Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 18

Waning Crescent 3%

No Rise

12:51

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 09:24, Set: 15:14, Transit: 12:19. Moon - Rise: No Rise, Set: 12:51. Civil Dark: 16:12 - 08:26. Nautical Dark: 17:09 - 07:29. Astro Dark: 18:01 - 06:37

Total Clouds (% Sky Obscured)

70
76
96
100
90
97
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

70
76
95
87
80
76
70
90
100
100
100
100
100
94
94
98
98
100
95
91
88
95
100
100

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
25
100
63
38
29
39
51
45
53
70
75
85
85
94
100

High Clouds (% Sky Obscured)

20
35
48
100
61
87
100
100
100
100
100
100
87
89
100
100
100
62
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
2
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

39
0
1
0
0
0
0
0
0
37
9
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
1
4
2
5
6
13
5
6
5
1
0
0
0
5
48

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
0
1
1
0
0
0
-1
-0
1
1
1
1
1
1
0
1
2
2
2
2
1
2
1

Dew Point (°C)

1
1
1
2
2
2
2
2
2
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4

Relative Humidity (%)

94
94
94
93
91
93
91
91
91
96
94
93
94
94
88
88
90
90
90
91
93
94
93
93

Pressure (mb)

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

Ozone (du)

251
248
249
250
255
259
257
254
253
256
255
254
258
257
258
254
260
261
256
256
257
255
253
256

Friday 19

Waning Crescent 1%

10:16

13:13

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 09:24, Set: 15:14, Transit: 12:19. Moon - Rise: 10:16, Set: 13:13. Civil Dark: 16:12 - 08:27. Nautical Dark: 17:09 - 07:30. Astro Dark: 18:01 - 06:38

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
62
67
78

Low Clouds (% Sky Obscured)

96
93
100
100
100
99
100
98
94
100
100
99
100
100
90
82
70
78
69
30
44
57
53
66

Medium Clouds (% Sky Obscured)

100
100
100
100
96
72
89
100
98
100
98
96
94
91
100
100
88
100
100
87
100
35
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
98
100
100
100
100
100
100
66
67
89
64
61
58
100
100
25
20
20

ISS Passover

Visibility (miles)

9
9
0
9
9
9
9
9
9
9
9
9
7
6
5
4
5
0
0
0
7
9
9
9

Fog (%)

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

Precipitation Type

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

Precipitation Probability (%)

63
66
39
27
22
32
52
65
64
67
63
69
62
59
67
70
53
39
17
1
0
0
0
0

Precipitation Amount (mm)

0.2
0.3
0
0
0
0
0.2
0.4
0.4
0.4
0.3
0.4
0.3
0.3
0.3
0.4
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
94
96
93
91
90
90
93
93
93
93
94
93
93
94
96
96
96
96
96
94
88
88
91

Pressure (mb)

1014
1013
1013
1012
1012
1011
1011
1011
1010
1010
1009
1009
1009
1008
1008
1008
1007
1007
1007
1007
1007
1006
1006
1006

Ozone (du)

254
252
252
249
252
258
273
275
275
280
283
288
296
297
291
295
298
305
314
325
324
319
327
324

Saturday 20

New Moon 0%

11:12

14:06

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 09:25, Set: 15:15, Transit: 12:20. Moon - Rise: 11:12, Set: 14:06. Civil Dark: 16:13 - 08:27. Nautical Dark: 17:10 - 07:30. Astro Dark: 18:02 - 06:38

Total Clouds (% Sky Obscured)

74
83
98
94
100
91
90
99
97
100
89
79
85
100
89
84
58
69
80
91
93
94
96
95

Low Clouds (% Sky Obscured)

74
83
95
87
82
86
88
99
90
100
86
78
82
95
89
84
58
63
68
73
77
82
86
83

Medium Clouds (% Sky Obscured)

0
15
26
18
60
2
0
0
15
2
0
0
0
0
0
0
0
21
41
58
59
56
56
57

High Clouds (% Sky Obscured)

1
0
0
0
15
15
21
9
43
7
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
2
7
10
5
10
6
5
5
2
0
0
0
0
0
0
0
0
0
0
2
3
3
5

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
2
2
1
2
1
1
2
1
1
1
2
2
2
2
2
1
1
1
0
0
-0
-0
0

Dew Point (°C)

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

Relative Humidity (%)

89
89
86
76
78
78
78
79
82
83
83
86
88
88
89
91
91
91
91
91
91
91
91
93

Pressure (mb)

1006
1006
1006
1006
1006
1006
1006
1006
1007
1007
1007
1007
1008
1008
1009
1009
1010
1010
1010
1010
1011
1011
1011
1011

Ozone (du)

313
294
283
285
277
278
274
278
280
281
279
286
278
274
274
271
273
270
276
281
281
285
288
285

Sunday 21

Waxing Crescent 2%

11:36

15:31

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
03 Bad
04 Bad
05 Bad
06 Bad
07 OK
08 OK

Sun - Rise: 09:26, Set: 15:15, Transit: 12:20. Moon - Rise: 11:36, Set: 15:31. Civil Dark: 16:13 - 08:28. Nautical Dark: 17:10 - 07:31. Astro Dark: 18:02 - 06:39

Total Clouds (% Sky Obscured)

95
94
96
98
100
96
92
89
88
83
83
87
87
91
91
91
91
92
100
92
68
53
35
36

Low Clouds (% Sky Obscured)

80
78
85
93
100
96
92
84
84
83
83
82
82
90
90
86
76
72
76
76
54
28
1
9

Medium Clouds (% Sky Obscured)

62
63
54
38
26
17
8
0
0
0
0
11
21
32
22
11
2
1
3
0
2
19
35
36

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
20
3
3
5
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
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
2
9
11
13
10
7
0
0
0
0
4
7
7
10
10
11
12
13
13
10
8
3
3

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)

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

Chance of Frost

Temperature (°C)

2
2
2
2
2
2
2
1
1
1
1
0
0
0
-0
-0
-0
-0
-1
-1
-1
-1
-2
-2

Feels Like (°C)

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

Dew Point (°C)

1
1
1
1
1
1
1
1
1
0
-1
-1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-2
-3
-4

Relative Humidity (%)

91
91
91
91
89
91
94
94
96
94
92
94
94
94
96
96
96
94
94
92
94
94
91
89

Pressure (mb)

1012
1013
1013
1014
1014
1015
1015
1016
1016
1017
1017
1018
1019
1019
1020
1020
1021
1021
1022
1022
1023
1023
1024
1024

Ozone (du)

282
281
278
287
301
313
316
318
320
321
323
324
327
331
333
333
330
330
329
327
327
326
325
325

Monday 22

Waxing Crescent 6%

11:44

17:08

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
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 09:26, Set: 15:16, Transit: 12:21. Moon - Rise: 11:44, Set: 17:08. Civil Dark: 16:14 - 08:28. Nautical Dark: 17:11 - 07:31. Astro Dark: 18:03 - 06:39

Total Clouds (% Sky Obscured)

43
57
67
77
95
93
92
91
88
86
86
7
5
9
34
72
85
89
89
86
79
77
70
57

Low Clouds (% Sky Obscured)

17
24
47
73
94
93
92
90
87
84
80
7
5
9
34
55
70
71
68
72
72
73
70
57

Medium Clouds (% Sky Obscured)

40
40
40
40
35
35
35
35
30
25
25
7
5
9
34
66
61
57
46
39
42
31
28
24

High Clouds (% Sky Obscured)

5
10
10
15
15
10
5
5
5
5
5
5
5
5
5
0
0
5
5
5
15
5
5
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
1
0
0
0
0
0
0
0
0
0
0
0
0
3
6
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 (%)

2
0
0
0
0
2
5
4
16
22
22
27
29
30
31
32
32
31
29
25
25
22
19
16

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
92
91
91
91
92
92
96
96
98
96
98
96
96
96
96
96
94
94
92
85
78
72

Pressure (mb)

1025
1026
1026
1026
1026
1027
1027
1027
1028
1028
1029
1029
1027
1028
1028
1029
1029
1029
1030
1030
1031
1031
1032
1032

Ozone (du)

326
326
327
329
338
344
349
351
354
355
355
354
354
354
354
349
344
339
334
328
323
324
325
326

Tuesday 23

Waxing Crescent 11%

11:47

18:45

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

Sun - Rise: 09:26, Set: 15:16, Transit: 12:21. Moon - Rise: 11:47, Set: 18:45. Civil Dark: 16:14 - 08:29. Nautical Dark: 17:12 - 07:31. Astro Dark: 18:03 - 06:40

Total Clouds (% Sky Obscured)

41
29
32
42
55
55
51
44
42
32
21
18
14
9
9
9
8
9
9
13
15
20
19
17

Low Clouds (% Sky Obscured)

41
29
32
42
53
38
22
7
11
17
21
18
14
9
9
9
4
4
4
4
5
7
9
8

Medium Clouds (% Sky Obscured)

15
10
10
10
5
9
7
9
17
12
3
5
4
4
4
5
5
8
9
10
8
6
4
2

High Clouds (% Sky Obscured)

0
0
0
0
2
2
2
0
1
1
2
2
2
2
2
1
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 (%)

12
3
6
5
2
4
3
1
2
2
1
1
1
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)

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

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-3
-3
-4
-5
-6
-6
-6
-6
-6
-6
-6
-6
-6
-5
-5
-5
-5
-5
-5
-5

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
69
68
68
66
66
65
64
62
61
60
58
58
58
58
60
60
60
61
61
61
61
62
62

Pressure (mb)

1033
1034
1034
1035
1035
1035
1036
1036
1037
1037
1037
1038
1038
1038
1039
1039
1039
1039
1039
1039
1040
1040
1040
1040

Ozone (du)

334
341
348
349
351
352
348
345
341
334
327
320
320
321
321
321
320
320
312
304
295
300
306
311

Wednesday 24

Waxing Crescent 19%

11:48

20:20

09 Good
10 Good
11 Good
12 Good
13 Good
14 OK
15 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 OK
22 OK
23 OK
00 OK
01 OK

Sun - Rise: 09:27, Set: 15:17, Transit: 12:22. Moon - Rise: 11:48, Set: 20:20. Civil Dark: 16:15 - 08:29. Nautical Dark: 17:12 - 07:32. Astro Dark: 18:04 - 06:40

Total Clouds (% Sky Obscured)

11
2
5
8
12
24
36
50
56
64
69
55
43
30
35
41
46

Low Clouds (% Sky Obscured)

7
2
5
8
12
21
31
39
46
45
37
30
23
16
18
21
24

Medium Clouds (% Sky Obscured)

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
6
13
19
13
6
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

Fog (%)

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

Precipitation Probability (%)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-5
-5
-5
-5
-4
-4
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-6

Feels Like (°C)

-8
-8
-8
-8
-8
-8
-7
-7
-8
-7
-7
-8
-8
-8
-8
-8
-8

Dew Point (°C)

-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-11
-10
-10
-10
-10
-10
-9

Relative Humidity (%)

62
62
62
61
60
58
60
62
63
65
67
70
71
71
73
74
76

Pressure (mb)

1040
1040
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041
1041

Ozone (du)

315
319
324
325
327
329
332
336
339
339
338
337
329
321
314
309
305

Forecast for Vols, Helsinki, Finland (60.17,24.39)

Generated: 18/12/25 09:28:55. Forecast: 18/12/25 to 24/12/25. Timezone: UTC+2.00