Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 12

Waning Crescent 44%

01:12

12:28

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

14
11
10
65
29
31
25
48
16
12
3
0
0
0
0
0
0
0
29
100
100
81
100
100

Low Clouds (% Sky Obscured)

4
5
3
3
3
12
13
7
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2

Medium Clouds (% Sky Obscured)

0
3
10
19
7
15
16
48
9
8
2
0
0
0
0
0
0
0
0
100
100
66
100
100

High Clouds (% Sky Obscured)

3
4
4
35
15
0
0
0
0
0
0
0
0
0
0
0
0
0
24
100
52
25
8
65

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

60
60
60
60
56
51
45
40
38
37
38
42
48
51
53
55
54
54
52
50
47
47
47
47

Pressure (mb)

1017
1018
1018
1019
1020
1020
1020
1019
1019
1019
1019
1020
1020
1021
1022
1022
1022
1022
1022
1021
1021
1021
1021
1021

Ozone (du)

316
311
313
316
320
317
318
321
326
331
338
337
336
339
340
341
342
340
342
347
358
365
363
361

Saturday 13

Waning Crescent 34%

02:13

12:49

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: 07:15, 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)

94
100
97
99
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

24
24
48
47
51
41
47
18
43
42
49
58
55
49
51
57
87
96
99
100
100
100
100
100

Medium Clouds (% Sky Obscured)

93
92
65
97
82
19
78
83
98
94
99
88
100
100
100
100
100
100
100
100
100
100
100
100

High Clouds (% Sky Obscured)

66
99
83
53
43
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
0
0
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
Snow
Snow
Snow
Snow
Snow
Snow
Snow

Precipitation Probability (%)

0
0
1
0
0
0
0
0
0
0
0
0
2
2
6
11
28
47
63
87
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.2
0.2
0.5
0.7
0.8
0.8
0.5

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-9
-8
-6
-4
-3
-2
-2
-1
-1
-1
-1
-2
-2
-2
-2
-2
0
0
-1
-3
-2
-3
-3

Relative Humidity (%)

52
58
64
71
77
75
76
73
73
72
71
76
78
77
77
76
77
94
94
91
84
91
89
87

Pressure (mb)

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

Ozone (du)

360
355
349
342
338
335
331
328
326
324
319
315
313
315
315
317
316
319
321
321
319
320
321
326

Sunday 14

Waning Crescent 25%

03:14

13:10

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

Sun - Rise: 07:15, Set: 16:37, Transit: 11:56. Moon - Rise: 03:14, 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)

100
100
97
80
30
46
52
68
20
39
68
54
69
53
14
29
48
50
20
1
1
2
1
1

Low Clouds (% Sky Obscured)

99
66
34
20
13
35
49
68
9
24
61
54
69
37
14
29
48
50
20
0
0
0
0
0

Medium Clouds (% Sky Obscured)

100
100
93
38
18
18
0
0
0
0
0
0
22
13
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
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)

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

Snow
Snow
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
49
18
6
3
1
2
2
2
1
0
0
2
14
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.2
0.1
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
9
8
9
11
13
13
15
15
15
14
13
13
14
13
13
13
13
13
13
12
12
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-6
-6
-7
-8
-8
-8
-9
-9
-8
-10
-10
-10
-9
-10
-12
-11
-11
-11
-11
-11
-11
-11
-11
-11

Dew Point (°C)

-4
-7
-8
-7
-8
-9
-11
-13
-14
-14
-14
-14
-14
-12
-14
-14
-15
-14
-14
-13
-13
-14
-13
-13

Relative Humidity (%)

80
69
68
72
68
60
54
46
43
44
44
46
48
59
52
53
51
55
57
59
59
58
61
60

Pressure (mb)

1017
1017
1018
1018
1019
1019
1019
1018
1018
1018
1019
1020
1020
1021
1022
1023
1023
1024
1024
1024
1025
1025
1026
1026

Ozone (du)

331
332
335
334
335
339
348
357
362
370
370
368
367
365
363
361
367
360
361
373
382
364
347
344

Monday 15

Waning Crescent 17%

04:15

13:34

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

Sun - Rise: 07:16, Set: 16:37, Transit: 11:57. Moon - Rise: 04:15, 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)

1
9
12
15
12
32
69
100
75
90
82
86
92
100
100
100
100
92
83
67
63
32
32
29

Low Clouds (% Sky Obscured)

0
0
0
2
2
5
8
10
10
24
51
43
25
20
22
19
15
7
3
1
7
7
11
7

Medium Clouds (% Sky Obscured)

0
0
12
15
8
18
55
61
65
77
76
73
82
77
82
91
100
89
83
67
50
26
0
0

High Clouds (% Sky Obscured)

0
5
1
2
3
32
67
100
64
40
16
37
75
100
54
27
0
0
0
0
0
10
32
29

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
1
4
12
5
3
0
7
10
13
11
7
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
10
10
10
11
12
11
12
12
11
9
8
7
7
7
8
7
7
6
5
5
5
5
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-11
-11
-13
-12
-11
-9
-8
-8
-8
-7
-6
-6
-6
-7
-8
-8
-7
-7
-7
-6
-5
-6
-6
-8

Dew Point (°C)

-13
-13
-13
-13
-12
-12
-13
-13
-12
-13
-12
-10
-10
-8
-8
-8
-8
-8
-8
-9
-9
-9
-9
-9

Relative Humidity (%)

61
62
63
62
58
54
48
45
45
43
47
52
55
64
69
65
68
67
67
65
64
63
64
63

Pressure (mb)

1026
1027
1028
1028
1029
1029
1028
1027
1026
1025
1025
1024
1024
1024
1024
1024
1023
1022
1022
1021
1021
1021
1021
1021

Ozone (du)

340
330
315
309
300
290
285
283
282
284
285
285
287
288
291
296
297
296
296
296
294
294
295
295

Tuesday 16

Waning Crescent 11%

No Rise

14:01

05 Good
06 OK
07 OK
08 OK
09 OK
10 OK
11 Bad
12 Bad
13 OK
14 OK
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: 07:17, Set: 16:38, Transit: 11:57. Moon - Rise: No Rise, Set: 14:01. Civil Dark: 17:08 - 06:46. Nautical Dark: 17:42 - 06:12. Astro Dark: 18:15 - 05:39

Total Clouds (% Sky Obscured)

18
20
20
20
25
46
60
78
31
30
71
100
100
100
98
95
93
87
82
76
84
92
100
97

Low Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
11
15
33
61
97
76

Medium Clouds (% Sky Obscured)

0
0
0
8
20
37
48
49
22
30
55
60
60
65
85
95
93
87
75
65
49
30
12
11

High Clouds (% Sky Obscured)

18
20
20
20
25
46
55
78
19
25
71
100
100
100
90
82
73
74
67
63
73
86
100
91

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
1
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
6
6
7
8
7
7
7
6
5
4
3
3
3
3
3
3
3
3
4
4
4
5
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
56
58
58
58
55
52
49
48
47
48
54
59
61
62
63
64
67
67
67
67
66
64
63

Pressure (mb)

1021
1022
1023
1024
1024
1025
1024
1024
1023
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024
1023
1023
1023
1022
1022

Ozone (du)

295
298
290
285
284
283
283
281
276
273
272
271
269
268
267
266
265
264
265
265
265
265
265
265

Wednesday 17

Waning Crescent 6%

05:18

14:34

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: 07:17, Set: 16:38, Transit: 11:58. Moon - Rise: 05:18, Set: 14:34. Civil Dark: 17:08 - 06:47. Nautical Dark: 17:42 - 06:13. Astro Dark: 18:15 - 05:40

Total Clouds (% Sky Obscured)

95
95
96
99
96
88
80
78
88
96
100
100
100
100
85
69
56
74
92
100
99
99
99
99

Low Clouds (% Sky Obscured)

54
32
22
11
0
10
21
30
22
13
0
29
59
88
59
29
5
5
5
5
16
22
28
32

Medium Clouds (% Sky Obscured)

10
18
42
36
25
18
11
4
6
18
54
75
88
100
76
51
27
18
21
49
67
77
82
85

High Clouds (% Sky Obscured)

81
72
78
85
91
82
76
78
88
96
100
71
49
57
69
69
56
74
92
100
93
85
65
37

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
1
3
1
4
3
0
8

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

64
66
67
67
67
66
65
65
66
68
73
77
77
77
77
79
80
82
85
88
91
91
93
93

Pressure (mb)

1022
1021
1021
1021
1021
1021
1019
1018
1017
1017
1017
1017
1017
1018
1019
1019
1018
1018
1018
1018
1018
1018
1018
1018

Ozone (du)

265
266
267
271
275
279
280
281
282
283
284
285
284
283
282
281
280
278
278
277
277
277
276
276

Thursday 18

Waning Crescent 2%

06:19

15:13

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

Sun - Rise: 07:18, Set: 16:38, Transit: 11:58. Moon - Rise: 06:19, Set: 15:13. Civil Dark: 17:09 - 06:47. Nautical Dark: 17:43 - 06:13. Astro Dark: 18:16 - 05:40

Total Clouds (% Sky Obscured)

100
100
100
100
100
98
96
94
96
98
100
100
100
100
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

47
41
29
16
4
8
11
10
27
49
71
63
58
49
57
65
72
72
72
72

Medium Clouds (% Sky Obscured)

89
92
92
92
92
82
73
64
66
67
68
79
90
100
99
97
96
97
98
99

High Clouds (% Sky Obscured)

19
0
37
68
100
98
96
94
96
95
93
95
98
100
100
100
100
92
82
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

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

Precipitation Probability (%)

12
13
16
15
11
11
10
8
7
7
5
12
20
28
32
39
42
50
59
68

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
2
2
2
2
2
2
3
3
9
9
8
8
8
9
7
7
7
8
7

Dew Point (°C)

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

Relative Humidity (%)

93
94
94
91
88
85
77
72
65
67
72
76
78
81
84
87
88
90
91
91

Pressure (mb)

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

Ozone (du)

275
274
272
273
274
275
275
275
275
276
276
277
277
276
276
277
277
277
278
279

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

Generated: 12/12/25 05:06:02. Forecast: 12/12/25 to 18/12/25. Timezone: UTC-5.00