Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 20

Waxing Crescent 3%

08:57

18:06

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

Sun - Rise: 07:24, Set: 16:48, Transit: 12:06. Moon - Rise: 08:57, Set: 18:06. Civil Dark: 17:18 - 06:54. Nautical Dark: 17:51 - 06:20. Astro Dark: 18:24 - 05:47

Total Clouds (% Sky Obscured)

46
21
2
16
12
4
5
24
86
61
62
100
100
100
100
100
100
100
100
100
93
59
55
0

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
3
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

4
0
0
0
0
0
0
4
12
0
0
31
70
75
70
93
0
0
44
8
0
13
0
0

High Clouds (% Sky Obscured)

1
0
1
9
8
3
3
13
74
61
62
100
100
100
100
100
100
100
100
100
89
47
35
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)

5
6
10
10
10
9
9
7
6
6
6
6
6
7
9
12
14
16
15
15
15
14
12
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
64
66
66
65
62
61
65
69
67
63
65
69
72
63
52
49
48
47
46
47
48
52
54

Pressure (mb)

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

Ozone (du)

277
277
278
278
280
279
278
277
277
276
276
278
277
276
277
282
283
286
289
293
299
304
312
320

Sunday 21

Waxing Crescent 7%

09:35

No Set

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

Sun - Rise: 07:24, Set: 16:48, Transit: 12:06. Moon - Rise: 09:35, Set: No Set. Civil Dark: 17:18 - 06:54. Nautical Dark: 17:52 - 06:21. Astro Dark: 18:25 - 05:48

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
9
19
57
76
47
57
51
73
54

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
5
15
10

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
9
13
36
29
39
55
45
73
54

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
6
11
52
9
11
6
2
20

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
2

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
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
18
34

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
0.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
56
60
62
63
62
61
63
64
62
60
59
56
54
44
37
33
31
33
35
36
42
43
44

Pressure (mb)

1030
1030
1031
1032
1033
1033
1034
1034
1035
1035
1035
1035
1036
1036
1036
1036
1036
1034
1033
1033
1032
1032
1032
1032

Ozone (du)

320
315
310
311
314
318
318
317
316
313
315
314
313
313
313
309
308
306
304
303
301
294
291
288

Monday 22

Waxing Crescent 13%

10:07

19:11

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: 07:25, Set: 16:49, Transit: 12:07. Moon - Rise: 10:07, Set: 19:11. Civil Dark: 17:19 - 06:55. Nautical Dark: 17:53 - 06:21. Astro Dark: 18:25 - 05:48

Total Clouds (% Sky Obscured)

87
93
87
100
100
100
95
100
97
100
100
96
100
100
100
100
100
100
97
94
89
88
87
87

Low Clouds (% Sky Obscured)

9
1
0
10
10
15
25
44
25
73
91
92
100
100
100
80
87
93
93
91
88
87
86
86

Medium Clouds (% Sky Obscured)

87
93
87
79
68
88
92
100
96
98
99
95
81
44
32
23
10
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

30
30
39
100
100
100
70
41
56
100
60
10
51
95
98
89
96
100
65
34
2
15
7
4

ISS Passover

Visibility (miles)

9
9
9
9
2
5
8
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
Snow
None
None
None
Frozen rai
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
1
2
22
31
59
33
32
55
94
86
42
39
33
3
1
0
0
0
0
0
1
1
3

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

55
54
50
48
49
51
69
59
57
61
65
70
78
81
85
85
83
82
81
85
85
88
91
93

Pressure (mb)

1032
1031
1030
1029
1028
1027
1026
1026
1024
1023
1021
1021
1020
1020
1019
1019
1018
1016
1015
1015
1015
1014
1015
1015

Ozone (du)

288
288
286
286
286
284
285
287
286
288
284
283
283
285
286
286
289
290
291
292
292
291
292
292

Tuesday 23

Waxing Crescent 21%

10:34

20:17

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

Sun - Rise: 07:25, Set: 16:49, Transit: 12:07. Moon - Rise: 10:34, Set: 20:17. Civil Dark: 17:19 - 06:55. Nautical Dark: 17:53 - 06:21. Astro Dark: 18:26 - 05:49

Total Clouds (% Sky Obscured)

77
66
42
54
52
51
37
31
33
23
51
53
24
29
30
24
18
6
4
3
15
10
8
9

Low Clouds (% Sky Obscured)

73
60
42
47
47
47
37
31
29
23
28
26
24
28
28
19
10
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
1
9

High Clouds (% Sky Obscured)

5
2
1
1
15
32
2
2
17
2
51
52
9
10
10
9
8
5
4
3
15
10
8
9

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
9
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

93
96
90
81
75
78
78
75
73
72
69
71
72
70
66
62
58
56
53
53
54
62
67
68

Pressure (mb)

1015
1015
1016
1016
1016
1017
1018
1019
1020
1021
1022
1023
1024
1026
1027
1028
1028
1027
1027
1027
1028
1028
1028
1029

Ozone (du)

294
296
297
298
299
298
297
296
295
295
293
292
293
291
289
290
288
282
281
280
278
277
277
275

Wednesday 24

Waxing Crescent 30%

10:58

21:23

19 OK
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: 07:26, Set: 16:50, Transit: 12:08. Moon - Rise: 10:58, Set: 21:23. Civil Dark: 17:20 - 06:55. Nautical Dark: 17:54 - 06:22. Astro Dark: 18:26 - 05:49

Total Clouds (% Sky Obscured)

43
70
91
94
94
94
95
98
100
99
99
98
98
98
98
98
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
3
5
8
30
53
75
81
87
93
95
98
100
100
100
100
86
72
58

Medium Clouds (% Sky Obscured)

37
70
90
91
91
92
70
51
28
49
70
90
89
87
87
83
79
75
70
65
59
74
83
88

High Clouds (% Sky Obscured)

43
70
69
69
69
73
76
87
100
85
42
55
57
58
60
52
50
51
64
58
60
70
83
97

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
7
2
2
2
3
5
7
9
8
7
6
7
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
None
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
Very Light Rain
Very Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
7
61
95
95
95
95
95
81
57
48
44
46
53
53
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
1.5
1.2
1.1
0.8
0.7
0.4
0.2
0
0
0
0.3
0.3
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

69
69
70
73
74
77
77
77
78
76
76
76
88
89
89
91
89
88
86
88
91
93
93
93

Pressure (mb)

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

Ozone (du)

273
272
271
272
272
272
273
274
274
273
274
273
270
269
268
266
266
265
264
264
264
264
264
265

Thursday 25

Waxing Crescent 41%

11:21

22:29

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: 07:26, Set: 16:51, Transit: 12:08. Moon - Rise: 11:21, Set: 22:29. Civil Dark: 17:21 - 06:56. Nautical Dark: 17:54 - 06:22. Astro Dark: 18:27 - 05:49

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
99
100
100
100
99
98
97
96
95
94
95
94
97
89
79
70

Low Clouds (% Sky Obscured)

54
50
47
63
79
87
84
80
77
80
87
88
85
81
78
79
80
81
81
80
80
65
50
33

Medium Clouds (% Sky Obscured)

79
69
56
66
84
99
96
91
90
87
83
77
79
81
86
93
95
94
88
80
73
51
29
6

High Clouds (% Sky Obscured)

97
98
97
98
100
100
91
83
74
84
92
100
77
50
25
17
8
0
0
0
0
9
12
24

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
Very Light Rain
Very Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

40
31
25
26
26
24
19
15
11
13
13
8
13
14
11
31
38
44
48
54
61
53
38
6

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
0.2
0
0

Wind Speed/Direction (mph)

3
3
3
4
4
4
4
4
4
5
5
6
6
5
5
6
8
9
10
9
9
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

0
2
2
2
2
3
3
5
5
5
6
7
7
9
9
9
9
9
10
12
12
12
12
12

Dew Point (°C)

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

Relative Humidity (%)

93
93
91
91
93
94
96
96
96
96
95
95
93
92
90
90
90
90
89
89
87
86
81
78

Pressure (mb)

1017
1016
1016
1015
1014
1013
1013
1012
1011
1010
1010
1009
1008
1007
1007
1007
1005
1004
1003
1003
1004
1004
1005
1007

Ozone (du)

265
265
264
264
264
263
263
262
261
261
261
262
263
263
262
262
262
263
263
266
269
272
279
286

Friday 26

Waxing Crescent 52%

11:44

23:35

19 Bad
20 OK
21 OK
22 OK
23 OK
00 OK
01 OK
02 Good
03 Good
04 Good
05 Good
06 Good
07 OK
08 OK
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: 17:55 - 06:22. Astro Dark: 18:28 - 05:50

Total Clouds (% Sky Obscured)

51
33
15
20
24
28
22
13
2
7
12
18
27
37
50
68
83
95

Low Clouds (% Sky Obscured)

32
32
15
20
24
19
14
8
0
0
0
0
14
28
42
53
64
56

Medium Clouds (% Sky Obscured)

5
3
1
1
0
0
0
0
0
0
0
0
20
37
50
68
83
95

High Clouds (% Sky Obscured)

9
4
1
1
0
0
0
0
0
6
12
18
11
8
10
13
13
16

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 (%)

6
5
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

13
4
4
4
3
4
4
-1
-1
-1
-0
-1
-2
-2
-2
-2
-2
-2

Dew Point (°C)

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

Relative Humidity (%)

75
74
73
71
71
73
75
75
74
74
76
74
74
68
61
54
49
45

Pressure (mb)

1008
1009
1010
1011
1012
1014
1015
1016
1017
1018
1019
1020
1021
1021
1022
1023
1023
1022

Ozone (du)

293
298
303
307
312
317
322
325
329
332
334
335
337
339
342
344
343
342

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

Generated: 20/12/25 18:26:58. Forecast: 20/12/25 to 26/12/25. Timezone: UTC-5.00