Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

03:49

18:35

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 06:52, Set: 19:17, Transit: 13:03. Moon - Rise: 03:49, Set: 18:35. Civil Dark: 19:50 - 06:19. Nautical Dark: 20:30 - 05:40. Astro Dark: 21:11 - 04:58

Total Clouds (% Sky Obscured)

97
95
91
99
94
93
100
94
90
85
56
81
100
95
100
86
82
98
97
88
82
73
100
100

Low Clouds (% Sky Obscured)

53
31
30
45
41
48
43
46
50
44
42
78
75
55
67
66
71
70
69
83
75
58
41
50

Medium Clouds (% Sky Obscured)

46
44
5
3
15
1
6
45
20
11
3
3
3
18
6
31
30
3
3
15
10
16
14
18

High Clouds (% Sky Obscured)

81
81
90
90
93
88
100
89
76
75
52
68
100
88
100
86
82
98
72
15
55
44
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
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
88
92
90
90
93
93
95
93
95
93
93
95
92
85
74
69
61
54
47
46
49
53
60

Pressure (mb)

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

Ozone (du)

260
260
259
259
258
259
259
258
259
260
261
258
258
259
259
261
261
261
264
266
267
268
267
268

Friday 19

Waning Crescent 2%

05:07

18:47

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Good

Sun - Rise: 06:54, Set: 19:14, Transit: 13:03. Moon - Rise: 05:07, Set: 18:47. Civil Dark: 19:48 - 06:21. Nautical Dark: 20:27 - 05:41. Astro Dark: 21:09 - 05:00

Total Clouds (% Sky Obscured)

100
98
100
96
100
92
83
86
92
85
100
100
100
100
100
100
100
100
100
100
79
75
45
0

Low Clouds (% Sky Obscured)

29
41
54
53
45
49
48
72
72
63
53
53
47
58
94
89
85
66
73
100
68
75
45
0

Medium Clouds (% Sky Obscured)

11
12
0
0
0
2
21
2
3
21
5
38
28
29
30
62
67
96
74
100
36
35
2
0

High Clouds (% Sky Obscured)

100
87
100
86
86
81
68
67
79
39
100
100
99
100
100
100
100
100
94
34
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
5
3
4
4
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
8
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
Very Light Rain
Very Light Rain
Very Light Rain
Very Light Rain
Light Rain
Light Rain
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
1
1
4
11
49
64
68
63
78
73
21
5

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
6
5
4
4
3
3
4
4
4
4
3
4
5
6
10
12
14
16
17
17
18
17
15

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
73
75
79
82
83
83
82
84
86
89
90
93
90
86
78
76
69
76
88
85
83
90
86

Pressure (mb)

1015
1015
1015
1014
1014
1013
1013
1012
1012
1011
1011
1010
1010
1009
1009
1009
1009
1007
1006
1006
1005
1005
1005
1006

Ozone (du)

267
267
268
269
268
269
270
268
267
267
264
264
265
265
264
264
266
267
268
270
272
281
284
287

Saturday 20

Waning Crescent 0%

06:22

18:57

19 Bad
20 Bad
21 Bad
22 OK
23 Bad
00 OK
01 OK
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

Sun - Rise: 06:56, Set: 19:12, Transit: 13:03. Moon - Rise: 06:22, Set: 18:57. Civil Dark: 19:45 - 06:22. Nautical Dark: 20:25 - 05:43. Astro Dark: 21:06 - 05:02

Total Clouds (% Sky Obscured)

43
64
51
40
57
37
39
49
61
71
90
84
91
95
94
92
88
85
88
91
95
95
95
96

Low Clouds (% Sky Obscured)

43
63
49
40
55
37
39
49
51
52
61
74
82
52
70
65
49
66
67
72
79
67
57
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
3
9
9
10
18
22
31
28
30
34
33
24
27
57
72
82
41
42

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)

9
9
9
9
9
9
9
9
9
9
9
9
9
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
13
5
1
2
1
1
5
19
8
5
16
13
16
13
8
4
4
4
3
1
3
5
6

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

Chance of Frost

Temperature (°C)

14
13
13
13
12
12
11
11
11
12
11
12
12
11
12
12
12
13
13
14
14
14
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
89
82
79
79
79
84
91
92
93
93
92
88
88
87
84
79
69
64
58
54
53
56
56

Pressure (mb)

1007
1008
1008
1008
1008
1008
1008
1008
1008
1009
1009
1010
1011
1012
1013
1014
1014
1015
1015
1015
1015
1016
1016
1017

Ozone (du)

290
292
299
305
304
302
303
304
305
306
307
307
308
310
311
312
313
313
313
313
314
315
315
317

Sunday 21

New Moon 1%

07:35

19:07

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

Sun - Rise: 06:57, Set: 19:10, Transit: 13:02. Moon - Rise: 07:35, Set: 19:07. Civil Dark: 19:43 - 06:24. Nautical Dark: 20:22 - 05:45. Astro Dark: 21:03 - 05:04

Total Clouds (% Sky Obscured)

96
95
94
85
95
97
88
31
53
13
14
14
16
20
17
22
30
37
43
43
39
32
22
13

Low Clouds (% Sky Obscured)

43
42
42
28
14
0
7
14
20
13
14
14
16
20
17
22
30
37
43
40
35
29
21
13

Medium Clouds (% Sky Obscured)

50
49
90
80
59
64
48
31
15
10
5
0
2
2
0
1
2
2
3
4
5
3
1
0

High Clouds (% Sky Obscured)

0
0
0
2
5
7
5
3
3
0
0
1
0
0
0
0
0
4
2
1
0
2
2
2

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 (%)

12
18
24
20
16
4
3
2
0
0
0
0
0
0
0
0
0
0
0
1
0
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

54
53
64
64
69
68
65
67
72
74
77
79
84
81
72
64
56
49
44
41
39
39
40
45

Pressure (mb)

1018
1019
1019
1020
1020
1021
1021
1021
1022
1022
1022
1023
1023
1024
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025

Ozone (du)

317
317
317
317
318
318
319
320
321
322
319
319
319
319
317
315
313
312
310
310
309
308
306
304

Monday 22

Waxing Crescent 3%

08:48

19:07

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

Sun - Rise: 06:59, Set: 19:07, Transit: 13:02. Moon - Rise: 08:48, Set: 19:07. Civil Dark: 19:41 - 06:26. Nautical Dark: 20:20 - 05:47. Astro Dark: 21:01 - 05:06

Total Clouds (% Sky Obscured)

20
27
33
22
12
3
3
5
5
7
6
9
32
50
80
82
80
78
82
88
92
95
95
100

Low Clouds (% Sky Obscured)

20
27
33
22
12
0
0
0
0
0
0
1
12
25
34
27
24
22
30
39
48
54
56
68

Medium Clouds (% Sky Obscured)

0
0
0
0
2
2
2
2
2
2
2
4
9
6
5
10
15
23
31
35
35
35
30
15

High Clouds (% Sky Obscured)

2
2
2
2
2
0
0
1
1
1
1
6
23
47
77
64
33
1
28
51
65
60
55
60

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
1
0
3
2
0
13
15
14

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

50
51
54
61
66
69
71
75
78
82
84
84
87
79
74
68
62
56
50
49
47
46
50
55

Pressure (mb)

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

Ozone (du)

304
304
303
302
301
301
301
302
301
300
298
298
299
299
299
299
299
299
299
300
300
300
301
301

Tuesday 23

Waxing Crescent 7%

10:00

19:18

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 07:00, Set: 19:05, Transit: 13:02. Moon - Rise: 10:00, Set: 19:18. Civil Dark: 19:38 - 06:27. Nautical Dark: 20:17 - 05:48. Astro Dark: 20:58 - 05:08

Total Clouds (% Sky Obscured)

100
100
100
91
82
74
63
53
36
49
64
81
63
45
37
56
74
86
95
93
93
91
91
83

Low Clouds (% Sky Obscured)

75
85
92
87
80
70
54
39
24
23
26
33
35
41
37
56
74
86
86
86
77
75
76
74

Medium Clouds (% Sky Obscured)

10
5
5
5
5
5
15
20
30
35
35
35
33
26
20
16
22
18
20
18
15
15
14
14

High Clouds (% Sky Obscured)

65
85
90
91
82
74
63
53
36
49
64
81
63
35
5
31
58
85
86
87
88
90
87
79

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
Very Light Rain
Very Light Rain
Light Rain
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 (%)

21
25
28
33
37
39
55
67
75
69
64
59
55
50
48
41
32
13
19
19
10
20
21
16

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
10
10
10
11
11
11
7
7
7
7
7
7
5
6
6
7
7
8
13
13
12
12
13

Dew Point (°C)

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

Relative Humidity (%)

60
62
64
66
72
77
82
84
85
87
87
87
87
79
72
66
59
50
44
44
45
46
50
55

Pressure (mb)

1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1024
1024
1024
1024

Ozone (du)

301
301
301
301
302
303
303
305
307
308
309
310
311
310
310
310
311
311
312
312
312
312
311
311

Wednesday 24

Waxing Crescent 13%

11:14

19:30

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
12 Bad

Sun - Rise: 07:02, Set: 19:03, Transit: 13:01. Moon - Rise: 11:14, Set: 19:30. Civil Dark: 19:36 - 06:29. Nautical Dark: 20:15 - 05:50. Astro Dark: 20:56 - 05:09

Total Clouds (% Sky Obscured)

72
58
60
65
74
89
93
95
100
100
100
100
100
100
100
100
100
99

Low Clouds (% Sky Obscured)

72
58
60
65
74
74
73
73
69
68
80
94
95
96
96
97
98
99

Medium Clouds (% Sky Obscured)

14
15
25
35
40
40
40
40
35
35
30
35
35
45
50
52
54
47

High Clouds (% Sky Obscured)

72
58
60
65
74
79
89
94
100
100
100
99
81
64
51
39
26
12

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

24
23
24
25
27
22
29
34
35
46
54
59
57
58
59
52
44
37

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
62
65
68
72
77
81
80
77
76
74
74
75
73
71
70
65
61

Pressure (mb)

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

Ozone (du)

311
310
309
308
308
307
307
306
305
305
305
305
305
305
305
304
303
302

Forecast for Bristol, Bristol, United Kingdom (51.45,-2.59)

Generated: 18/09/25 18:52:13. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+1.00