Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 16%

08:14

00:18

08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 OK
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

Sun - Rise: 06:20, Set: 19:50, Transit: 13:06. Moon - Rise: 08:14, Set: 00:18. Civil Dark: 20:18 - 05:52. Nautical Dark: 20:52 - 05:18. Astro Dark: 21:28 - 04:42

Total Clouds (% Sky Obscured)

92
80
85
81
56
62
54
56
64
55
26
8
0
0
0
4
8
5
5
0
0
0
0
0

Low Clouds (% Sky Obscured)

39
29
52
37
56
62
54
56
60
49
3
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

4
1
0
0
0
5
7
10
64
12
10
4
0
0
0
0
4
3
2
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
4
2
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
7
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
2
0
22
12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
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)

4
8
9
11
13
14
14
14
14
14
12
11
7
5
4
4
5
4
4
4
4
3
3
3

Chance of Frost

Temperature (°C)

8
8
8
9
11
12
12
12
12
11
10
9
8
6
5
4
3
3
2
2
1
1
0
-1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

70
73
70
56
46
36
31
30
31
32
37
41
47
52
52
50
52
57
60
63
64
65
66
62

Pressure (mb)

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

Ozone (du)

406
404
400
402
407
414
419
416
414
413
414
405
394
391
389
389
391
393
394
396
392
384
383
383

Tuesday 21

Waxing Crescent 26%

09:15

01:20

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

Sun - Rise: 06:19, Set: 19:51, Transit: 13:06. Moon - Rise: 09:15, Set: 01:20. Civil Dark: 20:19 - 05:50. Nautical Dark: 20:53 - 05:16. Astro Dark: 21:29 - 04:40

Total Clouds (% Sky Obscured)

0
2
4
5
4
24
50
46
9
23
35
53
62
64
72
45
65
92
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
2
0
0
0
14
25
15
10

Medium Clouds (% Sky Obscured)

0
0
0
0
0
13
50
46
7
18
33
48
59
55
72
45
64
92
100
100
88
100
100
100

High Clouds (% Sky Obscured)

0
2
2
4
2
3
0
0
0
0
0
0
1
14
22
3
28
76
58
100
100
100
100
100

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
1
2
0
0
0
0
0
0
4
23

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)

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

Chance of Frost

Temperature (°C)

2
6
8
10
11
13
14
14
15
15
15
14
12
11
10
9
9
8
9
8
9
9
9
10

Feels Like (°C)

1
6
7
8
9
11
12
11
12
13
13
12
8
7
6
5
6
5
5
4
5
5
6
6

Dew Point (°C)

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

Relative Humidity (%)

51
45
40
34
32
31
31
30
31
32
37
45
46
51
53
52
54
56
54
55
57
58
59
62

Pressure (mb)

1031
1031
1030
1029
1028
1027
1026
1025
1024
1023
1022
1022
1022
1023
1023
1022
1021
1020
1019
1019
1018
1017
1017
1017

Ozone (du)

382
381
377
379
378
377
376
375
372
371
371
372
368
369
369
369
366
366
365
363
362
360
362
364

Wednesday 22

Waxing Crescent 37%

10:25

02:10

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

Sun - Rise: 06:17, Set: 19:52, Transit: 13:05. Moon - Rise: 10:25, Set: 02:10. Civil Dark: 20:21 - 05:49. Nautical Dark: 20:55 - 05:15. Astro Dark: 21:31 - 04:38

Total Clouds (% Sky Obscured)

100
100
100
87
99
80
83
67
61
36
16
51
44
35
18
16
17
22
15
9
1
5
7
10

Low Clouds (% Sky Obscured)

15
59
88
75
98
67
76
56
59
36
16
28
26
28
16
15
17
22
15
8
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
74
64
54
69
30
39
25
0
0
6
27
18
7
5
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
30
30
2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
5
7
10

ISS Passover

Visibility (miles)

9
9
5
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

56
95
79
19
5
4
2
11
6
19
17
3
2
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
1.5
0.4
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
5
5
6
8
6
6
8
9
9
8
6
5
5
5
4
4
3
4
4
4
4
4
4

Chance of Frost

Temperature (°C)

10
11
10
12
14
16
17
18
19
19
19
19
16
15
14
13
13
13
12
12
11
11
11
12

Feels Like (°C)

7
8
8
10
12
15
16
17
17
17
18
18
17
15
14
13
13
13
13
12
12
11
11
12

Dew Point (°C)

4
5
8
10
11
13
15
16
16
16
15
15
15
14
13
12
12
12
11
11
10
10
9
10

Relative Humidity (%)

63
68
87
86
80
82
86
85
82
80
76
80
90
93
93
93
93
93
95
95
92
90
87
86

Pressure (mb)

1017
1017
1017
1017
1016
1016
1016
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017

Ozone (du)

366
366
365
363
361
359
358
359
360
360
360
359
360
360
359
360
359
358
358
357
357
359
361
363

Thursday 23

First Quarter 49%

11:38

02:49

08 Good
09 OK
10 OK
11 OK
12 OK
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 Bad
02 OK
03 OK
04 OK
05 Good
06 OK
07 OK

Sun - Rise: 06:16, Set: 19:53, Transit: 13:05. Moon - Rise: 11:38, Set: 02:49. Civil Dark: 20:22 - 05:48. Nautical Dark: 20:56 - 05:13. Astro Dark: 21:32 - 04:37

Total Clouds (% Sky Obscured)

17
23
30
26
20
13
15
9
5
12
18
24
79
86
100
88
76
60
41
27
20
13
22
33

Low 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

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
16
30
49
44
39
43
32
21
12
4
2
0

High Clouds (% Sky Obscured)

17
23
30
26
20
11
15
9
5
10
14
16
79
86
100
88
76
33
13
4
5
4
9
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
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
1
2
0
0
0
2
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
4
6
8
8
8
9
8
7
6
4
2
2
3
3
3
3
3
3
3
3
4
4
3

Chance of Frost

Temperature (°C)

13
16
18
20
21
22
23
24
24
24
23
22
20
19
18
17
16
16
15
15
14
13
13
14

Feels Like (°C)

14
16
18
19
19
21
21
21
22
23
23
23
21
18
16
15
15
14
13
12
12
11
13
12

Dew Point (°C)

9
11
10
10
9
10
10
10
10
10
12
13
12
12
11
10
11
9
9
8
8
8
8
7

Relative Humidity (%)

77
72
61
52
48
44
42
42
41
42
49
58
61
63
62
65
68
66
67
63
67
69
68
63

Pressure (mb)

1017
1017
1017
1018
1017
1016
1016
1015
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014

Ozone (du)

362
360
358
358
357
358
357
356
356
354
353
353
353
355
355
355
354
355
356
357
359
358
359
359

Friday 24

Waxing Gibbous 60%

12:51

03:21

08 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 OK
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

Sun - Rise: 06:15, Set: 19:54, Transit: 13:05. Moon - Rise: 12:51, Set: 03:21. Civil Dark: 20:23 - 05:46. Nautical Dark: 20:57 - 05:12. Astro Dark: 21:34 - 04:35

Total Clouds (% Sky Obscured)

41
51
57
52
58
82
78
71
45
59
65
67
70
73
74
63
56
52
61
70
77
80
87
95

Low Clouds (% Sky Obscured)

0
0
5
3
3
5
5
1
0
0
0
0
0
0
0
0
0
0
14
29
43
48
53
58

Medium Clouds (% Sky Obscured)

0
0
0
22
50
82
74
61
45
50
53
56
60
65
70
63
56
49
49
50
50
64
75
76

High Clouds (% Sky Obscured)

8
33
16
20
24
20
18
42
19
14
23
55
55
55
55
55
56
52
61
70
70
56
56
57

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
7
5

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
Very Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
2
3
3
3
4
1
18
24
27
24
19
6
30
37
40
56
72
88

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
0.3
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

15
16
17
19
20
21
22
23
23
23
22
20
18
17
16
14
14
13
12
12
11
11
11
11

Feels Like (°C)

12
13
15
16
19
21
22
23
22
24
22
20
16
15
15
14
14
13
12
10
10
9
9
10

Dew Point (°C)

7
7
8
10
9
10
12
13
12
13
13
13
11
11
11
11
11
11
10
10
10
10
10
10

Relative Humidity (%)

59
57
56
56
50
48
50
50
50
52
58
61
62
67
74
82
83
86
87
90
92
93
95
96

Pressure (mb)

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

Ozone (du)

358
357
356
355
355
354
354
354
354
354
354
354
353
354
355
356
357
357
358
358
358
359
359
359

Saturday 25

Waxing Gibbous 71%

14:01

03:47

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
07 Bad

Sun - Rise: 06:13, Set: 19:55, Transit: 13:05. Moon - Rise: 14:01, Set: 03:47. Civil Dark: 20:24 - 05:45. Nautical Dark: 20:58 - 05:10. Astro Dark: 21:35 - 04:33

Total Clouds (% Sky Obscured)

93
94
93
95
98
100
100
100
100
100
100
100
100
100
100
97
95
93
97
99
100
100
100
100

Low Clouds (% Sky Obscured)

39
19
0
15
43
55
58
56
50
49
43
60
67
73
79
71
62
53
64
75
85
83
80
80

Medium Clouds (% Sky Obscured)

77
80
86
92
91
93
93
94
95
95
98
100
84
67
51
63
76
90
74
60
46
35
24
12

High Clouds (% Sky Obscured)

43
38
38
56
73
100
99
97
96
87
87
87
91
100
100
67
33
0
32
63
95
90
86
68

ISS Passover

Visibility (miles)

2
2
1
0
3
6
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

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

Precipitation Probability (%)

95
95
95
95
86
53
47
49
55
55
56
58
58
57
55
42
33
26
21
16
5
16
21
25

Precipitation Amount (mm)

0.8
1.1
1.4
1
0.6
0
0
0
0.2
0
0.2
0.3
0.3
0.3
0.3
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

11
11
11
11
11
11
11
11
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9

Feels Like (°C)

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

Dew Point (°C)

10
10
10
11
11
11
10
10
9
9
9
9
9
9
9
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

96
96
96
98
96
96
95
95
95
95
96
96
96
95
96
95
96
95
96
96
96
96
98
96

Pressure (mb)

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

Ozone (du)

359
359
359
359
360
361
362
363
364
365
364
364
363
363
364
364
364
363
363
364
365
366
365
364

Sunday 26

Waxing Gibbous 80%

15:08

04:10

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

Sun - Rise: 06:12, Set: 19:56, Transit: 13:05. Moon - Rise: 15:08, Set: 04:10. Civil Dark: 20:25 - 05:43. Nautical Dark: 20:59 - 05:09. Astro Dark: 21:36 - 04:31

Total Clouds (% Sky Obscured)

100
99
99
99
99
97
95
83
62
57
52
50
56
65
75
72
73
75

Low Clouds (% Sky Obscured)

83
85
83
82
82
79
69
59
52
49
47
44
51
59
66
44
22
25

Medium Clouds (% Sky Obscured)

11
9
7
13
20
29
20
11
2
2
2
2
1
1
0
0
0
0

High Clouds (% Sky Obscured)

55
30
2
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3

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 (%)

22
18
12
12
12
11
10
10
9
10
7
2
5
6
3
8
8
11

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)

6
7
7
7
7
7
7
7
7
7
7
7
7
8
8
9
8
7

Chance of Frost

Temperature (°C)

9
10
10
11
11
12
13
13
14
15
14
14
13
12
11
11
10
9

Feels Like (°C)

7
8
8
8
9
9
10
11
11
12
12
12
11
11
10
9
9
8

Dew Point (°C)

8
9
9
9
10
10
11
11
11
12
11
11
10
10
9
8
8
7

Relative Humidity (%)

96
96
93
91
92
89
87
86
83
83
83
83
83
84
83
84
84
82

Pressure (mb)

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

Ozone (du)

363
365
366
368
365
362
360
359
359
359
359
359
359
360
361
362
360
358

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

Generated: 20/04/26 08:51:32. Forecast: 20/04/26 to 26/04/26. Timezone: UTC-4.00