Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 7

Waning Gibbous 84%

19:33

10:09

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

Sun - Rise: 07:10, Set: 16:36, Transit: 11:53. Moon - Rise: 19:33, Set: 10:09. Civil Dark: 17:06 - 06:40. Nautical Dark: 17:40 - 06:06. Astro Dark: 18:13 - 05:33

Total Clouds (% Sky Obscured)

69
67
55
56
73
78
82
93
99
72
69
34
25
49
29
28
20
3
23
35
44
86
100
100

Low Clouds (% Sky Obscured)

2
3
3
3
3
5
3
8
6
12
17
23
21
31
19
25
16
3
3
3
1
8
7
0

Medium Clouds (% Sky Obscured)

44
37
40
42
44
30
54
79
97
56
51
7
0
32
14
0
0
0
4
0
0
0
38
33

High Clouds (% Sky Obscured)

37
33
53
54
54
58
59
82
30
3
2
1
0
0
0
0
0
1
23
35
44
86
100
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
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
3
3
3
3
3
3
5
6
6
7
6
4
4
4
4
5
5
6
8
9
9
9
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-5
-6
-6
-6
-5
-5
-5
-5
-6
-6
-6
-5
-5
-5
-4
-4
-4
-4
-4
-5
-5
-5
-5
-9

Relative Humidity (%)

74
74
74
71
67
62
57
53
47
45
46
50
57
62
65
66
70
74
73
70
71
70
70
57

Pressure (mb)

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

Ozone (du)

305
306
305
304
306
308
310
313
313
313
315
314
316
312
311
312
314
314
316
314
313
316
317
319

Monday 8

Waning Gibbous 75%

20:48

10:48

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 OK
23 OK
00 OK
01 Good
02 Good
03 Good
04 Good

Sun - Rise: 07:11, Set: 16:36, Transit: 11:53. Moon - Rise: 20:48, Set: 10:48. Civil Dark: 17:06 - 06:41. Nautical Dark: 17:40 - 06:07. Astro Dark: 18:13 - 05:34

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
76
84
46
35
43
17
2
0
0

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)

34
84
70
95
97
100
100
100
100
100
100
100
100
100
97
76
84
46
7
9
3
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
97
98
100
96
45
45
35
35
24
9
1
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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-12
-12
-16
-18
-18
-19
-20
-21
-22
-22
-22
-23
-24
-25
-24
-25
-25
-25
-25
-24
-23
-22
-22

Relative Humidity (%)

53
49
47
38
31
30
27
24
21
20
19
19
19
18
18
19
19
19
19
20
22
24
26
27

Pressure (mb)

1022
1023
1024
1025
1026
1026
1026
1025
1025
1025
1025
1025
1026
1026
1027
1027
1027
1027
1026
1026
1025
1025
1025
1024

Ozone (du)

319
327
326
322
324
328
326
324
324
323
323
320
319
323
325
325
325
327
330
339
346
349
351
346

Tuesday 9

Waning Gibbous 65%

22:00

11:20

05 Good
06 Good
07 OK
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

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)

0
8
37
79
94
100
51
51
70
84
62
88
55
80
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
8
30
41
11
12
26
31
47
17
0
27
0
0
0
44
58
54
65
65
69
72
75
76

Medium Clouds (% Sky Obscured)

0
0
2
37
86
93
37
20
44
73
60
80
55
48
100
100
100
100
100
100
94
93
90
91

High Clouds (% Sky Obscured)

0
0
6
40
7
25
30
30
30
0
0
0
11
65
99
100
100
100
100
74
81
91
100
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
0
0
1

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)

2
2
2
2
2
3
4
5
7
8
8
7
8
9
10
11
10
11
10
9
9
8
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-21
-21
-21
-21
-19
-17
-15
-13
-11
-9
-8
-7
-7
-6
-5
-4
-4
-3
-3
-3
-2
-3
-2
-2

Relative Humidity (%)

27
28
28
29
30
33
36
39
43
48
50
55
60
62
66
71
75
77
80
83
84
84
86
89

Pressure (mb)

1024
1025
1025
1024
1024
1023
1022
1021
1019
1018
1017
1016
1015
1015
1014
1014
1013
1013
1012
1012
1011
1011
1010
1009

Ozone (du)

340
339
341
343
362
380
394
402
404
398
380
369
362
356
353
354
351
351
350
347
342
341
337
336

Wednesday 10

Waning Gibbous 65%

23:07

11:45

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 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 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)

100
100
100
99
100
100
100
100
100
100
100
95
88
81
66
49
29
59
78
100
100
100
100
99

Low Clouds (% Sky Obscured)

80
79
75
77
83
41
67
81
85
83
83
66
39
20
20
23
8
16
23
31
18
9
0
10

Medium Clouds (% Sky Obscured)

94
100
96
73
85
91
96
100
100
100
100
95
88
81
58
49
29
27
58
90
90
95
95
89

High Clouds (% Sky Obscured)

100
100
100
99
100
100
100
100
100
100
100
72
50
25
20
20
25
50
77
100
100
100
100
88

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
5
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
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
4
7
8
5
19
28
34
47
56
67
89
51
13
9
9
14
12
10
12
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.7
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

89
89
89
89
81
73
68
65
59
59
59
62
78
80
79
79
80
80
78
79
72
66
68
69

Pressure (mb)

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

Ozone (du)

338
338
342
345
344
341
337
336
333
329
327
327
325
324
328
331
330
326
323
316
305
301
299
302

Thursday 11

Third Quarter 54%

00:10

12:08

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
03 Bad
04 Bad

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)

95
82
80
80
75
65
62
51
100
98
86
100
100
100
99
98
98
97
93
92
86
78
57
57

Low Clouds (% Sky Obscured)

19
29
19
10
0
14
28
43
49
56
62
67
73
78
72
66
60
43
34
30
38
30
22
22

Medium Clouds (% Sky Obscured)

86
82
80
80
75
65
55
51
99
95
77
80
98
99
86
71
57
57
66
68
52
32
15
12

High Clouds (% Sky Obscured)

63
5
10
20
25
30
25
33
100
50
31
93
47
80
84
87
85
94
92
92
61
29
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
8
6
5
6
8
9
6
3
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
None
None
Snow
Snow
Snow

Precipitation Probability (%)

0
0
0
0
0
0
0
0
2
4
5
11
14
17
37
34
29
27
27
28
39
50
60
73

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0.2
0.4

Wind Speed/Direction (mph)

7
6
6
6
7
7
8
8
8
7
6
6
4
3
2
2
2
2
3
5
6
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

71
73
74
69
58
50
46
45
45
47
47
49
54
55
55
56
56
57
58
59
60
71
84
98

Pressure (mb)

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

Ozone (du)

299
300
305
309
309
308
305
302
299
298
295
294
295
293
291
292
293
294
297
300
303
304
306
307

Friday 12

Waning Crescent 44%

01:12

12:28

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

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)

57
92
97
100
98
97
89
83
70
52
24
17
23
28
36
44
49
32
16
7
17
21
18
22

Low Clouds (% Sky Obscured)

22
22
15
7
5
10
29
25
19
17
11
13
15
17
12
6
0
0
0
0
1
1
1
5

Medium Clouds (% Sky Obscured)

9
10
21
13
3
2
2
1
2
2
1
1
1
2
2
3
3
2
1
0
5
3
0
0

High Clouds (% Sky Obscured)

0
0
2
4
5
5
6
0
0
0
0
3
6
5
9
8
11
13
6
2
14
21
18
22

ISS Passover

Visibility (miles)

0
0
0
0
0
0
1
3
4
6
8
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 (%)

75
68
55
43
33
30
26
22
17
15
15
12
9
2
2
1
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.4
0.2
0.1
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
7
7
7
6
6
7
8
9
9
9
8
8
7
7
6
5
5
4
4
3
3
3
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

98
98
98
98
96
96
89
83
77
77
77
77
75
77
77
75
75
77
72
69
67
65
65
67

Pressure (mb)

1012
1012
1013
1014
1014
1015
1015
1015
1014
1015
1015
1016
1017
1017
1018
1018
1018
1018
1018
1018
1019
1019
1018
1018

Ozone (du)

310
312
315
317
319
321
323
326
329
331
332
334
335
336
337
338
339
340
342
344
346
344
343
341

Saturday 13

Waning Crescent 34%

02:13

12:49

05 OK
06 OK
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 OK
22 OK
23 OK
00 Good

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)

27
35
57
78
100
100
100
100
100
100
100
98
94
89
72
57
41
33
25
18

Low Clouds (% Sky Obscured)

18
27
50
69
70
64
59
52
49
57
67
66
67
65
54
43
33
33
25
18

Medium Clouds (% Sky Obscured)

0
0
0
5
10
20
20
20
20
19
19
16
8
0
0
1
1
2
2
3

High Clouds (% Sky Obscured)

27
35
36
18
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
6
3
0
0
0
1
0
0
0
3
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

Precipitation Type

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

Precipitation Probability (%)

0
0
9
17
25
31
34
38
42
45
48
44
37
24
20
12
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0.1
0.2
0.2
0.2
0.3
0.2
0.1
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

2
2
3
3
4
5
5
4
5
5
7
8
8
8
7
7
8
8
8
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-3
-3
-4
-4
-4
-4
-4
-4
-4
-3
-3
-3
-3
-4
-4
-6
-7
-7
-7
-6

Dew Point (°C)

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

Relative Humidity (%)

67
67
67
74
79
86
84
83
81
84
86
89
84
81
76
76
73
72
72
75

Pressure (mb)

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

Ozone (du)

346
351
356
357
357
358
356
355
353
361
368
376
379
382
384
384
384
384
383
383

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

Generated: 07/12/25 05:58:06. Forecast: 07/12/25 to 13/12/25. Timezone: UTC-5.00