Clear Outside v1.0 - International Weather Forecasts For Astronomers

Thursday 25

Waxing Crescent 30%

10:53

22:22

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

Sun - Rise: 07:21, Set: 16:42, Transit: 12:02. Moon - Rise: 10:53, Set: 22:22. Civil Dark: 17:12 - 06:51. Nautical Dark: 17:46 - 06:17. Astro Dark: 18:19 - 05:44

Total Clouds (% Sky Obscured)

74
81
65
89
73
90
36
26
14
59
27
15
2
2
2
12
7
49
66
81
76
100
100
100

Low Clouds (% Sky Obscured)

47
17
0
0
0
0
2
3
3
3
0
0
0
0
0
0
0
0
0
1
0
10
1
2

Medium Clouds (% Sky Obscured)

45
8
0
2
0
2
21
25
5
21
1
0
0
0
0
9
3
23
54
67
71
89
100
100

High Clouds (% Sky Obscured)

71
64
65
87
68
89
36
12
9
35
16
10
2
2
2
2
6
13
55
36
54
100
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 (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-1
1
-0
-1
-1
-2
-2
-4
-6
-7
-8
-11
-12
-14
-16
-17
-17
-18
-18
-19
-20
-20
-20
-20

Relative Humidity (%)

64
62
55
51
49
49
55
55
53
53
50
45
42
37
34
33
32
32
32
30
28
26
25
25

Pressure (mb)

1015
1013
1012
1012
1013
1014
1016
1017
1019
1020
1021
1021
1022
1022
1023
1023
1024
1024
1024
1024
1024
1024
1024
1024

Ozone (du)

312
314
313
311
316
319
323
325
324
323
321
317
312
307
304
299
294
294
291
290
291
290
290
291

Friday 26

Waxing Crescent 41%

11:15

23:29

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: 07:22, Set: 16:43, Transit: 12:02. Moon - Rise: 11:15, Set: 23:29. Civil Dark: 17:13 - 06:51. Nautical Dark: 17:47 - 06:17. Astro Dark: 18:20 - 05:44

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98

Low Clouds (% Sky Obscured)

2
37
5
50
85
88
79
94
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
98

Medium Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
46
48
33
37
25
11
16
9
1
1
13
14
0
0

High Clouds (% Sky Obscured)

96
100
100
0
0
60
65
100
40
40
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
4
2
0
3
1
0
0
0
0
0
0
0
0
0
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
2
3
2
23
2
0
0

Precipitation Type

None
None
None
None
Snow
Snow
Snow
Frozen rai
Frozen rai
Frozen rai
Ice pellet
Frozen rai
Snow
Snow
Frozen rai
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

1
6
15
18
81
95
95
95
95
95
95
95
69
77
61
37
17
25
17
20
30
29
31
31

Precipitation Amount (mm)

0
0
0
0
0.6
0.7
1.5
1.9
3.3
2.2
0.8
1.1
0.3
0.5
0.2
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-21
-21
-20
-19
-18
-14
-10
-8
-5
-3
-3
-2
-2
-1
-1
-1
-1
-0
-1
-1
-1
-1
-1
-2

Relative Humidity (%)

22
21
21
22
25
35
52
62
81
94
96
98
98
98
100
100
98
100
100
98
100
100
98
96

Pressure (mb)

1023
1022
1021
1020
1019
1018
1018
1016
1015
1016
1015
1014
1013
1012
1012
1012
1012
1012
1013
1014
1015
1016
1017
1019

Ozone (du)

293
292
292
292
292
296
298
300
309
312
323
320
321
321
317
314
315
316
316
318
321
321
322
321

Saturday 27

First Quarter 52%

11:38

00:38

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

Sun - Rise: 07:22, Set: 16:43, Transit: 12:03. Moon - Rise: 11:38, Set: 00:38. Civil Dark: 17:14 - 06:52. Nautical Dark: 17:48 - 06:18. Astro Dark: 18:21 - 05:45

Total Clouds (% Sky Obscured)

99
100
100
100
100
93
85
82
79
80
49
49
74
66
57
33
65
55
69
92
98
100
100
99

Low Clouds (% Sky Obscured)

99
100
100
100
100
93
84
78
74
60
48
31
0
0
0
0
0
1
1
1
1
1
0
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
17
29
20
36
13
69
30
72
92
91
78

High Clouds (% Sky Obscured)

0
1
0
0
1
0
5
2
38
33
3
34
74
56
55
21
24
40
50
90
96
100
99
97

ISS Passover

Visibility (miles)

0
0
0
0
1
1
2
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 (%)

29
27
25
19
9
6
4
1
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

96
96
96
96
96
96
94
96
96
96
98
98
96
96
96
96
96
96
96
96
96
94
91
92

Pressure (mb)

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

Ozone (du)

319
319
318
317
315
313
311
309
306
306
308
305
302
302
302
301
300
297
298
299
300
302
304
305

Sunday 28

Waxing Gibbous 63%

12:02

01:50

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: 07:22, Set: 16:44, Transit: 12:03. Moon - Rise: 12:02, Set: 01:50. Civil Dark: 17:14 - 06:52. Nautical Dark: 17:48 - 06:18. Astro Dark: 18:21 - 05:45

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
95
81

Low Clouds (% Sky Obscured)

8
14
30
54
69
76
81
87
92
94
97
98
99
97
91
94
94
95
95
95
88
82
76
50

Medium Clouds (% Sky Obscured)

91
92
95
96
99
98
98
97
97
98
100
100
98
97
86
73
78
83
80
94
82
85
79
50

High Clouds (% Sky Obscured)

100
100
100
100
100
99
97
94
91
99
99
100
100
95
100
100
100
100
100
100
100
98
57
81

ISS Passover

Visibility (miles)

9
1
0
0
0
0
0
0
0
1
2
4
1
1
1
1
1
1
1
1
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
Light Rain
None
None
None
None
None
None
None
None
None
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

0
0
0
0
0
2
5
7
29
36
66
54
56
53
38
23
7
8
13
19
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0.4
0
0
0
0
0
0
0
0
0
0.7
1.1
1.2
0.8

Wind Speed/Direction (mph)

3
3
3
4
3
2
2
2
3
3
4
4
6
7
6
7
8
10
10
11
12
12
13
14

Chance of Frost

Temperature (°C)

0
1
1
1
1
1
1
1
1
1
1
1
2
2
3
3
4
5
6
6
7
8
9
11

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
100
100
100
100
100
100
100
98
100
100
100
100
100
98
98
98
98
98
98
98
96
93

Pressure (mb)

1023
1022
1021
1021
1020
1020
1019
1018
1018
1017
1015
1014
1012
1011
1009
1008
1006
1004
1002
1001
999
999
998
997

Ozone (du)

306
303
301
299
296
296
296
297
297
295
293
292
291
290
289
288
285
283
280
279
279
278
279
280

Monday 29

Waxing Gibbous 74%

12:30

03:06

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

Sun - Rise: 07:22, Set: 16:45, Transit: 12:03. Moon - Rise: 12:30, Set: 03:06. Civil Dark: 17:15 - 06:52. Nautical Dark: 17:49 - 06:18. Astro Dark: 18:22 - 05:45

Total Clouds (% Sky Obscured)

61
42
59
77
95
83
72
70
71
29
13
54
12
11
15
21
26
21
15
10
25
40
55
65

Low Clouds (% Sky Obscured)

25
0
29
57
86
68
50
32
33
29
13
37
12
11
15
21
23
21
15
10
25
35
42
45

Medium Clouds (% Sky Obscured)

38
15
28
37
57
55
53
45
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

61
42
59
73
75
70
72
67
63
6
0
0
0
0
0
0
0
0
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
7
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

Very Light Rain
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 (%)

72
17
22
18
51
30
2
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
4

Precipitation Amount (mm)

0.3
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
15
16
18
17
17
16
16
17
17
17
16
17
18
18
17
17
16
16
15
16
16
16

Chance of Frost

Temperature (°C)

12
12
12
12
11
8
6
5
3
2
1
1
0
-1
-1
-1
-2
-2
-3
-3
-3
-3
-2
-2

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

90
92
90
86
71
81
72
68
67
65
64
64
62
63
56
55
54
53
50
49
48
48
48
47

Pressure (mb)

997
996
995
995
997
998
999
1000
1001
1002
1002
1003
1003
1003
1004
1004
1005
1006
1007
1008
1009
1010
1010
1011

Ozone (du)

280
279
279
278
281
282
286
291
299
303
313
322
336
336
336
335
335
334
338
342
346
345
344
343

Tuesday 30

Waxing Gibbous 84%

13:04

04:26

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

Sun - Rise: 07:22, Set: 16:46, Transit: 12:04. Moon - Rise: 13:04, Set: 04:26. Civil Dark: 17:16 - 06:52. Nautical Dark: 17:50 - 06:18. Astro Dark: 18:23 - 05:45

Total Clouds (% Sky Obscured)

69
67
46
27
14
11
5
0
4
8
12
21
42
64
65
92
95
98
95
93
76
58
42
32

Low Clouds (% Sky Obscured)

48
50
32
21
14
11
5
0
0
0
0
0
1
3
12
26
52
54
46
29
30
32
34
24

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
21
42
64
65
92
95
95
91
86
68
51
35
27

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
4
8
12
18
26
33
35
37
37
25
13
1
1
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
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

5
2
1
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)

16
16
17
16
15
14
13
12
12
11
10
10
9
8
8
8
8
8
8
8
8
9
10
11

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
39
36
38
39
39
42
43
46
48
49
51
50
50
50
49
49
49
48
47
46
44
41
40

Pressure (mb)

1011
1011
1011
1012
1012
1013
1013
1014
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1016
1017
1017

Ozone (du)

342
341
340
341
343
345
342
340
337
342
346
350
347
344
341
342
342
343
341
340
338
335
331
327

Wednesday 31

Waxing Gibbous 92%

13:46

05:44

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
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 07:22, Set: 16:47, Transit: 12:04. Moon - Rise: 13:46, Set: 05:44. Civil Dark: 17:17 - 06:52. Nautical Dark: 17:51 - 06:18. Astro Dark: 18:23 - 05:46

Total Clouds (% Sky Obscured)

28
20
40
64
80
84
89
94
81
68
55
68
77
94
89
96
95
93
98
99

Low Clouds (% Sky Obscured)

17
11
10
8
1
13
24
38
35
25
22
23
25
25
27
34
46
38
43
38

Medium Clouds (% Sky Obscured)

17
10
17
25
32
47
62
77
57
37
17
33
50
67
78
89
95
93
98
99

High Clouds (% Sky Obscured)

0
0
33
64
80
67
33
10
16
23
27
50
63
60
35
15
15
11
8
4

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 (%)

0
0
0
0
0
0
0
0
0
0
0
1
1
0
5
8
9
7
5
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

39
40
40
40
41
42
45
48
51
53
55
56
56
54
53
54
56
56
58
59

Pressure (mb)

1016
1015
1014
1014
1014
1014
1014
1015
1015
1015
1016
1016
1016
1016
1016
1017
1017
1018
1018
1019

Ozone (du)

325
323
321
321
321
321
317
314
310
312
313
315
313
311
308
306
305
303
304
305

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

Generated: 25/12/25 11:12:19. Forecast: 25/12/25 to 31/12/25. Timezone: UTC-5.00