Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 19

Waning Crescent 0%

08:18

16:44

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

Sun - Rise: 07:37, Set: 16:43, Transit: 12:10. Moon - Rise: 08:18, Set: 16:44. Civil Dark: 17:15 - 07:05. Nautical Dark: 17:50 - 06:30. Astro Dark: 18:24 - 05:56

Total Clouds (% Sky Obscured)

26
40
56
87
100
99
100
100
90
96
100
100
100
100
100
95
93
92
89
64
77
82
100
98

Low Clouds (% Sky Obscured)

3
3
3
3
3
2
2
0
0
6
7
4
7
3
5
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

26
40
56
87
97
95
71
91
90
96
100
100
99
99
99
95
93
92
89
64
77
82
88
87

High Clouds (% Sky Obscured)

0
40
56
58
100
92
100
100
3
0
2
100
100
100
100
70
75
69
52
36
25
31
100
85

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 (%)

2
4
3
2
6
12
14
14
14
10
7
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
84
83
83
81
81
81
81
80
79
77
71
68
67
66
64
65
70
71
72
72
73
75
73

Pressure (mb)

1021
1020
1020
1020
1019
1018
1018
1017
1017
1017
1018
1017
1017
1017
1016
1015
1015
1015
1015
1015
1015
1015
1015
1014

Ozone (du)

345
341
336
329
318
312
309
310
314
325
331
328
327
330
331
332
333
336
336
334
329
325
323
322

Saturday 20

New Moon 2%

09:03

17:45

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:37, Set: 16:44, Transit: 12:11. Moon - Rise: 09:03, Set: 17:45. Civil Dark: 17:16 - 07:06. Nautical Dark: 17:51 - 06:30. Astro Dark: 18:25 - 05:56

Total Clouds (% Sky Obscured)

100
100
100
100
78
81
76
85
93
96
98
90
91
92
98
98
96
95
88
90
92
100
99
100

Low Clouds (% Sky Obscured)

0
1
3
3
3
3
3
3
8
12
6
13
23
20
19
19
16
9
1
1
15
24
71
80

Medium Clouds (% Sky Obscured)

85
79
86
90
78
81
70
36
48
75
73
43
54
62
87
92
91
89
87
49
72
74
61
79

High Clouds (% Sky Obscured)

100
100
100
100
15
17
25
57
64
81
98
90
91
92
89
79
59
67
45
52
72
99
42
77

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
1
1
2
2
11
11
1
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
1
2
2
2
3
3
4
6
12
10
15
13

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

7
7
7
7
7
7
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
6
7
7

Relative Humidity (%)

73
76
76
77
76
77
76
74
73
73
73
67
63
59
56
54
57
61
64
69
70
68
71
72

Pressure (mb)

1014
1014
1014
1014
1014
1013
1013
1013
1013
1013
1013
1013
1013
1012
1012
1011
1011
1011
1011
1011
1011
1011
1011
1011

Ozone (du)

318
313
309
305
303
304
307
308
307
304
299
298
299
301
300
298
294
291
290
292
293
293
293
296

Sunday 21

Waxing Crescent 6%

09:41

18:51

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:38, Set: 16:44, Transit: 12:11. Moon - Rise: 09:41, Set: 18:51. Civil Dark: 17:16 - 07:06. Nautical Dark: 17:51 - 06:31. Astro Dark: 18:26 - 05:57

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
100
99
100
100
100
99
98
99
100
100
100
98
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

82
80
76
74
73
74
73
70
70
75
78
81
77
72
70
74
77
74
70
81
33
80
80
79

Medium Clouds (% Sky Obscured)

95
96
82
72
58
75
95
94
92
92
94
82
93
96
100
100
100
95
85
97
86
100
100
100

High Clouds (% Sky Obscured)

86
87
77
100
100
100
100
92
97
100
100
94
60
38
100
5
0
26
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
6
3
9
9
9
9
9
9
5
4
9
9
9
8
6
5
5
5

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

Precipitation Probability (%)

14
17
13
15
19
27
44
47
35
29
26
27
37
43
61
80
73
78
58
71
76
89
91
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
0.4
0.5
0
0
0.3
0.3
0
1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
70
67
66
65
66
67
71
81
79
76
75
72
70
69
74
80
74
76
76
76
75
76
72

Pressure (mb)

1011
1010
1010
1010
1010
1009
1009
1009
1009
1009
1009
1009
1009
1009
1008
1007
1007
1007
1007
1007
1007
1007
1007
1007

Ozone (du)

297
299
300
300
300
303
305
309
316
318
324
329
331
334
339
347
358
366
370
377
381
379
380
385

Monday 22

Waxing Crescent 12%

10:12

19:59

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:38, Set: 16:45, Transit: 12:12. Moon - Rise: 10:12, Set: 19:59. Civil Dark: 17:17 - 07:07. Nautical Dark: 17:52 - 06:31. Astro Dark: 18:26 - 05:57

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

82
61
79
45
45
54
88
88
36
88
87
86
51
47
82
83
85
78
27
24
64
29
64
57

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

5
9
9
9
9
6
5
5
9
9
2
2
9
9
9
9
9
4
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

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

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
75
61
66
61
58
62

Precipitation Amount (mm)

1
0.6
1.1
1.5
1.9
1.4
1.2
0.9
0.8
1.9
3.9
1.3
0.8
1.1
0.8
1
1.6
0.7
0.5
0.2
0.2
0
0
0.2

Wind Speed/Direction (mph)

11
12
13
12
12
12
13
15
18
16
15
14
15
14
14
13
14
12
11
10
10
11
9
11

Chance of Frost

Temperature (°C)

13
13
13
13
13
13
13
13
13
13
13
12
12
13
13
13
13
12
12
12
12
12
12
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
76
76
77
75
79
83
83
79
77
83
89
87
79
75
74
83
90
87
84
84
87
84
77

Pressure (mb)

1007
1006
1006
1006
1005
1005
1005
1004
1004
1004
1005
1005
1004
1004
1003
1003
1003
1003
1002
1002
1003
1003
1003
1002

Ozone (du)

392
398
397
399
404
406
410
413
414
416
416
416
416
415
415
416
418
413
407
405
406
404
401
399

Tuesday 23

Waxing Crescent 19%

10:39

21:07

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
19 Bad
20 Bad
21 Bad
22 Bad

Sun - Rise: 07:39, Set: 16:46, Transit: 12:12. Moon - Rise: 10:39, Set: 21:07. Civil Dark: 17:17 - 07:07. Nautical Dark: 17:53 - 06:32. Astro Dark: 18:27 - 05:58

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
96
90
84
84
84
87
94
97
100
100
100
100
100

Low Clouds (% Sky Obscured)

44
41
51
64
54
39
44
39
48
83
74
52
28
27
31
29
27
29
35
38
36
30
25
22

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
96
79
42
49
55
61
50
35
12
33
55
77
73

High Clouds (% Sky Obscured)

48
99
100
100
100
100
100
100
100
100
100
87
76
50
47
51
61
74
91
100
99
100
100
100

ISS Passover

Visibility (miles)

7
7
9
9
9
9
9
5
5
5
9
9
9
9
9
7
5
3
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

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

Precipitation Probability (%)

63
56
62
58
50
64
73
76
87
84
67
71
71
65
91
75
67
62
55
46
48
49
47
47

Precipitation Amount (mm)

0.2
0
0.2
0
0
0.3
0.4
0.4
0.7
0.5
0
0.4
0.4
0.3
0.8
0.4
0.3
0.2
0.2
0
0
0.2
0.2
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

80
79
77
70
68
80
77
80
80
78
77
73
67
63
61
65
71
76
79
81
83
82
82
81

Pressure (mb)

1002
1003
1002
1003
1003
1003
1003
1003
1004
1005
1005
1006
1007
1007
1007
1007
1007
1007
1007
1008
1008
1008
1009
1009

Ozone (du)

398
398
396
395
398
402
404
406
408
410
411
411
410
411
411
411
410
410
412
413
415
415
415
415

Wednesday 24

Waxing Crescent 28%

11:01

22:15

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
19 Bad
20 Bad
21 OK
22 OK

Sun - Rise: 07:39, Set: 16:46, Transit: 12:13. Moon - Rise: 11:01, Set: 22:15. Civil Dark: 17:18 - 07:07. Nautical Dark: 17:53 - 06:32. Astro Dark: 18:27 - 05:58

Total Clouds (% Sky Obscured)

100
100
75
50
29
44
56
67
50
38
17
26
25
24
28
28
27
32
32
27
23
24
20
13

Low Clouds (% Sky Obscured)

25
24
19
19
19
19
19
19
19
19
17
13
12
11
7
6
8
9
7
4
4
3
2
1

Medium Clouds (% Sky Obscured)

69
65
53
35
21
34
45
60
40
21
7
6
5
20
28
28
27
32
32
21
12
13
15
11

High Clouds (% Sky Obscured)

100
100
67
35
3
7
6
10
5
5
5
10
10
15
15
15
15
11
7
3
4
4
5
3

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

Precipitation Probability (%)

54
64
91
95
95
95
95
95
95
95
95
95
94
82
84
81
73
70
60
45
37
28
10
32

Precipitation Amount (mm)

0
0.3
0.7
1
1.4
1.4
1.5
1.7
1.3
1.3
1.7
1.1
0.7
0.5
0.6
0.5
0.4
0.4
0.3
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

7
8
8
7
7
7
7
7
7
7
7
7
7
7
7
12
13
12
12
13
13
7
7
7

Dew Point (°C)

6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
7
6
6
6

Relative Humidity (%)

81
81
82
82
82
82
84
84
84
82
78
76
70
65
60
62
65
67
72
77
82
82
82
82

Pressure (mb)

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

Ozone (du)

415
415
415
414
413
413
411
409
407
407
408
408
407
406
404
403
402
400
399
398
397
396
394
393

Thursday 25

Waxing Crescent 38%

11:22

No Set

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

Sun - Rise: 07:39, Set: 16:47, Transit: 12:13. Moon - Rise: 11:22, Set: No Set. Civil Dark: 17:19 - 07:08. Nautical Dark: 17:54 - 06:33. Astro Dark: 18:28 - 05:59

Total Clouds (% Sky Obscured)

10
4
4
1
5
3
5
6
28
50
72
52
31
10
10
10
23
31
30
28

Low Clouds (% Sky Obscured)

0
0
0
0
0
2
2
2
2
1
0
0
0
0
0
1
1
1
0
2

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

2
0
0
1
1
2
4
5
27
48
70
49
29
8
8
7
7
7
8
8

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
17
40
41
20
44
44
18
19
15
7
8
7
4
14
17
13
18
16
9

Precipitation Amount (mm)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

6
7
7
6
6
6
5
5
5
5
5
5
6
6
6
13
13
13
13
13

Dew Point (°C)

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

Relative Humidity (%)

84
84
84
84
84
84
82
84
84
78
74
71
65
58
53
56
59
62
66
71

Pressure (mb)

1013
1013
1013
1013
1013
1013
1013
1014
1014
1014
1015
1015
1015
1015
1014
1014
1014
1015
1015
1015

Ozone (du)

393
392
392
392
392
392
391
389
387
386
385
383
383
382
382
380
378
376
376
377

Forecast for Civitavecchia, Province of Rome, Italy (42.09,11.80)

Generated: 19/12/25 23:25:12. Forecast: 19/12/25 to 25/12/25. Timezone: UTC+1.00