
31
24
18
16
54
19
12
12
12

High Clouds (% Sky Obscured)

11
8
4
0
0
0
0
6
11
19
40
46
38
9
5
45
40
30
35
40
40
40
35
16

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

86
83
73
43
32
15
9
11
11
8
16
21
15
23
20
2
3
3
1
2
9
15
36
50

Precipitation Amount (mm)

0.6
0.5
0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2

Wind Speed/Direction (mph)

18
17
18
18
18
16
13
12
11
9
9
9
9
8
8
8
8
7
7
7
8
9
10
10

Chance of Frost

Temperature (°C)

18
18
19
19
19
19
19
18
18
17
16
16
16
15
15
15
15
14
14
15
16
17
19
19

Feels Like (°C)

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

Dew Point (°C)

14
13
13
14
12
12
12
14
13
14
14
14
14
14
14
13
13
13
13
13
13
13
12
12

Relative Humidity (%)

78
72
70
71
64
63
63
73
76
83
87
89
90
92
92
90
92
92
93
87
81
74
65
63

Pressure (mb)

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

Ozone (du)

334
334
335
334
334
333
329
324
321
319
317
316
314
314
313
313
312
312
314
314
313
314
315
315

Tuesday 1

Waning Gibbous 74%

21:26

No Set

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

Sun - Rise: 06:53, Set: 20:26, Transit: 13:39. Moon - Rise: 21:26, Set: No Set. Civil Dark: 21:02 - 06:18. Nautical Dark: 21:45 - 05:35. Astro Dark: 22:33 - 04:47

Total Clouds (% Sky Obscured)

89
80
70
61
50
38
25
25
25
23
19
25
47
67
82
93
95
98
100
90
82
73
81
86

Low Clouds (% Sky Obscured)

72
54
42
27
16
9
0
0
0
0
0
0
0
1
2
3
4
5
5
9
13
17
19
20

Medium Clouds (% Sky Obscured)

11
56
70
61
50
38
25
7
25
23
19
25
32
38
50
64
56
68
75
70
60
53
40
31

High Clouds (% Sky Obscured)

39
40
35
30
20
20
15
10
10
12
9
17
37
57
74
87
95
94
92
77
63
31
30
58

ISS Passover

Visibility (miles)

6
7
7
5
9
7
8
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

Very Light Rain
None
Very 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

Precipitation Probability (%)

49
39
45
45
45
49
22
12
4
0
0
0
0
2
3
2
5
6
2
8
11
3
30
41

Precipitation Amount (mm)

0.2
0
0.2
0.3
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
11
10
10
10
8
6
5
4
4
3
4
5
5
6
7
7
8
8
9
10
12
14
14

Chance of Frost

Temperature (°C)

20
20
20
20
21
20
19
18
16
15
14
14
14
13
13
13
13
13
14
14
16
18
20
20

Feels Like (°C)

20
19
20
20
20
19
19
17
16
15
14
15
14
13
13
13
13
12
12
12
14
15
15
16

Dew Point (°C)

13
14
13
14
15
14
15
15
14
13
12
12
12
12
12
12
12
12
12
13
12
13
12
12

Relative Humidity (%)

62
66
63
66
69
69
75
81
85
85
86
89
89
89
90
92
92
92
92
90
79
71
62
59

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1017

Ozone (du)

314
314
316
317
317
319
321
322
323
324
323
324
323
324
326
327
328
330
331
333
331
329
327
326

Wednesday 2

Waning Gibbous 63%

21:48

13:40

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

Sun - Rise: 06:55, Set: 20:24, Transit: 13:39. Moon - Rise: 21:48, Set: 13:40. Civil Dark: 20:59 - 06:20. Nautical Dark: 21:42 - 05:37. Astro Dark: 22:30 - 04:50

Total Clouds (% Sky Obscured)

96
96
96
96
92
89
85
83
82
79
82
85
88
87
85
82
87
89
92
94
97
100
100
100

Low Clouds (% Sky Obscured)

22
37
53
69
68
68
69
55
40
25
23
25
26
42
61
79
74
70
60
69
80
91
86
78

Medium Clouds (% Sky Obscured)

21
17
8
9
8
7
5
3
2
1
4
9
14
32
45
59
60
66
72
74
77
79
71
63

High Clouds (% Sky Obscured)

87
87
87
86
64
42
20
42
65
79
82
73
46
43
39
45
45
55
60
70
83
93
97
98

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
Very Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

44
48
50
54
55
52
44
37
32
19
47
48
32
44
37
23
20
23
27
41
53
68
94
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.5
0.8

Wind Speed/Direction (mph)

14
15
15
16
16
15
13
11
10
8
8
8
9
9
9
9
9
10
10
11
12
13
14
15

Chance of Frost

Temperature (°C)

20
21
20
20
19
18
17
17
16
16
16
16
16
16
16
16
16
16
16
16
16
17
17
18

Feels Like (°C)

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

Dew Point (°C)

12
12
12
13
13
13
12
12
12
13
13
14
14
15
15
14
15
15
15
15
15
15
16
15

Relative Humidity (%)

58
55
59
63
69
70
72
74
77
81
83
87
89
93
92
89
89
90
92
93
93
90
90
82

Pressure (mb)

1017
1017
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1014
1013
1013
1013
1013
1013

Ozone (du)

324
323
324
324
325
323
321
319
317
316
314
313
311
309
307
306
304
302
300
299
298
298
297
295

Thursday 3

Waning Gibbous 51%

22:19

15:07

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
06 Bad
07 Bad

Sun - Rise: 06:56, Set: 20:22, Transit: 13:38. Moon - Rise: 22:19, Set: 15:07. Civil Dark: 20:57 - 06:22. Nautical Dark: 21:40 - 05:39. Astro Dark: 22:27 - 04:52

Total Clouds (% Sky Obscured)

100
96
92
88
75
64
53
54
53
54
65
77
88
92
96
100
94
84
70

Low Clouds (% Sky Obscured)

66
62
59
56
39
23
6
11
21
22
36
45
56
55
57
64
63
65
63

Medium Clouds (% Sky Obscured)

54
58
61
62
43
24
5
8
11
15
26
34
53
51
58
60
64
69
70

High Clouds (% Sky Obscured)

100
96
91
87
74
54
40
26
15
13
27
41
57
71
77
82
63
44
23

ISS Passover

Visibility (miles)

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

Fog (%)

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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
95
95
87
51
35
7
13
15
4
12
17
21
28
32
32
37
41
45

Precipitation Amount (mm)

1.1
0.9
1
0.7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

19
19
19
19
19
18
18
17
17
16
16
16
15
14
14
15
15
16
16

Feels Like (°C)

14
14
18
17
15
15
16
16
15
14
15
14
14
13
11
12
13
14
14

Dew Point (°C)

15
13
13
12
10
11
11
12
12
12
13
13
13
13
13
13
14
14
15

Relative Humidity (%)

76
69
64
61
57
61
66
72
74
78
81
83
87
92
92
92
93
92
92

Pressure (mb)

1012
1012
1012
1013
1013
1013
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017

Ozone (du)

293
291
290
289
289
288
287
286
284
283
282
282
282
282
281
281
280
281
282

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

Generated: 28/08/26 12:27:10. Forecast: 28/08/26 to 03/09/26. Timezone: UTC+2.00