Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 27

Waxing Gibbous 98%

19:30

04:39

19 Bad
20 Bad
21 OK
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: 05:57, Set: 20:19, Transit: 13:07. Moon - Rise: 19:30, Set: 04:39. Civil Dark: 20:50 - 05:26. Nautical Dark: 21:27 - 04:49. Astro Dark: 22:09 - 04:07

Total Clouds (% Sky Obscured)

72
61
32
22
22
86
100
52
94
100
100
100
100
100
100
100
100
100
100
100
100
71
100
100

Low Clouds (% Sky Obscured)

31
51
31
21
22
34
49
49
46
55
48
45
86
54
81
82
80
72
80
75
63
71
81
64

Medium Clouds (% Sky Obscured)

21
45
5
2
2
0
0
0
0
4
16
33
85
100
98
100
100
95
52
80
54
38
6
3

High Clouds (% Sky Obscured)

17
0
3
2
0
74
100
37
89
100
100
100
100
100
100
100
100
98
100
100
100
61
100
100

ISS Passover

Visibility (miles)

9
9
9
9
3
9
9
9
9
9
9
9
3
2
8
9
3
9
9
2
9
9
2
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
63
0
0

Precipitation Type

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

Precipitation Probability (%)

2
5
19
34
35
15
22
0
0
0
2
24
41
68
90
95
95
95
95
95
95
95
95
81

Precipitation Amount (mm)

0
0
0
0.2
0
0
0
0
0
0
0
0
0
0.3
0.5
2.5
4.2
3.9
4.6
3.4
6
1.5
1.4
0.4

Wind Speed/Direction (mph)

4
1
0
4
5
5
6
6
4
4
5
6
7
7
7
6
7
7
10
11
10
9
9
5

Chance of Frost

Temperature (°C)

24
23
22
24
23
22
22
21
21
21
21
21
22
22
23
23
23
23
24
24
24
24
25
23

Feels Like (°C)

25
24
22
26
26
26
22
23
25
23
23
23
23
23
25
25
25
25
25
24
25
26
27
26

Dew Point (°C)

11
14
14
17
18
19
19
19
19
19
19
20
20
21
20
21
22
21
18
19
21
21
20
21

Relative Humidity (%)

45
55
63
65
76
80
83
87
87
87
88
89
91
91
85
91
92
92
72
77
80
80
73
87

Pressure (mb)

1009
1009
1009
1009
1008
1009
1008
1008
1007
1007
1006
1006
1006
1006
1005
1005
1004
1004
1003
1002
1002
1001
1001
1000

Ozone (du)

339
339
341
341
339
334
331
329
324
323
319
318
316
318
321
324
324
329
328
327
327
329
327
328

Tuesday 28

Waxing Gibbous 100%

20:05

05:43

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

Sun - Rise: 05:58, Set: 20:18, Transit: 13:07. Moon - Rise: 20:05, Set: 05:43. Civil Dark: 20:48 - 05:27. Nautical Dark: 21:26 - 04:50. Astro Dark: 22:08 - 04:08

Total Clouds (% Sky Obscured)

100
100
42
33
26
30
29
28
16
11
2
0
0
17
65
33
66
89
96
86
86
82
88
86

Low Clouds (% Sky Obscured)

72
53
42
33
26
30
29
28
16
11
2
0
0
17
36
33
56
65
65
72
30
26
60
41

Medium Clouds (% Sky Obscured)

15
17
10
0
0
0
0
0
0
0
0
0
0
0
0
0
21
30
86
52
73
67
74
76

High Clouds (% Sky Obscured)

100
100
2
2
0
0
0
0
0
0
0
0
0
0
65
2
1
29
38
21
2
13
50
45

ISS Passover

Visibility (miles)

9
9
4
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
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
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

Precipitation Probability (%)

93
65
30
4
0
0
0
5
0
0
0
0
0
0
0
1
14
17
16
22
18
7
7
6

Precipitation Amount (mm)

1.2
0.3
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
5
4
5
5
4
4
4
4
4
5
4
4
6
6
8
8
9
9
11
11
10
11
10

Chance of Frost

Temperature (°C)

22
22
22
21
21
21
20
20
20
20
20
19
20
21
23
24
25
26
27
27
27
26
27
26

Feels Like (°C)

23
23
23
24
24
24
24
24
23
23
23
23
23
24
26
26
27
27
27
26
26
26
26
25

Dew Point (°C)

20
20
20
20
20
20
20
19
19
19
18
18
18
18
18
16
16
16
16
16
17
18
18
19

Relative Humidity (%)

85
88
92
94
94
93
95
95
93
93
92
92
91
82
74
62
56
54
50
50
54
60
59
68

Pressure (mb)

1001
1001
1002
1002
1002
1002
1001
1001
1002
1002
1001
1002
1002
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003
1003

Ozone (du)

329
332
340
339
336
335
335
335
339
338
337
337
339
340
340
341
342
339
339
340
339
338
338
337

Wednesday 29

Full Moon 100%

20:35

06:48

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

Sun - Rise: 05:59, Set: 20:17, Transit: 13:07. Moon - Rise: 20:35, Set: 06:48. Civil Dark: 20:47 - 05:28. Nautical Dark: 21:25 - 04:51. Astro Dark: 22:06 - 04:10

Total Clouds (% Sky Obscured)

92
86
97
81
87
54
96
41
51
56
55
45
39
58
81
88
91
96
78
81
96
97
93
82

Low Clouds (% Sky Obscured)

38
20
43
68
65
33
39
10
29
35
39
44
39
38
53
64
56
79
78
81
77
72
61
50

Medium Clouds (% Sky Obscured)

87
73
92
57
46
16
23
2
0
0
0
16
30
40
47
32
47
34
38
40
44
46
46
44

High Clouds (% Sky Obscured)

11
26
25
2
0
27
63
33
45
45
2
2
0
0
0
5
3
2
2
0
0
6
3
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 (%)

7
5
4
0
0
0
0
0
0
0
0
0
0
0
3
25
40
31
13
10
17
10
21
16

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)

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

Chance of Frost

Temperature (°C)

25
24
23
22
22
22
21
21
20
20
20
20
20
21
22
23
24
24
24
25
25
25
25
25

Feels Like (°C)

24
23
22
22
22
21
21
20
20
20
20
19
21
22
23
24
23
23
23
24
25
25
24
24

Dew Point (°C)

19
17
17
18
18
17
17
17
17
16
16
16
17
17
17
17
17
17
17
16
15
17
16
16

Relative Humidity (%)

68
66
71
75
76
75
77
77
79
79
78
80
81
75
69
65
65
62
64
57
55
60
56
60

Pressure (mb)

1003
1004
1004
1004
1004
1004
1004
1004
1004
1005
1005
1005
1006
1006
1006
1007
1007
1007
1007
1007
1007
1007
1007
1007

Ozone (du)

339
339
337
340
341
341
342
339
338
339
340
340
340
337
333
330
329
329
329
330
329
329
329
332

Thursday 30

Waning Gibbous 97%

21:01

07:52

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

Sun - Rise: 06:00, Set: 20:16, Transit: 13:07. Moon - Rise: 21:01, Set: 07:52. Civil Dark: 20:46 - 05:29. Nautical Dark: 21:24 - 04:52. Astro Dark: 22:05 - 04:11

Total Clouds (% Sky Obscured)

53
56
51
52
38
32
17
30
39
50
53
56
63
63
63
67
68
72
34
43
76
71
76
52

Low Clouds (% Sky Obscured)

39
42
44
47
31
16
0
10
19
29
32
27
29
34
34
38
36
37
28
30
35
41
43
20

Medium Clouds (% Sky Obscured)

42
47
46
48
33
19
2
3
4
4
2
2
3
2
3
3
9
13
22
28
59
39
36
31

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
1
10
20
30
30
0
0
0
0
0
0
0
0
0
0
0
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
8
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 (%)

18
3
0
0
0
0
0
0
0
0
0
0
0
0
0
4
15
12
9
17
10
23
20
13

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)

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

Chance of Frost

Temperature (°C)

24
24
23
22
22
21
20
20
20
20
19
20
20
21
22
23
24
25
26
28
29
29
29
28

Feels Like (°C)

24
24
24
24
23
23
22
22
21
20
20
20
21
21
23
25
26
26
28
31
32
30
30
28

Dew Point (°C)

16
17
16
16
16
16
16
16
16
15
15
16
16
16
17
18
18
19
19
18
17
17
18
19

Relative Humidity (%)

60
64
66
68
72
74
76
77
76
76
77
77
76
75
74
71
68
67
63
52
49
47
51
58

Pressure (mb)

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

Ozone (du)

335
333
333
330
330
331
331
333
332
331
329
326
325
326
328
328
329
329
330
330
329
325
324
321

Friday 31

Waning Gibbous 93%

21:25

08:56

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

Sun - Rise: 06:00, Set: 20:15, Transit: 13:07. Moon - Rise: 21:25, Set: 08:56. Civil Dark: 20:45 - 05:30. Nautical Dark: 21:22 - 04:53. Astro Dark: 22:03 - 04:13

Total Clouds (% Sky Obscured)

31
31
31
31
39
44
52
65
66
90
49
32
20
32
41
53
61
72
86
91
96
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
9
18
26
18
9
0
0
0
0
11
21
25
38
56
73
74
71

Medium Clouds (% Sky Obscured)

29
25
21
20
11
5
0
0
2
2
5
10
18
12
6
0
11
22
31
38
42
49
42
36

High Clouds (% Sky Obscured)

0
0
0
0
17
35
52
64
63
82
43
19
3
25
41
53
59
60
64
77
86
93
96
98

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 (%)

17
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
11
7
17
17
10
14
12

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

Chance of Frost

Temperature (°C)

27
26
24
23
22
21
21
21
20
19
18
19
20
22
23
25
27
28
30
31
30
30
30
29

Feels Like (°C)

29
29
28
27
26
26
26
25
24
23
21
23
25
26
26
27
28
29
30
31
34
33
32
31

Dew Point (°C)

18
20
19
18
18
17
17
17
17
17
16
17
18
17
17
17
17
16
16
15
16
17
18
18

Relative Humidity (%)

59
70
72
74
76
77
79
81
85
86
88
89
84
76
67
59
52
47
42
38
41
44
47
51

Pressure (mb)

1012
1012
1013
1013
1014
1014
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1013
1013
1012
1013

Ozone (du)

320
320
319
317
315
314
314
312
311
310
309
308
309
309
309
309
309
309
309
308
308
307
306
305

Saturday 1

Waning Gibbous 87%

21:47

10:01

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: 06:01, Set: 20:14, Transit: 13:07. Moon - Rise: 21:47, Set: 10:01. Civil Dark: 20:44 - 05:31. Nautical Dark: 21:21 - 04:55. Astro Dark: 22:02 - 04:14

Total Clouds (% Sky Obscured)

100
99
98
97
94
94
94
97
99
100
100
100
100
100
100
100
92
84
76
68
63
62
76
81

Low Clouds (% Sky Obscured)

48
8
3
0
4
8
13
8
4
0
0
0
0
0
0
0
15
29
44
44
44
44
42
40

Medium Clouds (% Sky Obscured)

27
30
30
39
37
34
29
41
56
73
80
88
96
91
86
81
76
74
71
59
56
58
43
27

High Clouds (% Sky Obscured)

100
97
94
89
89
91
94
97
99
100
100
100
100
100
100
100
92
84
76
68
63
62
76
81

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 (%)

6
6
4
0
0
0
0
0
0
0
2
3
2
6
7
4
13
16
18
20
21
19
19
15

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)

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

Chance of Frost

Temperature (°C)

28
26
25
24
23
23
22
22
22
22
22
22
22
23
24
25
27
27
28
28
28
28
28
28

Feels Like (°C)

30
30
25
25
25
25
25
24
23
24
24
24
24
23
25
25
25
25
25
25
31
30
29
30

Dew Point (°C)

18
19
19
19
19
19
19
19
19
19
19
19
19
19
18
16
15
14
12
11
12
14
15
16

Relative Humidity (%)

57
62
66
71
75
76
79
81
83
84
85
83
80
79
67
56
48
43
38
34
38
41
45
50

Pressure (mb)

1013
1013
1013
1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1015
1015
1015
1015
1015
1014
1014
1014
1014
1013
1014

Ozone (du)

304
303
303
303
303
303
302
301
300
300
299
299
300
300
302
303
304
304
304
304
303
301
300
300

Sunday 2

Waning Gibbous 78%

22:08

11:07

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

Sun - Rise: 06:02, Set: 20:13, Transit: 13:07. Moon - Rise: 22:08, Set: 11:07. Civil Dark: 20:43 - 05:32. Nautical Dark: 21:20 - 04:56. Astro Dark: 22:00 - 04:16

Total Clouds (% Sky Obscured)

86
87
93
97
96
99
100
76
54
39
45
91
100
100
100
100
100
98
97

Low Clouds (% Sky Obscured)

37
25
12
0
9
17
26
25
25
24
16
9
1
12
23
31
30
30
30

Medium Clouds (% Sky Obscured)

12
15
20
23
16
9
2
12
31
39
45
65
66
64
67
65
75
76
78

High Clouds (% Sky Obscured)

86
87
93
94
94
97
100
76
54
39
40
45
39
35
36
28
27
25
24

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Probability (%)

5
6
5
1
6
8
8
19
18
3
7
7
1
4
6
6
15
17
13

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

27
26
25
24
23
23
23
22
22
22
22
22
23
24
25
26
27
28
29

Feels Like (°C)

30
30
26
26
26
27
26
25
23
24
24
24
25
25
28
29
30
30
30

Dew Point (°C)

17
18
19
19
20
20
20
20
20
20
20
20
20
21
22
23
24
24
24

Relative Humidity (%)

55
60
66
73
80
81
84
88
88
89
89
87
84
82
80
81
81
78
75

Pressure (mb)

1014
1014
1014
1014
1014
1014
1014
1014
1014
1014
1013
1014
1014
1014
1014
1014
1015
1014
1014

Ozone (du)

300
300
299
299
299
297
296
295
295
295
295
296
296
296
296
296
296
295
295

Forecast for Swarthmore, Delaware, United States of America (39.90,-75.35)

Generated: 27/07/26 19:02:16. Forecast: 27/07/26 to 02/08/26. Timezone: UTC-4.00