Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Crescent 34%

02:18

12:55

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

Sun - Rise: 07:19, Set: 16:45, Transit: 12:02. Moon - Rise: 02:18, Set: 12:55. Civil Dark: 17:15 - 06:50. Nautical Dark: 17:48 - 06:16. Astro Dark: 18:21 - 05:43

Total Clouds (% Sky Obscured)

85
88
91
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98

Low Clouds (% Sky Obscured)

21
29
32
24
8
7
18
72
74
80
86
24
88
85
96
98
98
100
100
100
100
100
78
80

Medium Clouds (% Sky Obscured)

24
61
91
82
94
95
92
100
89
100
100
100
97
100
100
100
100
100
100
100
100
100
100
98

High Clouds (% Sky Obscured)

66
88
91
100
98
100
88
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
55

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
4
4
0
0
0
0
0
0
7
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
Light Rain
Light Rain
Snow
Snow
Snow
Snow
Snow
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
6
3
2
7
8
18
26
37
57
75
93
95
95
95
91
47
15

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.4
0.6
0.9
1.4
1.4
1
0.4
0
0

Wind Speed/Direction (mph)

3
2
3
6
6
6
5
5
4
3
2
2
3
4
4
4
3
4
6
7
8
10
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

84
86
79
71
66
63
61
61
62
69
74
76
79
83
93
96
96
98
98
96
98
94
84
75

Pressure (mb)

1021
1021
1021
1021
1020
1019
1018
1017
1017
1017
1018
1018
1018
1018
1017
1017
1017
1017
1016
1016
1016
1017
1017
1018

Ozone (du)

328
322
318
317
315
312
311
308
308
309
307
308
310
312
312
312
312
313
310
308
307
307
310
312

Sunday 14

Waning Crescent 25%

03:19

13:17

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

Sun - Rise: 07:20, Set: 16:45, Transit: 12:02. Moon - Rise: 03:19, Set: 13:17. Civil Dark: 17:15 - 06:50. Nautical Dark: 17:49 - 06:17. Astro Dark: 18:21 - 05:44

Total Clouds (% Sky Obscured)

67
56
40
41
40
42
44
40
41
20
15
0
3
52
7
20
28
0
0
0
0
81
80
52

Low Clouds (% Sky Obscured)

67
56
25
26
28
30
34
33
41
20
15
0
1
8
7
20
28
0
0
0
0
1
4
1

Medium Clouds (% Sky Obscured)

67
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
5
21
33

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
81
67
14

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 (%)

4
0
0
0
0
0
0
0
0
0
0
0
3
12
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)

13
13
14
15
16
16
17
17
18
17
17
17
16
17
17
16
14
13
12
11
12
10
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-10
-11
-10
-10
-11
-11
-12
-13
-14
-14
-14
-14
-15
-16
-15
-15
-14
-13
-13
-13
-13
-13
-14

Dew Point (°C)

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

Relative Humidity (%)

78
76
75
70
68
64
62
61
58
59
62
63
64
64
61
63
63
65
67
68
69
71
77
77

Pressure (mb)

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

Ozone (du)

317
328
337
342
351
361
369
367
363
360
358
360
360
359
364
369
372
358
339
330
329
327
320
316

Monday 15

Waning Crescent 17%

04:20

13:41

07 Good
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 OK
23 OK
00 OK
01 OK
02 OK
03 Good
04 OK
05 Bad
06 Bad

Sun - Rise: 07:21, Set: 16:45, Transit: 12:03. Moon - Rise: 04:20, Set: 13:41. Civil Dark: 17:15 - 06:51. Nautical Dark: 17:49 - 06:17. Astro Dark: 18:21 - 05:45

Total Clouds (% Sky Obscured)

2
99
67
98
97
90
100
100
100
100
100
95
91
73
26
18
12
12
29
30
15
38
70
100

Low Clouds (% Sky Obscured)

1
1
1
1
0
0
25
25
25
31
45
45
37
35
3
12
11
10
2
1
0
0
0
0

Medium Clouds (% Sky Obscured)

0
2
44
77
97
80
100
63
93
100
90
92
91
73
17
3
0
0
0
0
0
12
35
52

High Clouds (% Sky Obscured)

2
98
40
97
35
75
100
95
75
85
90
54
0
0
0
0
0
0
16
20
15
38
70
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
2
8
4
4
4
8
9
9
7
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
1
18
12
17
18
19
15
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
9
11
13
13
13
12
10
9
9
6
4
3
5
5
5
4
3
3
3
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

75
75
73
67
64
60
58
63
75
82
87
87
89
89
89
92
92
90
89
85
80
79
79
77

Pressure (mb)

1029
1030
1030
1030
1029
1028
1027
1026
1026
1026
1025
1025
1024
1023
1023
1022
1022
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

307
299
292
285
284
283
284
287
287
287
289
290
290
290
290
292
296
298
299
297
295
291
291
287

Tuesday 16

Waning Crescent 11%

05:22

14:09

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

Sun - Rise: 07:21, Set: 16:45, Transit: 12:03. Moon - Rise: 05:22, Set: 14:09. Civil Dark: 17:15 - 06:52. Nautical Dark: 17:49 - 06:18. Astro Dark: 18:22 - 05:45

Total Clouds (% Sky Obscured)

100
100
93
79
87
86
83
84
80
93
57
83
76
65
56
51
51
46
39
33
44
46
46
51

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
23
35
23
12
0

Medium Clouds (% Sky Obscured)

58
61
65
56
48
29
48
64
80
71
57
52
54
30
8
0
0
0
1
2
2
17
28
33

High Clouds (% Sky Obscured)

100
100
93
79
79
58
55
56
67
80
27
70
71
65
56
51
51
46
39
12
11
7
4
29

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

76
75
68
61
56
54
51
49
55
64
71
72
70
74
74
76
76
76
78
79
79
79
79
79

Pressure (mb)

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

Ozone (du)

287
285
287
288
285
284
282
280
279
274
274
272
272
271
270
268
267
268
267
266
265
266
268
269

Wednesday 17

Waning Crescent 6%

06:23

14:42

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

Sun - Rise: 07:22, Set: 16:46, Transit: 12:04. Moon - Rise: 06:23, Set: 14:42. Civil Dark: 17:16 - 06:52. Nautical Dark: 17:50 - 06:19. Astro Dark: 18:22 - 05:46

Total Clouds (% Sky Obscured)

57
60
46
61
58
45
40
44
45
52
68
88
59
31
2
2
4
10
16
22
23
40
67
90

Low Clouds (% Sky Obscured)

0
0
2
2
4
6
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

32
29
30
41
36
22
23
27
30
52
68
88
59
31
0
1
1
2
3
4
4
22
29
37

High Clouds (% Sky Obscured)

57
60
18
60
58
45
40
44
5
21
56
72
49
27
2
2
4
10
16
22
23
40
60
63

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
77
71
68
68
67
70
74
78
81
86
88
86
86
89
89
89
88
88
88
89
89
89
91

Pressure (mb)

1019
1018
1018
1018
1017
1016
1015
1016
1016
1016
1017
1018
1019
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021
1021

Ozone (du)

268
269
270
271
272
275
281
285
294
297
297
298
298
298
297
297
294
291
289
287
285
283
283
283

Thursday 18

Waning Crescent 2%

No Rise

15:22

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

Sun - Rise: 07:22, Set: 16:46, Transit: 12:04. Moon - Rise: No Rise, Set: 15:22. Civil Dark: 17:16 - 06:53. Nautical Dark: 17:50 - 06:19. Astro Dark: 18:23 - 05:46

Total Clouds (% Sky Obscured)

91
94
95
96
96
93
88
81
76
83
91
100
100
100
100
100
100
100
98
96
94
95
97
99

Low Clouds (% Sky Obscured)

0
0
0
13
32
51
59
66
71
59
45
44
56
68
79
81
82
83
85
86
87
70
52
34

Medium Clouds (% Sky Obscured)

40
41
34
32
46
58
45
33
14
36
67
100
92
84
76
80
81
78
75
72
70
80
89
97

High Clouds (% Sky Obscured)

54
54
59
61
60
67
56
49
43
64
80
95
97
100
100
100
100
100
98
96
94
68
42
35

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
7
8
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
Very Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
3
6
7
8
9
5
9
12
13
27
30
32
39
42
41
54
67
81
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.8
1.2
1.5

Wind Speed/Direction (mph)

3
4
5
6
7
8
9
10
10
10
10
10
10
11
13
14
14
15
15
15
15
15
13
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
89
88
86
88
90
91
93
91
93
93
93
93
91
93
91
90
90
90
90
90
91
76
61

Pressure (mb)

1022
1022
1022
1022
1020
1019
1018
1017
1017
1016
1015
1015
1014
1013
1012
1011
1010
1009
1008
1007
1007
1006
1008
1009

Ozone (du)

282
282
282
281
282
283
284
284
284
285
285
284
284
285
286
287
288
289
290
291
292
293
295
296

Friday 19

New Moon 0%

07:21

16:10

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

Sun - Rise: 07:23, Set: 16:47, Transit: 12:05. Moon - Rise: 07:21, Set: 16:10. Civil Dark: 17:17 - 06:53. Nautical Dark: 17:50 - 06:20. Astro Dark: 18:23 - 05:47

Total Clouds (% Sky Obscured)

98
96
95
95
95
90
66
33
7
23
41
60
41
22
5
10
12
13

Low Clouds (% Sky Obscured)

22
11
0
0
0
0
0
0
0
21
41
60
41
21
0
0
0
0

Medium Clouds (% Sky Obscured)

95
84
75
67
68
75
58
33
7
16
10
1
5
10
5
10
10
6

High Clouds (% Sky Obscured)

20
14
14
5
0
0
0
0
0
0
0
2
4
5
1
3
4
6

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

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

Precipitation Probability (%)

95
66
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.8
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
16
17
18
18
17
17
16
16
15
14
13
13
12
11
12
11
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

8
5
5
3
3
2
1
3
3
2
2
2
1
-2
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

50
47
42
39
35
32
29
30
33
34
38
43
48
51
53
56
54
55

Pressure (mb)

1010
1012
1014
1015
1016
1016
1016
1017
1019
1020
1021
1023
1024
1025
1026
1027
1028
1028

Ozone (du)

298
299
300
300
301
302
303
302
301
300
299
298
297
296
296
295
294
293

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

Generated: 13/12/25 06:59:05. Forecast: 13/12/25 to 19/12/25. Timezone: UTC-5.00