Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 21

Waxing Crescent 5%

09:26

17:52

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: 07:08, Set: 16:43, Transit: 11:56. Moon - Rise: 09:26, Set: 17:52. Civil Dark: 17:14 - 06:38. Nautical Dark: 17:48 - 06:04. Astro Dark: 18:22 - 05:30

Total Clouds (% Sky Obscured)

65
78
83
81
100
100
100
97
98
100
96
100
100
100
100
52
84
82
65
80
77
78
99
63

Low Clouds (% Sky Obscured)

5
75
61
79
77
81
90
80
93
75
64
34
62
38
2
2
33
19
21
36
21
13
0
11

Medium Clouds (% Sky Obscured)

65
78
80
81
100
100
100
94
60
60
92
100
100
100
100
52
76
76
38
60
56
63
98
63

High Clouds (% Sky Obscured)

65
78
83
81
100
100
100
97
98
100
96
0
47
100
58
3
21
0
0
0
3
0
0
3

ISS Passover

Visibility (miles)

4
9
3
2
4
3
2
2
8
3
7
7
9
9
4
8
5
9
8
9
9
9
9
9

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

70
56
34
71
74
95
95
95
95
95
86
77
48
39
36
36
31
29
35
48
26
16
6
4

Precipitation Amount (mm)

0.4
0
0
0.2
0.2
1.5
3.6
1.4
1
0.9
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
65
67
69
71
78
87
90
80
81
81
84
84
81
77
70
64
58
54
54
56
62
72
77

Pressure (mb)

1008
1008
1008
1009
1009
1009
1009
1009
1010
1010
1010
1010
1010
1010
1011
1011
1012
1012
1012
1011
1012
1012
1012
1013

Ozone (du)

341
339
336
334
333
333
337
345
352
351
352
350
349
354
357
356
355
358
358
356
354
349
347
348

Saturday 22

Waxing Crescent 10%

10:17

No Set

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

Sun - Rise: 07:09, Set: 16:43, Transit: 11:56. Moon - Rise: 10:17, Set: No Set. Civil Dark: 17:13 - 06:39. Nautical Dark: 17:48 - 06:05. Astro Dark: 18:21 - 05:31

Total Clouds (% Sky Obscured)

89
90
99
30
15
4
1
0
0
0
1
0
1
0
5
3
13
15
89
52
51
59
97
92

Low Clouds (% Sky Obscured)

3
3
0
0
0
3
0
0
0
0
1
0
1
0
3
3
13
15
52
52
51
59
74
63

Medium Clouds (% Sky Obscured)

89
65
97
17
15
0
0
0
0
0
0
0
0
0
0
0
2
8
87
46
51
59
95
43

High Clouds (% Sky Obscured)

66
90
13
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
9
9
9
9
9
9
9
8
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
1
4
8
13
18
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 (%)

3
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
4
28
38
45
40
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

4
3
3
2
2
1
2
1
1
1
2
1
1
1
2
3
6
6
6
7
7
6
6
5

Dew Point (°C)

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

Relative Humidity (%)

75
73
70
71
71
70
68
67
65
67
71
72
73
74
69
57
45
38
38
40
58
68
76
78

Pressure (mb)

1013
1014
1014
1015
1016
1016
1016
1017
1017
1018
1018
1019
1019
1019
1020
1020
1020
1020
1020
1019
1018
1018
1018
1017

Ozone (du)

348
349
346
348
351
352
360
359
352
352
354
358
365
368
365
358
357
357
356
355
354
356
356
356

Sunday 23

Waxing Crescent 16%

11:01

18:48

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: 07:11, Set: 16:42, Transit: 11:56. Moon - Rise: 11:01, Set: 18:48. Civil Dark: 17:13 - 06:40. Nautical Dark: 17:47 - 06:06. Astro Dark: 18:21 - 05:32

Total Clouds (% Sky Obscured)

95
78
89
92
85
96
59
92
100
100
100
97
98
100
100
100
100
100
100
100
100
100
96
92

Low Clouds (% Sky Obscured)

36
36
69
66
65
70
27
78
71
74
81
93
92
91
89
89
89
87
95
92
90
87
86
86

Medium Clouds (% Sky Obscured)

26
28
37
37
43
38
19
29
51
45
46
44
52
74
100
100
100
100
100
100
100
100
93
88

High Clouds (% Sky Obscured)

95
0
3
92
4
0
0
39
100
100
100
71
7
8
100
100
100
100
100
100
100
100
73
47

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
8
6
4
3
2
3
3
3
4
6
3
2
3
3
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
Very Light Rain
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

Precipitation Probability (%)

10
11
21
18
23
23
18
25
40
63
73
94
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.3
0.3
0.5
0.8
1
1.3
1.1
0.9
0.7
1.3
1.4
1.9
1.8
2.1
1.9

Wind Speed/Direction (mph)

7
7
7
6
6
6
7
8
9
8
7
7
8
8
8
9
10
10
9
8
9
12
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
75
77
77
78
80
80
81
81
83
87
90
90
90
90
89
89
87
80
84
87
83
87
86

Pressure (mb)

1017
1017
1017
1018
1017
1017
1017
1016
1016
1015
1015
1014
1014
1013
1013
1013
1012
1011
1010
1009
1008
1008
1007
1007

Ozone (du)

356
353
351
347
343
339
334
331
328
324
323
323
324
326
328
326
325
323
323
325
324
322
321
321

Monday 24

Waxing Crescent 24%

11:36

19:50

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: 07:12, Set: 16:42, Transit: 11:57. Moon - Rise: 11:36, Set: 19:50. Civil Dark: 17:12 - 06:41. Nautical Dark: 17:47 - 06:07. Astro Dark: 18:20 - 05:33

Total Clouds (% Sky Obscured)

89
93
96
100
100
100
94
100
100
100
100
100
100
90
79
69
77
90
100
91
83
75
78
76

Low Clouds (% Sky Obscured)

82
85
81
83
57
60
37
44
57
35
36
54
64
69
62
50
53
61
69
69
69
67
66
63

Medium Clouds (% Sky Obscured)

85
84
89
94
90
87
70
26
39
64
48
76
95
90
79
69
68
53
40
40
35
14
41
52

High Clouds (% Sky Obscured)

26
37
59
80
81
82
81
100
100
100
100
100
100
88
77
69
77
90
100
90
83
10
78
76

ISS Passover

Visibility (miles)

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

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
Moderate Rain
Light Rain

Precipitation Probability (%)

95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

1.5
1.4
1.4
1.5
1.5
1.2
0.8
0.8
0.8
1
1.2
1.3
1.6
1.7
1.4
1.3
1
1.2
0.9
1.1
2.6
1.9
5.2
0.9

Wind Speed/Direction (mph)

7
7
7
6
7
7
7
7
7
8
9
10
10
11
12
13
17
17
18
18
16
15
12
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

86
87
89
89
87
87
84
84
86
92
90
89
89
86
85
86
92
89
89
87
92
90
93
90

Pressure (mb)

1007
1007
1006
1006
1005
1005
1004
1004
1003
1003
1002
1001
1001
1000
1000
1000
1000
1000
999
999
998
998
998
999

Ozone (du)

323
323
322
322
320
317
316
316
316
316
316
314
314
313
314
315
319
322
327
330
333
336
335
339

Tuesday 25

Waxing Crescent 34%

12:06

20:56

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: 07:13, Set: 16:41, Transit: 11:57. Moon - Rise: 12:06, Set: 20:56. Civil Dark: 17:12 - 06:42. Nautical Dark: 17:46 - 06:08. Astro Dark: 18:20 - 05:34

Total Clouds (% Sky Obscured)

74
36
63
71
68
68
66
71
75
79
83
87
91
91
85
78
80
81
83
86
88
92
95
98

Low Clouds (% Sky Obscured)

59
31
30
35
37
31
32
38
37
58
51
52
49
80
79
78
79
79
79
74
69
65
63
63

Medium Clouds (% Sky Obscured)

48
7
56
70
18
68
66
71
75
4
83
87
91
76
53
31
19
12
4
13
22
30
54
77

High Clouds (% Sky Obscured)

0
0
0
71
0
0
0
3
7
5
73
75
81
67
33
0
1
1
2
7
13
19
46
74

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

47
32
34
32
28
17
21
22
25
31
58
69
50
56
61
67
72
77
84
79
73
72
50
39

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.2
0.4
0
0.2
0.3
0.4
0.5
0.6
0.7
0.6
0.5
0.6
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

8
7
7
7
6
5
5
4
4
4
3
4
3
2
4
4
4
5
5
5
5
5
5
5

Relative Humidity (%)

69
66
66
70
66
62
60
61
59
60
57
59
58
56
57
57
57
56
55
55
56
57
59
60

Pressure (mb)

1000
1001
1001
1002
1003
1003
1003
1004
1004
1005
1005
1006
1006
1007
1005
1005
1006
1006
1006
1006
1006
1006
1006
1007

Ozone (du)

348
358
354
349
347
346
347
345
345
346
344
344
343
346
346
346
345
347
349
351
351
351
351
349

Wednesday 26

Waxing Crescent 44%

12:31

22:04

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: 07:14, Set: 16:41, Transit: 11:57. Moon - Rise: 12:31, Set: 22:04. Civil Dark: 17:12 - 06:43. Nautical Dark: 17:46 - 06:09. Astro Dark: 18:20 - 05:35

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
95
91
86
91
95
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

65
57
48
43
46
53
52
63
73
78
74
73
69
50
36
22
20
19
15
11
5
4
5
5

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
98
96
94
91
86
83
67
49
27
51
74
97
98
99
100
99
99

High Clouds (% Sky Obscured)

99
99
100
100
100
100
100
100
100
100
98
97
95
85
74
66
78
89
100
100
100
100
80
59

ISS Passover

Visibility (miles)

7
8
8
9
9
7
5
2
5
7
9
9
9
9
9
9
9
8
6
4
5
7
8
8

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

Precipitation Probability (%)

37
42
46
60
70
69
79
84
88
95
79
63
43
57
56
27
56
61
64
69
67
70
62
52

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

61
62
66
69
73
76
80
84
82
81
80
81
81
81
76
72
69
68
68
69
71
73
76
77

Pressure (mb)

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

Ozone (du)

348
347
346
346
345
346
348
349
350
350
351
349
348
346
346
345
345
346
346
346
349
351
353
353

Thursday 27

Waxing Crescent 41%

12:54

23:13

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
12 OK

Sun - Rise: 07:15, Set: 16:40, Transit: 11:58. Moon - Rise: 12:54, Set: 23:13. Civil Dark: 17:11 - 06:44. Nautical Dark: 17:46 - 06:10. Astro Dark: 18:19 - 05:36

Total Clouds (% Sky Obscured)

100
80
60
40
43
45
48
50
52
49
44
38
32
28
24
23
24
25
26

Low Clouds (% Sky Obscured)

6
5
4
3
2
1
0
0
0
0
1
2
3
4
4
5
8
12
15

Medium Clouds (% Sky Obscured)

100
79
58
36
39
42
45
42
40
37
28
19
10
10
10
10
9
8
8

High Clouds (% Sky Obscured)

38
29
16
5
15
25
35
37
39
39
28
20
13
12
9
7
6
5
5

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

45
55
49
23
46
41
6
17
19
4
11
13
3
14
9
3
23
8
5

Precipitation Amount (mm)

0
0.2
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
6
6
6
6
6
6
6
6
6
6
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
80
81
81
81
81
82
84
84
82
82
79
77
77
70
66
59
55
52

Pressure (mb)

1010
1011
1011
1012
1012
1013
1013
1013
1013
1013
1013
1014
1014
1014
1015
1015
1016
1016
1015

Ozone (du)

353
353
353
354
354
355
355
355
353
352
350
348
346
344
343
341
340
339
339

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

Generated: 21/11/25 18:31:30. Forecast: 21/11/25 to 27/11/25. Timezone: UTC+1.00