Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 27

Waxing Gibbous 100%

20:24

06:52

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

Sun - Rise: 06:45, Set: 20:38, Transit: 13:40. Moon - Rise: 20:24, Set: 06:52. Civil Dark: 21:13 - 06:09. Nautical Dark: 21:58 - 05:25. Astro Dark: 22:49 - 04:35

Total Clouds (% Sky Obscured)

100
100
100
78
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
86
86
77
94
100

Low Clouds (% Sky Obscured)

0
2
22
0
24
23
7
12
16
65
16
73
77
62
56
58
51
40
41
58
51
37
40
42

Medium Clouds (% Sky Obscured)

92
34
75
17
18
14
67
77
96
100
99
99
69
67
15
68
25
54
25
55
60
65
76
9

High Clouds (% Sky Obscured)

91
100
47
39
100
100
100
100
100
100
61
100
100
100
100
100
100
100
98
55
53
50
84
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
6
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
Light Rain
None
None
None
None
None
None
Light Rain
None
Moderate Rain
Light Rain
Very Light Rain
None
None
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

49
95
46
6
9
15
13
39
34
90
65
95
95
82
55
19
73
35
8
5
1
1
4
20

Precipitation Amount (mm)

0
0
0.6
0
0
0
0
0
0
0.7
0
2.7
1.9
0.2
0
0
0.7
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
25
26
26
29
30
29
28
27
25
23
22
21
20
20
20
19
19
19
18
18
19
19
20

Feels Like (°C)

21
23
25
25
28
28
29
27
26
26
24
23
23
23
21
21
20
20
19
18
19
20
20
19

Dew Point (°C)

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

Relative Humidity (%)

50
47
43
39
38
38
41
48
55
68
79
85
94
92
96
95
95
95
96
95
95
92
88
82

Pressure (mb)

1010
1010
1009
1009
1009
1008
1008
1008
1008
1008
1009
1009
1009
1008
1008
1007
1007
1008
1007
1007
1007
1007
1008
1008

Ozone (du)

311
316
318
315
313
311
308
307
307
308
308
307
309
310
310
312
312
310
311
315
317
317
321
325

Friday 28

Full Moon 99%

20:36

08:10

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

80
100
100
100
99
100
100
48
26
22
71
100
57
31
2
15
74
91
87
67
60
86
90
81

Low Clouds (% Sky Obscured)

38
42
68
72
78
51
64
35
13
5
0
0
0
0
0
10
37
90
85
67
25
63
52
42

Medium Clouds (% Sky Obscured)

38
100
93
100
79
34
75
4
6
0
0
0
14
9
2
0
15
21
68
40
15
19
16
10

High Clouds (% Sky Obscured)

73
100
78
99
82
76
76
13
10
16
71
100
57
1
1
0
1
0
0
1
1
9
40
48

ISS Passover

Visibility (miles)

9
7
5
9
9
5
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
None
Very Light Rain
None
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

86
81
57
60
54
72
64
11
9
2
1
0
0
0
0
1
2
7
24
19
12
11
5
2

Precipitation Amount (mm)

0.6
0.4
0
0.2
0
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
21
20
20
20
21
20
19
19
18
17
17
16
16
16
15
15
15
16
16
17
18
19
20

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
55
67
75
68
70
84
88
85
90
90
90
86
86
86
86
86
86
82
79
79
74
66
59

Pressure (mb)

1007
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1009
1010
1010

Ozone (du)

333
336
345
346
345
343
342
340
340
340
338
335
334
334
331
326
325
322
320
317
315
310
309
307

Saturday 29

Waning Gibbous 96%

20:46

09:28

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 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)

94
100
99
100
100
100
87
99
84
52
58
76
75
80
70
75
78
95
97
99
99
100
100
98

Low Clouds (% Sky Obscured)

37
48
72
57
58
92
84
72
55
45
47
60
69
74
70
68
65
77
85
91
87
82
79
77

Medium Clouds (% Sky Obscured)

25
89
94
100
94
81
16
24
21
15
13
25
25
30
20
21
16
21
42
45
43
38
30
24

High Clouds (% Sky Obscured)

74
100
97
100
80
85
0
6
5
3
5
76
75
80
6
1
2
68
4
63
69
72
100
82

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

Precipitation Probability (%)

18
13
4
17
80
55
81
31
26
36
11
47
95
61
38
21
13
13
23
28
31
23
33
28

Precipitation Amount (mm)

0
0
0
0
0.7
0
0.6
0
0
0
0
0
1
0.3
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
22
22
23
22
20
19
19
19
19
18
18
18
18
18
18
18
18
18
18
18
18
19
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

53
54
56
56
60
58
63
65
73
77
89
90
88
85
83
86
85
86
83
83
88
89
85
84

Pressure (mb)

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

Ozone (du)

304
304
303
303
306
309
309
307
306
306
306
305
304
304
305
303
303
301
300
300
300
300
301
301

Sunday 30

Waning Gibbous 91%

20:57

10:49

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 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)

96
95
97
98
100
100
100
100
100
100
100
100
80
79
100
98
77
82
95
89
91
89
89
89

Low Clouds (% Sky Obscured)

51
74
52
76
77
49
77
64
36
53
21
26
12
29
19
32
45
57
37
42
42
73
74
50

Medium Clouds (% Sky Obscured)

17
12
33
23
25
26
46
30
100
100
30
35
57
30
93
83
17
24
16
23
26
32
15
60

High Clouds (% Sky Obscured)

90
87
92
96
100
100
100
100
80
60
40
57
42
62
94
85
56
42
53
31
40
40
40
35

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
3
9
9
9
9
6
3
9
9
6
9
8

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

Precipitation Probability (%)

26
19
16
2
4
19
25
22
29
33
23
63
60
12
22
34
58
95
67
39
69
82
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0.2
1
0.3
0
0
0
0.9
0.7

Wind Speed/Direction (mph)

15
15
14
14
13
12
11
9
6
7
8
9
9
9
9
11
12
13
14
14
15
16
18
20

Chance of Frost

Temperature (°C)

20
21
22
22
23
22
22
21
20
19
19
18
17
16
16
16
16
16
16
15
16
16
17
17

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
63
64
55
54
59
60
63
68
69
62
71
83
90
92
90
92
93
93
92
93
89
86
89

Pressure (mb)

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

Ozone (du)

301
301
300
300
300
301
302
303
305
309
313
321
326
325
325
325
328
327
327
328
330
330
331
331

Monday 31

Waning Gibbous 83%

21:10

No Set

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

Sun - Rise: 06:52, Set: 20:29, Transit: 13:39. Moon - Rise: 21:10, Set: No Set. Civil Dark: 21:04 - 06:16. Nautical Dark: 21:48 - 05:33. Astro Dark: 22:36 - 04:45

Total Clouds (% Sky Obscured)

91
92
87
52
69
77
71
52
63
70
78
86
100
100
100
100
100
100
100
100
100
100
100
95

Low Clouds (% Sky Obscured)

75
45
76
35
51
50
29
0
0
0
1
4
8
11
11
11
11
14
16
19
23
27
31
34

Medium Clouds (% Sky Obscured)

31
16
6
3
0
0
0
0
8
20
25
24
26
38
55
69
88
93
94
97
98
99
100
95

High Clouds (% Sky Obscured)

40
40
13
25
41
49
53
52
63
70
78
86
100
100
73
53
30
13
24
36
49
52
66
92

ISS Passover

Visibility (miles)

3
4
7
8
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
78
50
33
15
3
1
1
1
1
1
1
2
0
6
10
4
15
22
28
32
28
21
39

Precipitation Amount (mm)

0.9
0.5
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
20
20
19
20
19
16
13
11
10
9
9
9
8
8
8
8
8
8
8
8
9
10
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
82
76
72
63
58
57
60
66
77
83
83
83
86
87
89
92
95
93
92
93
82
71
62

Pressure (mb)

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

Ozone (du)

336
338
337
332
329
325
322
319
316
315
313
312
311
311
312
312
311
311
313
314
316
316
316
316

Tuesday 1

Waning Gibbous 74%

21:26

12:13

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

Sun - Rise: 06:53, Set: 20:26, Transit: 13:39. Moon - Rise: 21:26, Set: 12:13. Civil Dark: 21:02 - 06:18. Nautical Dark: 21:45 - 05:35. Astro Dark: 22:33 - 04:47

Total Clouds (% Sky Obscured)

91
86
85
85
85
65
41
19
13
8
2
5
8
11
41
70
100
100
100
100
100
100
100
82

Low Clouds (% Sky Obscured)

38
32
29
28
27
20
14
8
6
3
1
3
5
7
5
2
0
0
0
0
4
8
13
21

Medium Clouds (% Sky Obscured)

91
86
85
85
85
65
39
10
7
4
2
2
3
3
2
1
0
19
38
57
67
77
87
66

High Clouds (% Sky Obscured)

91
86
85
82
72
53
33
13
9
4
0
1
1
1
34
67
100
100
100
100
100
100
100
77

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 (%)

45
42
33
25
9
13
9
1
3
7
3
6
7
5
10
13
1
4
8
13
26
36
49
50

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
12
12
12
11
11
10
8
7
6
7
7
8
8
8
7
7
7
7
8
8
10
12
13

Chance of Frost

Temperature (°C)

20
21
21
21
21
21
20
19
19
18
17
15
15
15
14
14
14
14
14
14
14
15
17
18

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
50
45
46
49
51
54
58
63
66
72
75
78
82
87
86
87
87
82
76
71
64
56
50

Pressure (mb)

1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

318
320
322
323
323
324
326
328
330
328
327
326
325
325
325
326
327
328
329
330
331
332
332
333

Wednesday 2

Waning Gibbous 63%

21:48

13:40

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
06 Bad
07 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)

64
46
37
33
28
44
55
66
71
77
82
88
94
100
100
100
100
98
94
89

Low Clouds (% Sky Obscured)

26
16
8
8
8
7
10
8
13
24
24
34
38
54
45
36
31
47
65
82

Medium Clouds (% Sky Obscured)

45
27
27
26
28
25
21
17
34
50
67
67
65
71
68
73
74
72
69
67

High Clouds (% Sky Obscured)

53
25
12
7
2
21
36
50
44
43
52
68
83
100
100
100
100
88
73
59

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
4
4
5

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

55
60
63
73
61
56
64
71
63
64
49
56
52
34
53
48
48
84
95
95

Precipitation Amount (mm)

0
0.2
0.2
0.4
0.2
0
0.3
0.3
0.2
0.3
0
0.2
0.3
0
0.4
0.2
0
0.4
0.8
1

Wind Speed/Direction (mph)

14
16
17
16
15
14
12
9
7
6
5
6
6
7
8
8
9
10
12
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
6
6
6
7
8
10
12
12
12
11
11
11
11
13
14
15
15
15

Relative Humidity (%)

46
44
41
41
42
42
48
55
65
67
70
72
71
71
69
78
86
95
95
95

Pressure (mb)

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

Ozone (du)

333
333
333
329
326
323
320
318
315
314
313
312
310
308
306
307
307
308
311
314

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

Generated: 27/08/26 12:48:14. Forecast: 27/08/26 to 02/09/26. Timezone: UTC+2.00