Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 86%

15:58

04:09

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

Sun - Rise: 06:11, Set: 20:04, Transit: 13:07. Moon - Rise: 15:58, Set: 04:09. Civil Dark: 20:34 - 05:41. Nautical Dark: 21:10 - 05:04. Astro Dark: 21:50 - 04:24

Total Clouds (% Sky Obscured)

18
29
37
45
79
59
51
69
17
33
88
93
86
97
98
87
24
29
28
30
25
11
11
0

Low Clouds (% Sky Obscured)

18
29
37
45
32
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium 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

High Clouds (% Sky Obscured)

0
0
0
4
21
42
51
69
8
8
88
93
86
97
98
87
7
0
4
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 (%)

12
10
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
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)

3
3
3
3
2
1
1
3
4
5
7
9
10
9
9
8
6
4
2
2
3
3
3
3

Chance of Frost

Temperature (°C)

12
12
12
12
12
14
16
18
20
22
23
23
22
22
21
20
18
17
16
15
15
14
14
13

Feels Like (°C)

13
13
13
13
13
13
16
19
20
21
21
20
20
20
18
17
17
16
16
15
14
14
14
13

Dew Point (°C)

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

Relative Humidity (%)

79
79
77
76
72
64
56
47
41
36
36
37
39
39
40
47
56
68
74
75
75
74
74
74

Pressure (mb)

1020
1020
1020
1019
1020
1020
1020
1020
1020
1020
1019
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017

Ozone (du)

382
379
381
383
386
386
384
382
382
383
383
383
382
382
383
381
378
374
371
369
367
364
363
359

Tuesday 28

Waxing Gibbous 92%

17:04

04:29

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

Sun - Rise: 06:09, Set: 20:05, Transit: 13:07. Moon - Rise: 17:04, Set: 04:29. Civil Dark: 20:35 - 05:39. Nautical Dark: 21:12 - 05:02. Astro Dark: 21:52 - 04:22

Total Clouds (% Sky Obscured)

0
0
6
8
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0

Low Clouds (% Sky Obscured)

0
0
4
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium 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

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
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
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)

3
3
3
3
3
2
1
2
4
7
8
8
8
8
8
6
5
3
2
2
3
3
2
2

Chance of Frost

Temperature (°C)

12
12
12
11
12
14
17
19
21
22
23
23
23
23
22
21
19
17
16
15
14
14
13
13

Feels Like (°C)

14
12
12
12
12
15
18
20
21
21
21
22
22
21
21
21
19
17
17
17
15
15
14
14

Dew Point (°C)

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

Relative Humidity (%)

73
73
72
72
68
57
47
39
35
33
32
33
32
32
34
38
44
53
58
59
58
59
59
59

Pressure (mb)

1017
1017
1017
1017
1017
1017
1017
1017
1017
1016
1016
1016
1016
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

359
359
360
361
361
362
363
364
364
364
362
360
358
355
354
353
352
350
350
350
349
348
348
348

Wednesday 29

Waxing Gibbous 97%

18:08

04:48

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

Sun - Rise: 06:08, Set: 20:06, Transit: 13:07. Moon - Rise: 18:08, Set: 04:48. Civil Dark: 20:36 - 05:38. Nautical Dark: 21:13 - 05:01. Astro Dark: 21:53 - 04:21

Total Clouds (% Sky Obscured)

2
2
18
11
20
43
25
27
69
44
5
0
4
3
0
42
29
29
31
40
52
57
46
62

Low 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

Medium Clouds (% Sky Obscured)

0
0
2
0
0
8
17
0
0
0
0
0
0
0
0
7
16
19
16
18
23
22
24
45

High Clouds (% Sky Obscured)

0
0
17
11
20
43
5
27
69
44
5
0
4
3
0
42
11
7
4
1
0
0
1
4

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
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)

3
3
4
4
3
2
1
1
2
4
7
9
9
8
7
7
5
3
2
2
3
3
3
4

Chance of Frost

Temperature (°C)

12
12
12
11
12
14
17
20
22
23
24
24
23
23
23
22
20
18
17
17
16
16
15
15

Feels Like (°C)

13
12
11
12
12
15
18
21
22
23
23
22
22
22
22
21
20
18
18
17
16
14
14
14

Dew Point (°C)

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

Relative Humidity (%)

60
61
62
64
62
53
45
35
28
25
25
28
29
29
30
34
41
46
50
49
49
50
50
49

Pressure (mb)

1015
1016
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016

Ozone (du)

347
346
346
346
346
346
348
348
348
348
347
346
347
346
345
347
347
348
348
347
346
345
344
343

Thursday 30

Waxing Gibbous 99%

19:13

05:09

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
00 Bad
01 Bad
02 Bad

Sun - Rise: 06:06, Set: 20:07, Transit: 13:07. Moon - Rise: 19:13, Set: 05:09. Civil Dark: 20:37 - 05:36. Nautical Dark: 21:14 - 04:59. Astro Dark: 21:55 - 04:19

Total Clouds (% Sky Obscured)

84
90
92
80
82
92
94
98
100
82
97
96
100
100
99
100
99
70
57
63
59
54
78
60

Low Clouds (% Sky Obscured)

0
3
5
20
33
46
51
52
53
22
3
3
0
26
31
23
27
2
2
1
7
14
23
35

Medium Clouds (% Sky Obscured)

23
25
32
34
33
38
45
46
33
38
51
77
99
100
98
100
99
63
57
57
53
44
32
28

High Clouds (% Sky Obscured)

20
20
39
43
54
75
69
89
96
61
94
82
86
96
34
35
37
44
29
42
41
32
67
19

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
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
Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
2
2
2
12
15
13
26
25
20
38
46
52
42
22
17
15
13
3
4

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.2
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
14
14
14
16
18
20
21
22
23
23
23
22
22
21
19
17
17
16
16
15
15
15

Feels Like (°C)

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

Dew Point (°C)

4
5
5
6
6
6
6
6
6
6
6
7
8
9
10
11
13
15
15
14
13
13
13
12

Relative Humidity (%)

50
53
56
58
58
51
45
39
37
35
34
34
38
41
45
51
68
83
87
85
83
85
85
86

Pressure (mb)

1016
1016
1016
1017
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1017
1018
1018
1018
1019
1019
1019
1019
1020
1020

Ozone (du)

342
342
342
342
342
341
341
343
345
346
347
346
346
346
344
343
344
345
348
354
359
361
362
364

Friday 1

Full Moon 100%

20:18

05:32

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

Sun - Rise: 06:05, Set: 20:08, Transit: 13:07. Moon - Rise: 20:18, Set: 05:32. Civil Dark: 20:39 - 05:35. Nautical Dark: 21:16 - 04:57. Astro Dark: 21:56 - 04:17

Total Clouds (% Sky Obscured)

60
67
85
94
96
41
40
40
39
38
37
28
14
0
6
13
19
27
39
49
58
63
68
74

Low Clouds (% Sky Obscured)

43
54
62
65
69
41
40
40
38
25
16
11
5
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

28
24
26
23
20
20
15
15
7
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

15
20
20
25
34
23
11
2
13
28
37
28
14
0
1
3
10
22
39
49
58
63
68
74

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 (%)

8
7
7
7
2
3
3
1
1
1
0
0
0
0
4
1
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)

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

Chance of Frost

Temperature (°C)

14
14
14
13
14
14
16
18
20
21
21
22
21
21
20
19
18
16
16
15
14
14
13
13

Feels Like (°C)

16
15
14
13
12
13
16
18
20
20
20
21
20
20
20
20
19
19
14
15
16
15
14
14

Dew Point (°C)

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

Relative Humidity (%)

86
87
89
86
82
71
60
49
43
40
37
37
42
48
55
61
67
74
77
79
80
82
82
81

Pressure (mb)

1020
1020
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021
1020
1020
1020
1020
1021
1021
1021
1022
1022
1022
1022
1022

Ozone (du)

369
370
370
371
372
370
367
365
364
365
365
366
366
365
365
364
364
364
364
365
365
366
366
367

Saturday 2

Waning Gibbous 98%

21:23

05:58

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

Sun - Rise: 06:04, Set: 20:09, Transit: 13:07. Moon - Rise: 21:23, Set: 05:58. Civil Dark: 20:40 - 05:33. Nautical Dark: 21:17 - 04:56. Astro Dark: 21:58 - 04:15

Total Clouds (% Sky Obscured)

79
80
75
70
60
46
37
20
21
21
19
26
32
39
30
20
11
13
17
15
11
8
4
1

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
5
10
15
22
29
35
24
12
3
2
1
0
4
5
4
1

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
5
5
8
7
5
2
1
1

High Clouds (% Sky Obscured)

79
80
75
70
60
46
37
20
18
9
0
0
0
1
2
3
4
3
3
2
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 (%)

0
0
0
0
0
0
0
0
4
5
1
9
8
2
5
3
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)

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

Chance of Frost

Temperature (°C)

12
12
11
12
12
13
15
17
19
20
20
21
20
20
20
19
18
17
16
15
14
13
13
12

Feels Like (°C)

12
12
12
12
11
12
14
16
17
18
19
20
21
20
19
18
19
19
15
16
16
16
15
16

Dew Point (°C)

10
10
9
10
9
9
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
10
10

Relative Humidity (%)

84
86
87
84
79
76
68
60
54
52
51
51
51
51
52
57
63
69
73
76
80
83
83
86

Pressure (mb)

1022
1022
1022
1022
1022
1023
1023
1023
1023
1023
1022
1022
1022
1022
1021
1021
1021
1022
1022
1022
1022
1022
1022
1022

Ozone (du)

367
367
368
369
370
371
373
375
376
376
375
375
376
377
378
378
378
378
378
379
379
377
376
375

Sunday 3

Waning Gibbous 95%

22:25

06:29

Sun - Rise: 06:02, Set: 20:10, Transit: 13:06. Moon - Rise: 22:25, Set: 06:29. Civil Dark: 20:41 - 05:32. Nautical Dark: 21:19 - 04:54. Astro Dark: 22:00 - 04:13

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: 27/04/26 03:46:55. Forecast: 27/04/26 to 03/05/26. Timezone: UTC+2.00