Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

03:43

18:15

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: 06:46, 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)

98
88
90
90
92
100
100
99
100
68
66
95
100
100
100
100
100
91
99
87
69
73
59
62

Low Clouds (% Sky Obscured)

79
88
90
90
92
73
63
66
57
59
51
49
66
75
72
78
82
76
70
68
66
73
58
62

Medium Clouds (% Sky Obscured)

15
0
2
3
2
2
2
0
12
0
17
40
18
0
20
0
4
38
4
3
3
17
53
60

High Clouds (% Sky Obscured)

2
3
12
13
55
52
43
47
43
68
60
94
100
100
100
100
100
90
99
84
69
70
59
55

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
3
10
1
4
2
1
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
12
15
17
16
15
17
17
16
14
13
11
10
9
9
9
9
8
7
7
6
5
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
16
15
15
15
15
15
15
14
15
15
15
15
16
16
16
16
15
15
15
14
14
14

Relative Humidity (%)

92
88
84
74
72
69
64
64
68
66
72
81
86
90
93
96
96
96
95
96
96
96
96
96

Pressure (mb)

1017
1018
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1021
1021
1020
1020
1020
1020
1019
1019
1019

Ozone (du)

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

Friday 19

Waning Crescent 6%

05:01

18:29

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

89
77
37
45
31
16
40
21
12
5
8
34
41
84
80
100
100
75
70
16
36
34
79
86

Low Clouds (% Sky Obscured)

89
77
35
37
31
16
24
21
11
5
8
34
37
66
61
26
9
24
17
15
23
33
35
72

Medium Clouds (% Sky Obscured)

52
3
3
5
3
2
3
3
0
0
0
0
0
14
16
14
29
6
0
2
9
32
49
86

High Clouds (% Sky Obscured)

26
20
37
45
31
16
40
21
12
4
5
5
38
35
20
84
76
55
64
16
22
31
40
45

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
9
100
99
100
100
99
100

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
5
3
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
8
9
9
10
11
11
12
12
10
9
7
6
5
4
4
3
2
2
2
1
2
1
1

Chance of Frost

Temperature (°C)

15
17
19
20
22
23
24
24
24
23
21
19
17
16
15
15
14
14
14
14
14
14
14
14

Feels Like (°C)

15
16
19
19
21
21
21
21
21
21
21
19
17
16
14
15
16
15
14
13
14
13
13
13

Dew Point (°C)

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

Relative Humidity (%)

92
83
73
67
61
52
44
42
42
45
51
61
67
73
75
76
76
75
75
73
74
71
69
69

Pressure (mb)

1019
1019
1019
1018
1018
1017
1016
1016
1016
1015
1015
1015
1016
1016
1016
1016
1015
1015
1014
1013
1013
1012
1012
1012

Ozone (du)

262
261
260
259
259
258
258
260
262
262
262
262
261
262
262
261
262
262
263
263
263
263
264
264

Saturday 20

Waning Crescent 2%

06:16

18:40

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: 06:49, 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)

93
97
97
100
96
94
100
100
72
73
48
63
48
15
47
55
51
50
55
54
60
59
49
67

Low Clouds (% Sky Obscured)

82
78
63
56
51
87
93
54
65
55
23
42
32
5
41
52
38
50
52
54
54
41
49
55

Medium Clouds (% Sky Obscured)

35
92
92
91
91
64
67
10
6
73
48
21
38
15
40
55
51
50
55
54
60
36
0
38

High Clouds (% Sky Obscured)

45
64
84
100
82
32
100
100
22
35
45
50
45
15
0
0
3
10
10
6
10
1
0
4

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
8
9
4
7
9
9
9
9
9
9
9
9

Fog (%)

20
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
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
16
22
21
11
5
2
5
1
1
1
0
29
59
55
31
42
46
10
2
1
0
0
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

2
3
6
8
8
8
9
11
12
12
10
8
7
7
7
8
8
9
8
7
8
6
5
4

Chance of Frost

Temperature (°C)

14
16
18
19
19
19
20
20
20
20
18
16
15
14
14
13
13
13
13
12
12
12
11
10

Feels Like (°C)

14
16
17
18
18
18
19
18
17
18
17
15
14
14
14
13
13
12
11
11
10
10
10
11

Dew Point (°C)

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

Relative Humidity (%)

67
62
58
58
56
59
56
49
47
48
57
65
74
80
89
93
95
89
84
86
87
88
93
95

Pressure (mb)

1011
1011
1011
1011
1011
1010
1009
1009
1009
1009
1009
1010
1010
1011
1011
1010
1010
1010
1010
1010
1010
1010
1011
1011

Ozone (du)

263
261
261
261
261
263
262
261
262
263
264
263
265
266
267
270
269
269
270
271
273
274
276
276

Sunday 21

New Moon 0%

07:29

18:51

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: 06:51, 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)

49
49
52
51
57
72
84
81
76
64
76
80
73
85
84
73
68
69
68
62
57
66
61
69

Low Clouds (% Sky Obscured)

49
48
49
47
45
63
80
81
76
60
53
45
38
38
41
31
39
45
36
37
42
55
61
66

Medium Clouds (% Sky Obscured)

7
11
14
18
18
21
22
21
25
29
34
50
41
37
39
48
68
68
65
38
21
55
44
46

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
10
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
8
7
9
9
9
9
7
9
9
9
9
3
9
3
3
7
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
Very Light Rain
None
Very Light Rain
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
1
3
12
24
28
22
5
6
15
18
22
17
16
33
56
49
51
53
39
26
18
23
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
13
14
14
15
14
13
13
14
14
14
14
13
13
12
11
12
9
9
9
9
8
6
6

Dew Point (°C)

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

Relative Humidity (%)

88
80
73
62
53
51
52
52
48
51
60
75
83
84
83
80
88
90
90
95
96
96
91
88

Pressure (mb)

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

Ozone (du)

277
278
278
278
279
280
282
283
284
287
291
295
296
295
295
294
293
294
299
304
305
305
304
304

Monday 22

Waxing Crescent 1%

No Rise

19:00

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 OK
23 OK
00 OK
01 OK
02 OK
03 OK
04 Bad
05 Bad
06 Bad
07 Bad

Sun - Rise: 06:52, Set: 19:01, Transit: 12:56. Moon - Rise: No Rise, 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)

79
87
84
80
76
79
83
85
76
67
58
73
65
50
44
36
30
32
35
39
59
80
100
97

Low Clouds (% Sky Obscured)

66
67
64
61
56
53
51
45
42
39
37
9
18
27
28
28
28
21
13
7
21
35
48
47

Medium Clouds (% Sky Obscured)

55
59
58
53
38
36
66
76
61
43
33
26
9
1
1
0
0
2
4
8
14
19
25
19

High Clouds (% Sky Obscured)

0
0
0
0
1
1
1
0
2
1
9
42
40
28
13
6
1
1
1
0
30
57
80
63

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 (%)

5
3
4
4
8
9
9
7
3
1
0
1
0
0
0
0
0
0
0
0
8
7
5
21

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
12
13
13
13
13
13
12
13
12
11
11
10
8
8
7
7
6
6
7
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
8
8
9
11
11
11
11
11
10
10
9
8
7
7
7
7
7
5
5
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

88
86
79
71
64
57
55
61
70
69
66
66
67
67
68
73
77
81
81
81
81
84
87
88

Pressure (mb)

1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1019
1021
1021
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020

Ozone (du)

304
303
302
303
304
305
306
306
306
307
308
309
309
310
310
310
310
311
312
314
315
313
312
310

Tuesday 23

Waxing Crescent 3%

08:41

19:11

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: 06:54, Set: 18:59, Transit: 12:56. Moon - Rise: 08:41, Set: 19:11. Civil Dark: 19:32 - 06:21. Nautical Dark: 20:11 - 05:42. Astro Dark: 20:52 - 05:01

Total Clouds (% Sky Obscured)

98
97
97
98
100
99
96
94
93
92
91
94
94
98
98
99
98
97
89
95
87
73
76
72

Low Clouds (% Sky Obscured)

46
46
47
48
49
50
54
55
51
44
36
54
72
89
83
78
73
68
63
58
66
73
76
72

Medium Clouds (% Sky Obscured)

9
5
15
26
37
37
40
60
57
51
25
15
5
5
10
5
10
15
20
20
14
9
9
9

High Clouds (% Sky Obscured)

53
40
59
79
100
99
96
94
93
90
85
60
60
50
37
21
1
21
42
52
46
31
18
16

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

Precipitation Probability (%)

27
31
32
34
35
37
37
37
34
30
24
30
35
39
49
63
73
61
55
55
47
44
49
54

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

5
5
5
6
6
7
10
11
11
11
11
11
9
10
10
10
10
11
7
7
7
7
7
7

Dew Point (°C)

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

Relative Humidity (%)

78
68
60
56
52
48
46
45
42
49
54
60
62
64
65
69
74
81
82
84
85
87
90
91

Pressure (mb)

1020
1021
1021
1020
1020
1020
1020
1019
1019
1019
1019
1019
1019
1019
1020
1020
1020
1020
1020
1020
1020
1020
1020
1020

Ozone (du)

309
308
307
308
308
309
310
311
311
311
312
312
311
310
310
310
310
310
309
309
308
307
306
305

Wednesday 24

Waxing Crescent 7%

09:54

19:23

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

Sun - Rise: 06:56, Set: 18:56, Transit: 12:55. Moon - Rise: 09:54, Set: 19:23. Civil Dark: 19:29 - 06:23. Nautical Dark: 20:09 - 05:43. Astro Dark: 20:49 - 05:03

Total Clouds (% Sky Obscured)

68
68
65
66
72
66
52
42
28
16
17
20
24
29
38
42
47

Low Clouds (% Sky Obscured)

65
68
65
66
72
66
52
42
28
16
17
19
10
5
12
22
34

Medium Clouds (% Sky Obscured)

4
8
8
8
12
22
21
21
19
16
17
20
24
29
38
40
40

High Clouds (% Sky Obscured)

12
8
7
5
3
1
0
0
1
2
3
13
22
29
19
8
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

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

Precipitation Probability (%)

44
34
33
25
11
11
9
3
4
3
1
10
19
28
40
52
62

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
6
7
7
8
8
14
14
13
14
14
15
11
10
11
10
10

Dew Point (°C)

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

Relative Humidity (%)

81
73
66
59
51
45
45
42
41
45
50
55
56
58
61
61
63

Pressure (mb)

1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1021
1022
1022
1022
1021

Ozone (du)

303
302
301
300
300
299
299
298
298
298
299
299
299
298
298
298
298

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

Generated: 18/09/25 08:12:54. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00