Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 26

Waxing Crescent 38%

11:51

23:43

00 Good
01 Good
02 Good
03 Good
04 Good
05 Good
06 Good
07 Good
08 Good
09 Good
10 OK
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

Sun - Rise: 08:47, Set: 16:21, Transit: 12:34. Moon - Rise: 11:51, Set: 23:43. Civil Dark: 17:03 - 08:05. Nautical Dark: 17:48 - 07:20. Astro Dark: 18:31 - 06:37

Total Clouds (% Sky Obscured)

0
0
0
0
1
1
2
3
9
5
23
14
10
12
6
4
0
0
2
3
2
2
1
0

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
9
4
23
14
10
12
4
3
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
1
1
2
3
4
5
12
5
4
5
6
4
0
0
2
2
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-19
-19
-19
-19
-19
-18
-19
-18
-18
-19
-19
-20
-18
-17
-15
-13
-13
-12
-12
-11
-11
-10
-9
-7

Relative Humidity (%)

31
32
31
32
31
32
31
32
31
30
27
25
25
27
31
35
40
43
46
48
51
55
61
67

Pressure (mb)

1034
1034
1034
1033
1033
1033
1033
1033
1033
1034
1034
1034
1034
1034
1034
1034
1034
1034
1034
1035
1035
1035
1035
1036

Ozone (du)

298
298
299
298
296
294
294
296
296
296
296
294
294
293
294
295
295
296
295
295
295
295
295
296

Saturday 27

First Quarter 49%

12:00

No Set

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

Sun - Rise: 08:48, Set: 16:22, Transit: 12:35. Moon - Rise: 12:00, Set: No Set. Civil Dark: 17:04 - 08:05. Nautical Dark: 17:49 - 07:20. Astro Dark: 18:31 - 06:38

Total Clouds (% Sky Obscured)

2
3
23
33
36
38
54
53
64
64
81
93
98
38
76
87
77
64
80
56
71
40
68
51

Low Clouds (% Sky Obscured)

0
0
23
33
36
38
54
53
56
53
66
93
98
38
76
87
45
42
52
51
53
32
68
47

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)

2
3
6
3
3
0
0
2
2
2
13
8
0
0
1
15
10
6
10
1
1
0
0
1

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

72
78
86
87
91
91
92
93
94
96
96
93
85
82
82
79
86
90
85
85
86
86
88
85

Pressure (mb)

1036
1035
1035
1035
1034
1034
1034
1034
1034
1034
1034
1034
1033
1033
1032
1032
1032
1032
1032
1032
1032
1032
1032
1032

Ozone (du)

297
297
296
294
293
293
292
292
293
294
295
294
293
294
293
293
293
292
290
289
290
291
293
290

Sunday 28

Waxing Gibbous 61%

12:11

01:06

00 OK
01 Good
02 Good
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

Sun - Rise: 08:48, Set: 16:22, Transit: 12:35. Moon - Rise: 12:11, Set: 01:06. Civil Dark: 17:05 - 08:05. Nautical Dark: 17:50 - 07:20. Astro Dark: 18:32 - 06:38

Total Clouds (% Sky Obscured)

24
7
0
1
1
1
0
1
1
1
0
0
1
2
2
2
2
1
3
6
10
14
15
16

Low Clouds (% Sky Obscured)

17
4
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
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)

1
0
0
1
1
1
0
1
1
1
0
0
1
2
2
2
2
1
3
5
9
13
11
11

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
1
42
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

1
1
1
0
-1
-1
-2
-3
-4
-5
-6
-6
-6
-5
-4
-4
-5
-6
-7
-7
-7
-8
-9
-8

Relative Humidity (%)

88
91
93
94
94
92
91
86
80
75
68
64
60
59
63
65
67
67
65
65
62
60
59
63

Pressure (mb)

1032
1033
1033
1034
1034
1034
1034
1034
1035
1035
1035
1035
1035
1034
1034
1034
1033
1033
1032
1032
1031
1031
1030
1030

Ozone (du)

288
286
285
285
284
286
285
285
285
287
286
286
285
282
280
276
275
276
276
275
275
273
275
274

Monday 29

Waxing Gibbous 72%

12:23

02:33

00 Good
01 OK
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
19 Bad
20 Bad
21 OK
22 Bad
23 Bad

Sun - Rise: 08:48, Set: 16:23, Transit: 12:36. Moon - Rise: 12:23, Set: 02:33. Civil Dark: 17:06 - 08:06. Nautical Dark: 17:51 - 07:20. Astro Dark: 18:33 - 06:38

Total Clouds (% Sky Obscured)

17
34
52
73
73
74
74
75
76
80
88
94
99
99
97
96
90
84
79
69
67
40
47
50

Low Clouds (% Sky Obscured)

5
21
37
62
68
74
74
75
76
80
88
92
96
96
93
89
82
74
67
61
56
40
47
50

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
8
17
25
24
19
12
7
3
0
0
0

High Clouds (% Sky Obscured)

10
13
17
23
16
10
4
4
4
4
7
8
5
13
23
34
22
11
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 (%)

97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97

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
5
8
12
12
15
22
15
16
7
11
8
5
5
4

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
6
5
5
5
5
6
6
6
6
6
6
7
9
10
10
9
9
9
12
12
13
13
13

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-7
-4
-2
-1
-0
1
1
2
1
2
2
3
2
2
2
2
3
2
2
2
1
-1
0
-0

Relative Humidity (%)

68
81
91
92
91
91
91
93
91
91
91
88
80
79
75
78
83
82
78
80
76
65
72
71

Pressure (mb)

1029
1029
1028
1028
1027
1027
1026
1025
1025
1025
1025
1025
1024
1024
1023
1023
1023
1023
1022
1022
1023
1023
1023
1024

Ozone (du)

277
277
278
277
277
278
280
281
283
286
284
283
282
282
285
283
282
279
280
283
287
286
284
279

Tuesday 30

Waxing Gibbous 82%

12:40

04:05

00 Bad
01 Bad
02 Bad
03 Bad
04 OK
05 OK
06 OK
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

Sun - Rise: 08:48, Set: 16:24, Transit: 12:36. Moon - Rise: 12:40, Set: 04:05. Civil Dark: 17:07 - 08:06. Nautical Dark: 17:52 - 07:21. Astro Dark: 18:34 - 06:38

Total Clouds (% Sky Obscured)

54
54
51
48
41
33
35
47
56
71
75
83
87
86
89
92
91
89
79
76
72
72
79
88

Low Clouds (% Sky Obscured)

54
54
51
48
39
32
35
47
50
52
55
58
63
59
59
60
69
65
62
62
60
63
67
71

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
9
18
26
29
30
33
31
28
26
23
18
11
5
2
1
6
20

High Clouds (% Sky Obscured)

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

97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97

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
3
3
0
0
0
1
1
14
4
18
21
25
35
34
32
32
30
27
28
26
24
28
30

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)

13
12
12
12
12
12
12
11
10
9
9
10
11
12
12
12
12
12
13
13
14
15
16
17

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
67
66
66
64
64
64
67
66
66
66
65
66
67
66
67
67
68
69
71
72
73
75
76

Pressure (mb)

1024
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1023
1023
1022
1021
1021
1020

Ozone (du)

279
280
282
282
285
294
298
305
312
319
321
322
321
323
327
330
334
334
333
333
333
332
332
333

Wednesday 31

Waxing Gibbous 91%

13:05

05:40

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
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad

Sun - Rise: 08:48, Set: 16:25, Transit: 12:37. Moon - Rise: 13:05, Set: 05:40. Civil Dark: 17:08 - 08:06. Nautical Dark: 17:52 - 07:21. Astro Dark: 18:35 - 06:38

Total Clouds (% Sky Obscured)

96
88
77
70
63
54
44
57
70
82
83
88
94
93
93
93
95
97
100
99
99
98
98
98

Low Clouds (% Sky Obscured)

76
79
74
67
53
37
21
36
50
56
59
66
73
63
55
49
56
63
67
61
56
56
57
58

Medium Clouds (% Sky Obscured)

33
38
37
33
35
32
26
30
34
33
39
39
47
55
66
77
85
92
100
98
96
95
95
95

High Clouds (% Sky Obscured)

0
0
0
1
1
1
2
2
4
8
8
5
2
24
47
71
50
25
0
24
49
73
55
35

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
5
3
3
4
4
3

Fog (%)

97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97
97

Precipitation Type

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

Precipitation Probability (%)

30
37
42
46
38
28
5
10
11
8
21
27
33
35
35
33
39
43
47
55
62
67
64
58

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.3
0.3
0.3
0.2

Wind Speed/Direction (mph)

18
19
18
16
16
13
10
8
7
5
5
7
10
13
11
10
9
9
10
10
11
11
13
13

Chance of Frost

Temperature (°C)

5
5
5
5
5
4
4
3
3
3
3
4
4
5
5
4
4
4
4
3
3
3
3
3

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
79
71
65
58
59
59
58
59
59
61
62
63
67
69
73
79
80
82
85
88
91
94
88

Pressure (mb)

1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1019
1018
1018
1017
1016
1016
1015
1014
1014
1013
1012
1011
1010

Ozone (du)

335
336
335
335
334
333
331
330
331
332
332
333
335
336
337
338
338
339
340
340
349
359
368
373

Thursday 1

Waxing Gibbous 97%

13:44

07:13

Sun - Rise: 08:47, Set: 16:27, Transit: 12:37. Moon - Rise: 13:44, Set: 07:13. Civil Dark: 17:09 - 08:05. Nautical Dark: 17:53 - 07:21. Astro Dark: 18:36 - 06:38

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 Groningen, Gemeente Groningen, Netherlands (53.22,6.57)

Generated: 26/12/25 00:38:18. Forecast: 26/12/25 to 01/01/26. Timezone: UTC+1.00