Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 23

First Quarter 49%

11:38

02:49

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

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)

22
21
23
30
36
28
22
36
42
74
20
37
64
71
47
69
23
26
71
48
58
100
94
59

Low Clouds (% Sky Obscured)

0
6
10
5
6
4
0
7
0
6
0
0
0
0
12
45
14
6
0
0
8
0
0
0

Medium Clouds (% Sky Obscured)

0
0
1
3
7
9
14
12
12
13
4
0
1
7
0
1
0
11
16
10
10
9
81
59

High Clouds (% Sky Obscured)

3
1
6
3
18
6
3
7
13
30
6
30
40
52
47
30
4
5
50
39
41
100
66
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
1
2
1
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
5
7
8
8
8
8
7
7
7
6
4
3
4
4
3
4
4
5
5
4
4
4
3

Chance of Frost

Temperature (°C)

14
17
20
23
25
26
27
27
28
27
26
25
24
20
18
17
16
15
15
14
14
13
12
12

Feels Like (°C)

15
18
20
23
25
26
27
27
28
26
26
27
24
20
17
17
15
15
15
12
12
12
10
11

Dew Point (°C)

10
11
13
15
16
16
16
15
14
14
16
17
17
13
11
11
9
9
9
8
8
7
6
6

Relative Humidity (%)

75
68
65
61
57
54
50
47
44
45
53
61
63
61
62
65
64
65
69
67
67
65
65
66

Pressure (mb)

1015
1015
1015
1015
1014
1014
1013
1012
1011
1011
1011
1011
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

356
356
355
354
354
353
352
350
350
350
350
348
349
350
351
350
350
350
350
352
352
352
352
350

Friday 24

Waxing Gibbous 60%

12:51

03:21

08 Bad
09 OK
10 Bad
11 OK
12 OK
13 OK
14 OK
15 OK
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
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)

50
42
49
38
29
33
17
23
72
70
100
43
67
54
26
51
75
90
83
94
88
66
87
87

Low Clouds (% Sky Obscured)

0
0
7
5
12
30
13
8
44
22
23
3
6
0
0
0
0
0
2
2
20
25
3
10

Medium Clouds (% Sky Obscured)

50
42
49
38
11
2
0
0
43
49
58
32
60
39
26
14
58
62
62
86
73
59
87
87

High Clouds (% Sky Obscured)

0
3
2
3
4
6
10
13
44
16
50
17
8
22
3
30
28
27
45
52
64
17
16
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
6
9
5
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
Very Light Rain
Light Rain
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
1
4
3
4
6
9
26
50
63
52
56
28
6
0
3
9
7
8
10
1
6
8
19

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0.4
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
16
18
20
21
23
25
26
26
26
26
24
21
18
17
16
15
14
14
13
13
12
12
11

Feels Like (°C)

12
14
16
20
22
24
25
27
27
26
25
23
21
16
16
16
13
12
11
11
11
11
10
10

Dew Point (°C)

7
7
8
10
11
14
15
15
15
19
21
19
18
15
15
14
13
12
11
10
10
10
9
9

Relative Humidity (%)

61
56
52
52
51
55
54
52
52
67
73
74
85
82
87
86
85
84
84
83
83
84
84
86

Pressure (mb)

1012
1012
1012
1011
1011
1010
1009
1009
1008
1008
1008
1009
1009
1010
1010
1010
1010
1010
1009
1009
1009
1009
1009
1009

Ozone (du)

351
350
350
351
350
350
349
350
348
347
347
348
349
350
351
349
349
349
349
349
349
350
351
351

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)

100
98
96
96
99
95
100
99
74
65
100
100
80
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

15
17
26
26
33
34
36
44
55
54
50
61
74
78
83
94
96
99
99
100
100
100
100
100

Medium Clouds (% Sky Obscured)

85
60
64
87
99
88
100
75
39
5
0
20
15
21
45
40
35
35
40
45
50
42
56
51

High Clouds (% Sky Obscured)

100
94
87
65
73
60
100
97
34
41
100
100
26
90
85
86
95
85
80
80
80
85
90
90

ISS Passover

Visibility (miles)

9
9
9
9
9
6
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
Very Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

4
8
15
21
55
56
40
36
21
8
6
1
1
0
1
9
22
14
35
25
17
12
20
6

Precipitation Amount (mm)

0
0
0
0
0.3
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
13
15
17
18
17
17
18
18
17
16
14
12
11
11
11
10
10
9
9
9
8
8
8

Feels Like (°C)

10
11
14
17
19
18
18
18
17
14
13
12
10
8
9
9
8
8
8
6
6
6
5
4

Dew Point (°C)

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

Relative Humidity (%)

86
86
75
68
62
67
81
68
70
77
82
83
86
84
85
85
85
87
88
91
91
90
90
90

Pressure (mb)

1009
1010
1010
1009
1009
1009
1009
1008
1008
1009
1009
1010
1011
1012
1012
1013
1013
1014
1014
1015
1015
1016
1017
1018

Ozone (du)

352
354
354
353
355
355
356
357
356
356
358
362
364
367
368
371
374
376
377
378
382
382
382
382

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

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
100
100
100
100
100
100
100
100
83
68
60
61
53
10
23
10
5
16
20
15
10
5
1

Low Clouds (% Sky Obscured)

100
100
100
94
87
81
70
58
47
33
23
15
8
7
1
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

34
17
0
0
0
0
0
0
0
19
20
10
1
1
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

90
91
96
98
100
100
100
100
57
82
68
60
15
2
0
0
0
5
16
20
15
10
5
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
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 (%)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

88
87
82
74
67
61
60
61
61
64
63
66
65
64
65
74
77
79
81
84
85
85
88
87

Pressure (mb)

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

Ozone (du)

381
380
378
377
376
374
373
372
371
370
369
370
371
366
366
366
364
361
361
362
363
362
361
361

Monday 27

Waxing Gibbous 88%

16:13

04:32

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

Sun - Rise: 06:11, Set: 19:57, Transit: 13:05. Moon - Rise: 16:13, Set: 04:32. Civil Dark: 20:26 - 05:42. Nautical Dark: 21:01 - 05:07. Astro Dark: 21:38 - 04:30

Total Clouds (% Sky Obscured)

0
3
2
19
19
40
30
30
30
30
25
25
22
19
10
28
53
78
77
77
75
83
94
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
9
13
24
35
46

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
16
37
46

High Clouds (% Sky Obscured)

0
3
2
19
19
40
30
30
30
30
25
25
22
19
10
28
53
78
77
77
75
83
94
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
0
0
0
0
0
0
0
2
9
18

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

Chance of Frost

Temperature (°C)

9
11
13
15
16
17
18
18
18
18
17
15
13
12
11
10
9
8
8
8
8
8
8
9

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

78
66
55
48
43
41
40
40
41
43
49
53
58
62
65
68
72
73
77
78
81
84
82
82

Pressure (mb)

1026
1026
1026
1025
1025
1024
1024
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1024
1024
1023
1023
1022
1022
1022

Ozone (du)

360
357
356
354
354
354
354
352
352
351
348
348
347
347
346
345
344
343
342
340
338
336
336
337

Tuesday 28

Waxing Gibbous 94%

17:16

04:53

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: 06:10, Set: 19:58, Transit: 13:04. Moon - Rise: 17:16, Set: 04:53. Civil Dark: 20:27 - 05:41. Nautical Dark: 21:02 - 05:06. Astro Dark: 21:39 - 04:28

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
97
93
86
89
95
100

Low Clouds (% Sky Obscured)

40
33
27
26
41
45
50
50
45
31
2
3
4
4
4
18
31
44
55
64
70
67
64
59

Medium Clouds (% Sky Obscured)

43
44
55
80
85
100
90
79
69
67
68
68
76
84
78
53
49
44
41
39
37
50
63
77

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
98
97
95
89
83
74
83
91
100
97
93
86
89
95
100

ISS Passover

Visibility (miles)

9
6
4
1
1
1
1
0
0
0
0
0
0
0
1
1
4
6
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
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
None
None
None

Precipitation Probability (%)

74
95
95
95
95
95
95
95
79
62
46
34
24
15
6
15
18
18
39
51
60
46
34
25

Precipitation Amount (mm)

0.4
0.8
1.2
1.5
1.8
2
1.1
0.8
0.4
0.2
0
0
0
0
0
0
0
0
0
0.2
0.4
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
9
10
10
10
11
11
11
11
11
11
11
12
12
12
12
11
11
11
11
10
10
11
12

Feels Like (°C)

4
6
7
7
7
7
7
8
8
9
9
9
10
11
11
11
11
11
11
11
10
10
10
10

Dew Point (°C)

6
7
8
9
10
10
10
11
11
11
11
11
12
12
11
11
11
11
11
10
10
10
10
11

Relative Humidity (%)

82
87
91
96
96
98
98
98
98
98
100
98
100
100
98
98
100
98
98
98
98
98
96
95

Pressure (mb)

1022
1022
1021
1020
1020
1019
1018
1017
1017
1016
1016
1016
1016
1016
1016
1016
1015
1015
1015
1014
1014
1014
1014
1014

Ozone (du)

337
337
338
338
337
336
336
338
341
344
349
353
358
361
364
367
368
369
370
374
378
382
381
381

Wednesday 29

Waxing Gibbous 98%

18:18

05:16

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 OK
23 Bad
00 Bad
01 Bad

Sun - Rise: 06:08, Set: 19:59, Transit: 13:04. Moon - Rise: 18:18, Set: 05:16. Civil Dark: 20:28 - 05:39. Nautical Dark: 21:03 - 05:04. Astro Dark: 21:41 - 04:26

Total Clouds (% Sky Obscured)

80
60
39
46
53
62
76
92
100
99
99
99
69
42
22
46
63
75

Low Clouds (% Sky Obscured)

55
51
39
46
53
62
74
79
76
61
46
31
21
10
0
0
0
17

Medium Clouds (% Sky Obscured)

60
49
37
39
34
23
17
11
6
4
2
1
16
32
22
46
63
75

High Clouds (% Sky Obscured)

80
60
39
46
53
62
76
92
100
99
99
99
69
42
22
46
63
68

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

Precipitation Probability (%)

50
65
79
79
84
90
88
82
73
59
47
38
34
26
2
14
19
18

Precipitation Amount (mm)

0
0.3
0.4
0.4
0.5
0.5
0.5
0.5
0.4
0.3
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

12
14
16
17
18
19
20
20
20
20
19
18
17
17
16
16
15
15

Feels Like (°C)

10
13
13
13
14
15
15
20
20
19
20
20
21
15
15
15
14
14

Dew Point (°C)

11
12
11
10
10
10
10
10
10
10
11
11
12
11
11
10
11
11

Relative Humidity (%)

93
83
72
63
59
55
52
52
52
52
57
63
70
69
71
70
74
76

Pressure (mb)

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

Ozone (du)

380
381
382
383
383
384
384
383
383
383
381
380
379
378
378
378
375
373

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

Generated: 23/04/26 08:07:03. Forecast: 23/04/26 to 29/04/26. Timezone: UTC-4.00