Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

04:54

19:07

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

Sun - Rise: 07:48, Set: 20:11, Transit: 13:59. Moon - Rise: 04:54, Set: 19:07. Civil Dark: 20:42 - 07:16. Nautical Dark: 21:19 - 06:40. Astro Dark: 21:58 - 06:01

Total Clouds (% Sky Obscured)

90
87
80
65
35
45
39
61
37
64
49
41
42
11
0
0
0
11
59
11
12
78
100
100

Low Clouds (% Sky Obscured)

67
62
45
42
35
45
39
61
37
37
39
37
27
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)

0
0
0
0
0
0
0
2
2
39
20
11
40
11
0
0
0
11
59
11
12
76
97
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
98
98
95
85
76
68
58
49
43
39
36
35
39
50
58
66
72
78
79
80
80
80
79

Pressure (mb)

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

Ozone (du)

267
267
268
268
269
269
269
270
270
268
268
268
268
266
265
263
262
260
259
259
259
260
259
259

Friday 19

Waning Crescent 6%

No Rise

19:24

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

Sun - Rise: 07:49, Set: 20:09, Transit: 13:59. Moon - Rise: No Rise, Set: 19:24. Civil Dark: 20:40 - 07:18. Nautical Dark: 21:17 - 06:41. Astro Dark: 21:55 - 06:03

Total Clouds (% Sky Obscured)

6
22
100
61
4
2
39
46
0
66
48
34
95
93
100
100
43
58
89
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
24
38
32
9
0
0

Medium Clouds (% Sky Obscured)

0
0
3
2
4
2
20
46
0
66
48
34
29
73
32
27
20
36
61
47
46
56
64
78

High Clouds (% Sky Obscured)

6
22
100
61
4
2
33
5
0
2
1
2
67
63
82
81
14
25
76
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
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)

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

Chance of Frost

Temperature (°C)

14
14
14
15
18
21
23
25
26
27
28
28
27
26
24
21
20
19
19
18
18
18
18
18

Feels Like (°C)

12
12
11
12
15
17
19
20
23
23
25
24
24
25
22
21
21
21
18
18
18
18
18
18

Dew Point (°C)

9
7
4
3
3
3
2
1
0
1
2
2
2
4
8
10
13
14
14
14
14
15
14
14

Relative Humidity (%)

74
63
51
44
36
30
25
21
18
17
18
18
19
25
35
47
62
70
75
73
77
78
75
76

Pressure (mb)

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

Ozone (du)

258
259
260
260
260
259
258
258
257
257
258
259
259
260
260
261
261
261
260
260
259
259
260
261

Saturday 20

Waning Crescent 2%

06:08

19:39

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 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:50, Set: 20:07, Transit: 13:59. Moon - Rise: 06:08, Set: 19:39. Civil Dark: 20:38 - 07:19. Nautical Dark: 21:15 - 06:43. Astro Dark: 21:53 - 06:04

Total Clouds (% Sky Obscured)

100
100
99
74
100
84
96
98
100
100
100
73
66
74
82
75
52
25
32
35
38
45
48
55

Low Clouds (% Sky Obscured)

0
0
0
33
45
27
26
62
72
40
39
54
54
65
58
62
49
8
12
15
19
22
22
26

Medium Clouds (% Sky Obscured)

83
78
84
74
75
76
57
26
43
0
62
50
45
45
27
29
3
0
3
10
38
45
48
27

High Clouds (% Sky Obscured)

100
100
96
35
100
37
87
96
96
100
100
50
40
40
60
30
5
25
32
35
35
40
45
32

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

16
12
66
51
67
6
1
1
4
12
10
2
5
22
43
44
31
7
17
19
14
13
10
12

Precipitation Amount (mm)

0
0
0.4
0
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
6
6
6
6
9
10
11
13
14
14
12
13
13
10
7
6
6
6
6
6
5
5
5

Chance of Frost

Temperature (°C)

18
18
18
18
18
19
21
22
24
25
24
24
23
21
19
17
16
15
14
13
12
12
12
11

Feels Like (°C)

17
16
16
18
19
19
20
22
23
23
22
21
19
18
16
16
15
15
13
12
10
11
10
9

Dew Point (°C)

14
14
14
16
17
18
17
16
14
12
11
9
9
10
12
13
14
14
13
12
11
11
11
9

Relative Humidity (%)

79
77
76
90
92
95
79
66
52
46
43
40
40
50
63
78
90
95
93
95
92
92
93
90

Pressure (mb)

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

Ozone (du)

263
262
262
263
263
266
267
265
265
266
268
270
272
271
270
270
271
271
271
273
274
275
276
277

Sunday 21

New Moon 0%

07:19

19:53

06 Bad
07 Bad
08 OK
09 Good
10 OK
11 OK
12 Bad
13 Bad
14 Bad
15 Bad
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

Sun - Rise: 07:52, Set: 20:05, Transit: 13:58. Moon - Rise: 07:19, Set: 19:53. Civil Dark: 20:36 - 07:21. Nautical Dark: 21:13 - 06:44. Astro Dark: 21:51 - 06:06

Total Clouds (% Sky Obscured)

57
63
13
6
16
25
36
34
34
35
48
37
37
36
40
46
50
55
62
64
65
65
65
57

Low Clouds (% Sky Obscured)

20
24
13
6
0
16
32
34
34
35
48
37
37
27
33
41
49
54
59
64
65
65
65
57

Medium Clouds (% Sky Obscured)

11
1
1
0
0
18
13
17
15
14
12
20
27
30
35
35
35
35
40
45
55
55
50
33

High Clouds (% Sky Obscured)

45
45
4
1
11
0
0
0
5
11
15
32
37
36
40
46
50
55
62
64
65
65
65
43

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

Precipitation Probability (%)

5
1
1
2
10
20
20
20
27
34
35
51
59
65
54
45
31
43
62
85
92
95
95
88

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0
0
0
0
0.3
1
0.8
0.8
1.1
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

9
9
9
10
11
10
8
5
4
3
4
5
5
7
8
9
10
11
10
10
10
10
10
10

Relative Humidity (%)

91
93
95
90
82
69
56
42
35
33
34
36
41
48
60
75
84
93
93
93
95
95
95
95

Pressure (mb)

1013
1013
1013
1013
1014
1014
1013
1013
1012
1012
1011
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1011

Ozone (du)

277
278
279
280
282
282
285
286
288
288
289
291
293
295
297
299
298
300
303
308
303
300
300
301

Monday 22

Waxing Crescent 1%

08:29

20:06

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:53, Set: 20:03, Transit: 13:58. Moon - Rise: 08:29, Set: 20:06. Civil Dark: 20:34 - 07:22. Nautical Dark: 21:11 - 06:46. Astro Dark: 21:48 - 06:08

Total Clouds (% Sky Obscured)

49
88
81
68
59
71
86
100
100
98
99
70
50
38
96
91
86
82
77
73
79
85
90
87

Low Clouds (% Sky Obscured)

49
75
66
57
48
50
53
52
53
53
53
42
30
19
44
47
51
50
48
46
47
48
50
51

Medium Clouds (% Sky Obscured)

17
47
50
50
49
26
28
24
22
30
34
22
13
16
71
59
62
59
56
52
58
66
76
64

High Clouds (% Sky Obscured)

22
0
0
0
1
46
72
100
100
94
90
64
38
15
87
77
66
59
50
42
26
22
20
12

ISS Passover

Visibility (miles)

9
9
9
9
9
8
9
8
9
6
3
4
3
4
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

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

Precipitation Probability (%)

69
55
62
51
26
51
54
39
48
62
61
74
79
70
41
36
28
25
19
4
7
7
3
13

Precipitation Amount (mm)

0.2
0
0
0
0
0
0
0
0
0.2
0.2
0.4
0.4
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
10
10
12
14
15
16
16
17
18
18
17
16
15
13
13
12
12
11
11
11
10
10
10

Feels Like (°C)

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

Dew Point (°C)

10
10
10
10
10
10
9
9
9
9
9
11
10
11
10
10
10
10
10
10
10
9
9
9

Relative Humidity (%)

95
96
96
90
80
70
62
63
57
54
57
65
67
74
80
83
86
87
90
90
93
93
95
95

Pressure (mb)

1011
1012
1012
1013
1013
1013
1013
1013
1013
1013
1013
1012
1013
1013
1013
1016
1016
1016
1016
1016
1016
1016
1015
1015

Ozone (du)

304
307
308
310
313
315
313
314
315
314
314
315
313
313
314
314
315
315
315
315
316
316
317
318

Tuesday 23

Waxing Crescent 3%

09:38

20:20

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
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:55, Set: 20:01, Transit: 13:58. Moon - Rise: 09:38, Set: 20:20. Civil Dark: 20:32 - 07:24. Nautical Dark: 21:08 - 06:47. Astro Dark: 21:46 - 06:09

Total Clouds (% Sky Obscured)

83
78
80
82
82
69
56
48
57
72
78
81
83
84
76
71
72
72
73
67
69
68
63
42

Low Clouds (% Sky Obscured)

54
55
55
50
48
50
50
48
51
59
68
65
62
59
61
64
72
72
71
67
69
68
63
42

Medium Clouds (% Sky Obscured)

52
38
35
36
32
29
26
26
22
17
13
18
19
22
21
11
3
2
1
0
0
0
0
0

High Clouds (% Sky Obscured)

16
15
12
5
1
1
0
0
0
0
0
1
2
6
4
2
1
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

15
11
14
11
5
40
52
56
55
58
63
57
49
41
32
21
1
3
3
1
5
7
4
7

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
7
8
8
9
9
9
9
8
8
8
8
8
8
8
8
8
7
7
6
6
6
6

Chance of Frost

Temperature (°C)

10
10
9
11
12
13
15
16
17
17
17
17
16
15
13
12
12
11
10
10
9
9
9
9

Feels Like (°C)

9
8
9
8
9
9
9
9
10
18
17
17
16
17
16
11
11
11
10
10
11
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

95
95
95
90
84
80
73
65
59
61
63
66
70
75
80
83
86
88
90
90
93
93
91
91

Pressure (mb)

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

Ozone (du)

318
317
317
317
317
317
317
316
316
316
315
314
314
315
315
315
315
316
315
315
315
315
316
316

Wednesday 24

Waxing Crescent 7%

10:47

20:36

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

Sun - Rise: 07:56, Set: 19:59, Transit: 13:57. Moon - Rise: 10:47, Set: 20:36. Civil Dark: 20:30 - 07:25. Nautical Dark: 21:06 - 06:48. Astro Dark: 21:44 - 06:11

Total Clouds (% Sky Obscured)

34
29
28
27
28
29
26
28
30
32
30
34
34
38
33
32
36
36
35
35

Low Clouds (% Sky Obscured)

34
29
28
19
6
12
18
24
23
22
21
29
34
38
33
32
36
36
35
35

Medium Clouds (% Sky Obscured)

0
0
10
22
26
19
11
4
11
18
20
20
25
25
33
32
36
36
35
35

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
2
2
3
8
15
30
33
32
36
36
35
35

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

10
4
5
5
3
3
2
1
1
4
5
26
36
43
73
92
95
95
95
85

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.8
0.8
0.7
0.7

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

8
8
8
10
12
14
15
16
18
18
18
18
17
15
13
12
11
9
9
9

Feels Like (°C)

9
8
8
7
8
9
9
10
11
17
17
16
16
17
17
10
10
10
10
9

Dew Point (°C)

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

Relative Humidity (%)

90
87
85
76
68
61
52
45
39
36
34
33
38
44
51
61
71
84
82
82

Pressure (mb)

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

Ozone (du)

315
314
314
313
311
310
309
309
308
307
306
305
304
304
303
303
302
301
300
300

Forecast for Ercé-près-Liffré, Ille-et-Vilaine, France (48.26,-1.51)

Generated: 18/09/25 06:38:02. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00