Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 25

Waxing Crescent 30%

11:21

22:29

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

Sun - Rise: 07:26, Set: 16:50, Transit: 12:08. Moon - Rise: 11:21, Set: 22:29. Civil Dark: 17:20 - 06:56. Nautical Dark: 17:54 - 06:22. Astro Dark: 18:26 - 05:49

Total Clouds (% Sky Obscured)

92
92
85
71
38
19
34
1
5
6
17
23
42
86
87
95
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
19
3
0
0
0
0
0
3
0
0
0
0
0
2
0
0
0
0
0
0
19
85
100

Medium Clouds (% Sky Obscured)

0
0
0
0
12
1
0
0
0
3
7
7
25
27
87
93
89
99
100
100
100
98
100
100

High Clouds (% Sky Obscured)

77
92
68
71
27
18
26
1
2
2
5
9
2
31
39
84
100
100
100
100
100
100
35
49

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
3
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
Frozen rai

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
17
6
0
31
61

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
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
12
12
11
10
8
7
5
4
2
1
-0
-1
-1
-2
-3
-3
-3
-4
-3
-3
-2
-2
-1

Feels Like (°C)

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

Dew Point (°C)

6
6
7
5
3
1
0
-2
-2
-4
-5
-6
-8
-9
-10
-12
-13
-13
-15
-16
-16
-17
-17
-17

Relative Humidity (%)

73
70
71
67
63
60
63
61
67
68
65
63
60
57
55
48
47
45
40
38
35
31
28
30

Pressure (mb)

1013
1013
1014
1015
1016
1018
1020
1021
1022
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1024
1024
1023
1021

Ozone (du)

300
303
303
302
302
303
300
300
298
296
295
291
288
284
279
278
279
280
280
280
282
281
279
280

Friday 26

Waxing Crescent 41%

11:44

23:35

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
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:26, Set: 16:51, Transit: 12:09. Moon - Rise: 11:44, Set: 23:35. Civil Dark: 17:21 - 06:56. Nautical Dark: 17:54 - 06:22. Astro Dark: 18:27 - 05:50

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
98
100
99
96
96
94
100
94
94
100
100
100
100
100
100
100
100
94

Low Clouds (% Sky Obscured)

100
100
94
100
94
97
93
99
99
87
88
74
100
86
86
100
100
100
100
100
100
100
100
94

Medium Clouds (% Sky Obscured)

100
23
96
86
81
100
44
38
34
32
29
44
2
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

36
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
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
1
0
0
0
0
0
0
0
0
0

Precipitation Type

Frozen rai
Frozen rai
None
Snow
Frozen rai
Frozen rai
Frozen rai
Frozen rai
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

60
67
28
56
93
87
95
89
52
19
5
4
27
14
1
0
0
1
3
0
0
1
1
1

Precipitation Amount (mm)

0.2
0.5
0
0.2
0.9
0.4
0.6
0.5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
8
9
11
11
11
10
8
6
5
5
4
2
3
4
5
5
6
6
6
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-16
-15
-13
-13
-11
-8
-7
-5
-3
-2
-2
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1

Relative Humidity (%)

33
37
42
46
51
61
64
72
80
84
87
91
91
92
92
92
91
92
94
92
89
84
81
79

Pressure (mb)

1020
1018
1017
1016
1015
1014
1013
1013
1013
1012
1011
1010
1010
1011
1011
1012
1013
1014
1016
1017
1018
1019
1019
1019

Ozone (du)

278
278
281
283
283
286
289
293
298
300
300
299
297
295
295
296
297
297
297
298
300
302
303
303

Saturday 27

First Quarter 52%

12:09

00:44

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
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:26, Set: 16:51, Transit: 12:09. Moon - Rise: 12:09, Set: 00:44. Civil Dark: 17:21 - 06:56. Nautical Dark: 17:55 - 06:23. Astro Dark: 18:28 - 05:50

Total Clouds (% Sky Obscured)

94
94
92
87
82
75
66
63
65
83
82
88
80
78
74
99
100
100
99
98
96
97
98
100

Low Clouds (% Sky Obscured)

91
92
88
86
79
71
61
58
62
58
51
45
43
43
42
38
33
22
33
51
77
81
77
73

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
19
24
43
37
50
41
84
100
99
96
92
85
90
94
100

High Clouds (% Sky Obscured)

0
7
31
2
19
9
6
10
5
11
4
6
16
19
23
89
100
100
81
62
42
54
67
83

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 (%)

2
2
2
1
2
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
74
77
83
89
91
91
91
89
92
92
92
92
92
92
92
92
92
92
92
87
83
76
73

Pressure (mb)

1019
1019
1020
1021
1022
1023
1023
1023
1024
1024
1024
1024
1024
1025
1024
1024
1024
1024
1024
1024
1024
1024
1023
1022

Ozone (du)

303
302
300
299
298
297
295
294
295
294
293
290
287
285
286
285
285
285
287
289
289
290
289
289

Sunday 28

Waxing Gibbous 63%

12:37

01:56

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
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 07:27, Set: 16:52, Transit: 12:10. Moon - Rise: 12:37, Set: 01:56. Civil Dark: 17:22 - 06:57. Nautical Dark: 17:56 - 06:23. Astro Dark: 18:28 - 05:50

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
95
100
100
100
100
100
100
100
100
100
100
100
100
88
77
67

Low Clouds (% Sky Obscured)

72
70
69
67
65
63
75
88
95
93
82
72
74
72
70
77
82
86
75
63
52
55
58
61

Medium Clouds (% Sky Obscured)

100
100
100
100
100
98
86
77
60
69
76
92
95
96
98
97
95
96
88
67
63
52
39
35

High Clouds (% Sky Obscured)

88
94
100
100
100
98
85
100
61
100
100
100
100
100
100
100
100
100
100
100
100
85
73
64

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

Precipitation Probability (%)

5
7
7
27
35
38
32
24
6
9
14
15
13
7
0
27
43
53
64
63
58
45
29
11

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

3
3
3
3
3
3
3
4
4
5
5
6
6
7
7
8
9
9
10
11
12
13
12
12

Feels Like (°C)

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

Dew Point (°C)

-2
-2
-1
0
1
1
1
1
2
3
4
4
5
6
6
7
8
8
9
9
10
10
10
9

Relative Humidity (%)

72
70
77
80
83
85
86
85
83
88
91
90
93
93
93
93
93
91
91
90
87
83
86
77

Pressure (mb)

1021
1020
1019
1019
1018
1017
1016
1015
1014
1012
1011
1009
1008
1006
1005
1003
1002
1001
999
999
999
999
999
998

Ozone (du)

287
286
285
285
283
283
282
279
279
277
276
277
275
274
272
270
270
269
270
269
267
268
269
270

Monday 29

Waxing Gibbous 74%

No Rise

03:12

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

Sun - Rise: 07:27, Set: 16:53, Transit: 12:10. Moon - Rise: No Rise, Set: 03:12. Civil Dark: 17:23 - 06:57. Nautical Dark: 17:56 - 06:23. Astro Dark: 18:29 - 05:51

Total Clouds (% Sky Obscured)

68
72
74
73
66
37
23
20
43
25
37
39
31
34
35
26
17
8
12
18
24
17
12
6

Low Clouds (% Sky Obscured)

59
57
57
42
30
20
21
20
28
25
36
39
23
23
22
18
14
8
10
13
21
16
11
6

Medium Clouds (% Sky Obscured)

37
38
40
38
27
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

68
70
65
65
65
25
10
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
3
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

26
89
42
18
1
0
0
0
0
0
0
0
0
0
0
2
1
0
1
0
0
0
0
0

Precipitation Amount (mm)

0
0.8
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)

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

Chance of Frost

Temperature (°C)

12
10
8
6
5
4
2
1
1
0
-0
-1
-1
-1
-2
-2
-3
-3
-4
-3
-3
-2
-1
-1

Feels Like (°C)

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

Dew Point (°C)

8
7
5
2
0
-2
-4
-5
-6
-6
-6
-7
-8
-8
-9
-10
-10
-11
-12
-12
-12
-12
-13
-13

Relative Humidity (%)

77
80
81
74
68
67
65
64
64
63
63
62
60
58
57
56
56
55
53
50
48
45
41
37

Pressure (mb)

998
999
1001
1002
1003
1004
1006
1006
1007
1007
1007
1008
1008
1009
1009
1010
1011
1012
1013
1014
1015
1016
1016
1015

Ozone (du)

269
271
272
276
282
288
296
302
313
323
323
321
323
324
325
326
332
337
342
341
341
341
339
337

Tuesday 30

Waxing Gibbous 84%

13:12

04:30

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

Sun - Rise: 07:27, Set: 16:54, Transit: 12:11. Moon - Rise: 13:12, Set: 04:30. Civil Dark: 17:24 - 06:57. Nautical Dark: 17:57 - 06:23. Astro Dark: 18:30 - 05:51

Total Clouds (% Sky Obscured)

4
2
0
0
0
0
33
67
100
82
64
48
37
31
34
64
83
89
75
56
37
27
16
5

Low Clouds (% Sky Obscured)

4
2
0
0
0
0
0
0
0
0
0
0
0
0
3
2
8
23
24
14
4
3
1
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
24
40
50
50
56
48
37
31
34
64
83
89
75
54
33
27
16
5

High Clouds (% Sky Obscured)

0
0
0
0
0
0
15
30
45
30
17
30
6
7
2
2
1
0
0
0
1
27
16
5

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
8
7
8
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
1
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)

16
15
14
13
11
10
9
8
7
7
7
7
7
7
6
6
6
5
5
6
7
9
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

34
34
36
37
41
45
51
52
54
56
55
53
52
51
52
52
54
57
58
52
46
41
39
37

Pressure (mb)

1015
1015
1016
1016
1016
1017
1018
1018
1018
1018
1018
1018
1018
1018
1018
1017
1018
1018
1018
1018
1018
1018
1018
1017

Ozone (du)

335
337
339
340
336
332
328
331
335
338
335
332
329
330
331
331
329
328
326
322
319
316
314
312

Wednesday 31

Waxing Gibbous 92%

13:55

05:48

13 OK
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
19 OK
20 OK
21 OK
22 OK
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:27, Set: 16:54, Transit: 12:11. Moon - Rise: 13:55, Set: 05:48. Civil Dark: 17:24 - 06:57. Nautical Dark: 17:58 - 06:24. Astro Dark: 18:30 - 05:51

Total Clouds (% Sky Obscured)

30
53
72
58
51
44
45
43
40
45
72
90
96
99
100
100
100
100

Low Clouds (% Sky Obscured)

13
29
52
58
51
44
45
30
12
31
51
60
43
46
55
55
52
53

Medium Clouds (% Sky Obscured)

29
42
56
37
21
5
4
2
0
20
33
60
57
63
74
82
91
100

High Clouds (% Sky Obscured)

30
53
72
58
29
8
13
25
40
43
40
15
12
14
11
4
2
0

ISS Passover

Visibility (miles)

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

Precipitation Type

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
3
3
1
2
3
4
6
7
8

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-9
-8
-7
-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-6
-5
-5
-5

Relative Humidity (%)

36
39
42
46
50
55
60
61
61
62
61
61
60
61
61
63
64
64

Pressure (mb)

1016
1016
1015
1015
1016
1016
1017
1017
1017
1018
1018
1018
1018
1018
1018
1019
1019
1020

Ozone (du)

310
310
311
311
310
308
307
307
308
309
306
304
301
300
298
297
298
299

Forecast for Marriottsville, Howard, United States of America (39.35,-76.90)

Generated: 25/12/25 13:57:00. Forecast: 25/12/25 to 31/12/25. Timezone: UTC-5.00