Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 1%

08:19

14:55

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

Sun - Rise: 08:12, Set: 16:03, Transit: 12:07. Moon - Rise: 08:19, Set: 14:55. Civil Dark: 16:43 - 07:32. Nautical Dark: 17:26 - 06:49. Astro Dark: 18:06 - 06:08

Total Clouds (% Sky Obscured)

97
98
98
97
96
66
100
100
100
75
50
37
46
50
55
55
55
53
50
51
47
58
59
52

Low Clouds (% Sky Obscured)

52
59
57
48
0
30
16
37
0
7
34
28
46
50
55
55
55
53
50
51
47
58
59
52

Medium Clouds (% Sky Obscured)

91
98
98
33
20
1
72
40
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

97
98
98
97
96
66
100
100
100
75
50
6
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
9
64
16
17
5
0
0
0
0
0
0
0
10
2
1
0
10
2
11
1
1
6
0

Precipitation Amount (mm)

0
0
0.5
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
15
14
14
13
12
8
9
12
13
14
14
13
13
13
14
14
14
14
13
11
10
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
91
90
83
84
87
84
82
79
75
79
79
84
85
85
82
81
80
78
77
77
78
84
87

Pressure (mb)

998
999
1000
1001
1003
1004
1006
1007
1008
1008
1009
1010
1011
1012
1013
1014
1014
1015
1015
1015
1016
1016
1017
1017

Ozone (du)

328
340
353
360
364
363
358
360
361
359
360
367
368
372
366
369
368
364
354
347
320
306
296
288

Friday 19

Waning Crescent 0%

09:12

15:49

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

Sun - Rise: 08:13, Set: 16:03, Transit: 12:08. Moon - Rise: 09:12, Set: 15:49. Civil Dark: 16:43 - 07:32. Nautical Dark: 17:26 - 06:49. Astro Dark: 18:07 - 06:09

Total Clouds (% Sky Obscured)

44
41
31
12
0
0
26
47
56
68
48
72
56
64
55
51
55
59
35
42
44
58
61
66

Low Clouds (% Sky Obscured)

44
41
31
12
0
0
26
47
56
68
48
69
56
64
55
51
55
59
35
42
44
50
50
51

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
0
17
15
20
42
52
59

High Clouds (% Sky Obscured)

0
0
1
1
0
0
0
0
0
0
0
0
0
0
1
9
10
11
2
9
20
20
25
33

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
1
2
1
3
1
1
0
0
1
1
1
1
3
7
10

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
7
7
7
7
7
7
8
8
8
7
8
8
10
12
13
13
14
14
14
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

6
6
6
5
5
5
4
4
4
4
4
5
5
5
4
4
4
4
5
5
5
5
5
4

Relative Humidity (%)

90
90
90
87
87
88
90
90
90
88
88
90
90
90
87
85
79
75
75
74
77
78
81
81

Pressure (mb)

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

Ozone (du)

284
285
284
286
288
289
288
285
285
285
285
285
286
293
301
302
304
306
315
310
303
302
303
303

Saturday 20

New Moon 2%

09:53

16:56

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

Sun - Rise: 08:13, Set: 16:04, Transit: 12:08. Moon - Rise: 09:53, Set: 16:56. Civil Dark: 16:44 - 07:33. Nautical Dark: 17:27 - 06:50. Astro Dark: 18:07 - 06:09

Total Clouds (% Sky Obscured)

88
94
100
100
100
100
100
96
97
99
95
89
82
91
82
79
82
92
94
96
97
98
98
100

Low Clouds (% Sky Obscured)

55
59
58
75
87
91
100
90
93
98
84
76
74
86
75
69
65
81
75
68
55
72
83
95

Medium Clouds (% Sky Obscured)

77
81
93
100
100
98
99
92
94
96
89
71
65
71
65
60
70
69
83
89
96
97
92
100

High Clouds (% Sky Obscured)

65
80
100
85
99
94
21
10
25
30
40
45
45
51
45
31
35
64
68
67
68
42
55
72

ISS Passover

Visibility (miles)

9
9
9
9
9
9
3
3
9
7
6
9
9
9
9
9
9
9
5
7
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
Light Rain
Light Rain
Light Rain
None
None
None
None
None
None
None
None
Very Light Rain
None
Very Light Rain
None
None
None
None
None

Precipitation Probability (%)

12
17
37
23
46
74
83
69
42
45
41
32
38
48
33
37
59
54
57
49
27
25
13
12

Precipitation Amount (mm)

0
0
0
0
0
0.5
0.8
0.5
0
0
0
0
0
0
0
0
0.3
0
0.2
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
9
9
9
9
9
8
8

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
79
78
84
87
91
93
91
93
94
94
94
94
93
93
90
93
93
90
85
84
87
88

Pressure (mb)

1006
1006
1006
1006
1005
1005
1004
1004
1004
1004
1004
1003
1003
1004
1004
1004
1004
1004
1003
1003
1003
1004
1004
1004

Ozone (du)

307
307
308
315
343
338
322
326
328
331
348
361
371
378
384
393
397
403
405
405
413
419
419
417

Sunday 21

Waxing Crescent 6%

10:23

No Set

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

Sun - Rise: 08:14, Set: 16:04, Transit: 12:09. Moon - Rise: 10:23, Set: No Set. Civil Dark: 16:44 - 07:33. Nautical Dark: 17:27 - 06:50. Astro Dark: 18:07 - 06:10

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
99
99
97
97
96
95
95
95
96
98
96
94
94
93
94
94

Low Clouds (% Sky Obscured)

96
91
87
85
83
80
75
67
68
68
67
63
66
67
67
66
65
63
67
74
81
79
73
68

Medium Clouds (% Sky Obscured)

62
55
60
67
67
71
70
68
66
72
70
60
80
79
75
77
84
92
91
89
87
88
88
87

High Clouds (% Sky Obscured)

100
100
100
100
100
100
68
33
5
5
10
26
36
36
41
47
48
44
33
13
2
11
21
31

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

Precipitation Probability (%)

36
46
50
51
56
64
54
41
13
13
16
10
9
6
2
2
1
1
2
11
9
8
3
14

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

8
8
8
8
8
8
8
8
8
8
8
8
7
7
7
7
7
8
8
8
8
8
8
7

Feels Like (°C)

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

Dew Point (°C)

6
5
5
5
4
4
5
5
5
5
5
5
5
4
4
4
4
4
4
5
5
5
6
6

Relative Humidity (%)

87
84
82
82
77
77
79
82
84
84
84
85
85
84
84
81
79
78
77
79
81
82
87
90

Pressure (mb)

1004
1004
1004
1005
1005
1005
1005
1005
1006
1006
1006
1006
1007
1007
1008
1008
1009
1009
1009
1009
1009
1010
1010
1011

Ozone (du)

415
414
413
411
410
408
407
407
410
412
413
415
416
416
416
414
415
417
423
426
430
432
432
429

Monday 22

Waxing Crescent 12%

10:45

18:10

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

Sun - Rise: 08:14, Set: 16:05, Transit: 12:09. Moon - Rise: 10:45, Set: 18:10. Civil Dark: 16:45 - 07:34. Nautical Dark: 17:28 - 06:51. Astro Dark: 18:08 - 06:10

Total Clouds (% Sky Obscured)

96
98
94
91
100
68
65
62
92
60
78
73
86
92
97
94
92
90
91
94
95
96
95
96

Low Clouds (% Sky Obscured)

76
85
93
88
82
68
65
62
91
60
78
73
86
92
83
71
67
69
64
65
65
71
82
70

Medium Clouds (% Sky Obscured)

85
81
58
48
72
35
24
11
2
2
2
2
6
3
2
5
10
20
30
35
35
30
22
9

High Clouds (% Sky Obscured)

47
51
62
65
70
65
50
39
33
13
21
17
43
36
29
39
68
90
90
90
88
77
69
59

ISS Passover

Visibility (miles)

4
4
9
9
8
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 (%)

36
31
10
16
10
0
0
0
0
0
0
0
0
0
0
1
1
1
2
3
3
5
5
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
7
6
6
7
7
8
8
9
9
9
10
9
9
10
11
11
11
12
12
12
12

Chance of Frost

Temperature (°C)

7
7
7
6
6
6
6
5
5
5
5
5
5
5
5
5
6
6
7
7
7
7
7
6

Feels Like (°C)

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

Dew Point (°C)

5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5

Relative Humidity (%)

88
91
91
91
91
93
91
93
93
94
93
93
93
93
91
93
91
90
87
88
88
88
90
91

Pressure (mb)

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

Ozone (du)

423
420
417
414
411
407
406
406
404
400
397
396
397
397
398
398
399
400
401
399
398
397
394
392

Tuesday 23

Waxing Crescent 19%

11:01

19:28

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

Sun - Rise: 08:14, Set: 16:05, Transit: 12:10. Moon - Rise: 11:01, Set: 19:28. Civil Dark: 16:45 - 07:34. Nautical Dark: 17:28 - 06:51. Astro Dark: 18:09 - 06:10

Total Clouds (% Sky Obscured)

97
98
99
96
93
89
90
91
95
97
99
99
99
99
99
94
87
80
72
70
66
73
78
86

Low Clouds (% Sky Obscured)

78
84
93
83
70
51
60
70
80
85
89
92
92
92
92
85
80
76
72
67
64
70
74
80

Medium Clouds (% Sky Obscured)

4
1
0
7
14
21
14
9
4
4
5
5
6
6
7
16
21
29
20
11
1
1
0
0

High Clouds (% Sky Obscured)

67
74
89
61
30
0
0
0
0
5
18
22
30
37
43
32
20
7
5
3
1
1
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 (%)

5
3
1
2
3
0
1
2
1
9
12
13
13
11
5
12
15
17
15
13
8
9
7
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
13
13
14
13
12
12
13
13
14
14
14
14
14
14
14
15
17
18
18
18
18
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
1
1
1
1
1
1
-1
-1
0
-0
0
0
1
1
0
0
1
1
0
-1
-1
-1
-1

Dew Point (°C)

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

Relative Humidity (%)

94
90
85
81
86
89
94
93
93
93
91
90
90
88
86
83
82
81
78
78
76
75
75
72

Pressure (mb)

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

Ozone (du)

389
389
388
388
388
388
387
385
384
382
382
382
382
385
388
391
388
384
381
379
376
374
372
370

Wednesday 24

Waxing Crescent 28%

11:15

20:46

18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 OK

Sun - Rise: 08:15, Set: 16:06, Transit: 12:10. Moon - Rise: 11:15, Set: 20:46. Civil Dark: 16:46 - 07:35. Nautical Dark: 17:29 - 06:51. Astro Dark: 18:09 - 06:11

Total Clouds (% Sky Obscured)

77
61
56
57
62
81
81
72
58
38
24
23
20
30
38
34
34
31

Low Clouds (% Sky Obscured)

76
61
56
57
62
81
81
72
58
38
24
23
20
30
38
34
34
31

Medium Clouds (% Sky Obscured)

4
8
21
31
38
40
40
40
35
27
16
11
7
5
0
16
34
31

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
20
28

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
None
None
None
None
None
None
None
None

Precipitation Probability (%)

6
7
7
21
27
30
37
45
53
47
39
25
20
14
2
7
9
10

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

4
4
3
3
3
3
3
3
2
2
2
2
2
2
2
2
3
3

Feels Like (°C)

-1
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-3
-2
-3
-3
-3
-3
-3

Dew Point (°C)

-1
-1
-1
-2
-1
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2
-2

Relative Humidity (%)

71
72
73
74
74
74
74
74
74
74
76
74
76
74
74
76
72
68

Pressure (mb)

1024
1024
1024
1024
1024
1023
1022
1022
1022
1022
1022
1022
1022
1022
1022
1023
1022
1022

Ozone (du)

368
367
365
364
360
355
351
351
350
349
346
342
338
338
338
338
337
337

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

Generated: 18/12/25 18:26:00. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+0.00