Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 9

Waning Gibbous 75%

22:00

11:20

03 Bad
04 Bad
05 OK
06 Good
07 Good
08 Good
09 Good
10 Good
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

Sun - Rise: 07:12, Set: 16:36, Transit: 11:54. Moon - Rise: 22:00, Set: 11:20. Civil Dark: 17:06 - 06:41. Nautical Dark: 17:40 - 06:07. Astro Dark: 18:13 - 05:35

Total Clouds (% Sky Obscured)

55
53
35
0
0
0
3
2
76
97
97
61
58
65
91
90
79
68
93
100
100
100
100
97

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
18
23
18
23
34
39
39
2
21
66
79
51
73
48

Medium Clouds (% Sky Obscured)

52
33
2
0
0
0
0
1
76
97
85
19
58
65
44
65
65
13
22
24
82
100
95
96

High Clouds (% Sky Obscured)

7
4
0
0
0
0
2
1
0
0
30
26
0
7
38
61
62
66
89
100
100
100
100
78

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)

4
4
3
2
1
1
1
3
4
6
7
8
8
7
6
7
7
9
10
10
10
11
10
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-23
-23
-24
-22
-23
-23
-22
-22
-22
-21
-18
-15
-13
-12
-10
-9
-8
-8
-7
-5
-5
-4
-4
-4

Relative Humidity (%)

26
26
25
26
25
25
24
21
19
20
25
31
36
41
49
55
58
60
66
72
74
78
78
77

Pressure (mb)

1025
1025
1025
1026
1026
1026
1026
1025
1024
1023
1021
1020
1020
1019
1019
1018
1017
1017
1016
1015
1015
1014
1013
1013

Ozone (du)

344
343
346
358
360
354
360
376
395
404
406
398
386
377
363
361
360
357
355
354
352
349
347
345

Wednesday 10

Waning Gibbous 65%

23:07

11:45

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:12, Set: 16:36, Transit: 11:54. Moon - Rise: 23:07, Set: 11:45. Civil Dark: 17:06 - 06:42. Nautical Dark: 17:40 - 06:08. Astro Dark: 18:13 - 05:35

Total Clouds (% Sky Obscured)

92
94
91
99
100
100
100
100
100
100
100
100
100
100
100
89
98
90
100
72
57
61
65
58

Low Clouds (% Sky Obscured)

75
45
70
65
80
81
73
75
77
79
95
100
100
93
93
76
88
71
66
50
57
58
56
33

Medium Clouds (% Sky Obscured)

78
55
57
82
95
100
100
99
100
100
100
100
100
100
100
84
96
83
65
68
3
3
13
24

High Clouds (% Sky Obscured)

40
61
48
94
100
100
100
93
100
45
48
45
45
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
6
9
9
9
9
9
9
9
9
9
9
7
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
Very Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
1
3
11
25
13
26
58
73
86
95
71
37
19
10
6
3
17
17
16
2
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.6
0.8
0.2
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-1
-1
-1
-1
-1
-0
0
1
3
3
4
4
4
4
4
4
4
4
4
4
4
4
3
3

Feels Like (°C)

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

Dew Point (°C)

-4
-4
-4
-4
-4
-3
-4
-4
-3
-3
-1
-1
-0
-1
-1
-0
0
0
1
1
1
0
-1
-2

Relative Humidity (%)

78
80
81
81
81
80
74
70
65
65
69
72
76
69
75
75
75
75
77
77
82
79
77
73

Pressure (mb)

1012
1011
1010
1009
1008
1007
1005
1004
1003
1000
999
998
997
997
997
997
997
997
997
997
997
998
998
1000

Ozone (du)

347
345
344
339
338
337
337
337
335
332
328
326
329
336
340
342
343
344
346
341
341
340
333
329

Thursday 11

Third Quarter 54%

00:10

12:08

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

Sun - Rise: 07:13, Set: 16:36, Transit: 11:55. Moon - Rise: 00:10, Set: 12:08. Civil Dark: 17:07 - 06:43. Nautical Dark: 17:40 - 06:09. Astro Dark: 18:13 - 05:36

Total Clouds (% Sky Obscured)

40
26
9
56
29
20
61
71
83
100
100
100
60
20
53
2
14
43
36
36
35
34
40
40

Low Clouds (% Sky Obscured)

6
13
1
0
7
0
51
61
68
100
100
95
6
20
53
0
12
24
36
35
34
34
31
23

Medium Clouds (% Sky Obscured)

33
14
8
56
23
15
15
30
53
100
100
100
40
4
4
2
7
13
13
8
7
3
5
40

High Clouds (% Sky Obscured)

0
0
0
0
0
5
28
0
0
0
0
0
0
0
0
1
1
9
1
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
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
Very Light Rain
Snow
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
2
38
50
15
1
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

13
13
12
12
11
10
11
11
12
12
12
12
12
11
12
12
12
12
12
11
11
11
11
11

Chance of Frost

Temperature (°C)

2
1
0
-1
-1
-2
-1
1
1
2
2
1
1
1
0
-1
-1
-2
-2
-2
-2
-3
-3
-3

Feels Like (°C)

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

Dew Point (°C)

-4
-5
-6
-7
-7
-9
-9
-9
-8
-8
-8
-9
-9
-9
-9
-9
-9
-10
-10
-9
-9
-9
-10
-10

Relative Humidity (%)

68
65
65
65
63
58
54
50
51
50
47
47
47
48
52
53
53
53
55
57
58
59
59
60

Pressure (mb)

1001
1002
1003
1004
1005
1006
1007
1008
1007
1007
1006
1006
1007
1008
1008
1009
1010
1011
1011
1011
1012
1012
1013
1014

Ozone (du)

327
319
318
316
319
322
322
326
327
323
322
328
331
331
333
335
335
336
337
336
336
332
329
330

Friday 12

Waning Crescent 44%

01:12

12:28

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

Sun - Rise: 07:14, Set: 16:36, Transit: 11:55. Moon - Rise: 01:12, Set: 12:28. Civil Dark: 17:07 - 06:44. Nautical Dark: 17:41 - 06:10. Astro Dark: 18:14 - 05:37

Total Clouds (% Sky Obscured)

45
59
54
14
74
65
46
52
38
27
43
60
81
72
77
76
82
82
85
86
85
86
87
87

Low Clouds (% Sky Obscured)

18
12
7
2
3
2
2
2
1
1
1
1
1
0
0
0
0
0
0
0
0
0
22
44

Medium Clouds (% Sky Obscured)

45
59
53
9
43
43
42
46
38
22
39
51
70
72
77
76
82
82
81
83
85
85
81
74

High Clouds (% Sky Obscured)

0
0
0
0
2
4
3
4
5
5
30
55
75
72
70
70
47
17
18
3
6
49
4
7

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
2
2

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
9
9
9
10
11
11
11
11
10
9
7
7
5
4
4
3
3
4
3
3
2

Chance of Frost

Temperature (°C)

-3
-3
-3
-3
-4
-3
-2
-1
0
1
2
2
2
1
1
-0
-1
-1
-1
-1
-1
-1
-2
-2

Feels Like (°C)

-8
-8
-8
-8
-7
-8
-8
-6
-5
-4
-2
-2
-1
-2
-2
-2
-2
-3
-4
-4
-5
-5
-5
-5

Dew Point (°C)

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

Relative Humidity (%)

60
61
61
61
63
63
58
53
47
43
41
40
41
44
50
54
55
56
56
56
54
54
54
54

Pressure (mb)

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

Ozone (du)

326
322
320
322
321
320
322
324
324
325
326
328
333
341
348
350
348
347
353
356
356
355
353
351

Saturday 13

Waning Crescent 34%

02:13

12:49

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
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad

Sun - Rise: 07:15, Set: 16:37, Transit: 11:56. Moon - Rise: 02:13, Set: 12:49. Civil Dark: 17:07 - 06:44. Nautical Dark: 17:41 - 06:10. Astro Dark: 18:14 - 05:37

Total Clouds (% Sky Obscured)

88
78
96
98
98
96
98
98
97
98
96
96
93
87
88
85
91
84
89
91
89
87
81
70

Low Clouds (% Sky Obscured)

67
67
67
67
72
77
83
77
72
67
56
62
63
47
29
10
41
47
54
47
41
35
26
23

Medium Clouds (% Sky Obscured)

55
49
44
79
93
81
49
63
59
55
96
90
90
85
85
85
91
84
89
65
75
83
72
53

High Clouds (% Sky Obscured)

70
34
75
70
70
69
74
70
69
47
74
84
93
87
88
85
75
25
15
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
6
3
0
0
0
0
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
None
None
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

1
1
1
0
10
14
17
17
15
12
0
0
0
0
0
0
16
23
28
49
56
64
64
66

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-2
-1
-1
-0
1
3
3
4
4
3
3
2
2
1
0
-1
-1
-2
-2
-2

Feels Like (°C)

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

Dew Point (°C)

-9
-9
-8
-8
-7
-6
-6
-7
-7
-7
-7
-6
-6
-6
-7
-7
-7
-6
-4
-3
-3
-3
-3
-3

Relative Humidity (%)

56
57
61
62
67
70
67
60
55
49
49
49
50
49
50
50
51
60
73
86
87
91
92
92

Pressure (mb)

1020
1020
1019
1019
1019
1020
1020
1020
1020
1019
1019
1015
1015
1016
1017
1017
1018
1018
1019
1019
1019
1019
1019
1019

Ozone (du)

345
340
339
339
335
328
327
324
318
315
314
313
311
310
310
311
311
311
312
313
313
313
313
315

Sunday 14

Waning Crescent 25%

No Rise

13:10

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

Sun - Rise: 07:15, Set: 16:37, Transit: 11:56. Moon - Rise: No Rise, Set: 13:10. Civil Dark: 17:07 - 06:45. Nautical Dark: 17:41 - 06:11. Astro Dark: 18:14 - 05:38

Total Clouds (% Sky Obscured)

45
32
30
27
26
25
24
28
37
41
31
22
9
7
5
2
6
9
12
13
17
20
22
31

Low Clouds (% Sky Obscured)

21
21
22
22
23
23
24
26
29
33
25
15
5
5
4
2
4
7
10
9
9
8
7
6

Medium Clouds (% Sky Obscured)

33
25
15
5
4
2
0
4
5
0
0
0
0
0
0
0
0
0
0
2
4
9
10
10

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
3
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
1
1
4
7
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

Snow
Snow
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

68
62
55
46
37
26
4
5
5
1
5
6
3
3
2
0
1
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.3
0.3
0.2
0.2
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
8
9
10
11
11
12
12
12
12
11
11
10
10
9
8
8
7
7
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

94
96
94
91
89
85
82
79
76
74
72
72
72
72
72
73
73
74
74
76
73
73
71
73

Pressure (mb)

1019
1019
1019
1020
1020
1021
1021
1022
1021
1021
1020
1021
1021
1021
1022
1023
1024
1024
1025
1025
1026
1026
1026
1027

Ozone (du)

317
319
322
324
326
327
329
330
329
328
328
332
336
340
341
342
343
343
343
343
338
333
329
326

Monday 15

Waning Crescent 17%

03:14

13:34

Sun - Rise: 07:16, Set: 16:37, Transit: 11:57. Moon - Rise: 03:14, Set: 13:34. Civil Dark: 17:08 - 06:46. Nautical Dark: 17:42 - 06:12. Astro Dark: 18:14 - 05:39

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 09/12/25 03:12:31. Forecast: 09/12/25 to 15/12/25. Timezone: UTC-5.00