Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 12%

02:40

18:26

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

Sun - Rise: 06:59, Set: 19:24, Transit: 13:11. Moon - Rise: 02:40, Set: 18:26. Civil Dark: 19:56 - 06:26. Nautical Dark: 20:35 - 05:47. Astro Dark: 21:16 - 05:06

Total Clouds (% Sky Obscured)

93
94
94
94
94
94
94
94
94
94
87
94
94
94
94
94
96
88
98
88
82
93
97
97

Low Clouds (% Sky Obscured)

79
100
100
91
96
93
95
100
97
95
82
86
84
85
78
86
82
83
80
77
82
85
95
92

Medium Clouds (% Sky Obscured)

40
50
51
59
60
47
25
0
2
28
1
2
2
0
0
0
2
52
40
5
6
60
43
18

High Clouds (% Sky Obscured)

0
0
0
0
2
4
4
71
62
28
15
16
25
12
48
77
91
88
83
86
82
93
88
43

ISS Passover

Visibility (miles)

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
9
9
9
9
1
0
6
9

Fog (%)

-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
0
55
54
54
54

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
1
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
16
16
16
16
15
15
15
16
16
16
16
16
16
16
16
15
15
16
15
16
15
15
15

Relative Humidity (%)

96
97
98
97
96
93
92
92
93
93
94
95
89
91
93
95
83
88
92
93
98
96
96
96

Pressure (mb)

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

Ozone (du)

268
267
269
272
272
270
269
268
266
266
264
264
263
262
260
256
255
255
255
256
257
258
259
258

Friday 19

Waning Crescent 6%

04:00

18:41

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

Sun - Rise: 07:00, Set: 19:21, Transit: 13:11. Moon - Rise: 04:00, Set: 18:41. Civil Dark: 19:54 - 06:28. Nautical Dark: 20:33 - 05:49. Astro Dark: 21:13 - 05:08

Total Clouds (% Sky Obscured)

95
100
96
97
91
91
96
93
88
76
83
86
91
95
94
98
97
100
100
99
97
99
99
100

Low Clouds (% Sky Obscured)

90
100
92
94
84
83
79
87
84
76
83
86
84
83
89
69
67
62
75
78
76
90
94
97

Medium Clouds (% Sky Obscured)

19
53
49
20
23
27
35
58
7
16
4
31
36
31
29
21
15
37
32
0
3
0
25
33

High Clouds (% Sky Obscured)

54
31
39
40
46
81
96
90
81
76
70
54
49
52
58
90
87
100
100
96
82
97
76
95

ISS Passover

Visibility (miles)

9
2
0
3
2
1
0
0
0
9
9
9
9
9
9
9
9
9
9
9
9
9
5
4

Fog (%)

54
54
1
0
0
0
1
2
2
5
4
4
2
0
0
0
0
0
0
0
0
0
0
56

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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

15
15
15
14
14
14
14
14
14
14
14
13
13
13
14
14
14
14
14
14
14
13
13
14

Relative Humidity (%)

95
96
100
98
98
98
100
100
98
93
85
78
74
73
74
76
78
82
86
96
98
98
98
100

Pressure (mb)

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

Ozone (du)

258
260
264
265
265
262
262
262
264
266
266
268
270
271
272
271
270
270
271
273
272
272
271
271

Saturday 20

Waning Crescent 2%

05:17

18:53

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

Sun - Rise: 07:02, Set: 19:19, Transit: 13:10. Moon - Rise: 05:17, Set: 18:53. Civil Dark: 19:52 - 06:29. Nautical Dark: 20:30 - 05:50. Astro Dark: 21:11 - 05:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
100
100
100
100
100
100
99
100
80
89
65
45
65
57
65
66
62
75

Low Clouds (% Sky Obscured)

87
89
89
100
100
97
100
100
89
91
91
100
99
100
68
81
65
45
65
57
65
66
62
75

Medium Clouds (% Sky Obscured)

19
55
38
60
63
69
81
63
69
98
97
100
58
47
56
22
0
4
9
2
0
2
0
23

High Clouds (% Sky Obscured)

100
97
100
100
100
62
100
84
100
100
100
5
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

4
4
1
1
0
0
0
0
0
0
2
7
6
3
7
7
5
9
9
9
9
9
9
9

Fog (%)

19
68
66
68
66
59
51
64
66
54
0
0
3
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

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

Precipitation Probability (%)

2
0
2
6
8
18
16
60
87
95
95
95
93
75
46
55
36
11
7
8
11
15
29
18

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.5
0.5
1.1
1.2
0.8
0.7
0.5
0
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
8
8
8
9
9
8
8
9
11
12
15
18
19
16
17
19
16
15
13
11
9
8
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
100
100
98
98
98
100
98
100
98
98
92
93
89
95
92
87
86
83
86
93
95
96
96

Pressure (mb)

1014
1013
1012
1012
1011
1010
1010
1009
1009
1009
1008
1008
1007
1007
1007
1008
1008
1009
1009
1010
1010
1010
1010
1009

Ozone (du)

271
272
271
271
273
274
274
274
276
276
277
277
279
283
289
294
298
300
305
312
314
313
309
309

Sunday 21

New Moon 0%

06:31

19:04

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

Sun - Rise: 07:03, Set: 19:17, Transit: 13:10. Moon - Rise: 06:31, Set: 19:04. Civil Dark: 19:49 - 06:31. Nautical Dark: 20:28 - 05:52. Astro Dark: 21:08 - 05:12

Total Clouds (% Sky Obscured)

64
64
58
58
67
61
56
55
57
66
75
89
92
96
98
100
92
86
79
86
93
100
87
69

Low Clouds (% Sky Obscured)

64
64
58
58
66
61
53
47
57
57
60
65
57
66
74
80
68
56
41
42
43
44
47
47

Medium Clouds (% Sky Obscured)

0
0
0
6
53
34
32
26
24
30
47
64
83
81
92
100
92
84
72
74
49
84
70
22

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
25
17
8
0
23
37
51
38
25

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

22
22
36
38
31
42
46
19
18
24
27
63
76
84
69
58
42
41
18
21
23
16
27
26

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0.4
0.7
0.3
0.2
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
11
9
8
5
3
3
5
7
10
13
15
15
16
18
17
17
17
15
15
16
15
15
14

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
10
10
9
9
9
9
8
9
10
10
9
8
9
10
10
10
8
7
6
5
5
3
2

Relative Humidity (%)

96
96
96
96
95
95
95
93
95
90
84
77
74
75
83
86
83
81
78
74
71
67
58
57

Pressure (mb)

1009
1009
1010
1010
1009
1010
1010
1010
1011
1012
1013
1013
1013
1014
1014
1015
1015
1016
1016
1017
1018
1019
1019
1020

Ozone (du)

310
311
312
313
312
313
314
314
314
314
314
315
316
317
318
318
319
320
322
322
321
321
321
321

Monday 22

Waxing Crescent 1%

07:43

19:15

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

Sun - Rise: 07:05, Set: 19:15, Transit: 13:10. Moon - Rise: 07:43, Set: 19:15. Civil Dark: 19:47 - 06:32. Nautical Dark: 20:26 - 05:54. Astro Dark: 21:06 - 05:14

Total Clouds (% Sky Obscured)

55
53
46
38
22
10
3
8
14
14
17
19
28
28
28
20
17
12
6
5
5
6
4
3

Low Clouds (% Sky Obscured)

47
35
20
4
1
1
1
8
14
14
17
19
28
28
28
20
17
12
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
7
15
22
13
6
0
0
4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
1
2
2
0
0
4
0
0
0
0
5
3
3
0
2
2
2
1
2
3
2
1

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 (%)

7
13
13
1
3
3
1
2
4
0
0
0
0
2
2
0
1
1
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
12
11
10
10
10
9
10
11
13
15
15
15
15
15
14
14
12
10
8
7
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

62
67
69
75
81
81
81
82
81
74
65
57
53
51
48
48
48
55
59
68
70
69
69
72

Pressure (mb)

1020
1021
1021
1021
1022
1022
1022
1023
1024
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1026
1026
1027
1027
1027

Ozone (du)

321
321
321
321
321
319
318
318
318
317
316
313
312
310
309
308
307
305
304
303
303
302
301
301

Tuesday 23

Waxing Crescent 3%

08:54

19:27

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 OK
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

Sun - Rise: 07:06, Set: 19:12, Transit: 13:09. Moon - Rise: 08:54, Set: 19:27. Civil Dark: 19:45 - 06:34. Nautical Dark: 20:23 - 05:55. Astro Dark: 21:03 - 05:16

Total Clouds (% Sky Obscured)

3
0
2
5
4
6
7
8
10
12
33
50
64
71
79
89
84
79
74
72
71
70
78
85

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
10
22
34
49
54
51
46
36
31
34
41
48
63
73

Medium Clouds (% Sky Obscured)

0
0
0
0
2
3
3
8
10
12
24
20
20
26
35
40
31
19
14
13
13
14
20
28

High Clouds (% Sky Obscured)

1
0
1
2
1
2
5
5
5
7
15
24
29
30
32
40
37
21
0
0
0
0
32
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 (%)

0
1
1
0
1
1
0
0
0
0
0
0
0
0
1
0
3
5
4
6
5
2
4
4

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

Chance of Frost

Temperature (°C)

7
6
6
6
6
6
6
5
7
9
11
12
13
15
15
14
14
14
13
12
12
11
11
11

Feels Like (°C)

5
5
5
5
4
4
4
4
4
5
5
6
6
7
13
12
12
12
12
12
9
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

78
82
78
76
79
79
80
85
79
75
71
66
62
58
58
60
60
64
69
72
72
72
73
71

Pressure (mb)

1027
1027
1027
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

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

Wednesday 24

Waxing Crescent 7%

10:05

19:40

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

Sun - Rise: 07:08, Set: 19:10, Transit: 13:09. Moon - Rise: 10:05, Set: 19:40. Civil Dark: 19:43 - 06:35. Nautical Dark: 20:21 - 05:57. Astro Dark: 21:01 - 05:17

Total Clouds (% Sky Obscured)

100
97
95
92
94
97
100
100
97
100
95
90
84
89
93
98
98
98
99
99
100
100
100
99

Low Clouds (% Sky Obscured)

69
65
67
69
65
60
56
64
71
79
75
72
61
68
74
81
79
80
80
80
80
80
81
81

Medium Clouds (% Sky Obscured)

37
50
57
64
60
57
49
37
34
35
25
21
19
24
29
29
29
33
29
34
39
40
40
30

High Clouds (% Sky Obscured)

100
68
35
2
35
68
97
96
96
86
60
46
31
34
29
28
25
32
34
56
78
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
7
7
4
7
7
5
33
47
58
51
48
49
41
33
17
19
22
24
19
12
14
15
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
11
11
9
8
6
8
10
11
12
13
15
15
15
15
14
12
11
11
10
10
9

Feels Like (°C)

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

Dew Point (°C)

6
6
6
6
6
6
5
5
5
5
6
5
5
5
5
5
6
6
6
6
6
5
5
5

Relative Humidity (%)

70
68
68
70
72
77
84
90
81
73
67
62
58
53
52
52
52
58
64
71
72
72
72
73

Pressure (mb)

1025
1025
1025
1025
1024
1024
1024
1024
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1025
1025
1025
1026
1026

Ozone (du)

304
304
305
306
307
308
309
309
309
309
309
309
309
309
308
308
307
307
307
307
307
307
307
306

Forecast for Upton, Cornwall, United Kingdom (50.54,-4.43)

Generated: 18/09/25 16:11:37. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00