Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 17

Waning Gibbous 76%

00:42

09:22

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

Sun - Rise: 06:17, Set: 19:43, Transit: 13:00. Moon - Rise: 00:42, Set: 09:22. Civil Dark: 20:10 - 05:49. Nautical Dark: 20:44 - 05:15. Astro Dark: 21:20 - 04:39

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
40
71
67
4
34
38
20
8
35
45
90
60
100
100
59
55
77

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
0
0
0
11
45
73
60
100
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
40
71
67
3
32
33
19
7
24
6
87
51
100
100
36
55
69

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)

6
5
4
4
4
3
4
3
3
3
3
4
6
8
10
12
13
14
15
16
15
15
13
12

Chance of Frost

Temperature (°C)

11
10
9
9
9
9
8
8
7
6
6
6
8
11
14
16
18
20
21
21
21
20
20
18

Feels Like (°C)

10
9
8
8
8
8
8
7
6
5
6
5
5
7
10
14
14
15
16
16
16
16
18
15

Dew Point (°C)

-3
-2
-2
-1
-1
-1
-1
-1
-1
-2
-2
-3
-2
0
2
4
6
7
7
9
9
10
10
10

Relative Humidity (%)

39
44
47
48
50
51
54
56
56
55
55
54
48
47
46
44
43
42
41
45
48
50
55
60

Pressure (mb)

1023
1024
1024
1024
1025
1025
1025
1025
1025
1026
1026
1026
1027
1027
1026
1025
1025
1024
1023
1021
1020
1020
1020
1020

Ozone (du)

360
360
358
358
356
353
351
352
343
345
346
347
344
341
341
339
339
337
339
339
338
336
335
335

Friday 18

Waning Gibbous 67%

01:34

10:20

20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
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

Sun - Rise: 06:15, Set: 19:44, Transit: 13:00. Moon - Rise: 01:34, Set: 10:20. Civil Dark: 20:11 - 05:47. Nautical Dark: 20:45 - 05:13. Astro Dark: 21:21 - 04:37

Total Clouds (% Sky Obscured)

91
100
100
97
100
92
79
35
95
98
98
100
96
100
99
100
99
63
71
98
100
81
69
82

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
14
3
0
0
5
6
16
22
7
0

Medium Clouds (% Sky Obscured)

23
25
73
19
15
22
20
0
86
43
62
72
85
100
45
78
68
63
31
56
70
72
69
82

High Clouds (% Sky Obscured)

79
100
100
97
100
77
43
33
87
95
97
100
60
57
98
73
98
31
71
34
40
42
40
72

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)

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

Chance of Frost

Temperature (°C)

16
15
15
15
15
15
15
15
15
15
15
15
16
18
20
22
24
25
26
27
27
27
26
25

Feels Like (°C)

14
13
12
12
12
12
12
13
13
12
12
13
14
15
17
19
21
22
24
26
25
25
25
24

Dew Point (°C)

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

Relative Humidity (%)

66
72
73
71
73
73
74
74
76
76
79
80
78
70
62
54
50
52
46
43
43
49
53
55

Pressure (mb)

1020
1020
1020
1019
1019
1018
1018
1017
1017
1017
1017
1018
1019
1019
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

334
331
330
329
327
325
322
320
318
318
318
318
319
320
319
317
317
317
316
316
315
315
314
314

Saturday 19

Waning Gibbous 57%

02:19

11:25

20 Bad
21 Bad
22 OK
23 Bad
00 Bad
01 OK
02 OK
03 OK
04 OK
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

Sun - Rise: 06:14, Set: 19:45, Transit: 13:00. Moon - Rise: 02:19, Set: 11:25. Civil Dark: 20:12 - 05:46. Nautical Dark: 20:47 - 05:11. Astro Dark: 21:23 - 04:35

Total Clouds (% Sky Obscured)

100
59
38
86
52
38
26
44
20
97
97
93
94
99
90
97
93
85
89
94
97
98
99
100

Low Clouds (% Sky Obscured)

0
0
24
21
37
21
7
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

27
33
2
55
1
15
19
14
10
88
69
61
67
74
69
62
27
85
87
92
94
93
93
93

High Clouds (% Sky Obscured)

100
25
20
25
36
30
26
44
20
21
15
34
51
96
68
87
67
67
72
79
85
90
95
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 (%)

3
7
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

16
16
16
14
13
12
13
13
13
13
13
12
10
7
6
5
5
5
5
3
3
3
1
1

Relative Humidity (%)

59
64
65
62
61
61
67
74
78
82
86
87
76
60
54
49
45
41
38
35
33
33
31
32

Pressure (mb)

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

Ozone (du)

314
313
314
314
313
312
313
311
310
309
309
310
309
310
311
312
311
310
310
309
309
310
311
311

Sunday 20

Third Quarter 46%

02:58

12:34

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
19 Bad

Sun - Rise: 06:13, Set: 19:46, Transit: 12:59. Moon - Rise: 02:58, Set: 12:34. Civil Dark: 20:14 - 05:44. Nautical Dark: 20:48 - 05:10. Astro Dark: 21:24 - 04:33

Total Clouds (% Sky Obscured)

100
100
100
92
89
85
93
95
100
97
93
89
92
95
98
99
99
99
100
100
100
92
84
76

Low Clouds (% Sky Obscured)

0
0
0
14
18
50
57
50
48
50
47
55
70
81
94
90
83
80
70
57
46
53
60
66

Medium Clouds (% Sky Obscured)

69
73
18
62
64
62
25
68
95
91
91
84
82
81
83
83
89
89
69
35
5
12
11
17

High Clouds (% Sky Obscured)

100
100
100
84
68
56
63
86
100
76
57
35
30
28
24
55
68
76
100
100
100
89
27
72

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
2
5
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

34
35
37
40
40
39
38
37
36
37
34
34
34
37
37
39
38
31
33
35
39
46
53
58

Pressure (mb)

1027
1027
1028
1027
1027
1027
1027
1027
1028
1028
1027
1028
1028
1027
1027
1027
1026
1025
1024
1023
1022
1021
1021
1021

Ozone (du)

312
313
314
315
317
317
317
315
315
315
316
316
316
316
315
315
315
314
315
316
316
316
317
318

Monday 21

Waning Crescent 35%

03:30

13:46

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 OK
15 OK
16 OK
17 OK
18 OK
19 Good

Sun - Rise: 06:11, Set: 19:47, Transit: 12:59. Moon - Rise: 03:30, Set: 13:46. Civil Dark: 20:15 - 05:43. Nautical Dark: 20:49 - 05:08. Astro Dark: 21:26 - 04:31

Total Clouds (% Sky Obscured)

72
68
66
76
91
90
99
98
98
98
99
99
94
88
83
67
58
45
34
23
14
27
40
10

Low Clouds (% Sky Obscured)

46
26
6
22
38
54
62
70
78
82
87
91
63
35
6
11
17
16
17
18
14
27
36
10

Medium Clouds (% Sky Obscured)

32
41
56
45
67
59
44
38
35
25
13
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

66
42
66
56
15
19
81
81
79
81
28
26
19
14
14
4
4
0
3
3
0
2
3
9

ISS Passover

Visibility (miles)

9
9
8
6
6
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
Very Light Rain
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 (%)

7
30
46
56
58
50
25
23
22
21
17
10
20
15
9
7
5
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0.3
0.3
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

14
14
13
12
12
12
12
12
12
12
13
13
14
16
17
19
20
21
22
22
23
23
22
21

Feels Like (°C)

11
11
11
11
11
12
13
13
12
12
13
13
13
14
15
16
16
18
18
20
20
19
19
19

Dew Point (°C)

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

Relative Humidity (%)

62
68
77
86
92
93
96
96
96
96
96
92
90
79
71
63
54
47
40
37
36
33
37
42

Pressure (mb)

1021
1021
1020
1019
1019
1018
1018
1018
1017
1017
1017
1018
1018
1018
1018
1018
1018
1018
1018
1017
1017
1017
1017
1018

Ozone (du)

318
319
320
322
323
324
324
326
327
328
330
334
335
336
337
338
337
336
335
336
337
337
338
339

Tuesday 22

Waning Crescent 24%

03:58

14:59

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

Sun - Rise: 06:10, Set: 19:48, Transit: 12:59. Moon - Rise: 03:58, Set: 14:59. Civil Dark: 20:16 - 05:41. Nautical Dark: 20:50 - 05:07. Astro Dark: 21:27 - 04:30

Total Clouds (% Sky Obscured)

5
0
5
5
15
20
37
57
86
96
92
89
85
82
75
62
46
47
60
74
89
92
96
100

Low Clouds (% Sky Obscured)

5
0
0
0
0
0
0
0
0
0
0
0
15
30
43
44
45
46
47
50
53
34
8
4

Medium Clouds (% Sky Obscured)

2
0
2
2
2
4
4
7
11
20
28
37
38
38
39
29
15
3
3
2
0
0
0
0

High Clouds (% Sky Obscured)

5
0
5
5
15
20
37
57
67
83
67
35
25
14
12
21
24
26
38
52
56
43
38
33

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
7
11
11
11
15
14
12
15
14
11

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

Chance of Frost

Temperature (°C)

20
19
18
17
16
15
14
14
13
13
13
14
14
16
18
19
21
22
23
24
24
25
23
22

Feels Like (°C)

19
16
17
18
17
16
16
13
12
13
12
12
12
14
15
15
16
17
17
24
23
23
23
23

Dew Point (°C)

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

Relative Humidity (%)

47
47
47
49
50
51
52
54
55
57
55
54
53
50
48
46
45
44
43
43
43
43
47
52

Pressure (mb)

1018
1019
1019
1020
1020
1020
1020
1021
1021
1021
1022
1022
1023
1023
1023
1023
1023
1022
1022
1022
1021
1021
1021
1021

Ozone (du)

339
340
341
341
341
341
340
341
341
341
343
344
345
346
347
349
346
343
341
341
340
340
340
339

Wednesday 23

Waning Crescent 15%

04:23

16:13

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: 06:09, Set: 19:49, Transit: 12:59. Moon - Rise: 04:23, Set: 16:13. Civil Dark: 20:17 - 05:40. Nautical Dark: 20:51 - 05:05. Astro Dark: 21:28 - 04:28

Total Clouds (% Sky Obscured)

89
78
68
62
55
49
65
81
97
98
98
99
99
99
99
99
99
99

Low Clouds (% Sky Obscured)

4
5
10
13
17
23
41
55
71
69
64
66
72
78
84
71
57
43

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
4
6
13
19
21
17
9
8

High Clouds (% Sky Obscured)

45
54
62
55
48
41
41
40
37
53
70
87
74
65
59
91
96
99

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 (%)

11
11
6
7
5
0
1
2
1
3
3
1
3
4
3
17
24
28

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

23
19
20
19
19
18
18
15
15
14
14
14
14
14
15
15
16
16

Dew Point (°C)

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

Relative Humidity (%)

58
59
61
63
65
67
69
68
67
64
63
61
60
56
53
50
50
50

Pressure (mb)

1022
1022
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1022
1022

Ozone (du)

339
339
339
339
338
337
337
336
336
336
336
337
337
337
336
336
336
336

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

Generated: 17/04/25 20:01:34. Forecast: 17/04/25 to 23/04/25. Timezone: UTC-4.00