Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 10

Waning Crescent 1%

06:07

19:45

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

Sun - Rise: 07:10, Set: 20:07, Transit: 13:39. Moon - Rise: 06:07, Set: 19:45. Civil Dark: 20:41 - 06:37. Nautical Dark: 21:21 - 05:57. Astro Dark: 22:04 - 05:14

Total Clouds (% Sky Obscured)

19
13
25
36
44
47
37
33
20
11
11
32
56
63
52
55
64
87
57
49
83
36
100
100

Low Clouds (% Sky Obscured)

5
13
25
35
29
27
23
23
16
8
9
27
50
34
25
25
19
19
20
41
38
27
34
27

Medium Clouds (% Sky Obscured)

0
0
4
5
7
11
1
0
0
0
0
0
15
22
21
24
21
19
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
54
38
33
8
50
3
100
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
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)

3
3
3
3
3
4
4
4
4
5
5
6
5
5
5
5
5
5
5
4
4
3
4
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
14
12
11
10
9
9
9
9
11
14
16
17
17
19
19
19
19
17
17
17
14
14
12

Dew Point (°C)

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

Relative Humidity (%)

80
81
83
83
81
80
78
80
77
67
59
52
46
42
37
35
34
34
34
40
45
48
52
65

Pressure (mb)

1019
1019
1019
1020
1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1020
1019
1018
1018
1018
1018
1018
1018
1019
1019

Ozone (du)

340
338
337
336
335
334
334
333
333
331
330
325
323
321
318
317
317
318
317
319
318
315
313
311

Friday 11

New Moon 0%

07:29

19:58

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
20 Bad
21 Bad
22 OK
23 OK

Sun - Rise: 07:12, Set: 20:05, Transit: 13:39. Moon - Rise: 07:29, Set: 19:58. Civil Dark: 20:38 - 06:39. Nautical Dark: 21:18 - 05:59. Astro Dark: 22:01 - 05:16

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
100
100
98
100
99
91
91
83
87
100
100
94
100
97
49
75
28
38

Low Clouds (% Sky Obscured)

19
7
14
44
67
65
77
90
98
100
98
91
83
70
76
100
66
57
21
26
17
21
26
29

Medium Clouds (% Sky Obscured)

0
0
3
97
100
95
99
100
81
60
36
31
29
26
28
42
31
15
20
23
3
11
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
93
9
0
0
0
0
0
0
0
70
72
66
75
99
80
25
70
6
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
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
None
None
None
None
None
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
0
2
8
14
30
47
36
18
7
2
4
21
46
44
29
22
25
18
10
1
0
0

Precipitation Amount (mm)

0
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

Wind Speed/Direction (mph)

2
2
3
4
4
5
5
5
6
7
8
9
10
10
10
10
8
6
5
4
4
4
3
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
12
11
11
10
10
10
11
11
11
11
12
13
15
18
18
18
18
19
19
17
17
16
16

Dew Point (°C)

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

Relative Humidity (%)

72
74
72
72
70
67
66
65
65
66
63
62
66
64
59
61
78
81
70
73
76
81
83
84

Pressure (mb)

1019
1019
1019
1019
1018
1018
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1022
1023
1023
1023

Ozone (du)

310
309
312
313
314
317
315
317
321
320
319
318
316
315
313
309
309
310
313
315
316
316
314
312

Saturday 12

Waxing Crescent 2%

08:48

20:11

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 OK
14 OK
15 Bad
16 OK
17 Bad
18 Bad
19 OK
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 07:14, Set: 20:03, Transit: 13:38. Moon - Rise: 08:48, Set: 20:11. Civil Dark: 20:36 - 06:40. Nautical Dark: 21:16 - 06:00. Astro Dark: 21:58 - 05:18

Total Clouds (% Sky Obscured)

49
56
60
89
100
100
100
93
80
87
80
99
76
39
36
53
45
50
61
43
55
69
77
76

Low Clouds (% Sky Obscured)

32
50
45
40
40
40
35
40
41
47
45
62
51
38
36
35
28
13
0
8
12
18
11
15

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
4
4
4
3
3
14
30
22
14
16
44
23

High Clouds (% Sky Obscured)

1
1
4
30
35
37
59
54
33
60
50
94
59
12
3
33
21
25
3
9
18
29
43
58

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
3
100
100
100
90
93
87
7
2
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)

1
1
2
2
3
3
3
4
4
5
6
7
8
8
8
9
9
9
8
7
6
6
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
87
89
89
89
89
90
89
80
74
66
59
49
41
38
36
36
38
43
52
57
61
68

Pressure (mb)

1023
1024
1024
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1021
1021
1021
1022
1022
1022

Ozone (du)

310
308
306
303
301
299
297
296
294
293
293
293
294
293
294
294
295
295
295
295
296
297
297
297

Sunday 13

Waxing Crescent 7%

10:06

20:25

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 OK
20 OK
21 OK
22 OK
23 Bad

Sun - Rise: 07:15, Set: 20:01, Transit: 13:38. Moon - Rise: 10:06, Set: 20:25. Civil Dark: 20:34 - 06:42. Nautical Dark: 21:14 - 06:02. Astro Dark: 21:56 - 05:20

Total Clouds (% Sky Obscured)

92
94
96
98
100
100
100
100
100
100
100
100
98
99
97
89
96
98
97
44
38
43
45
60

Low Clouds (% Sky Obscured)

9
13
15
18
16
43
81
88
77
72
76
63
70
83
92
76
88
91
90
17
17
16
16
20

Medium Clouds (% Sky Obscured)

21
89
80
91
93
94
96
93
97
69
97
92
82
89
24
21
25
22
15
12
11
8
5
11

High Clouds (% Sky Obscured)

66
66
79
90
100
100
100
100
100
100
66
42
25
0
18
35
53
51
46
44
31
33
28
43

ISS Passover

Visibility (miles)

9
9
9
9
9
9
8
9
9
9
9
9
9
4
5
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
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
8
15
18
33
43
48
57
54
55
66
60
59
37
27
18
18
15
11
4
4
2
0
1

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

74
78
79
83
82
87
89
89
92
90
87
78
70
66
65
65
61
64
63
57
64
70
77
85

Pressure (mb)

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

Ozone (du)

297
295
296
296
299
300
303
304
306
306
308
309
309
309
308
310
311
311
305
302
301
299
298
295

Monday 14

Waxing Crescent 13%

11:24

20:41

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

Sun - Rise: 07:17, Set: 19:58, Transit: 13:38. Moon - Rise: 11:24, Set: 20:41. Civil Dark: 20:31 - 06:44. Nautical Dark: 21:11 - 06:04. Astro Dark: 21:53 - 05:22

Total Clouds (% Sky Obscured)

95
97
97
96
96
94
61
63
60
58
55
59
56
58
45
32
22
23
21
20
13
14
13
25

Low Clouds (% Sky Obscured)

23
28
27
30
33
37
36
39
37
35
36
36
36
32
25
18
10
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

18
21
13
7
5
7
13
13
12
14
13
19
26
24
21
13
6
9
11
14
13
14
13
14

High Clouds (% Sky Obscured)

78
74
68
47
43
32
7
5
3
5
3
4
3
2
2
2
2
3
2
3
2
1
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
1
0
0
1
0
0
0
1
1
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

17
16
16
16
15
15
15
16
17
19
20
21
23
24
24
25
24
25
25
26
26
21
21
21

Dew Point (°C)

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

Relative Humidity (%)

89
89
89
89
90
90
90
90
90
82
73
66
56
48
42
40
38
36
40
44
47
49
51
53

Pressure (mb)

1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024
1024
1024
1024
1024
1023
1023
1022
1022
1022
1022
1022
1022
1023

Ozone (du)

294
293
292
290
290
288
286
285
283
281
280
278
277
277
277
277
277
277
279
281
282
283
283
283

Tuesday 15

Waxing Crescent 21%

12:41

21:01

00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
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

Sun - Rise: 07:18, Set: 19:56, Transit: 13:37. Moon - Rise: 12:41, Set: 21:01. Civil Dark: 20:29 - 06:45. Nautical Dark: 21:09 - 06:06. Astro Dark: 21:50 - 05:24

Total Clouds (% Sky Obscured)

33
43
41
44
39
37
32
27
30
34
43
58
69
70
67
60
50
60
70
88
91
93
94
87

Low Clouds (% Sky Obscured)

1
1
6
10
15
13
9
6
8
14
20
12
8
4
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

15
13
14
8
4
4
2
2
3
3
4
4
14
20
20
12
0
0
0
0
6
10
9
9

High Clouds (% Sky Obscured)

2
3
5
7
9
9
7
7
5
3
0
25
50
70
49
27
14
36
63
88
91
88
79
52

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
Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
1
2
2
30
52
72
86
87
77
36
10
2
5
7
8
5

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.6
0.6
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

20
19
19
17
17
17
17
17
17
17
18
18
18
18
17
24
23
22
23
24
26
19
19
20

Dew Point (°C)

8
8
8
8
8
8
8
8
9
9
8
8
7
5
3
3
2
1
2
4
5
5
5
6

Relative Humidity (%)

53
55
56
57
58
59
60
61
62
53
46
41
36
31
27
26
24
23
27
31
35
37
39
41

Pressure (mb)

1022
1022
1022
1021
1021
1020
1020
1020
1019
1019
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1017
1017
1017
1018

Ozone (du)

284
284
285
284
284
284
284
284
284
280
277
273
272
271
270
269
268
267
270
273
276
278
280
281

Wednesday 16

Waxing Crescent 30%

13:55

21:27

Sun - Rise: 07:20, Set: 19:54, Transit: 13:37. Moon - Rise: 13:55, Set: 21:27. Civil Dark: 20:27 - 06:47. Nautical Dark: 21:06 - 06:07. Astro Dark: 21:48 - 05:26

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Brussels, Bruxelles-Capitale, Kingdom of Belgium (50.85,4.35)

Generated: 10/09/26 00:18:48. Forecast: 10/09/26 to 16/09/26. Timezone: UTC+2.00