Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 6%

04:11

17:53

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

Sun - Rise: 06:55, Set: 19:13, Transit: 13:03. Moon - Rise: 04:11, Set: 17:53. Civil Dark: 19:41 - 06:27. Nautical Dark: 20:14 - 05:54. Astro Dark: 20:48 - 05:21

Total Clouds (% Sky Obscured)

15
24
38
47
30
13
37
47
64
32
44
25
8
6
6
2
20
27
33
31
32
23
33
14

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
8
14
17
13
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)

15
24
38
45
19
9
29
31
37
2
0
0
0
0
0
0
10
20
22
29
32
23
24
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)

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

Chance of Frost

Temperature (°C)

26
25
24
24
24
23
23
23
23
22
22
22
21
21
22
24
26
28
29
30
30
30
29
29

Feels Like (°C)

26
25
24
25
25
25
26
26
24
23
24
24
24
23
24
26
29
29
30
30
30
31
30
29

Dew Point (°C)

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

Relative Humidity (%)

53
57
61
63
65
67
66
66
65
65
64
64
61
60
54
47
43
40
37
36
38
40
41
43

Pressure (mb)

1022
1023
1023
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1024
1024
1025
1025
1025
1025
1025
1025
1024
1024
1024

Ozone (du)

273
273
273
272
272
272
272
273
272
271
270
270
269
269
268
268
268
267
267
267
267
267
268
269

Friday 19

Waning Crescent 2%

05:18

18:16

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

Sun - Rise: 06:56, Set: 19:12, Transit: 13:03. Moon - Rise: 05:18, Set: 18:16. Civil Dark: 19:39 - 06:28. Nautical Dark: 20:12 - 05:55. Astro Dark: 20:46 - 05:22

Total Clouds (% Sky Obscured)

3
2
19
24
8
9
11
17
18
29
30
20
11
12
2
2
1
1
3
18
13
23
38
69

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
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
2
18
13
13
30
69

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)

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

Chance of Frost

Temperature (°C)

27
26
25
24
24
24
23
23
23
23
23
22
22
22
22
24
26
28
29
30
30
30
29
29

Feels Like (°C)

29
29
28
25
25
25
25
24
24
24
23
23
23
24
24
27
29
30
31
31
30
30
29
28

Dew Point (°C)

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

Relative Humidity (%)

47
53
54
54
52
52
51
50
51
53
54
55
56
57
55
50
46
42
38
36
36
35
35
36

Pressure (mb)

1024
1024
1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1023
1023
1024
1023
1023
1023
1022
1022
1021
1021

Ozone (du)

271
271
270
270
271
271
270
271
271
271
271
271
271
272
272
273
274
274
275
275
273
272
273
272

Saturday 20

Waning Crescent 0%

06:24

18:37

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

Sun - Rise: 06:57, Set: 19:10, Transit: 13:02. Moon - Rise: 06:24, Set: 18:37. Civil Dark: 19:38 - 06:29. Nautical Dark: 20:10 - 05:56. Astro Dark: 20:44 - 05:23

Total Clouds (% Sky Obscured)

90
98
54
38
24
15
33
69
30
36
29
17
13
20
21
29
41
69
47
69
64
66
64
68

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
4

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)

90
98
39
20
13
15
33
69
30
32
12
5
13
20
17
10
26
63
47
69
64
66
64
68

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)

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

Chance of Frost

Temperature (°C)

28
26
25
25
24
23
23
23
23
22
22
22
21
21
22
24
26
27
28
28
28
28
28
27

Feels Like (°C)

28
26
25
25
25
24
25
25
25
25
23
23
23
23
24
26
26
27
27
29
28
29
28
28

Dew Point (°C)

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

Relative Humidity (%)

40
44
47
48
49
50
51
51
51
51
52
52
52
52
52
46
43
41
40
39
39
40
42
44

Pressure (mb)

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

Ozone (du)

272
273
274
275
276
276
276
276
276
276
275
276
276
277
278
279
279
278
276
275
274
274
273
274

Sunday 21

New Moon 0%

07:28

18:56

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

Sun - Rise: 06:58, Set: 19:08, Transit: 13:02. Moon - Rise: 07:28, Set: 18:56. Civil Dark: 19:36 - 06:30. Nautical Dark: 20:09 - 05:57. Astro Dark: 20:42 - 05:24

Total Clouds (% Sky Obscured)

71
70
58
65
61
59
24
16
40
40
40
46
51
46
44
55
66
62
50
22
18
17
15
13

Low Clouds (% Sky Obscured)

7
9
8
7
6
4
2
0
0
0
0
1
1
2
7
12
19
20
19
18
18
17
15
13

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)

71
70
58
61
52
44
19
10
25
25
30
40
51
46
44
55
66
62
48
2
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
1
2
1
5
4
1
2

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

Chance of Frost

Temperature (°C)

26
25
23
23
23
22
22
21
21
21
20
20
20
20
21
23
24
26
27
27
28
27
27
26

Feels Like (°C)

27
26
26
26
25
24
24
24
23
21
21
21
20
20
21
23
24
25
26
26
28
28
28
27

Dew Point (°C)

14
15
16
16
16
16
16
15
15
15
14
14
14
14
14
14
14
14
14
14
15
15
16
16

Relative Humidity (%)

48
56
62
63
65
66
67
68
68
68
68
67
66
67
64
57
51
46
45
44
44
47
50
54

Pressure (mb)

1016
1016
1016
1017
1017
1017
1016
1016
1016
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1015
1014
1014
1014

Ozone (du)

274
274
275
276
276
277
277
279
279
278
278
278
279
280
281
282
282
282
282
283
283
283
283
284

Monday 22

Waxing Crescent 3%

08:31

19:15

18 Good
19 Good
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: 06:59, Set: 19:06, Transit: 13:02. Moon - Rise: 08:31, Set: 19:15. Civil Dark: 19:34 - 06:31. Nautical Dark: 20:07 - 05:59. Astro Dark: 20:40 - 05:25

Total Clouds (% Sky Obscured)

14
15
79
90
100
100
45
49
64
57
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

14
15
26
31
37
37
39
37
46
52
52
51
42
37
22
28
29
30
29
27
36
47
58
70

Medium Clouds (% Sky Obscured)

0
0
6
12
16
18
17
16
17
14
15
10
10
10
7
11
15
39
67
94
95
95
95
97

High Clouds (% Sky Obscured)

1
3
79
90
100
100
30
44
60
45
100
100
100
100
100
100
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
8
6
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
Very Light Rain
Very Light Rain
Very Light Rain
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

4
1
2
5
1
4
7
3
20
34
42
73
90
95
14
20
20
49
66
76
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.3
0
0
0
0
0
0
0.7
1.2
1.5
2

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

25
24
24
23
23
23
22
22
22
22
22
22
22
21
22
23
24
25
25
25
25
24
23
21

Feels Like (°C)

27
26
26
24
23
24
23
25
24
23
23
22
21
21
22
22
22
22
23
23
23
24
24
22

Dew Point (°C)

17
17
17
17
17
17
16
16
16
16
16
16
16
15
15
16
16
16
16
16
15
16
18
18

Relative Humidity (%)

59
65
67
68
68
68
68
68
70
70
72
69
68
68
66
65
62
60
57
55
53
61
73
84

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1013
1012
1012
1013
1014
1014
1014
1013
1013
1013
1013
1013
1013

Ozone (du)

284
285
285
286
285
285
286
286
285
284
285
284
283
284
284
285
285
286
285
284
284
284
284
284

Tuesday 23

Waxing Crescent 7%

09:34

19:34

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: 07:00, Set: 19:05, Transit: 13:01. Moon - Rise: 09:34, Set: 19:34. Civil Dark: 19:32 - 06:32. Nautical Dark: 20:05 - 06:00. Astro Dark: 20:38 - 05:27

Total Clouds (% Sky Obscured)

100
100
100
100
100
99
99
98
96
93
90
78
69
60
52
43
33
25
18
12
20
30
38
36

Low Clouds (% Sky Obscured)

80
91
84
76
67
71
75
82
81
78
76
62
50
44
41
36
30
21
13
4
15
27
37
34

Medium Clouds (% Sky Obscured)

98
100
91
83
72
51
32
13
11
9
7
6
5
4
4
3
3
2
1
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
96
91
82
86
90
90
71
46
22
18
14
9
9
10
10
7
3
0
0

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

95
95
95
95
73
68
58
37
41
41
41
58
73
88
92
95
95
95
92
80
74
69
64
63

Precipitation Amount (mm)

2.3
2.2
2
1.3
0.2
0.2
0.2
0
0
0
0
0.3
0.5
0.8
0.8
0.8
1
0.8
0.6
0.4
0.3
0.3
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

21
21
20
21
21
21
21
21
21
21
20
20
20
20
20
21
22
23
24
25
25
25
24
24

Feels Like (°C)

22
21
21
19
19
20
21
21
21
21
21
21
21
21
20
21
22
22
22
23
23
27
26
25

Dew Point (°C)

18
18
18
18
18
18
18
18
17
17
17
18
18
18
17
18
18
19
19
19
19
19
18
18

Relative Humidity (%)

85
86
86
86
85
85
84
82
80
81
82
85
85
85
84
81
79
77
72
69
66
68
69
71

Pressure (mb)

1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016

Ozone (du)

284
285
285
286
286
287
288
288
289
290
291
292
292
292
293
293
293
293
293
293
294
294
295
295

Wednesday 24

Waxing Crescent 13%

10:38

19:55

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

Sun - Rise: 07:01, Set: 19:03, Transit: 13:01. Moon - Rise: 10:38, Set: 19:55. Civil Dark: 19:31 - 06:33. Nautical Dark: 20:03 - 06:01. Astro Dark: 20:36 - 05:28

Total Clouds (% Sky Obscured)

34
32
38
44
50
56
61
67
43
21
7
11
16
20
17
9
6
6
5
5

Low Clouds (% Sky Obscured)

32
29
19
10
0
0
0
0
0
0
0
2
3
1
1
1
2
1
1
0

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

0
0
15
33
49
55
61
67
43
21
3
6
9
12
10
7
4
6
5
5

ISS Passover

Visibility (miles)

6
8
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

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

Precipitation Probability (%)

59
43
35
25
5
4
3
1
1
0
0
0
0
0
1
2
1
5
6
5

Precipitation Amount (mm)

0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

23
22
21
21
21
20
20
19
19
18
18
18
18
18
18
20
21
23
23
23

Feels Like (°C)

24
24
24
22
22
23
22
21
21
20
20
20
20
20
20
21
22
22
23
23

Dew Point (°C)

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

Relative Humidity (%)

70
67
66
67
69
70
71
72
73
73
75
74
74
74
74
66
59
53
49
47

Pressure (mb)

1017
1017
1017
1018
1018
1018
1018
1018
1019
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

294
293
292
292
292
292
293
293
294
293
292
292
291
291
291
291
291
292
291
291

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

Generated: 18/09/25 17:51:33. Forecast: 18/09/25 to 24/09/25. Timezone: UTC+2.00