Clear Outside v1.0 - International Weather Forecasts For Astronomers

Saturday 13

Waning Crescent 25%

02:13

12:49

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:15, Set: 16:37, Transit: 11:56. Moon - Rise: 02:13, Set: 12:49. Civil Dark: 17:07 - 06:45. Nautical Dark: 17:41 - 06:11. Astro Dark: 18:14 - 05:38

Total Clouds (% Sky Obscured)

68
75
81
85
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
81
93
58
61

Low Clouds (% Sky Obscured)

24
19
14
56
61
57
63
84
92
94
97
98
99
100
100
100
100
100
98
35
20
55
58
61

Medium Clouds (% Sky Obscured)

68
75
81
85
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
81
90
12
0

High Clouds (% Sky Obscured)

68
75
81
85
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
50
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
0
0
0
0
0
0
0
0
0
9
9
9
8

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

Precipitation Probability (%)

0
0
0
0
0
1
18
26
33
45
66
91
95
95
95
95
95
95
95
60
20
3
0
11

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.3
0.6
0.9
1.4
1.5
1.7
1.8
1.6
0.9
0.1
0
0
0
0

Wind Speed/Direction (mph)

7
8
8
8
6
4
4
4
3
3
3
3
2
2
1
1
3
7
9
8
9
11
12
12

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-2
-1
-0
0
-0
-1
-2
-2
-2
-2
-2
-3
-2
-1
-1
-2
-3
-5
-6
-6
-7
-8
-8
-7

Dew Point (°C)

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

Relative Humidity (%)

65
64
62
59
57
61
65
68
70
69
71
92
98
100
98
100
100
96
94
94
89
86
87
87

Pressure (mb)

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

Ozone (du)

325
323
320
315
311
312
312
310
311
311
310
310
310
309
308
307
306
308
310
313
320
323
327
334

Sunday 14

Waning Crescent 17%

03:14

13:10

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

Sun - Rise: 07:16, Set: 16:37, Transit: 11:56. Moon - Rise: 03:14, Set: 13:10. Civil Dark: 17:07 - 06:46. Nautical Dark: 17:41 - 06:12. Astro Dark: 18:14 - 05:39

Total Clouds (% Sky Obscured)

43
19
17
60
91
78
57
31
2
35
35
8
0
9
2
1
2
5
4
14
35
39
27
100

Low Clouds (% Sky Obscured)

43
19
15
60
91
78
54
19
1
25
25
6
0
8
2
1
2
3
4
4
4
2
2
2

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
18
12
0
0
0
0
0
0
0
0
0
0
0
0
35
0
3
59

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
8
20
33
14
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
1
2
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 (%)

1
4
2
14
2
1
0
0
2
13
18
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)

13
14
14
14
14
13
12
11
12
12
11
11
12
12
13
12
12
11
11
11
9
10
10
10

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-5
-7
-8
-9
-9
-10
-11
-10
-10
-10
-9
-9
-12
-11
-12
-13
-13
-13
-12
-12
-12
-11
-10
-9

Relative Humidity (%)

82
76
76
74
73
74
73
76
77
80
85
87
75
80
77
77
77
78
80
80
81
83
82
82

Pressure (mb)

1018
1018
1018
1018
1018
1019
1020
1021
1021
1022
1022
1022
1023
1024
1024
1025
1025
1025
1025
1026
1027
1027
1027
1028

Ozone (du)

342
348
357
367
365
361
363
362
360
365
362
363
362
369
372
353
347
341
335
325
312
303
293
292

Monday 15

Waning Crescent 11%

04:15

13:34

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

Sun - Rise: 07:17, 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)

93
100
83
70
94
100
100
95
98
74
80
81
81
58
55
41
21
49
41
52
35
17
1
1

Low Clouds (% Sky Obscured)

2
20
20
41
50
39
53
11
33
0
0
0
0
0
0
0
21
49
41
52
35
17
0
0

Medium Clouds (% Sky Obscured)

77
99
83
70
88
100
100
91
93
72
68
56
52
43
39
29
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

92
100
37
25
20
25
3
30
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
0
2
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
2
14
22
26
9
8
11
3
6
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
9
8
9
8
8
7
7
6
5
5
5
4
5
5
4
4
4
4
5
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-10
-9
-9
-7
-7
-8
-9
-9
-9
-9
-9
-8
-8
-9
-7
-7
-8
-8
-8
-8
-8
-8
-7
-5

Dew Point (°C)

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

Relative Humidity (%)

81
81
82
84
86
87
92
90
90
90
89
90
90
90
90
89
87
87
87
87
87
87
82
81

Pressure (mb)

1027
1025
1025
1024
1024
1023
1023
1023
1023
1022
1022
1021
1021
1021
1021
1021
1021
1021
1022
1022
1023
1024
1025
1025

Ozone (du)

294
289
287
287
290
290
294
297
298
294
296
301
304
307
309
303
297
294
297
297
296
294
292
289

Tuesday 16

Waning Crescent 6%

05:18

14:01

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

Sun - Rise: 07:17, Set: 16:38, Transit: 11:57. Moon - Rise: 05:18, Set: 14:01. Civil Dark: 17:08 - 06:47. Nautical Dark: 17:42 - 06:13. Astro Dark: 18:15 - 05:40

Total Clouds (% Sky Obscured)

1
2
32
72
100
99
98
98
92
78
60
54
66
73
57
39
20
39
65
78
78
87
99
99

Low Clouds (% Sky Obscured)

1
1
1
13
2
2
2
2
3
2
2
2
1
1
1
1
1
14
29
43
45
48
50
52

Medium Clouds (% Sky Obscured)

0
0
1
1
2
12
78
22
42
51
48
8
11
17
13
7
0
0
0
0
7
15
22
14

High Clouds (% Sky Obscured)

0
0
32
67
100
96
92
89
66
43
25
28
46
52
39
29
20
37
63
72
71
54
45
41

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

79
79
78
80
86
87
94
94
96
94
92
89
87
89
87
89
91
89
91
91
89
87
89
89

Pressure (mb)

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

Ozone (du)

285
284
283
282
277
274
271
268
269
269
269
269
269
268
270
270
268
268
269
269
271
273
275
280

Wednesday 17

Waning Crescent 2%

06:19

14:34

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:18, Set: 16:38, Transit: 11:58. Moon - Rise: 06:19, 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)

100
100
86
55
56
44
57
63
80
93
100
100
100
100
90
91
87
86
91
93
96
92
95
82

Low Clouds (% Sky Obscured)

55
57
38
19
0
0
0
0
0
0
0
18
35
53
0
0
0
2
3
3
8
5
1
5

Medium Clouds (% Sky Obscured)

7
14
15
6
8
10
10
9
6
3
5
42
23
36
34
58
85
83
86
93
95
92
90
68

High Clouds (% Sky Obscured)

100
100
29
20
54
39
57
63
79
92
100
100
100
100
90
91
87
86
91
93
83
49
44
48

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
94
93
91
91
93
94
93
94
96
96
94
94
94
91
93
94
94
96
96
94
94
91
88

Pressure (mb)

1017
1016
1016
1016
1016
1017
1017
1018
1019
1020
1020
1020
1021
1021
1021
1021
1021
1021
1022
1022
1023
1023
1023
1023

Ozone (du)

282
287
294
301
303
304
305
305
301
301
298
296
294
293
292
290
288
286
286
286
286
288
291
294

Thursday 18

Waning Crescent 2%

07:17

15:13

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
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad

Sun - Rise: 07:18, Set: 16:38, Transit: 11:58. Moon - Rise: 07:17, Set: 15:13. Civil Dark: 17:09 - 06:48. Nautical Dark: 17:43 - 06:14. Astro Dark: 18:16 - 05:41

Total Clouds (% Sky Obscured)

71
68
80
91
100
100
100
100
100
100
100
100
100
100
100
100
100
91
82
73
49
24
5
14

Low Clouds (% Sky Obscured)

9
12
28
45
61
61
61
61
68
75
82
78
74
69
79
89
100
83
59
35
23
12
0
3

Medium Clouds (% Sky Obscured)

62
58
60
57
49
49
49
50
65
79
94
75
74
97
98
99
100
66
33
0
0
0
0
0

High Clouds (% Sky Obscured)

63
68
80
91
100
100
100
100
100
100
100
100
100
100
100
99
99
90
82
73
49
24
0
3

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

Precipitation Probability (%)

0
0
0
2
3
10
12
12
16
19
19
38
52
65
73
75
74
95
95
95
95
94
54
41

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.3
0.2
1
1.5
2.1
1.5
0.5
0
0

Wind Speed/Direction (mph)

4
5
6
6
6
6
6
7
8
10
11
13
14
15
16
15
15
16
12
11
14
15
17
18

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-1
-1
0
3
3
3
3
3
2
4
4
4
3
3
4
8
8
8
7
8
8
5
4
4

Dew Point (°C)

2
2
3
3
4
4
5
6
6
6
6
6
7
8
10
10
10
11
8
5
3
1
-1
-3

Relative Humidity (%)

88
86
85
88
91
93
94
96
96
93
90
87
87
87
88
88
90
92
81
73
67
59
51
45

Pressure (mb)

1022
1021
1020
1019
1018
1017
1016
1016
1015
1013
1012
1010
1009
1007
1006
1005
1004
1004
1004
1005
1006
1007
1008
1009

Ozone (du)

292
290
289
289
289
289
289
290
290
292
293
295
296
297
299
302
305
308
311
313
316
317
319
320

Friday 19

New Moon 0%

08:08

16:01

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

Sun - Rise: 07:19, Set: 16:39, Transit: 11:59. Moon - Rise: 08:08, Set: 16:01. Civil Dark: 17:09 - 06:48. Nautical Dark: 17:43 - 06:14. Astro Dark: 18:16 - 05:41

Total Clouds (% Sky Obscured)

23
28
21
17
15
15
15
15
12
9
5
19
31
48
43
45
42
51
66
77

Low Clouds (% Sky Obscured)

1
0
4
14
15
15
15
15
12
9
5
11
6
0
0
0
0
2
7
12

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
24
35
46
57
68

High Clouds (% Sky Obscured)

2
3
1
1
0
0
0
0
1
1
0
15
28
31
14
4
2
1
1
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

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
None
None
None

Precipitation Probability (%)

25
0
1
1
1
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

Wind Speed/Direction (mph)

18
18
17
16
16
16
15
15
14
13
12
11
10
10
10
9
8
7
6
4

Chance of Frost

Temperature (°C)

9
9
10
9
8
7
6
4
3
2
1
0
-0
-1
-1
-1
-1
-2
-2
-2

Feels Like (°C)

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

Dew Point (°C)

-3
-3
-3
-3
-3
-3
-5
-6
-7
-7
-8
-8
-8
-8
-9
-9
-9
-9
-9
-9

Relative Humidity (%)

44
41
41
43
44
47
47
48
48
50
52
54
54
56
56
57
57
57
57
57

Pressure (mb)

1010
1010
1010
1012
1013
1014
1016
1018
1020
1021
1022
1023
1024
1025
1026
1026
1027
1028
1029
1029

Ozone (du)

319
319
318
319
320
320
320
320
319
318
316
314
312
310
308
307
305
304
304
304

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

Generated: 13/12/25 11:51:55. Forecast: 13/12/25 to 19/12/25. Timezone: UTC-5.00