Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 88%

17:16

04:32

21 Bad
22 Bad
23 Bad
00 OK
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
19 Bad
20 Bad

Sun - Rise: 06:11, Set: 19:58, Transit: 13:04. Moon - Rise: 17:16, Set: 04:32. Civil Dark: 20:27 - 05:42. Nautical Dark: 21:01 - 05:07. Astro Dark: 21:38 - 04:30

Total Clouds (% Sky Obscured)

67
85
88
29
69
100
83
97
100
100
100
100
100
100
100
100
100
100
100
100
100
94
63
76

Low Clouds (% Sky Obscured)

0
3
0
0
2
4
0
0
0
0
0
0
33
60
55
46
76
88
98
100
98
90
42
62

Medium Clouds (% Sky Obscured)

0
0
0
22
19
43
25
81
42
19
93
83
98
99
100
100
69
88
98
25
20
20
10
7

High Clouds (% Sky Obscured)

3
18
20
29
35
89
40
90
100
100
100
100
100
100
100
100
100
100
100
100
70
0
0
0

ISS Passover

Visibility (miles)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
2
5
27
24
5
2
35
57
37
55
32
18
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

16
14
12
12
10
9
8
8
8
7
8
9
12
14
14
16
16
15
14
14
13
13
13
13

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
63
70
72
70
76
77
77
74
74
77
72
67
71
74
73
61
62
70
72
72
69
68
76

Pressure (mb)

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

Ozone (du)

347
350
348
347
346
345
343
342
341
339
336
336
336
332
331
329
328
329
329
329
331
335
341
343

Tuesday 28

Waxing Gibbous 94%

18:18

04:53

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
19 Bad
20 Bad

Sun - Rise: 06:10, Set: 19:59, Transit: 13:04. Moon - Rise: 18:18, Set: 04:53. Civil Dark: 20:28 - 05:41. Nautical Dark: 21:02 - 05:06. Astro Dark: 21:39 - 04:28

Total Clouds (% Sky Obscured)

87
88
88
64
95
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
100
100
100

Low Clouds (% Sky Obscured)

87
88
85
34
35
82
41
60
69
81
80
69
91
96
95
88
99
100
100
100
98
79
100
100

Medium Clouds (% Sky Obscured)

11
15
12
4
3
3
0
0
3
68
100
100
100
95
88
79
77
76
72
73
80
89
99
65

High Clouds (% Sky Obscured)

8
0
2
32
73
94
100
100
100
100
100
100
100
100
100
100
100
92
54
62
15
99
80
73

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
2
1
0
0
9
0

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
3
4
1
2
24
61
95
95
95
95
85
82
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1.5
1.6
1.8
1.7
0.2
0
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

13
12
11
11
10
10
10
10
10
11
11
11
12
13
14
15
16
16
16
15
15
15
14
13

Feels Like (°C)

11
9
9
9
10
9
9
8
8
9
9
10
10
10
12
12
14
14
14
14
14
13
13
13

Dew Point (°C)

9
8
8
7
8
7
7
8
8
9
8
8
8
8
9
10
11
13
15
15
15
15
14
13

Relative Humidity (%)

76
76
79
77
84
83
83
84
85
85
81
79
77
75
74
70
69
82
95
98
100
98
96
98

Pressure (mb)

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

Ozone (du)

345
340
339
336
333
333
339
339
340
339
338
340
338
337
337
339
341
345
352
357
366
370
374
370

Wednesday 29

Waxing Gibbous 98%

19:21

05:16

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

Sun - Rise: 06:08, Set: 20:00, Transit: 13:04. Moon - Rise: 19:21, Set: 05:16. Civil Dark: 20:29 - 05:39. Nautical Dark: 21:03 - 05:04. Astro Dark: 21:41 - 04:26

Total Clouds (% Sky Obscured)

96
95
93
73
34
59
57
44
24
17
23
35
30
28
31
23
24
27
40
52
32
15
6
13

Low Clouds (% Sky Obscured)

93
91
88
73
34
59
48
34
17
11
17
25
27
19
15
20
23
15
15
7
0
0
0
0

Medium Clouds (% Sky Obscured)

41
39
18
0
0
0
0
5
0
0
0
0
0
9
15
1
1
7
15
24
15
11
0
0

High Clouds (% Sky Obscured)

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

ISS Passover

Visibility (miles)

0
0
0
0
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

2
38
86
1
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 (%)

69
34
31
23
16
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

13
13
13
12
11
10
9
9
8
7
6
7
7
6
4
3
3
3
2
2
3
4
5
3

Relative Humidity (%)

98
100
100
98
92
92
91
91
93
93
90
85
75
63
50
45
43
39
36
36
41
46
53
53

Pressure (mb)

1007
1008
1007
1007
1008
1007
1007
1008
1009
1009
1010
1011
1011
1011
1011
1011
1010
1010
1011
1010
1010
1011
1011
1012

Ozone (du)

379
383
388
387
385
389
395
395
390
387
385
379
377
377
378
377
379
381
384
388
389
389
387
388

Thursday 30

Waxing Gibbous 100%

20:24

05:41

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

Sun - Rise: 06:07, Set: 20:01, Transit: 13:04. Moon - Rise: 20:24, Set: 05:41. Civil Dark: 20:30 - 05:38. Nautical Dark: 21:04 - 05:03. Astro Dark: 21:42 - 04:25

Total Clouds (% Sky Obscured)

0
1
8
16
24
31
39
39
25
14
5
18
33
74
53
46
43
65
76
89
85
86
88
87

Low Clouds (% Sky Obscured)

0
0
0
0
0
14
28
39
25
13
1
14
27
41
32
21
11
8
6
3
2
1
0
0

Medium Clouds (% Sky Obscured)

0
0
6
14
20
22
22
22
15
7
0
0
0
0
11
24
36
54
65
87
82
72
58
55

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
3
2
10
20
59
22
15
14
24
30
39
30
16
60
58

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)

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

Chance of Frost

Temperature (°C)

11
10
9
8
7
7
6
6
5
6
7
9
10
12
13
14
14
15
15
16
16
15
14
12

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

58
66
68
69
73
75
75
78
82
85
82
73
59
52
51
49
45
43
41
40
42
48
58
61

Pressure (mb)

1013
1013
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1016
1015
1015
1014
1014
1013
1014
1014
1014

Ozone (du)

389
388
387
386
384
380
379
378
377
373
371
368
369
367
368
363
359
355
351
347
345
344
342
341

Friday 1

Full Moon 100%

No Rise

06:10

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
19 Bad
20 Bad

Sun - Rise: 06:06, Set: 20:02, Transit: 13:04. Moon - Rise: No Rise, Set: 06:10. Civil Dark: 20:31 - 05:37. Nautical Dark: 21:06 - 05:01. Astro Dark: 21:44 - 04:23

Total Clouds (% Sky Obscured)

93
99
100
100
100
100
100
100
100
100
100
99
97
95
96
98
100
98
96
94
96
98
100
100

Low Clouds (% Sky Obscured)

0
0
0
4
5
18
35
53
52
51
51
49
48
47
47
47
47
48
49
51
48
46
44
41

Medium Clouds (% Sky Obscured)

51
48
53
69
100
100
100
100
100
100
100
96
92
90
93
96
100
94
89
83
86
77
70
77

High Clouds (% Sky Obscured)

78
99
87
73
70
60
60
55
55
55
55
55
55
55
47
45
44
37
15
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
4
3
2
1
1
1
1
2
3
4
4
4
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
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain

Precipitation Probability (%)

0
0
0
1
0
7
11
15
30
55
95
95
95
95
95
95
95
95
95
95
95
95
80
73

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0.2
0.7
0.9
1.1
1.3
1.5
1.5
1.6
1.5
1.4
1.2
1
0.7
0.4
0.3

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

63
63
63
61
58
56
60
60
60
64
77
91
93
96
98
96
98
96
96
96
96
96
96
96

Pressure (mb)

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

Ozone (du)

341
341
342
342
339
336
336
335
337
338
341
342
341
340
339
339
338
338
340
342
344
345
346
347

Saturday 2

Waning Gibbous 98%

21:27

06:45

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

Sun - Rise: 06:05, Set: 20:03, Transit: 13:04. Moon - Rise: 21:27, Set: 06:45. Civil Dark: 20:32 - 05:36. Nautical Dark: 21:07 - 05:00. Astro Dark: 21:45 - 04:21

Total Clouds (% Sky Obscured)

100
100
92
84
58
42
22
15
10
5
0
8
16
24
44
64
76
53
59
71
50
29
8
6

Low Clouds (% Sky Obscured)

38
36
33
45
48
42
22
15
10
0
0
1
3
4
3
1
0
1
5
10
7
4
1
6

Medium Clouds (% Sky Obscured)

81
82
66
51
19
11
13
7
1
0
0
7
13
17
21
22
13
8
4
0
0
0
4
4

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
0
0
0

ISS Passover

Visibility (miles)

6
8
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

Very Light Rain
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 (%)

65
59
51
42
30
22
17
10
8
5
1
3
2
0
0
0
0
0
0
0
0
0
0
5

Precipitation Amount (mm)

0.2
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)

6
7
7
7
7
8
8
8
7
8
8
9
10
10
12
12
13
13
13
12
12
10
9
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
96
94
94
96
93
93
93
90
85
84
69
57
46
45
44
44
44
44
45
51
58
66

Pressure (mb)

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

Ozone (du)

349
351
354
356
358
360
365
370
375
376
377
378
375
373
370
371
371
372
372
372
372
373
374
375

Sunday 3

Waning Gibbous 94%

22:28

07:26

21 Good
22 Good
23 Good
00 Good
01 Good
02 OK
03 OK
04 OK
05 OK
06 Good
07 Good
08 OK
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad

Sun - Rise: 06:04, Set: 20:04, Transit: 13:04. Moon - Rise: 22:28, Set: 07:26. Civil Dark: 20:33 - 05:34. Nautical Dark: 21:08 - 04:58. Astro Dark: 21:46 - 04:20

Total Clouds (% Sky Obscured)

5
4
4
5
10
21
34
31
20
10
0
30
58
78
65
70
84

Low Clouds (% Sky Obscured)

5
4
4
5
10
21
34
28
19
9
0
0
0
0
16
31
35

Medium Clouds (% Sky Obscured)

5
4
4
5
10
15
9
3
2
1
0
0
0
0
3
3
4

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
29
43
37
42
53
61

ISS Passover

Visibility (miles)

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

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

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

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

9
9
8
8
7
7
7
7
6
8
9
10
12
14
17
18
19

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

67
67
67
66
66
66
69
71
71
70
68
66
58
52
46
45
43

Pressure (mb)

1012
1012
1012
1012
1012
1012
1012
1013
1013
1013
1013
1013
1013
1012
1012
1011
1010

Ozone (du)

379
383
388
387
386
385
383
381
379
378
377
375
375
375
374
374
375

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

Generated: 27/04/26 21:26:11. Forecast: 27/04/26 to 03/05/26. Timezone: UTC-4.00