Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 20%

00:58

17:30

12 Bad
13 Bad
14 Bad
15 OK
16 Bad
17 Bad
18 OK
19 Good
20 Good
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

Sun - Rise: 06:43, Set: 19:15, Transit: 12:58. Moon - Rise: 00:58, Set: 17:30. Civil Dark: 19:48 - 06:09. Nautical Dark: 20:28 - 05:30. Astro Dark: 21:10 - 04:48

Total Clouds (% Sky Obscured)

82
66
50
42
62
100
29
0
8
58
96
100
100
91
100
100
100
100
100
100
100
100
97
91

Low Clouds (% Sky Obscured)

44
31
49
24
8
0
0
0
0
0
0
27
0
22
35
69
94
96
100
95
84
70
71
88

Medium Clouds (% Sky Obscured)

11
1
27
24
10
46
79
66
61
67
41
98
100
99
93
100
100
100
100
63
53
19
22
36

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
70
96
94
100
95
100
100
100
100
49
5
0
0
0
0
0

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
3
9
9
9
9

Fog (%)

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
100
100
100
100
100
0
0
0
1
4
2

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

18
17
17
16
13
16
14
12
9
8
7
6
7
7
8
8
9
8
10
10
12
13
15
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
55
50
48
50
54
58
65
72
75
80
81
80
84
86
89
89
93
93
93
90
89
90
90

Pressure (mb)

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

Ozone (du)

292
288
285
282
280
276
272
268
264
263
261
260
258
256
257
256
254
255
256
254
255
257
258
259

Thursday 18

Waning Crescent 12%

02:21

17:56

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:44, Set: 19:12, Transit: 12:58. Moon - Rise: 02:21, Set: 17:56. Civil Dark: 19:46 - 06:11. Nautical Dark: 20:26 - 05:31. Astro Dark: 21:08 - 04:50

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
89
90
86
87
76
89
89
92
88
93
89
88
86
86
56

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
80
82
77
87
76
81
78
85
74
84
81
79
76
86
56

Medium Clouds (% Sky Obscured)

50
40
44
48
47
54
39
38
28
10
15
10
53
16
46
18
22
20
20
16
14
8
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
3
0
0
0
0
0
0
1
0
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 (%)

2
2
1
4
4
14
29
3
0
1
1
2
2
9
5
1
0
2
2
16
1
3
1
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)

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

Chance of Frost

Temperature (°C)

18
18
18
18
18
18
18
18
18
17
17
17
17
17
17
17
17
17
17
17
17
18
19
20

Feels Like (°C)

15
15
15
15
15
15
15
15
15
15
15
15
16
16
16
16
15
15
15
15
15
15
16
17

Dew Point (°C)

17
16
16
16
16
16
16
16
17
16
17
16
16
16
16
17
16
16
16
16
16
16
16
15

Relative Humidity (%)

89
89
89
89
89
88
89
92
93
93
95
92
92
93
95
96
93
95
92
90
89
86
84
74

Pressure (mb)

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

Ozone (du)

261
261
264
264
263
264
263
263
263
263
261
260
260
261
261
261
260
260
260
259
258
257
257
256

Friday 19

Waning Crescent 6%

03:43

18:15

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
08 Bad
09 OK
10 OK
11 Good

Sun - Rise: 06:46, Set: 19:10, Transit: 12:57. Moon - Rise: 03:43, Set: 18:15. Civil Dark: 19:43 - 06:13. Nautical Dark: 20:23 - 05:33. Astro Dark: 21:05 - 04:52

Total Clouds (% Sky Obscured)

56
54
59
87
61
44
50
45
83
100
99
87
88
100
100
100
100
64
71
65
56
28
26
5

Low Clouds (% Sky Obscured)

56
54
50
58
40
43
46
43
45
48
50
57
55
54
57
51
50
62
70
65
56
28
22
0

Medium Clouds (% Sky Obscured)

3
2
3
18
3
0
5
3
3
3
3
59
41
26
3
3
35
25
4
3
7
4
5
4

High Clouds (% Sky Obscured)

0
37
50
66
47
37
50
45
79
100
99
61
60
100
100
100
100
28
44
45
45
28
26
5

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)

17
17
17
17
16
14
13
11
10
9
8
8
8
7
5
5
5
5
5
5
5
7
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

66
61
58
60
64
68
75
82
88
92
95
95
95
96
96
96
95
96
95
95
92
81
73
66

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1021
1021
1021
1020
1020
1020
1019
1019
1019
1019
1018
1019
1018
1018

Ozone (du)

255
254
254
255
256
257
257
257
257
256
257
257
256
256
257
257
258
259
259
259
259
259
258
258

Saturday 20

Waning Crescent 2%

05:01

18:29

12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 Good
18 OK
19 Bad
20 Bad
21 Bad
22 OK
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

Sun - Rise: 06:48, Set: 19:08, Transit: 12:57. Moon - Rise: 05:01, Set: 18:29. Civil Dark: 19:41 - 06:14. Nautical Dark: 20:21 - 05:35. Astro Dark: 21:02 - 04:54

Total Clouds (% Sky Obscured)

31
100
80
76
69
15
29
72
74
86
34
47
82
82
80
76
80
71
72
83
84
95
95
84

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
20
28
35
41
44
55
70
79
83
80
74
65

Medium Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
1
13
14
25
21
22
46
71
22
7
13
24
36
37
38

High Clouds (% Sky Obscured)

31
100
76
74
67
13
29
52
56
76
2
4
7
10
10
10
10
1
1
5
2
5
29
50

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
1
2
0
0
0
0
2
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
10
11
11
11
10
9
7
6
5
5
4
4
4
4
4
4
4
5
4
5
7
9
11

Chance of Frost

Temperature (°C)

23
24
25
25
25
24
22
19
18
17
16
15
15
15
14
14
14
14
13
13
14
16
18
19

Feels Like (°C)

21
22
21
22
22
22
21
19
17
16
16
15
15
14
13
12
12
12
12
14
14
15
16
16

Dew Point (°C)

14
12
10
10
10
10
11
11
11
10
9
9
9
9
8
9
9
9
10
11
12
13
12
12

Relative Humidity (%)

56
45
40
38
39
43
51
59
63
63
63
64
66
67
67
69
70
73
82
90
89
79
71
62

Pressure (mb)

1017
1017
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1013
1013
1013
1013
1012
1012
1012
1011
1011
1011

Ozone (du)

257
256
257
256
256
256
256
258
259
259
259
259
260
262
262
261
261
261
262
263
265
264
264
264

Sunday 21

New Moon 2%

06:16

18:40

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

Sun - Rise: 06:49, Set: 19:06, Transit: 12:57. Moon - Rise: 06:16, Set: 18:40. Civil Dark: 19:39 - 06:16. Nautical Dark: 20:18 - 05:37. Astro Dark: 21:00 - 04:56

Total Clouds (% Sky Obscured)

83
97
99
100
100
100
100
75
54
21
20
29
41
39
28
25
16
8
0
12
22
32
39
47

Low Clouds (% Sky Obscured)

53
58
64
66
56
62
49
32
35
19
20
28
29
28
26
23
14
7
0
11
21
32
39
47

Medium Clouds (% Sky Obscured)

36
40
69
94
86
75
65
45
54
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

72
86
93
100
100
100
100
75
53
21
20
25
25
15
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
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
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
5
13
20
42
52
34
38
34
16
16
2
0
0
0
0
1
1
2
5
5
16
28
36

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)

11
13
14
13
12
11
9
11
11
11
10
11
10
10
9
9
8
7
6
4
4
7
7
6

Chance of Frost

Temperature (°C)

20
21
21
20
20
18
17
16
15
14
14
13
12
12
11
11
10
10
10
10
11
13
14
15

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

52
46
45
49
54
61
68
73
75
82
84
79
79
80
84
88
91
95
96
95
90
79
68
62

Pressure (mb)

1010
1010
1009
1009
1008
1008
1008
1008
1008
1009
1009
1009
1010
1010
1011
1011
1011
1011
1011
1012
1012
1013
1013
1013

Ozone (du)

263
262
263
263
263
263
264
263
266
269
271
272
275
276
278
279
280
282
283
284
286
287
289
291

Monday 22

Waxing Crescent 0%

07:29

18:51

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
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:51, Set: 19:03, Transit: 12:56. Moon - Rise: 07:29, Set: 18:51. Civil Dark: 19:36 - 06:18. Nautical Dark: 20:16 - 05:38. Astro Dark: 20:57 - 04:57

Total Clouds (% Sky Obscured)

52
59
63
66
69
73
77
94
92
89
88
85
83
86
90
94
94
94
93
92
89
87
68
49

Low Clouds (% Sky Obscured)

51
48
43
34
41
48
56
77
78
78
71
65
58
56
55
58
58
55
55
68
78
87
68
49

Medium Clouds (% Sky Obscured)

1
10
21
36
39
57
44
52
29
18
25
35
49
45
44
44
44
45
45
30
16
6
4
3

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)

7
7
7
4
6
4
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
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
43
49
55
79
91
95
27
23
13
20
21
18
20
15
4
4
4
3
4
2
0
3
2

Precipitation Amount (mm)

0
0
0
0
0.5
0.8
0.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
6
6
6
5
6
8
10
11
10
10
10
10
10
10
10
10
10
11
11
12
12
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

14
15
14
14
14
14
11
9
7
7
7
7
7
7
6
6
7
6
6
6
5
5
6
5

Dew Point (°C)

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

Relative Humidity (%)

61
56
57
69
75
74
74
75
76
78
80
81
81
80
81
80
80
78
78
78
76
73
72
64

Pressure (mb)

1013
1013
1013
1014
1014
1015
1015
1016
1017
1018
1019
1019
1020
1020
1020
1021
1021
1021
1022
1022
1023
1023
1024
1024

Ozone (du)

294
298
302
303
303
303
303
304
305
306
308
309
311
313
314
316
317
318
319
320
319
319
318
317

Tuesday 23

Waxing Crescent 1%

08:41

19:00

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

Sun - Rise: 06:52, Set: 19:01, Transit: 12:56. Moon - Rise: 08:41, Set: 19:00. Civil Dark: 19:34 - 06:19. Nautical Dark: 20:13 - 05:40. Astro Dark: 20:54 - 04:59

Total Clouds (% Sky Obscured)

29
41
56
68
58
48
38
37
38
36
38
42
45
58
66
82
77
75
77
84
91
99
99
100

Low Clouds (% Sky Obscured)

29
41
48
53
48
45
38
37
35
35
36
39
41
50
59
68
64
60
55
52
51
43
43
43

Medium Clouds (% Sky Obscured)

1
1
4
20
15
8
0
0
0
0
1
3
4
3
2
1
3
5
6
7
5
9
9
10

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
3
7
10
18
27
31
28
20
11
16
22
40
45
50

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
3
4
2
9
10
9
30
38
44
47
46

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

Chance of Frost

Temperature (°C)

13
14
14
14
14
13
12
12
11
10
9
9
8
8
9
9
9
10
10
10
10
11
11
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
51
51
51
51
53
54
55
58
60
62
65
67
68
70
73
76
76
74
74
78
80
84
85

Pressure (mb)

1024
1024
1024
1024
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1023
1023
1023
1022
1022

Ozone (du)

316
315
314
313
312
310
309
307
307
306
306
306
306
306
306
306
306
306
305
304
304
305
305
305

Forecast for Reading, Reading, United Kingdom (51.45,-0.98)

Generated: 17/09/25 07:43:21. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+1.00