Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 20

New Moon 2%

09:48

17:09

19 Good
20 OK
21 OK
22 Bad
23 OK
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 OK
17 OK
18 OK

Sun - Rise: 08:11, Set: 17:03, Transit: 12:37. Moon - Rise: 09:48, Set: 17:09. Civil Dark: 17:38 - 07:35. Nautical Dark: 18:17 - 06:56. Astro Dark: 18:55 - 06:18

Total Clouds (% Sky Obscured)

8
43
34
62
45
60
54
76
50
62
80
53
50
62
88
83
73
82
64
51
46
41
28
33

Low Clouds (% Sky Obscured)

0
0
0
41
45
60
54
76
49
60
69
53
50
62
88
83
73
82
64
51
46
41
28
33

Medium Clouds (% Sky Obscured)

8
35
34
49
17
7
1
1
2
3
11
0
0
0
2
3
0
0
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
0
0
0
0
0
0
0
0
0

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
5
6
1
2
8
13
5
2
1
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
3
4
4
4
4
4
4
4
4
4
5
4
4
5
6
9
11
11
9
8
6

Chance of Frost

Temperature (°C)

2
1
0
-0
-0
-0
-1
-1
-1
-1
-1
-1
-1
-1
-1
1
3
4
5
5
5
5
4
3

Feels Like (°C)

-1
-1
-1
-3
-4
-4
-3
-3
-2
-3
-3
-4
-4
-4
-3
-0
1
1
2
1
2
2
2
1

Dew Point (°C)

-6
-6
-6
-6
-6
-6
-6
-6
-5
-5
-4
-4
-4
-4
-4
-3
-2
-1
-1
-1
-0
0
-1
-2

Relative Humidity (%)

59
61
62
63
63
66
67
67
70
72
75
78
78
80
80
76
73
72
67
65
67
70
73
74

Pressure (mb)

1015
1016
1016
1017
1017
1018
1018
1018
1018
1018
1019
1019
1020
1020
1021
1022
1022
1023
1023
1023
1024
1025
1025
1026

Ozone (du)

343
343
343
343
338
331
330
334
338
341
340
342
342
341
341
340
333
330
326
322
319
314
311
307

Friday 21

Waxing Crescent 5%

10:49

17:55

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

Sun - Rise: 08:12, Set: 17:02, Transit: 12:37. Moon - Rise: 10:49, Set: 17:55. Civil Dark: 17:37 - 07:37. Nautical Dark: 18:17 - 06:57. Astro Dark: 18:54 - 06:20

Total Clouds (% Sky Obscured)

55
43
9
13
0
21
24
41
40
20
24
80
92
100
100
99
68
94
97
84
82
97
79
96

Low Clouds (% Sky Obscured)

55
43
9
13
0
21
24
35
13
15
17
27
30
29
0
10
15
17
0
21
7
6
7
30

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
15
3
76
100
66
76
65
93
97
82
82
82
79
94

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
28
40
16
24
61
83
100
100
96
29
28
20
20
28
90
7
15

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
5
27
45
1
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
1
6

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
3
2
2
2
2
2
1
2
2
3
3
4
4
5
6
8
9
9
10
9
10
11
11

Chance of Frost

Temperature (°C)

2
1
0
0
-0
-1
-1
-1
-2
-2
-2
-2
-2
-2
-2
-1
1
3
3
4
4
4
3
2

Feels Like (°C)

0
1
-1
-0
-1
-1
-1
-2
-4
-4
-4
-5
-4
-5
-5
-4
-3
-2
-2
-1
-1
-2
-3
-3

Dew Point (°C)

-3
-3
-4
-4
-4
-4
-5
-5
-6
-6
-7
-7
-7
-7
-7
-7
-7
-6
-7
-8
-7
-7
-7
-7

Relative Humidity (%)

74
75
75
77
77
77
75
74
72
71
69
69
69
67
64
61
56
51
46
44
45
47
49
50

Pressure (mb)

1027
1028
1028
1029
1029
1029
1029
1029
1029
1028
1028
1028
1028
1028
1028
1028
1028
1027
1026
1025
1024
1024
1023
1022

Ozone (du)

304
300
297
295
292
290
291
292
284
273
269
273
276
281
288
298
304
305
305
305
306
303
298
293

Saturday 22

Waxing Crescent 10%

11:39

18:52

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
18 Bad

Sun - Rise: 08:14, Set: 17:01, Transit: 12:37. Moon - Rise: 11:39, Set: 18:52. Civil Dark: 17:37 - 07:38. Nautical Dark: 18:16 - 06:59. Astro Dark: 18:54 - 06:21

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
98
98
88
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

50
70
84
96
100
100
100
92
100
90
93
100
100
100
96
96
76
78
75
71
68
63
58
53

Medium Clouds (% Sky Obscured)

73
75
76
70
65
95
100
97
94
93
91
32
30
13
9
47
88
100
97
36
94
94
97
100

High Clouds (% Sky Obscured)

9
67
100
100
100
100
100
100
100
77
92
2
14
5
15
15
20
25
50
77
100
100
100
100

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
34
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

23
52
59
42
72
95
95
81
47
20
39
52
44
21
1
29
75
18
71
77
48
39
41
32

Precipitation Amount (mm)

0
0.3
0.3
0
0.3
0.9
0.6
0.4
0
0
0
0
0
0
0
0
0.4
0
0.3
0.6
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-4
-4
-4
-4
-4
-4
-4
-3
-3
-2
-2
-2
-3
-1
-1
0
1
1
4
5
6
6
6

Dew Point (°C)

-8
-7
-4
-5
-5
-5
-4
-3
-1
-0
0
1
1
1
1
2
2
4
5
6
8
9
9
8

Relative Humidity (%)

51
54
65
65
61
64
70
74
81
82
82
86
88
85
86
85
85
88
87
91
96
96
98
96

Pressure (mb)

1021
1021
1020
1019
1018
1017
1016
1015
1014
1013
1012
1011
1010
1009
1009
1008
1007
1007
1005
1004
1003
1002
1002
1001

Ozone (du)

291
291
286
281
282
279
279
280
280
280
278
277
274
273
270
270
272
272
272
273
273
271
271
273

Sunday 23

Waxing Crescent 17%

12:18

No Set

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
18 Bad

Sun - Rise: 08:15, Set: 17:00, Transit: 12:38. Moon - Rise: 12:18, Set: No Set. Civil Dark: 17:36 - 07:39. Nautical Dark: 18:15 - 07:00. Astro Dark: 18:53 - 06:22

Total Clouds (% Sky Obscured)

97
95
93
81
69
61
69
75
80
86
93
95
100
100
100
98
96
94
96
94
99
97
84
85

Low Clouds (% Sky Obscured)

48
44
39
40
42
44
50
57
63
66
68
70
68
65
62
71
80
89
87
83
82
75
65
57

Medium Clouds (% Sky Obscured)

90
58
64
55
45
40
34
34
28
44
59
75
70
65
87
97
94
91
93
64
56
53
54
57

High Clouds (% Sky Obscured)

94
86
79
54
29
0
0
0
0
5
0
0
0
0
0
1
3
5
10
16
21
23
23
28

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

22
14
2
1
1
0
1
2
3
21
26
28
25
22
16
40
54
30
40
46
39
32
27
19

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
7
7
8
10
10
11
12
12
12
13
13
14
14
15
16
15
14
13
12
11
10
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
6
6
5
4
3
3
3
3
2
3
3
3
3
2
2
3
4
4
5
4
4
4

Dew Point (°C)

8
8
7
7
5
5
5
5
4
4
4
4
4
4
4
4
4
5
5
5
3
3
3
3

Relative Humidity (%)

96
96
95
90
84
84
84
84
82
82
82
82
82
82
81
79
77
84
80
78
68
71
75
78

Pressure (mb)

1001
1001
1000
1000
999
999
998
998
998
997
997
997
996
996
997
997
997
997
997
997
997
998
999
999

Ozone (du)

274
277
278
279
281
282
285
286
286
287
289
293
295
296
294
292
295
299
304
309
311
312
312
310

Monday 24

Waxing Crescent 25%

12:48

19:59

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 OK
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

Sun - Rise: 08:16, Set: 16:59, Transit: 12:38. Moon - Rise: 12:48, Set: 19:59. Civil Dark: 17:35 - 07:41. Nautical Dark: 18:15 - 07:01. Astro Dark: 18:53 - 06:23

Total Clouds (% Sky Obscured)

94
92
89
83
77
70
55
38
24
41
62
79
65
77
90
81
73
66
75
83
90
90
89
90

Low Clouds (% Sky Obscured)

63
63
64
55
48
41
31
21
15
33
47
60
52
55
62
67
70
66
72
68
63
68
74
78

Medium Clouds (% Sky Obscured)

53
46
40
26
13
0
0
0
0
6
14
19
31
52
71
49
41
44
56
57
59
66
74
80

High Clouds (% Sky Obscured)

29
37
41
35
31
24
16
8
0
0
0
0
0
0
0
0
0
0
0
0
4
3
2
1

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

19
16
19
14
13
14
17
15
20
15
21
21
22
19
15
33
46
61
64
61
48
49
47
42

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.3
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
7
7
7
7
6
6
6
6
6
5
5
6
5
5
6
6
7
7
7
7
8
7
7

Feels Like (°C)

4
3
3
3
2
2
2
2
1
2
2
2
2
1
1
2
2
3
4
4
3
4
3
4

Dew Point (°C)

4
4
4
4
2
2
2
2
2
3
3
3
3
2
2
2
3
4
5
5
5
5
4
4

Relative Humidity (%)

81
79
82
81
71
74
75
78
79
80
82
85
83
80
79
78
81
84
87
85
84
82
82
82

Pressure (mb)

1000
1001
1001
1002
1002
1003
1003
1003
1004
1004
1004
1005
1005
1004
1005
1005
1006
1006
1006
1006
1007
1007
1008
1008

Ozone (du)

309
311
312
314
315
319
320
321
323
323
326
328
329
325
322
318
315
312
309
310
311
311
313
314

Tuesday 25

Waxing Crescent 34%

13:11

21:11

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 OK
15 OK
16 OK
17 OK
18 Bad

Sun - Rise: 08:18, Set: 16:59, Transit: 12:38. Moon - Rise: 13:11, Set: 21:11. Civil Dark: 17:34 - 07:42. Nautical Dark: 18:14 - 07:02. Astro Dark: 18:52 - 06:24

Total Clouds (% Sky Obscured)

90
91
92
86
79
69
71
73
74
79
83
88
81
75
68
63
59
55
48
44
40
43
47
51

Low Clouds (% Sky Obscured)

77
76
78
74
69
67
70
73
74
79
83
88
81
75
68
63
59
55
48
44
40
43
47
51

Medium Clouds (% Sky Obscured)

74
69
69
43
21
1
1
0
0
0
0
0
0
0
0
0
0
0
1
3
4
4
4
4

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
5
8
10
9
6
2
3
3
3
8
12
18

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 (%)

38
33
19
20
20
14
14
9
2
6
6
2
4
2
1
3
3
0
1
1
0
1
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
10
10
10
10
10
9
10
10
10
9
8
7
6
6
6
7
8
9
8
8
7
6
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
2
2
2
2
2
3
1
1
1
1
1
2
1
2
2
2
3
2
6
6
5
5
5

Dew Point (°C)

4
3
2
1
1
1
1
1
0
-0
0
1
1
1
1
2
1
1
0
1
1
1
1
1

Relative Humidity (%)

84
79
75
72
74
76
78
75
71
68
72
76
82
80
79
78
71
65
60
61
62
63
66
71

Pressure (mb)

1009
1010
1010
1011
1012
1012
1013
1013
1014
1015
1015
1016
1016
1017
1018
1018
1019
1019
1019
1019
1019
1019
1020
1020

Ozone (du)

316
319
321
324
324
324
324
326
328
330
326
322
318
313
308
303
303
302
302
299
296
293
291
290

Wednesday 26

Waxing Crescent 44%

13:29

22:26

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: 08:19, Set: 16:58, Transit: 12:39. Moon - Rise: 13:29, Set: 22:26. Civil Dark: 17:34 - 07:43. Nautical Dark: 18:13 - 07:04. Astro Dark: 18:52 - 06:26

Total Clouds (% Sky Obscured)

54
57
58
57
57
60
72
86
99
92
87
83
84
85
87
85
82
82

Low Clouds (% Sky Obscured)

50
49
50
53
55
58
72
86
99
92
85
78
78
78
79
76
73
70

Medium Clouds (% Sky Obscured)

3
2
2
19
42
60
65
57
48
55
59
63
62
58
54
39
26
15

High Clouds (% Sky Obscured)

36
57
58
57
57
60
48
44
36
48
57
75
75
80
80
77
79
82

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

Precipitation Probability (%)

2
1
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

5
5
4
4
4
3
3
3
3
3
3
3
2
3
3
3
4
5

Feels Like (°C)

5
3
3
3
2
2
2
1
1
1
1
1
1
0
0
0
0
0

Dew Point (°C)

1
1
1
1
1
0
0
0
-1
-1
-1
-1
-1
-1
-0
0
-0
-0

Relative Humidity (%)

76
78
79
80
80
80
82
80
79
79
79
79
80
80
80
82
76
71

Pressure (mb)

1021
1021
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1023
1023
1023
1023

Ozone (du)

288
287
285
283
282
281
280
279
278
277
276
275
274
273
273
272
273
273

Forecast for Butry-sur-Oise, Val d'Oise, France (49.09,2.20)

Generated: 20/11/25 19:11:14. Forecast: 20/11/25 to 26/11/25. Timezone: UTC+1.00