Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 21

Waxing Crescent 6%

No Rise

No Set

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
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:35. Moon - Rise: No Rise, Set: No Set. Civil Dark: 14:57 - 10:13. Nautical Dark: 16:36 - 08:35. Astro Dark: 17:51 - 07:19

Total Clouds (% Sky Obscured)

88
92
94
95
100
100
100
100
99
85
82
95
95
97
95
87
96
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

88
92
94
95
99
99
98
98
97
80
77
88
87
84
83
85
88
90
89
89
83
85
86
83

Medium Clouds (% Sky Obscured)

88
90
89
88
85
60
56
42
2
2
2
0
0
0
0
0
2
10
3
24
60
64
57
64

High Clouds (% Sky Obscured)

4
6
8
4
2
0
0
0
0
0
4
0
0
0
0
2
6
54
74
89
100
92
96
99

ISS Passover

Visibility (miles)

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

Fog (%)

0
1
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
Snow
Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
0
0
78
78
75
64
50
30
23
19
16
7
9
14
19
4
7
2
1
0
0
3
13

Precipitation Amount (mm)

0
0
0
0.6
0.6
0.5
0.4
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
7
5
6
3
3
3
3
2
2
2
2
2
2
2
3
3
3
4
3
4
3
3
3

Chance of Frost

Temperature (°C)

-3
-3
-3
-4
-5
-5
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-6
-7
-7
-7
-7
-8
-8
-8

Feels Like (°C)

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

Dew Point (°C)

-3
-4
-4
-5
-5
-5
-5
-6
-6
-6
-7
-7
-7
-7
-7
-7
-7
-8
-8
-8
-8
-8
-9
-9

Relative Humidity (%)

96
96
98
96
96
96
96
94
94
94
94
94
94
92
92
92
92
92
92
94
92
94
94
94

Pressure (mb)

1017
1018
1019
1020
1021
1022
1022
1023
1023
1024
1025
1025
1026
1026
1027
1027
1028
1028
1028
1028
1028
1028
1029
1028

Ozone (du)

323
319
312
306
304
307
316
319
324
331
334
335
334
325
321
323
321
312
303
296
291
288
285
283

Monday 22

Waxing Crescent 11%

14:18

16:49

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
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:36. Moon - Rise: 14:18, Set: 16:49. Civil Dark: 14:58 - 10:14. Nautical Dark: 16:36 - 08:35. Astro Dark: 17:52 - 07:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
99
98
98
95
100
97
97
97
98
98
98
98
98
97
96
95
90

Low Clouds (% Sky Obscured)

78
83
83
80
73
47
46
51
65
40
39
48
70
67
79
83
84
91
93
95
93
88
90
80

Medium Clouds (% Sky Obscured)

62
84
85
97
100
97
85
67
35
43
26
17
14
2
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

94
72
76
75
76
75
75
74
80
80
60
80
80
75
75
70
77
50
70
80
83
73
82
85

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
1
1
1
1
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
10
10
11
12
7
9
2
2
0
1
1
0
0
0
1
2
1
2
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
4
4
5
6
8
10
13
15
14
14
12
11
11
10
9
9
8
7
7
7

Chance of Frost

Temperature (°C)

-8
-9
-9
-9
-8
-8
-8
-7
-6
-4
-3
-2
-1
-1
-1
-1
-1
-1
-1
-1
-2
-2
-3
-3

Feels Like (°C)

-11
-12
-12
-12
-12
-12
-11
-10
-10
-8
-7
-6
-5
-5
-5
-5
-5
-5
-6
-5
-6
-6
-7
-8

Dew Point (°C)

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

Relative Humidity (%)

92
92
90
88
90
92
92
92
94
92
94
92
94
94
94
94
94
94
94
94
94
92
91
91

Pressure (mb)

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

Ozone (du)

283
284
283
280
280
280
281
283
282
280
278
276
276
276
280
284
288
286
285
289
295
292
288
292

Tuesday 23

Waxing Crescent 19%

13:13

No Set

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
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:36. Moon - Rise: 13:13, Set: No Set. Civil Dark: 14:59 - 10:14. Nautical Dark: 16:37 - 08:36. Astro Dark: 17:53 - 07:20

Total Clouds (% Sky Obscured)

95
87
85
80
80
80
80
74
75
88
100
100
100
91
100
100
100
99
95
85
60
62
75
87

Low Clouds (% Sky Obscured)

74
39
44
31
54
55
48
40
57
68
65
71
66
73
54
66
57
90
89
85
44
18
18
19

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
23
65
65
100
70
100
100
100
93
2
0
0
2
39
67

High Clouds (% Sky Obscured)

87
85
85
80
80
80
76
71
38
43
18
17
19
65
100
100
100
95
48
0
49
62
75
87

ISS Passover

Visibility (miles)

9
9
1
1
0
0
0
0
0
0
0
0
0
1
1
7
7
5
6
5
7
9
9
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
None
None
None
None
None
Snow
None
None
Snow
None
None
None
None
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
1
6
9
5
11
24
50
22
31
57
45
39
24
30
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0.1
0
0
0
0
0.1

Wind Speed/Direction (mph)

6
5
5
4
4
3
3
3
3
3
3
2
2
2
2
2
4
8
12
17
20
21
20
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-8
-8
-8
-8
-8
-9
-9
-9
-10
-10
-10
-9
-8
-9
-9
-9
-7
-5
-4
-7
-8
-8
-8

Dew Point (°C)

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

Relative Humidity (%)

91
91
92
94
96
96
96
96
96
96
94
92
94
94
90
89
87
86
86
91
84
75
74
79

Pressure (mb)

1026
1027
1027
1027
1027
1027
1026
1026
1026
1026
1026
1025
1025
1024
1023
1022
1021
1020
1019
1018
1018
1018
1018
1017

Ozone (du)

299
302
296
292
289
289
286
284
283
290
291
293
288
287
283
280
279
279
288
291
293
297
295
280

Wednesday 24

Waxing Crescent 28%

12:41

19:31

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
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:37. Moon - Rise: 12:41, Set: 19:31. Civil Dark: 15:00 - 10:14. Nautical Dark: 16:38 - 08:36. Astro Dark: 17:54 - 07:20

Total Clouds (% Sky Obscured)

100
88
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
97
96
95
96
97

Low Clouds (% Sky Obscured)

49
54
74
89
88
87
88
90
95
100
98
95
91
89
86
83
82
81
83
86
89
93
94
96

Medium Clouds (% Sky Obscured)

53
33
50
84
86
100
89
79
79
75
84
83
68
74
99
99
82
82
100
61
94
90
87
50

High Clouds (% Sky Obscured)

100
23
100
100
100
100
100
100
100
100
37
15
46
98
88
95
82
80
95
95
95
95
72
10

ISS Passover

Visibility (miles)

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

Snow
Snow
Snow
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Moderate Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

50
67
80
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0.1
0.3
0.4
0.5
0.8
1.1
1.2
1.8
2.4
2.8
4.1
3.9
3.2
3.7
2.8
2.3
2.9
2.2
2
2.5
2.6
2.3
1.8
0.8

Wind Speed/Direction (mph)

16
15
17
20
24
23
22
22
21
20
19
19
19
18
16
16
15
16
16
16
17
17
18
21

Chance of Frost

Temperature (°C)

-1
-1
-1
1
1
2
2
2
2
2
2
1
1
1
1
1
1
1
1
2
2
2
2
2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
86
91
94
94
94
94
93
93
93
94
96
96
98
98
98
98
98
100
98
98
98
98
93

Pressure (mb)

1015
1014
1012
1011
1010
1009
1008
1007
1006
1005
1004
1003
1003
1002
1003
1003
1003
1004
1004
1005
1005
1006
1007
1007

Ozone (du)

284
276
266
269
271
270
270
265
265
267
271
273
276
277
275
272
271
272
273
272
271
267
262
259

Thursday 25

Waxing Crescent 38%

12:16

21:37

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 OK
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:37. Moon - Rise: 12:16, Set: 21:37. Civil Dark: 15:01 - 10:13. Nautical Dark: 16:39 - 08:36. Astro Dark: 17:55 - 07:20

Total Clouds (% Sky Obscured)

96
95
94
70
97
97
97
91
98
98
97
99
86
60
39
20
32
44
57
69
83
97
100
100

Low Clouds (% Sky Obscured)

96
94
92
67
94
91
91
88
93
94
96
98
86
59
35
17
25
41
53
67
80
92
95
98

Medium Clouds (% Sky Obscured)

34
26
19
11
13
13
15
10
5
0
0
0
0
13
8
3
2
1
0
0
0
0
5
8

High Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1

ISS Passover

Visibility (miles)

7
0
0
7
6
8
0
0
0
9
8
9
4
9
8
7
5
4
3
2
4
7
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

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

Precipitation Probability (%)

76
82
78
61
68
58
76
93
61
28
45
42
14
40
37
19
39
39
29
52
69
82
89
75

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

25
28
30
31
32
32
32
34
31
29
25
24
23
21
16
14
12
13
14
16
18
22
27
23

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-9
-9
-10
-9
-9
-10
-10
-9
-8
-7
-7
-7
-7
-8
-7
-5
-6
-7
-8
-5
-5
-4
-5

Dew Point (°C)

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

Relative Humidity (%)

91
96
93
88
88
89
93
93
96
83
80
80
86
82
83
84
89
89
91
93
93
93
93
91

Pressure (mb)

1008
1008
1009
1009
1010
1011
1011
1012
1013
1013
1014
1014
1014
1014
1015
1015
1015
1014
1013
1013
1013
1013
1012
1012

Ozone (du)

255
253
247
245
243
243
243
242
247
245
244
248
250
252
254
255
257
256
256
255
258
261
264
266

Friday 26

Waxing Crescent 49%

11:54

23:36

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
18 Bad

Sun - Rise: N/A, Set: N/A, Transit: 12:38. Moon - Rise: 11:54, Set: 23:36. Civil Dark: 15:03 - 10:13. Nautical Dark: 16:40 - 08:36. Astro Dark: 17:56 - 07:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100
99
99
81
63

Low Clouds (% Sky Obscured)

98
98
98
99
99
99
97
83
69
55
67
79
93
95
96
98
97
95
95
66
41
23
28
29

Medium Clouds (% Sky Obscured)

13
22
31
40
36
31
25
37
50
69
82
97
99
94
89
84
89
90
91
93
95
95
75
56

High Clouds (% Sky Obscured)

1
10
19
29
48
68
87
92
96
100
100
100
100
70
40
10
38
66
95
75
56
36
24
13

ISS Passover

Visibility (miles)

9
9
6
3
0
2
4
5
5
5
5
3
2
1
1
2
2
5
7
9
9
9
9
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
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
None
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

32
57
52
42
58
61
57
66
60
48
60
62
54
54
56
56
68
75
80
75
68
58
54
51

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

20
18
17
17
18
20
20
20
20
20
19
18
18
17
19
20
22
21
22
25
22
20
18
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-2
-3
-3
-2
-2
-2
-2
-2
-3
-3
-3
-4
-3
-4
-4
-4
-4
-6
-8
-9
-9
-9
-8
-9

Relative Humidity (%)

89
87
89
91
92
92
94
92
92
94
94
94
98
98
98
96
96
85
77
72
73
77
82
83

Pressure (mb)

1012
1012
1012
1011
1011
1010
1009
1008
1008
1008
1007
1007
1006
1006
1005
1005
1004
1004
1004
1003
1003
1003
1002
1002

Ozone (du)

267
269
269
269
270
269
269
269
270
271
272
279
285
291
299
307
315
330
345
360
368
376
385
389

Saturday 27

First Quarter 46%

11:29

01:37

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

Sun - Rise: N/A, Set: N/A, Transit: 12:38. Moon - Rise: 11:29, Set: 01:37. Civil Dark: 15:04 - 10:12. Nautical Dark: 16:41 - 08:35. Astro Dark: 17:57 - 07:20

Total Clouds (% Sky Obscured)

44
43
42
41
33
25
17
17
17
16
36
55
74
83
91
99
98
98
96

Low Clouds (% Sky Obscured)

25
37
40
41
33
25
17
15
14
16
31
39
47
51
58
62
58
56
52

Medium Clouds (% Sky Obscured)

36
26
15
5
6
7
7
8
11
13
30
42
46
46
40
41
30
28
19

High Clouds (% Sky Obscured)

1
1
0
0
0
0
0
2
3
4
5
6
7
15
22
32
25
17
9

ISS Passover

Visibility (miles)

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

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
Snow
None
Snow
Snow
None

Precipitation Probability (%)

48
55
59
62
61
59
54
57
60
58
55
54
53
55
52
44
50
46
30

Precipitation Amount (mm)

0.1
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0
0.1
0.1
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-8
-9
-7
-7
-6
-6
-5
-4
-4
-4
-3
-3
-3
-3
-3
-3
-3
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-10
-10
-9
-8
-8
-8
-8
-7
-6
-5
-5
-4
-4
-4
-4
-4
-4
-4
-4

Relative Humidity (%)

85
87
87
89
89
87
84
82
84
87
87
91
91
94
94
94
92
92
92

Pressure (mb)

1002
1002
1002
1002
1002
1002
1002
1002
1003
1003
1003
1004
1005
1006
1006
1007
1008
1009
1009

Ozone (du)

393
397
397
397
397
392
387
382
377
372
367
359
350
341
337
333
329
333
336

Forecast for Kilpisjärvi, Tunturi-Lappi, Finland (69.07,20.76)

Generated: 21/12/25 19:56:15. Forecast: 21/12/25 to 27/12/25. Timezone: UTC+2.00