Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 16

Waning Crescent 30%

01:01

17:25

08 Bad
09 OK
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
06 Bad
07 Bad

Sun - Rise: 06:42, Set: 19:14, Transit: 12:57. Moon - Rise: 01:01, Set: 17:25. Civil Dark: 19:47 - 06:09. Nautical Dark: 20:26 - 05:30. Astro Dark: 21:07 - 04:49

Total Clouds (% Sky Obscured)

45
38
68
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
98
98
100

Low Clouds (% Sky Obscured)

45
38
67
51
59
47
55
53
50
49
27
22
57
27
14
49
57
71
70
79
83
96
85
82

Medium Clouds (% Sky Obscured)

0
19
15
21
16
64
64
47
38
50
93
79
94
52
93
100
98
93
98
100
100
80
95
100

High Clouds (% Sky Obscured)

45
38
35
100
100
100
100
100
100
97
100
65
100
99
88
93
100
100
79
45
15
1
0
2

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
14
2
0
1
3
13
19
5
11
26
18
30
59
68
57
48
76
71
62
72
45

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.2
0
0.6
0.4
0.3
0.5
0.2

Wind Speed/Direction (mph)

11
13
15
17
16
17
16
15
13
12
9
8
6
6
6
5
6
7
7
7
11
12
15
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
74
66
61
56
51
51
55
59
61
64
69
79
83
84
83
79
82
86
86
86
87
90
93

Pressure (mb)

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

Ozone (du)

299
298
295
292
289
285
280
277
275
273
272
268
266
265
262
261
259
258
254
252
251
252
251
252

Wednesday 17

Waning Crescent 20%

02:23

17:53

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
06 Bad
07 Bad

Sun - Rise: 06:44, Set: 19:11, Transit: 12:57. Moon - Rise: 02:23, Set: 17:53. Civil Dark: 19:44 - 06:11. Nautical Dark: 20:24 - 05:32. Astro Dark: 21:05 - 04:51

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
100
100
100
98
89
89
83
87
93
78
81
82
68
84
85

Low Clouds (% Sky Obscured)

81
82
100
100
100
100
99
100
99
100
93
100
98
87
86
83
81
89
78
81
82
65
80
85

Medium Clouds (% Sky Obscured)

100
85
66
95
81
83
66
70
59
62
67
53
54
38
27
0
5
4
0
0
0
3
3
0

High Clouds (% Sky Obscured)

1
2
1
0
0
0
2
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 (%)

28
26
19
13
9
7
11
3
18
6
4
2
2
3
0
0
0
0
0
0
1
0
2
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
19
18
19
18
18
18
17
16
16
15
15
14
14
14
14
14
14
14
14
14
14
14
15

Chance of Frost

Temperature (°C)

16
16
17
17
17
17
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
17
17

Feels Like (°C)

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

Dew Point (°C)

15
14
14
15
15
16
16
17
17
17
17
17
17
17
17
17
17
17
17
17
17
16
16
16

Relative Humidity (%)

89
85
85
87
89
90
92
93
93
95
95
95
93
93
95
96
96
95
93
95
95
92
92
90

Pressure (mb)

1016
1016
1016
1016
1016
1017
1017
1016
1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

253
253
256
257
256
259
262
261
260
260
260
260
260
260
260
259
259
259
259
259
257
257
258
257

Thursday 18

Waning Crescent 12%

03:44

18:12

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 OK
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 OK

Sun - Rise: 06:45, Set: 19:09, Transit: 12:56. Moon - Rise: 03:44, Set: 18:12. Civil Dark: 19:42 - 06:13. Nautical Dark: 20:21 - 05:34. Astro Dark: 21:02 - 04:53

Total Clouds (% Sky Obscured)

65
70
52
58
61
66
55
73
53
43
38
61
85
85
79
81
90
80
66
61
56
45
47
40

Low Clouds (% Sky Obscured)

65
70
52
58
59
64
51
73
53
43
38
41
46
44
42
46
56
48
39
30
32
31
30
26

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
0
0
1
1
1
0
0
1
2
32
70
81
76
73
70
57
47
40
28
17
10
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 (%)

3
2
16
1
5
0
4
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)

13
14
16
16
17
17
18
18
17
16
13
10
8
6
5
4
4
4
3
3
3
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
95
86
84
82
81
77
73
73
74
80
89
93
95
95
93
95
93
93
93
95
95
95
96

Pressure (mb)

1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020
1019
1019
1018
1018
1017
1017
1017

Ozone (du)

256
255
255
254
254
254
255
255
256
256
256
255
255
254
254
254
254
256
257
259
259
261
261
263

Friday 19

Waning Crescent 6%

05:01

18:27

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

Sun - Rise: 06:47, Set: 19:07, Transit: 12:56. Moon - Rise: 05:01, Set: 18:27. Civil Dark: 19:40 - 06:14. Nautical Dark: 20:19 - 05:35. Astro Dark: 21:00 - 04:55

Total Clouds (% Sky Obscured)

44
44
39
58
53
72
80
82
80
78
28
19
12
11
44
34
48
56
77
86
99
99
100
100

Low Clouds (% Sky Obscured)

24
18
24
26
24
29
32
33
33
28
28
19
10
0
7
14
21
29
36
43
56
78
96
81

Medium Clouds (% Sky Obscured)

0
3
7
16
1
2
2
7
65
53
2
2
1
2
0
0
2
2
3
5
14
22
30
65

High Clouds (% Sky Obscured)

5
0
0
5
3
5
5
10
15
10
1
1
2
3
29
34
48
56
77
85
97
98
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
1
0
2
5
7
43

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
80
62
50
45
42
42
46
49
55
62
73
77
82
87
90
93
93
93
95
95
96
95
86

Pressure (mb)

1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1016
1016
1016
1015
1015
1014
1014
1014
1013
1013
1013
1013

Ozone (du)

264
264
264
264
263
263
263
262
262
263
263
262
262
262
261
262
261
262
263
264
265
266
267
267

Saturday 20

Waning Crescent 2%

06:15

18:39

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

Sun - Rise: 06:48, Set: 19:05, Transit: 12:56. Moon - Rise: 06:15, Set: 18:39. Civil Dark: 19:37 - 06:16. Nautical Dark: 20:16 - 05:37. Astro Dark: 20:57 - 04:56

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
99
81
62
40
82
65
42
64
81
95
95
91
86
96
90
91
94

Low Clouds (% Sky Obscured)

67
53
36
19
2
8
13
19
19
20
20
55
43
30
29
30
30
26
20
18
26
37
47
48

Medium Clouds (% Sky Obscured)

79
83
59
67
45
55
55
55
45
40
27
58
37
13
15
16
25
35
40
45
56
61
67
59

High Clouds (% Sky Obscured)

100
100
100
100
100
99
98
98
68
29
13
66
36
5
34
59
86
83
84
85
85
80
70
70

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

65
77
76
55
12
20
14
27
33
5
1
4
4
1
9
13
15
38
47
44
49
58
64
64

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

10
10
10
10
9
11
13
13
12
12
11
12
8
7
4
4
3
3
2
2
2
2
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

15
15
16
15
16
15
14
14
14
13
13
11
12
11
11
11
11
11
11
11
12
11
12
12

Dew Point (°C)

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

Relative Humidity (%)

89
86
81
71
70
52
58
60
64
71
72
75
76
79
82
84
86
89
90
90
92
92
91
95

Pressure (mb)

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

Ozone (du)

268
268
268
268
269
269
270
271
273
274
277
284
287
290
293
295
297
298
301
304
307
308
310
312

Sunday 21

New Moon 0%

07:27

18:50

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 OK
03 OK
04 OK
05 OK
06 Good
07 OK

Sun - Rise: 06:50, Set: 19:02, Transit: 12:55. Moon - Rise: 07:27, Set: 18:50. Civil Dark: 19:35 - 06:17. Nautical Dark: 20:14 - 05:39. Astro Dark: 20:54 - 04:58

Total Clouds (% Sky Obscured)

97
99
93
86
78
74
69
65
47
30
14
14
13
14
16
17
23
21
17
15
13
12
10
14

Low Clouds (% Sky Obscured)

49
46
54
64
74
67
60
56
39
27
14
11
7
2
11
17
23
21
17
15
13
10
8
10

Medium Clouds (% Sky Obscured)

54
56
38
20
2
4
7
11
7
5
0
2
5
10
9
8
6
4
2
1
0
0
0
0

High Clouds (% Sky Obscured)

75
90
60
32
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

55
37
27
21
21
24
28
33
37
43
49
48
49
44
44
42
34
30
25
9
14
15
8
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

10
10
11
12
12
12
12
11
11
11
11
12
9
10
11
11
11
11
9
7
6
6
6
6

Dew Point (°C)

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

Relative Humidity (%)

83
75
67
66
64
61
59
56
54
61
69
77
80
81
84
88
91
95
93
91
88
85
84
80

Pressure (mb)

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

Ozone (du)

313
314
315
316
317
318
319
321
322
324
326
328
329
329
329
329
329
329
329
329
330
330
329
329

Monday 22

Waxing Crescent 1%

No Rise

19:00

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

Sun - Rise: 06:52, Set: 19:00, Transit: 12:55. Moon - Rise: No Rise, Set: 19:00. Civil Dark: 19:33 - 06:19. Nautical Dark: 20:12 - 05:40. Astro Dark: 20:52 - 05:00

Total Clouds (% Sky Obscured)

17
22
29
35
40
57
74
90
90
92
95
90
85
80
66
50
35

Low Clouds (% Sky Obscured)

12
14
24
35
40
57
69
76
74
72
68
68
70
72
59
45
31

Medium Clouds (% Sky Obscured)

0
0
0
0
0
4
7
11
8
6
6
7
8
14
24
34
35

High Clouds (% Sky Obscured)

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

Fog (%)

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

Precipitation Probability (%)

16
7
11
10
2
16
18
14
26
35
31
30
24
10
13
11
3

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
6
7
6
7
7
11
11
11
11
11
11
7
8
8
8
8

Dew Point (°C)

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

Relative Humidity (%)

77
73
70
63
58
53
53
52
52
54
56
59
60
61
61
65
68

Pressure (mb)

1017
1018
1018
1018
1018
1018
1018
1018
1018
1019
1019
1019
1019
1020
1020
1020
1020

Ozone (du)

329
328
328
330
332
334
333
331
330
329
327
326
326
326
326
326
326

Forecast for Chichester, West Sussex, United Kingdom (50.84,-0.77)

Generated: 16/09/25 08:35:29. Forecast: 16/09/25 to 22/09/25. Timezone: UTC+1.00