Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 14

Waning Crescent 25%

03:14

13:10

04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 OK
15 Bad
16 Bad
17 Bad
18 Bad
19 OK
20 OK
21 Good
22 OK
23 Good
00 Good
01 Good
02 Good
03 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
100
100
100
95
85
62
52
48
23
77
81
49
51
22
16
13
27
6
4
3
3
4

Low Clouds (% Sky Obscured)

100
100
100
85
89
91
85
44
52
48
22
77
81
45
51
16
14
12
27
6
3
1
1
2

Medium Clouds (% Sky Obscured)

100
100
100
100
100
81
8
0
0
0
0
0
0
0
0
9
0
3
3
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
25
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

0
0
0
0
0
1
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

28
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
Snow
Snow
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

87
89
27
95
56
27
6
8
3
2
12
0
9
1
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0.4
0.2
0
0.8
0.1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
6
6
9
7
10
11
12
12
13
14
14
14
13
13
14
14
14
13
13
13
13
13
12

Chance of Frost

Temperature (°C)

0
0
-1
-2
-2
-2
-3
-3
-3
-4
-4
-5
-6
-7
-7
-8
-8
-8
-8
-8
-9
-9
-9
-10

Feels Like (°C)

-2
-3
-7
-6
-6
-7
-8
-8
-7
-9
-10
-10
-12
-13
-12
-14
-13
-13
-13
-14
-14
-14
-14
-14

Dew Point (°C)

0
0
-2
-2
-3
-3
-5
-5
-6
-7
-8
-9
-10
-11
-11
-12
-12
-12
-11
-12
-12
-12
-13
-13

Relative Humidity (%)

100
100
96
94
96
91
84
84
79
79
76
74
74
74
73
72
72
74
77
77
77
75
75
77

Pressure (mb)

1014
1013
1014
1014
1015
1015
1017
1017
1016
1016
1016
1017
1017
1018
1019
1020
1020
1021
1021
1022
1022
1023
1024
1024

Ozone (du)

308
306
307
313
318
322
327
332
343
352
360
361
355
357
356
353
352
349
340
342
345
365
353
335

Monday 15

Waning Crescent 17%

No Rise

13:34

04 Good
05 Good
06 OK
07 OK
08 OK
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

Sun - Rise: 07:16, Set: 16:37, Transit: 11:57. Moon - Rise: No Rise, 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)

4
13
43
18
36
53
96
100
100
100
100
86
98
93
93
95
92
54
52
69
58
56
53
60

Low Clouds (% Sky Obscured)

3
2
3
3
3
3
2
2
36
30
31
33
52
78
63
57
50
3
3
4
3
4
9
2

Medium Clouds (% Sky Obscured)

0
0
0
6
4
13
81
100
100
100
100
86
98
93
91
69
19
22
25
30
34
33
28
58

High Clouds (% Sky Obscured)

0
13
43
10
30
40
44
100
100
100
100
60
54
37
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
4
9
1
2
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
14
5
17
27
12
3
0
0
0
2
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
11
11
10
10
10
10
10
10
10
10
10
9
8
8
8
7
6
5
4
3
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-14
-14
-14
-15
-13
-13
-12
-11
-10
-10
-9
-9
-9
-9
-9
-10
-10
-10
-8
-8
-8
-7
-7
-7

Dew Point (°C)

-13
-13
-13
-13
-12
-11
-10
-9
-8
-7
-6
-6
-6
-6
-6
-7
-7
-7
-7
-8
-7
-7
-7
-7

Relative Humidity (%)

78
78
78
80
81
80
79
79
81
82
82
86
84
89
92
90
90
90
90
89
90
92
92
90

Pressure (mb)

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

Ozone (du)

336
335
328
322
309
298
294
289
289
287
285
285
285
285
287
289
291
291
295
302
305
306
310
309

Tuesday 16

Waning Crescent 11%

04:15

14:01

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

Sun - Rise: 07:17, Set: 16:38, Transit: 11:57. Moon - Rise: 04:15, 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)

62
26
2
27
31
1
10
21
31
43
44
62
64
89
100
62
41
36
48
44
75
55
38
8

Low Clouds (% Sky Obscured)

21
23
1
26
27
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

35
0
0
0
0
0
0
1
24
40
43
58
55
50
97
48
21
23
11
9
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
1
3
1
8
21
31
35
41
47
52
79
98
46
29
10
27
22
75
53
29
5

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)

3
3
3
4
4
4
5
6
5
5
5
5
4
3
3
4
4
4
5
4
5
4
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
85
85
85
85
79
78
78
76
77
78
84
87
94
94
94
92
91
89
91
91
91
91
92

Pressure (mb)

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

Ozone (du)

306
300
295
291
290
285
283
281
280
279
278
277
275
274
271
269
270
270
269
268
268
266
265
265

Wednesday 17

Waning Crescent 6%

05:18

14:34

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

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)

19
23
34
42
48
49
25
51
13
80
37
94
97
58
66
73
79
100
73
53
27
30
34
15

Low Clouds (% Sky Obscured)

12
23
34
42
40
39
24
12
0
0
0
0
0
0
0
1
1
0
0
0
0
2
4
6

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
3
0
19
37
60
79
15
5
26
45
70
50
29
1
1
1
0

High Clouds (% Sky Obscured)

4
0
0
0
0
0
0
4
3
14
9
25
50
52
66
73
79
100
72
53
27
30
34
15

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
1
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
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
5
5
6
6
7
8
8
8
8
8
8
8
7
9
9
8
8
8
7
6
5
2
2

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

91
91
91
91
89
86
88
89
88
83
83
83
86
86
86
86
88
79
73
73
74
80
86
84

Pressure (mb)

1018
1017
1017
1017
1016
1016
1016
1015
1014
1013
1014
1014
1015
1016
1017
1019
1020
1021
1022
1023
1024
1025
1025
1026

Ozone (du)

266
267
267
268
269
271
273
275
276
283
288
292
294
295
296
298
299
301
304
307
309
306
303
302

Thursday 18

Waning Crescent 2%

06:19

15:13

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

11
5
6
21
29
35
39
79
90
93
95
96
97
99
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

4
2
0
0
0
0
10
20
30
35
39
44
57
70
83
74
65
56
69
83
92
90
84
77

Medium Clouds (% Sky Obscured)

0
0
0
11
22
30
29
29
36
38
33
79
47
47
80
87
93
100
99
95
92
93
94
94

High Clouds (% Sky Obscured)

11
5
6
21
29
19
11
76
72
71
76
75
80
90
100
96
93
90
98
99
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
6
4
3
3
2
4
7

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
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
6
24
42
57
72
82
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
0.3
0.4
0.7
1.2
1.7
2.1

Wind Speed/Direction (mph)

2
3
4
4
4
4
5
5
6
6
6
6
7
7
7
6
8
10
12
13
14
16
16
16

Chance of Frost

Temperature (°C)

-2
-2
-2
-2
-1
0
1
2
3
4
4
5
5
5
5
6
7
8
9
10
11
12
12
12

Feels Like (°C)

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

Dew Point (°C)

-4
-5
-5
-5
-5
-5
-5
-5
-4
-1
1
2
3
4
4
4
5
7
8
9
9
10
11
11

Relative Humidity (%)

83
79
79
77
75
70
63
59
61
68
77
83
88
90
91
91
91
93
95
93
90
89
90
90

Pressure (mb)

1026
1026
1027
1027
1028
1028
1028
1027
1026
1024
1022
1022
1020
1019
1018
1018
1016
1014
1012
1010
1009
1007
1005
1004

Ozone (du)

303
301
298
297
295
293
291
292
290
290
290
290
290
289
289
289
290
291
291
293
295
296
298
301

Friday 19

New Moon 0%

07:17

16:01

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

Sun - Rise: 07:18, Set: 16:39, Transit: 11:59. Moon - Rise: 07:17, 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)

100
100
100
90
79
70
59
48
35
27
16
3
0
0
0
0
0
2
7
24
27
34
39
44

Low Clouds (% Sky Obscured)

84
92
100
71
43
17
21
28
29
19
10
0
0
0
0
0
0
2
2
2
2
7
9
11

Medium Clouds (% Sky Obscured)

94
95
91
72
69
68
45
22
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

94
87
82
56
31
5
5
6
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
1

ISS Passover

Visibility (miles)

9
7
5
3
3
4
4
6
8
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

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

Precipitation Probability (%)

95
95
95
95
95
90
66
41
6
5
5
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

2.1
2.2
2.4
2.1
1.4
0.6
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

17
12
9
9
11
13
16
17
17
18
18
17
17
16
16
15
15
14
13
12
12
11
10
10

Chance of Frost

Temperature (°C)

13
12
11
9
9
8
8
7
5
4
3
2
0
-0
-1
-2
-2
-2
-2
-2
-2
-2
-2
-2

Feels Like (°C)

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

Dew Point (°C)

11
9
7
4
4
3
3
0
-3
-5
-7
-8
-9
-10
-11
-11
-11
-11
-10
-10
-10
-10
-10
-10

Relative Humidity (%)

92
84
77
70
70
71
71
64
57
51
50
50
48
48
48
48
50
50
51
53
53
54
55
56

Pressure (mb)

1002
1003
1003
1003
1004
1006
1007
1007
1008
1009
1010
1012
1013
1015
1016
1018
1019
1020
1020
1021
1022
1023
1024
1025

Ozone (du)

303
310
318
326
330
334
338
342
345
348
345
341
338
336
335
334
331
329
327
324
322
320
317
315

Saturday 20

Waxing Crescent 1%

08:08

16:56

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

Sun - Rise: 07:19, Set: 16:39, Transit: 11:59. Moon - Rise: 08:08, Set: 16:56. Civil Dark: 17:10 - 06:48. Nautical Dark: 17:44 - 06:14. Astro Dark: 18:17 - 05:41

Total Clouds (% Sky Obscured)

57
72
84
78
71
61
44
29
15
31
47
61
58
58
57
69
80
91
92
94
95

Low Clouds (% Sky Obscured)

14
15
4
5
6
5
3
2
1
0
0
0
0
0
0
1
2
3
3
4
4

Medium Clouds (% Sky Obscured)

23
46
68
63
55
48
29
16
3
14
24
35
37
39
42
41
37
29
49
68
91

High Clouds (% Sky Obscured)

0
0
0
1
1
1
1
1
0
30
47
61
58
58
57
69
80
88
47
40
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

Fog (%)

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

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
2
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

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-10
-10
-10
-10
-10
-10
-10
-10
-11
-11
-11
-11
-11
-9
-9
-7
-7
-7
-6
-5
-3

Relative Humidity (%)

57
58
59
60
57
54
51
47
43
39
40
41
42
47
52
59
60
59
60
66
73

Pressure (mb)

1026
1027
1027
1028
1029
1029
1030
1029
1029
1028
1028
1027
1027
1027
1027
1027
1026
1026
1025
1024
1023

Ozone (du)

313
312
310
309
308
307
306
305
304
303
301
299
297
296
296
295
295
296
296
295
294

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

Generated: 14/12/25 04:29:24. Forecast: 14/12/25 to 20/12/25. Timezone: UTC-5.00