Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 12%

02:59

18:29

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

Sun - Rise: 07:21, Set: 19:49, Transit: 13:34. Moon - Rise: 02:59, Set: 18:29. Civil Dark: 20:22 - 06:48. Nautical Dark: 21:01 - 06:09. Astro Dark: 21:42 - 05:28

Total Clouds (% Sky Obscured)

69
58
56
55
45
46
38
39
24
0
26
25
50
27
50
56
75
68
57
59
83
59
68
37

Low Clouds (% Sky Obscured)

39
51
55
47
45
46
38
39
24
0
25
25
50
27
50
56
75
68
57
51
83
59
68
37

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
23
0
0
0
0

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
1

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
0
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)

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

Chance of Frost

Temperature (°C)

19
18
17
16
15
15
15
15
15
15
15
14
15
14
15
16
17
18
19
20
21
22
22
22

Feels Like (°C)

16
17
16
16
15
15
14
14
14
14
14
14
14
14
14
15
16
17
18
19
20
21
21
21

Dew Point (°C)

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

Relative Humidity (%)

49
53
61
68
74
78
79
79
79
79
80
80
79
79
78
69
64
59
53
49
45
42
41
40

Pressure (mb)

1020
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021

Ozone (du)

248
249
249
251
252
252
253
253
254
253
253
252
252
253
252
253
254
254
254
254
255
255
255
255

Thursday 18

Waning Crescent 6%

04:20

18:49

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

Sun - Rise: 07:23, Set: 19:47, Transit: 13:33. Moon - Rise: 04:20, Set: 18:49. Civil Dark: 20:19 - 06:50. Nautical Dark: 20:58 - 06:11. Astro Dark: 21:39 - 05:30

Total Clouds (% Sky Obscured)

26
19
0
1
1
0
0
0
0
0
0
0
4
8
94
21
71
82
96
29
10
1
12
20

Low Clouds (% Sky Obscured)

26
19
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
0
0
0
0
0

Medium 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

High Clouds (% Sky Obscured)

1
1
0
1
1
0
0
0
0
0
0
0
0
8
94
21
64
71
83
24
10
1
12
19

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
0
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)

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

Chance of Frost

Temperature (°C)

22
21
19
18
17
17
17
16
16
15
15
15
15
15
15
17
19
21
23
24
26
26
26
26

Feels Like (°C)

21
22
19
19
18
18
17
16
15
15
15
14
14
13
14
15
17
20
21
22
24
23
24
23

Dew Point (°C)

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

Relative Humidity (%)

41
49
59
65
70
72
73
70
68
67
65
64
61
60
58
53
43
37
32
29
26
24
23
25

Pressure (mb)

1021
1022
1022
1022
1023
1023
1023
1023
1023
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1021
1020
1020
1019
1019

Ozone (du)

256
255
254
254
254
253
254
254
254
254
254
254
253
253
252
252
251
250
250
250
250
251
252
253

Friday 19

Waning Crescent 2%

05:37

19:04

18 Bad
19 Good
20 Good
21 Good
22 Good
23 OK
00 Good
01 OK
02 Good
03 Bad
04 OK
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

Sun - Rise: 07:24, Set: 19:44, Transit: 13:33. Moon - Rise: 05:37, Set: 19:04. Civil Dark: 20:17 - 06:51. Nautical Dark: 20:56 - 06:13. Astro Dark: 21:37 - 05:32

Total Clouds (% Sky Obscured)

78
5
10
1
3
48
10
47
13
80
40
100
100
100
100
100
92
100
100
100
99
98
97
98

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
25
51
78
69

Medium Clouds (% Sky Obscured)

1
5
10
1
3
13
10
25
13
80
40
73
81
65
53
78
29
97
89
81
91
91
92
94

High Clouds (% Sky Obscured)

78
5
10
1
2
34
1
23
4
18
27
100
100
98
100
100
81
93
99
100
75
54
35
57

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
0
0
0
0
2
0
0
0
0
3
1
4
10
8
7
4
7
9
9
20

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)

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

Chance of Frost

Temperature (°C)

25
23
21
20
19
19
19
19
19
19
19
20
20
20
19
20
21
23
24
25
26
26
25
24

Feels Like (°C)

24
21
20
18
19
18
18
18
18
17
17
17
17
17
17
18
18
20
22
22
23
23
20
22

Dew Point (°C)

7
10
12
13
13
13
13
13
13
13
13
12
12
12
12
12
11
9
9
9
9
9
12
15

Relative Humidity (%)

31
42
56
63
69
70
70
70
69
67
66
60
60
60
61
58
50
42
39
36
34
35
44
57

Pressure (mb)

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

Ozone (du)

252
252
251
252
252
252
253
252
251
251
251
252
251
252
251
251
252
251
251
251
251
250
251
251

Saturday 20

Waning Crescent 0%

06:51

19:16

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 07:26, Set: 19:42, Transit: 13:33. Moon - Rise: 06:51, Set: 19:16. Civil Dark: 20:15 - 06:53. Nautical Dark: 20:54 - 06:14. Astro Dark: 21:34 - 05:34

Total Clouds (% Sky Obscured)

99
97
89
100
100
99
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
92

Low Clouds (% Sky Obscured)

58
41
47
59
72
71
62
58
38
21
0
8
17
25
34
43
53
52
50
49
40
32
23
31

Medium Clouds (% Sky Obscured)

96
59
31
33
100
80
25
85
90
95
100
100
100
100
99
97
96
97
98
100
93
85
73
72

High Clouds (% Sky Obscured)

66
72
74
100
100
96
93
100
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
68

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
5
2
3
2
4
7
7
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
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

25
21
32
38
36
28
16
4
21
95
95
95
95
95
95
65
57
24
18
5
7
4
2
8

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.7
0.8
3
3.4
2.8
0.5
0.3
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
21
20
19
19
18
17
16
16
15
15
14
14
14
14
14
14
15
15
15
15
16
16
17

Feels Like (°C)

22
22
21
20
18
17
16
15
15
14
14
13
14
13
11
13
13
14
14
14
14
14
14
15

Dew Point (°C)

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

Relative Humidity (%)

70
74
79
78
75
70
73
77
74
72
89
95
96
96
93
95
93
92
89
86
86
82
72
67

Pressure (mb)

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

Ozone (du)

251
252
254
253
253
254
253
253
253
252
255
255
256
255
255
255
256
257
257
257
258
259
260
263

Sunday 21

New Moon 1%

08:04

19:27

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 07:27, Set: 19:40, Transit: 13:32. Moon - Rise: 08:04, Set: 19:27. Civil Dark: 20:12 - 06:55. Nautical Dark: 20:51 - 06:16. Astro Dark: 21:32 - 05:36

Total Clouds (% Sky Obscured)

86
75
56
88
93
89
84
82
77
74
73
81
91
100
72
66
60
74
82
91
89
90
88
88

Low Clouds (% Sky Obscured)

40
43
51
57
78
64
62
49
58
60
63
54
42
40
58
49
40
52
61
75
73
68
69
60

Medium Clouds (% Sky Obscured)

20
16
22
19
76
36
67
79
73
63
56
74
86
98
54
58
60
74
82
89
73
54
36
53

High Clouds (% Sky Obscured)

37
9
1
5
5
0
0
0
7
13
20
47
73
100
0
0
0
0
0
0
0
0
0
4

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

5
4
4
3
0
1
5
27
42
42
95
95
87
73
67
56
41
41
39
37
39
39
34
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.8
0.8
0.4
0.5
0.4
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
6
6
7
8
9
8
8
8
8
7
6
6
5
5
2
3
4
6
6
7
6
7
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
68
76
80
86
83
83
79
80
87
89
95
96
96
95
95
93
92
89
87
85
83
80
79

Pressure (mb)

1016
1016
1016
1016
1016
1016
1017
1016
1017
1017
1016
1017
1017
1017
1017
1015
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

265
266
267
267
269
269
270
270
270
272
274
274
276
277
277
278
279
280
282
284
285
286
287
287

Monday 22

Waxing Crescent 3%

09:15

19:38

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
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad

Sun - Rise: 07:29, Set: 19:38, Transit: 13:32. Moon - Rise: 09:15, Set: 19:38. Civil Dark: 20:10 - 06:56. Nautical Dark: 20:49 - 06:18. Astro Dark: 21:29 - 05:38

Total Clouds (% Sky Obscured)

84
79
79
79
81
87
95
99
95
90
84
81
80
78
77
79
81
87
94
100
100
100
100
94

Low Clouds (% Sky Obscured)

53
51
55
60
65
68
69
66
62
57
52
43
35
29
35
48
62
73
83
95
95
95
96
84

Medium Clouds (% Sky Obscured)

69
79
79
79
81
87
95
97
79
61
42
35
24
16
27
39
50
67
84
98
95
93
90
77

High Clouds (% Sky Obscured)

3
8
5
14
9
35
64
88
62
40
15
15
14
12
7
4
1
2
3
5
7
11
15
9

ISS Passover

Visibility (miles)

3
3
2
5
7
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
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

54
61
66
67
63
61
57
53
46
36
19
20
20
17
22
20
9
41
65
85
78
69
59
56

Precipitation Amount (mm)

0.2
0.3
0.4
0.3
0.2
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.7
0.5
0.3
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
15
12
12
12
11
12
12
10
10
9
10
10
9
9
9
9
10
10
11
11
11
10

Dew Point (°C)

12
12
12
12
12
12
12
11
11
10
10
9
9
9
9
9
10
10
10
10
10
10
9
9

Relative Humidity (%)

83
87
92
93
95
95
95
93
95
93
95
95
96
96
96
90
86
80
80
80
81
79
75
71

Pressure (mb)

1015
1015
1016
1016
1016
1017
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1015
1015
1015

Ozone (du)

291
294
298
300
301
303
303
303
303
303
304
305
306
306
306
306
306
306
307
308
309
310
311
312

Tuesday 23

Waxing Crescent 7%

10:27

19:49

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
13 Bad

Sun - Rise: 07:30, Set: 19:35, Transit: 13:32. Moon - Rise: 10:27, Set: 19:49. Civil Dark: 20:08 - 06:58. Nautical Dark: 20:47 - 06:19. Astro Dark: 21:27 - 05:39

Total Clouds (% Sky Obscured)

88
81
78
77
75
68
61
53
65
72
79
77
74
69
63
62
66
70
74
90

Low Clouds (% Sky Obscured)

73
73
72
72
72
60
49
36
40
46
51
55
59
62
59
57
53
50
45
43

Medium Clouds (% Sky Obscured)

60
42
29
16
8
6
6
5
12
26
43
37
27
21
13
12
10
24
37
50

High Clouds (% Sky Obscured)

3
0
0
0
0
7
13
20
19
14
13
12
11
10
7
5
1
8
11
13

ISS Passover

Visibility (miles)

8
9
9
9
9
9
9
9
9
9
9
9
7
5
3
5
7
9
9
9

Fog (%)

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

Precipitation Probability (%)

50
31
30
23
5
8
6
1
16
12
6
31
30
27
39
39
30
29
24
17

Precipitation Amount (mm)

0
0
0
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
5
5
5
5
5
5
5
5
6
6
6
7
8
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
75
76
80
84
87
88
91
93
95
93
93
93
93
95
91
89
86
79
72

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

312
312
312
313
314
314
314
314
313
314
315
316
317
317
318
318
319
319
318
318

Forecast for Elst, Flemish Brabant, Kingdom of Belgium (50.77,4.89)

Generated: 17/09/25 18:38:05. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+2.00