Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

02:59

18:49

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

Sun - Rise: 07:21, Set: 19:47, Transit: 13:34. Moon - Rise: 02:59, Set: 18:49. Civil Dark: 20:19 - 06:48. Nautical Dark: 20:58 - 06:09. Astro Dark: 21:39 - 05:28

Total Clouds (% Sky Obscured)

47
53
85
85
85
67
42
49
52
41
29
56
79
52
85
77
77
41
41
21
13
21
34
23

Low Clouds (% Sky Obscured)

54
59
63
70
25
70
42
49
52
41
29
56
79
52
83
77
74
41
41
21
13
21
27
23

Medium Clouds (% Sky Obscured)

2
4
0
0
0
0
0
0
0
0
0
0
0
0
5
0
0
0
0
0
0
0
9
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
1
2
1

ISS Passover

Visibility (miles)

-
-
-
-
-
-
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

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)

9
9
8
8
8
9
8
8
8
11
13
13
14
14
14
14
13
13
11
7
5
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
74
75
80
81
75
78
76
67
63
61
57
52
49
48
47
46
49
56
68
73
77
74

Pressure (mb)

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

Ozone (du)

259
261
260
259
259
258
257
258
258
258
258
257
257
257
258
259
258
257
257
257
256
255
256
256

Friday 19

Waning Crescent 6%

04:20

19:04

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

Sun - Rise: 07:23, Set: 19:44, Transit: 13:33. Moon - Rise: 04:20, Set: 19:04. Civil Dark: 20:17 - 06:50. Nautical Dark: 20:56 - 06:11. Astro Dark: 21:37 - 05:30

Total Clouds (% Sky Obscured)

15
8
22
26
28
32
28
18
4
10
9
20
60
16
4
8
2
0
0
62
40
90
74
6

Low Clouds (% Sky Obscured)

7
8
22
26
28
30
28
18
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
4
6

High Clouds (% Sky Obscured)

5
0
0
2
2
28
8
3
4
10
9
20
56
16
4
8
2
0
0
62
40
89
74
6

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)

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

Chance of Frost

Temperature (°C)

16
15
14
14
14
13
13
13
13
16
20
22
24
25
27
28
28
28
27
25
22
20
20
19

Feels Like (°C)

16
15
14
14
13
13
11
12
12
14
17
20
22
24
24
24
24
24
24
23
20
18
18
17

Dew Point (°C)

11
10
9
8
8
7
6
6
6
6
7
7
7
6
6
7
7
8
9
12
13
13
13
13

Relative Humidity (%)

74
70
69
67
67
65
63
62
60
54
44
37
32
29
27
27
26
28
33
44
55
62
66
67

Pressure (mb)

1024
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022
1021
1020
1020
1019
1019
1019
1019
1019
1019
1019

Ozone (du)

256
256
256
256
257
258
257
257
257
256
256
255
255
256
256
255
255
254
253
253
253
253
253
254

Saturday 20

Waning Crescent 2%

05:37

19:16

00 OK
01 OK
02 Good
03 OK
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 Bad
23 Bad

Sun - Rise: 07:24, Set: 19:42, Transit: 13:33. Moon - Rise: 05:37, Set: 19:16. Civil Dark: 20:15 - 06:51. Nautical Dark: 20:54 - 06:13. Astro Dark: 21:34 - 05:32

Total Clouds (% Sky Obscured)

26
28
7
29
55
90
99
67
100
100
94
99
99
100
100
100
100
100
97
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
42
24
49
77
63

Medium Clouds (% Sky Obscured)

26
16
5
19
36
77
86
57
30
31
34
66
76
99
88
86
68
50
31
44
36
29
41
100

High Clouds (% Sky Obscured)

7
3
7
9
18
71
68
27
100
100
88
99
99
100
97
100
99
77
85
100
100
100
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
2
1
0
3
0
0
0
0
1
1
3
2
4
17
7
4
10
23
42
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)

8
8
8
8
8
8
9
9
9
11
13
14
15
15
15
15
12
10
9
9
8
7
6
6

Chance of Frost

Temperature (°C)

19
19
19
19
19
19
20
20
20
21
23
24
25
26
26
27
26
26
25
24
23
22
21
20

Feels Like (°C)

18
18
19
19
18
19
19
19
19
19
20
22
22
23
22
23
24
25
25
24
22
22
21
21

Dew Point (°C)

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

Relative Humidity (%)

68
70
73
73
73
73
72
70
69
58
49
42
39
32
34
36
48
49
51
59
64
70
74
76

Pressure (mb)

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

Ozone (du)

253
254
253
253
252
253
253
254
253
253
253
253
252
252
252
252
253
252
252
252
252
253
252
253

Sunday 21

New Moon 0%

06:51

19:27

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 Bad
23 Bad

Sun - Rise: 07:26, Set: 19:40, Transit: 13:33. Moon - Rise: 06:51, Set: 19:27. Civil Dark: 20:12 - 06:53. Nautical Dark: 20:51 - 06:14. Astro Dark: 21:32 - 05:34

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
82

Low Clouds (% Sky Obscured)

72
69
46
24
1
0
4
10
17
24
30
32
41
47
47
43
40
52
63
74
74
75
75
61

Medium Clouds (% Sky Obscured)

91
99
99
99
99
99
100
100
100
100
100
100
99
99
99
100
100
98
34
93
88
84
84
82

High Clouds (% Sky Obscured)

100
95
96
98
100
100
100
100
100
100
100
98
100
100
100
100
100
100
100
100
100
99
100
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
4
3
2
4
9
1
2
4
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
None
Light Rain
Very Light Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None

Precipitation Probability (%)

13
8
7
7
6
74
93
95
95
95
95
89
95
95
95
84
42
10
7
2
2
3
14
50

Precipitation Amount (mm)

0
0
0
0
0
0.5
0.3
2.7
2.6
1.5
1.2
0.5
1.6
4
1.7
0.5
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

82
84
81
77
75
77
86
90
95
95
95
93
93
93
96
95
93
92
92
90
92
92
92
87

Pressure (mb)

1013
1013
1013
1013
1012
1012
1012
1013
1012
1013
1013
1013
1013
1013
1014
1013
1013
1013
1013
1013
1013
1014
1014
1014

Ozone (du)

253
254
255
254
255
255
255
256
257
257
258
259
259
260
260
261
263
265
268
269
270
270
272
271

Monday 22

Waxing Crescent 1%

08:04

19:38

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 Bad
23 Bad

Sun - Rise: 07:27, Set: 19:38, Transit: 13:32. Moon - Rise: 08:04, Set: 19:38. Civil Dark: 20:10 - 06:55. Nautical Dark: 20:49 - 06:16. Astro Dark: 21:29 - 05:36

Total Clouds (% Sky Obscured)

66
48
41
37
40
48
60
67
71
75
79
76
68
68
62
55
48
39
31
40
91
87
83
86

Low Clouds (% Sky Obscured)

46
31
21
10
0
13
27
46
52
61
67
67
63
63
54
48
39
37
10
9
39
44
49
39

Medium Clouds (% Sky Obscured)

66
48
41
37
40
48
50
55
50
60
65
37
0
0
1
2
5
4
31
40
86
82
73
74

High Clouds (% Sky Obscured)

33
0
0
0
5
5
5
10
5
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
2
2
1
5
9
3
3
8
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
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

29
54
95
95
95
95
81
95
95
89
43
20
11
7
19
11
26
30
34
39
45
47
47
50

Precipitation Amount (mm)

0
0
0.8
2.3
4.3
2.9
0.3
0.8
1.4
0.8
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

12
12
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
11
11
11
11
11
12
12

Relative Humidity (%)

89
90
90
96
98
98
98
98
96
96
95
92
87
79
74
72
68
67
68
75
83
86
92
96

Pressure (mb)

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

Ozone (du)

271
271
271
269
269
268
271
273
274
275
276
278
280
282
283
283
284
285
286
288
289
291
292
294

Tuesday 23

Waxing Crescent 3%

09:15

19:49

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 Bad
23 Bad

Sun - Rise: 07:29, Set: 19:35, Transit: 13:32. Moon - Rise: 09:15, Set: 19:49. Civil Dark: 20:08 - 06:56. Nautical Dark: 20:47 - 06:18. Astro Dark: 21:27 - 05:38

Total Clouds (% Sky Obscured)

90
94
95
96
97
98
99
100
100
100
100
99
98
97
97
97
96
98
99
100
100
100
100
92

Low Clouds (% Sky Obscured)

29
19
33
45
63
62
61
65
63
66
67
83
89
89
89
89
89
90
91
91
80
76
74
62

Medium Clouds (% Sky Obscured)

76
79
84
89
94
96
98
100
100
100
100
74
49
26
21
15
10
10
5
5
26
46
67
58

High Clouds (% Sky Obscured)

0
0
0
0
25
15
5
10
18
42
47
42
42
46
64
68
73
78
83
88
93
96
100
77

ISS Passover

Visibility (miles)

7
4
1
1
0
0
1
3
4
6
7
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

43
32
52
64
67
91
95
95
93
85
85
78
74
70
80
89
95
89
82
70
56
40
17
36

Precipitation Amount (mm)

0
0
0
0.3
0.4
0.6
0.8
0.9
0.6
0.5
0.6
0.5
0.4
0.4
0.6
0.7
0.7
0.6
0.5
0.4
0.2
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
13
12
10
10
10
10
10
11
10
11
10
11
10
10
13
13
12
12
13
13
8
9
9

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
100
98
98
98
96
96
95
92
89
83
78
73
71
69
68
72
79
86
85
87
85

Pressure (mb)

1016
1016
1016
1016
1016
1015
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016

Ozone (du)

295
296
297
299
302
304
303
303
302
303
304
305
306
306
307
308
309
310
311
312
313
314
315
317

Wednesday 24

Waxing Crescent 7%

10:27

20:02

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 Good

Sun - Rise: 07:30, Set: 19:33, Transit: 13:32. Moon - Rise: 10:27, Set: 20:02. Civil Dark: 20:06 - 06:58. Nautical Dark: 20:44 - 06:19. Astro Dark: 21:24 - 05:39

Total Clouds (% Sky Obscured)

83
75
81
91
96
92
86
81
73
69
64
65
66
67
79
84
88
90
91
93
72
48
20
17

Low Clouds (% Sky Obscured)

46
29
43
56
70
64
58
55
54
52
50
52
54
54
61
69
74
71
68
65
51
38
20
17

Medium Clouds (% Sky Obscured)

51
44
45
44
44
44
43
42
27
15
6
9
16
30
32
40
43
40
29
19
6
4
2
2

High Clouds (% Sky Obscured)

51
32
20
18
15
25
45
50
50
50
51
61
61
62
20
5
3
2
1
0
1
1
1
0

ISS Passover

Visibility (miles)

9
9
9
8
6
5
6
8
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 (%)

30
13
32
34
36
35
32
27
24
21
19
17
15
11
10
9
6
14
16
16
17
15
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)

4
4
4
4
5
6
6
6
6
7
8
10
11
12
13
13
13
13
12
10
9
8
7
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

9
9
10
8
8
8
8
8
9
9
9
9
9
10
11
14
14
12
12
12
12
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

87
88
90
90
93
93
93
91
91
80
72
63
57
51
46
47
48
50
54
58
63
68
76
84

Pressure (mb)

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

Ozone (du)

318
319
320
322
323
324
324
324
323
322
321
319
318
316
315
313
311
310
307
305
302
301
301
300

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

Generated: 18/09/25 06:03:53. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00