Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 14

Waning Crescent 27%

02:09

13:10

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

Sun - Rise: 07:30, Set: 16:39, Transit: 12:05. Moon - Rise: 02:09, Set: 13:10. Civil Dark: 17:11 - 06:58. Nautical Dark: 17:46 - 06:23. Astro Dark: 18:20 - 05:49

Total Clouds (% Sky Obscured)

42
46
47
53
54
48
51
50
54
41
47
47
88
73
53
79
97
93
63
54
48
62
52
41

Low Clouds (% Sky Obscured)

28
31
32
32
38
36
38
38
37
32
32
33
25
26
23
27
30
26
22
15
15
19
23
24

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
13
19
40
24
48
13
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
12
4
76
43
4
40
85
69
11
3
3
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
1
1
2
25
45
8
2
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
1
1
2
0
0
0
0
1
0
0
0
0
0
4
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)

3
3
2
2
3
3
3
3
3
3
2
2
1
2
2
2
3
3
2
1
3
1
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
78
78
80
79
81
79
81
79
73
66
62
59
59
60
62
67
74
77
79
77
78
78
80

Pressure (mb)

1026
1026
1027
1027
1026
1026
1026
1027
1027
1028
1028
1028
1027
1027
1026
1026
1026
1026
1026
1027
1026
1027
1027
1027

Ozone (du)

285
285
286
286
288
291
290
287
286
286
288
289
287
284
283
282
284
286
288
289
293
297
303
308

Monday 15

Waning Crescent 19%

03:11

13:32

00 OK
01 OK
02 OK
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: 07:30, Set: 16:40, Transit: 12:05. Moon - Rise: 03:11, Set: 13:32. Civil Dark: 17:11 - 06:59. Nautical Dark: 17:46 - 06:24. Astro Dark: 18:20 - 05:50

Total Clouds (% Sky Obscured)

38
33
37
64
68
90
100
82
54
68
96
61
100
72
97
92
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

24
18
22
28
39
33
33
30
27
21
15
9
3
0
0
0
0
0
0
0
0
4
11
10

Medium Clouds (% Sky Obscured)

0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
22
52
80
100
81
100
100
81
100

High Clouds (% Sky Obscured)

0
0
0
6
0
90
96
82
0
9
96
29
100
65
97
80
100
100
100
100
100
100
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 (%)

2
8
14
5
47
52
58
61
56
51
19
8
6
4
2
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
1
1
2
1
2
3
1
1
0
0
0
0
0
0
0
0
0
1
0
10
20

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
78
78
78
79
78
78
78
78
73
67
64
64
64
60
61
69
75
76
76
76
73
73
71

Pressure (mb)

1027
1027
1027
1026
1026
1026
1026
1026
1026
1026
1026
1026
1026
1024
1024
1023
1024
1024
1024
1024
1023
1023
1023
1022

Ozone (du)

309
309
308
306
305
303
304
305
308
307
308
308
309
311
311
311
309
308
308
310
312
313
311
312

Tuesday 16

Waning Crescent 12%

04:14

13:57

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: 07:31, Set: 16:40, Transit: 12:06. Moon - Rise: 04:14, Set: 13:57. Civil Dark: 17:11 - 07:00. Nautical Dark: 17:47 - 06:24. Astro Dark: 18:20 - 05:51

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
96
95
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
91

Low Clouds (% Sky Obscured)

3
3
3
59
70
36
49
52
77
79
67
71
86
74
81
87
88
85
75
87
86
84
83
82

Medium Clouds (% Sky Obscured)

93
100
97
100
96
91
96
95
94
99
100
100
100
100
100
100
100
99
91
100
100
100
92
87

High Clouds (% Sky Obscured)

100
100
100
100
100
100
56
54
100
100
100
100
100
100
100
100
100
100
100
100
100
100
67
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
8
6

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

Precipitation Probability (%)

13
5
13
19
23
15
15
7
17
17
37
57
53
60
58
70
72
78
95
91
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0
0
0
0
0
0.3
0.5
0.6
1.4
1.8
0.9
0.6

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

68
68
65
64
63
62
61
59
58
54
53
50
45
45
51
59
62
63
60
58
61
63
63
66

Pressure (mb)

1022
1021
1021
1021
1020
1020
1019
1019
1019
1019
1020
1019
1018
1018
1018
1018
1017
1017
1017
1017
1017
1017
1018
1018

Ozone (du)

313
314
314
314
315
315
310
310
308
307
307
308
307
308
307
307
304
301
298
301
302
302
301
302

Wednesday 17

Waning Crescent 7%

05:18

14:27

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: 07:32, Set: 16:40, Transit: 12:06. Moon - Rise: 05:18, Set: 14:27. Civil Dark: 17:12 - 07:00. Nautical Dark: 17:47 - 06:25. Astro Dark: 18:21 - 05:51

Total Clouds (% Sky Obscured)

87
88
88
87
92
96
100
89
79
68
80
91
83
97
91
75
100
96
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

81
79
80
78
78
78
78
80
79
68
63
46
50
60
57
38
31
23
23
25
29
31
29
27

Medium Clouds (% Sky Obscured)

83
86
87
86
76
38
100
89
71
55
43
13
12
10
13
14
12
19
48
65
47
60
56
43

High Clouds (% Sky Obscured)

10
20
20
20
39
59
80
61
43
3
60
87
38
76
42
35
100
92
100
100
100
100
100
100

ISS Passover

Visibility (miles)

4
3
6
9
9
9
2
3
2
4
3
5
6
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

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

Precipitation Probability (%)

95
95
89
77
71
95
95
95
95
95
91
73
54
39
19
21
15
10
5
13
13
5
14
10

Precipitation Amount (mm)

0.9
0.8
0.3
0.2
0.2
0.9
1.7
1.2
1.3
0.7
0.8
0.5
0.2
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

77
86
89
87
86
83
87
90
90
92
89
86
83
81
82
83
86
90
90
90
92
92
92
92

Pressure (mb)

1018
1018
1018
1018
1018
1018
1019
1019
1020
1021
1022
1022
1022
1023
1023
1024
1024
1025
1025
1026
1026
1027
1027
1027

Ozone (du)

305
304
307
309
313
315
312
313
312
313
316
322
325
321
320
317
314
314
314
316
318
318
319
321

Thursday 18

Waning Crescent 3%

06:21

15:04

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: 07:32, Set: 16:41, Transit: 12:06. Moon - Rise: 06:21, Set: 15:04. Civil Dark: 17:12 - 07:01. Nautical Dark: 17:47 - 06:26. Astro Dark: 18:21 - 05:52

Total Clouds (% Sky Obscured)

100
99
100
100
99
98
97
98
99
100
92
89
83
76
71
62
72
81
86
92
96
98
99
99

Low Clouds (% Sky Obscured)

26
30
31
33
34
37
36
24
12
2
1
0
0
0
0
0
0
0
0
9
17
25
22
20

Medium Clouds (% Sky Obscured)

35
24
24
15
17
52
86
85
87
85
81
41
45
49
52
55
39
22
5
3
3
3
2
3

High Clouds (% Sky Obscured)

100
98
100
100
98
96
92
95
98
100
46
70
51
49
40
44
34
46
62
82
96
98
98
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
18
14
5
18
16
2
7
4
2
3
2
2
5
12
3
16
17
1
6
9
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
87
87
84
84
86
83
84
83
80
76
69
66
64
66
68
72
73
76
78
79
79
79
77

Pressure (mb)

1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1027
1027

Ozone (du)

321
320
320
319
319
321
325
329
331
332
332
330
328
327
327
327
327
327
327
328
328
329
329
329

Friday 19

Waning Crescent 1%

07:20

15:49

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: 07:33, Set: 16:41, Transit: 12:07. Moon - Rise: 07:20, Set: 15:49. Civil Dark: 17:13 - 07:01. Nautical Dark: 17:48 - 06:26. Astro Dark: 18:22 - 05:52

Total Clouds (% Sky Obscured)

99
98
97
95
95
96
97
98
99
100
97
94
91
94
97
100
100
100
100
100
99
99
99
100

Low Clouds (% Sky Obscured)

15
10
7
7
5
3
2
2
1
0
1
2
3
3
3
3
3
2
1
1
2
2
8
17

Medium Clouds (% Sky Obscured)

5
16
31
46
38
31
24
18
11
5
15
26
35
56
74
93
89
85
88
92
94
99
99
100

High Clouds (% Sky Obscured)

99
98
97
95
95
96
97
98
99
100
97
94
91
94
97
100
100
100
100
99
97
96
97
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
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
2
2
1
4
7
1
4
5
1
3
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

11
11
10
9
10
9
9
9
9
9
10
10
11
11
15
16
15
15
14
13
11
11
10
10

Dew Point (°C)

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

Relative Humidity (%)

76
73
72
69
67
66
65
62
58
55
52
50
47
44
47
51
54
54
54
55
56
57
55
57

Pressure (mb)

1027
1027
1026
1026
1025
1025
1025
1024
1024
1024
1024
1024
1023
1023
1022
1022
1022
1021
1021
1021
1020
1020
1020
1019

Ozone (du)

330
330
330
330
330
330
330
330
328
327
326
327
329
330
330
329
329
329
329
330
330
331
332
331

Saturday 20

New Moon 0%

08:14

16:42

Sun - Rise: 07:33, Set: 16:41, Transit: 12:07. Moon - Rise: 08:14, Set: 16:42. Civil Dark: 17:13 - 07:02. Nautical Dark: 17:48 - 06:27. Astro Dark: 18:22 - 05:53

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

Forecast for Testaccio, Province of Rome, Italy (41.86,12.48)

Generated: 14/12/25 00:03:36. Forecast: 14/12/25 to 20/12/25. Timezone: UTC+1.00