Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 15

Waning Crescent 30%

00:40

17:21

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

Sun - Rise: 07:30, Set: 20:03, Transit: 13:45. Moon - Rise: 00:40, Set: 17:21. Civil Dark: 20:35 - 06:58. Nautical Dark: 21:13 - 06:20. Astro Dark: 21:53 - 05:41

Total Clouds (% Sky Obscured)

80
77
66
0
52
100
100
32
17
24
30
48
56
82
65
76
67
42
84
97
100
100
100
100

Low Clouds (% Sky Obscured)

42
32
27
0
3
0
3
3
17
24
30
42
45
51
64
55
58
42
62
47
49
47
21
54

Medium Clouds (% Sky Obscured)

41
29
8
0
0
0
0
0
0
0
0
0
11
0
0
0
8
35
35
73
67
66
65
70

High Clouds (% Sky Obscured)

0
3
5
0
20
40
45
13
0
1
0
27
4
42
36
60
45
34
70
90
97
100
100
99

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
3
15
8
10
1

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)

18
17
17
16
16
14
13
14
15
14
14
13
12
11
11
11
11
11
11
12
13
13
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

31
32
37
41
46
47
50
54
59
63
66
70
71
67
68
71
75
75
70
68
58
50
49
53

Pressure (mb)

1015
1015
1015
1016
1016
1017
1018
1018
1019
1019
1019
1020
1020
1020
1020
1021
1021
1022
1022
1023
1023
1022
1022
1022

Ozone (du)

286
287
288
292
295
299
302
304
305
303
304
303
303
304
300
299
297
296
296
297
296
294
290
287

Tuesday 16

Waning Crescent 20%

01:58

18:03

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 OK
10 OK
11 Bad
12 Bad
13 Bad
14 OK
15 OK

Sun - Rise: 07:31, Set: 20:01, Transit: 13:45. Moon - Rise: 01:58, Set: 18:03. Civil Dark: 20:33 - 06:59. Nautical Dark: 21:11 - 06:22. Astro Dark: 21:50 - 05:42

Total Clouds (% Sky Obscured)

98
99
100
95
100
100
100
81
100
82
89
83
100
97
81
61
51
38
42
51
53
52
37
29

Low Clouds (% Sky Obscured)

88
52
50
60
29
23
0
0
0
5
0
0
17
31
26
23
25
27
36
43
47
52
37
29

Medium Clouds (% Sky Obscured)

56
58
42
40
43
48
37
35
44
53
56
83
85
88
58
52
51
37
24
30
35
2
3
0

High Clouds (% Sky Obscured)

74
95
100
79
100
100
100
55
100
21
68
18
92
71
41
16
5
3
27
4
2
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 (%)

1
0
2
3
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)

12
10
9
8
8
7
5
4
4
4
4
4
4
4
4
4
3
3
4
6
6
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

51
51
50
48
50
53
57
62
66
67
65
65
65
67
65
65
66
67
66
63
63
63
47
41

Pressure (mb)

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

Ozone (du)

284
281
280
279
277
276
275
274
273
271
269
266
263
262
261
260
258
257
257
257
256
257
258
258

Wednesday 17

Waning Crescent 12%

03:18

18:33

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

Sun - Rise: 07:32, Set: 19:59, Transit: 13:45. Moon - Rise: 03:18, Set: 18:33. Civil Dark: 20:31 - 07:01. Nautical Dark: 21:08 - 06:23. Astro Dark: 21:48 - 05:44

Total Clouds (% Sky Obscured)

28
17
5
14
0
0
0
0
16
23
35
42
50
56
60
67
63
63
59
57
55
50
46
46

Low Clouds (% Sky Obscured)

28
17
5
13
0
0
0
0
15
23
35
42
50
56
60
67
63
63
59
57
55
50
46
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
2
4
1
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
2
3
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
0
0
2
2
2
3
4
4
3
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
7
7
7
7
6
6
6
6
7
6
7
7
7
7
7
7
7
7
6
6
5
3
1

Relative Humidity (%)

38
37
37
40
44
46
48
49
50
52
52
54
55
55
56
57
58
52
46
41
36
31
26
22

Pressure (mb)

1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

259
261
260
260
262
263
262
261
261
260
259
258
258
257
258
259
260
259
260
260
261
261
261
262

Thursday 18

Waning Crescent 6%

04:36

18:54

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

Sun - Rise: 07:34, Set: 19:57, Transit: 13:44. Moon - Rise: 04:36, Set: 18:54. Civil Dark: 20:28 - 07:02. Nautical Dark: 21:06 - 06:25. Astro Dark: 21:45 - 05:46

Total Clouds (% Sky Obscured)

51
47
42
33
40
45
51
36
23
10
30
46
66
58
50
45
30
17
4
11
25
39
17
10

Low Clouds (% Sky Obscured)

51
47
40
32
29
25
21
18
14
10
7
3
0
18
37
45
30
17
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)

0
1
2
2
10
17
22
15
8
3
16
36
51
40
21
1
2
3
3
11
21
34
17
10

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
1
1
0
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
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

24
24
24
22
21
20
20
19
18
18
18
17
17
17
16
16
15
18
20
22
24
26
28
29

Feels Like (°C)

23
24
23
22
21
21
20
19
19
19
17
18
17
17
16
16
16
18
20
22
24
26
26
29

Dew Point (°C)

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

Relative Humidity (%)

19
19
19
21
24
26
28
30
31
33
34
37
38
40
42
45
46
44
37
32
31
31
30
27

Pressure (mb)

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

Ozone (du)

262
261
261
259
257
256
255
256
256
254
255
256
256
256
255
255
255
255
255
254
254
255
255
255

Friday 19

Waning Crescent 2%

05:51

19:11

16 Good
17 OK
18 Good
19 Good
20 Good
21 Good
22 OK
23 OK
00 OK
01 OK
02 OK
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 OK

Sun - Rise: 07:35, Set: 19:55, Transit: 13:44. Moon - Rise: 05:51, Set: 19:11. Civil Dark: 20:26 - 07:04. Nautical Dark: 21:04 - 06:26. Astro Dark: 21:43 - 05:47

Total Clouds (% Sky Obscured)

4
5
8
9
8
15
21
20
20
21
46
71
94
91
87
85
88
93
97
86
75
64
47
31

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
5
8
12
9
5
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
11
21
30
37
43
36
47
48
44
47
31

High Clouds (% Sky Obscured)

3
4
6
8
8
15
21
20
20
19
44
68
93
84
74
65
76
88
97
67
35
2
4
10

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
3
8

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)

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

Chance of Frost

Temperature (°C)

30
30
30
28
26
25
24
23
23
22
21
21
20
20
20
19
19
21
23
24
26
27
29
29

Feels Like (°C)

30
31
30
28
26
26
26
25
25
25
24
20
20
20
19
19
19
19
20
21
21
22
22
30

Dew Point (°C)

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

Relative Humidity (%)

24
23
23
25
28
29
30
31
32
34
35
40
44
49
50
51
52
51
50
50
45
40
36
37

Pressure (mb)

1020
1019
1019
1019
1018
1018
1018
1019
1018
1018
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1014

Ozone (du)

255
255
256
256
257
258
258
258
258
258
258
258
257
257
256
255
254
253
252
251
250
250
250
251

Saturday 20

Waning Crescent 0%

07:03

19:25

16 OK
17 OK
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

Sun - Rise: 07:37, Set: 19:52, Transit: 13:44. Moon - Rise: 07:03, Set: 19:25. Civil Dark: 20:24 - 07:05. Nautical Dark: 21:01 - 06:28. Astro Dark: 21:40 - 05:49

Total Clouds (% Sky Obscured)

10
32
50
65
77
88
100
100
100
100
94
87
81
87
94
100
100
100
100
99
98
97
98
99

Low Clouds (% Sky Obscured)

1
9
17
24
18
13
8
5
3
0
21
41
62
62
62
62
72
82
93
93
93
94
91
89

Medium Clouds (% Sky Obscured)

10
32
50
65
77
71
59
72
80
87
89
87
81
87
93
99
93
87
81
78
77
75
85
92

High Clouds (% Sky Obscured)

10
32
50
63
68
78
93
95
97
100
81
65
48
67
84
100
100
100
100
95
87
78
83
93

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

14
21
24
16
28
38
46
40
33
21
95
95
95
95
95
95
95
95
95
85
72
66
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0.2
0
0
0
0.7
1.4
1.8
1.9
1.9
2.1
1.5
1
0.7
0.4
0.3
0.3
0.9
2.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

28
28
27
25
24
23
22
20
20
20
20
19
19
19
18
18
18
18
18
19
19
19
20
20

Feels Like (°C)

29
28
28
28
28
22
22
22
21
21
21
20
21
21
21
21
21
18
19
19
20
19
20
21

Dew Point (°C)

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

Relative Humidity (%)

38
40
45
50
56
63
72
80
81
81
82
86
89
92
92
90
90
88
86
85
86
86
88
91

Pressure (mb)

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

Ozone (du)

252
252
253
253
254
255
256
258
258
259
259
260
261
262
262
262
263
263
263
263
264
265
267
266

Sunday 21

New Moon 1%

08:14

19:38

16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad

Sun - Rise: 07:38, Set: 19:50, Transit: 13:43. Moon - Rise: 08:14, Set: 19:38. Civil Dark: 20:22 - 07:07. Nautical Dark: 20:59 - 06:29. Astro Dark: 21:38 - 05:51

Total Clouds (% Sky Obscured)

100
100
100
99
99
100
100
99
98
96

Low Clouds (% Sky Obscured)

87
85
83
81
81
81
80
82
84
86

Medium Clouds (% Sky Obscured)

98
81
62
44
41
41
42
37
34
26

High Clouds (% Sky Obscured)

100
77
54
21
48
72
100
97
95
92

ISS Passover

Visibility (miles)

4
1
4
7
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

95
95
95
95
95
95
89
82
71
39

Precipitation Amount (mm)

3.9
1.8
1.1
0.7
0.7
0.6
0.3
0.3
0.3
0

Wind Speed/Direction (mph)

4
4
3
3
4
4
5
5
5
4

Chance of Frost

Temperature (°C)

19
19
20
19
19
19
18
18
17
16

Feels Like (°C)

21
21
21
20
20
20
19
19
19
19

Dew Point (°C)

18
19
19
18
18
18
16
16
15
15

Relative Humidity (%)

92
95
95
93
93
93
90
90
89
89

Pressure (mb)

1014
1014
1014
1014
1013
1014
1014
1014
1014
1015

Ozone (du)

266
266
267
268
269
270
270
270
270
270

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

Generated: 15/09/25 16:27:35. Forecast: 15/09/25 to 21/09/25. Timezone: UTC+2.00