Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 14

Waning Crescent 17%

03:14

13:34

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

Sun - Rise: 07:16, Set: 16:37, Transit: 11:57. Moon - Rise: 03:14, Set: 13:34. Civil Dark: 17:07 - 06:46. Nautical Dark: 17:41 - 06:12. Astro Dark: 18:14 - 05:39

Total Clouds (% Sky Obscured)

79
70
62
68
18
20
2
3
3
5
4
5
5
76
19
24
7
41
100
100
100
100
84
86

Low Clouds (% Sky Obscured)

39
31
62
14
12
14
2
3
3
5
4
5
2
3
3
2
2
4
3
30
19
28
31
36

Medium Clouds (% Sky Obscured)

0
0
39
9
3
0
0
0
0
0
0
0
0
3
14
3
7
41
88
100
100
98
76
86

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
2
74
2
22
5
41
100
100
88
85
63
11

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
3

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)

15
14
14
14
14
13
13
13
13
13
12
12
12
10
10
10
10
10
10
10
10
10
9
9

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

73
76
74
75
75
77
77
77
77
77
77
78
80
80
80
81
80
79
79
81
84
81
82
82

Pressure (mb)

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

Ozone (du)

358
356
355
354
345
342
340
345
354
340
333
341
334
324
316
303
295
293
288
286
286
284
286
285

Monday 15

Waning Crescent 11%

04:15

14:01

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

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: 18:14 - 05:39

Total Clouds (% Sky Obscured)

87
97
100
99
70
58
52
50
58
48
40
16
18
2
2
2
0
0
2
35
35
35
87
100

Low Clouds (% Sky Obscured)

30
60
74
62
22
5
4
2
2
1
1
2
2
2
2
2
0
0
2
2
2
2
2
2

Medium Clouds (% Sky Obscured)

87
97
100
95
37
24
20
24
26
21
24
10
10
0
0
0
0
0
0
0
0
0
33
55

High Clouds (% Sky Obscured)

4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
25
20
25
84
100

ISS Passover

Visibility (miles)

1
6
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 (%)

11
1
0
2
4
6
8
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

87
90
89
90
89
89
90
90
92
92
90
90
87
87
87
83
77
75
74
74
75
77
84
87

Pressure (mb)

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

Ozone (du)

288
290
289
289
291
292
300
303
302
305
307
306
304
303
298
293
289
286
283
283
281
278
276
275

Tuesday 16

Waning Crescent 6%

05:18

14:34

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

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)

100
76
32
32
6
19
16
59
27
59
63
61
58
52
71
75
57
42
46
15
25
42
44
31

Low Clouds (% Sky Obscured)

2
1
1
1
1
1
0
42
27
59
63
61
58
52
67
46
47
42
33
0
0
0
3
1

Medium Clouds (% Sky Obscured)

8
6
0
0
0
0
0
0
0
0
0
0
0
0
10
48
32
0
4
15
25
42
44
31

High Clouds (% Sky Obscured)

100
68
32
32
6
19
16
40
3
2
0
0
0
0
0
0
3
2
15
15
2
10
6
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
1
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
4
4
4
4
5
5
5
5
6
6
7
6
6
7
7
7
8
8
8
7
7
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

92
94
92
91
89
91
91
87
87
91
89
91
91
91
89
91
88
88
89
88
86
83
88
86

Pressure (mb)

1022
1022
1022
1022
1022
1021
1020
1020
1019
1019
1018
1018
1017
1017
1017
1017
1017
1017
1016
1015
1015
1015
1015
1016

Ozone (du)

273
272
271
269
269
269
270
270
269
268
266
265
265
267
268
270
270
271
273
276
280
284
285
286

Wednesday 17

Waning Crescent 2%

06:19

15:13

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

Sun - Rise: 07:18, Set: 16:38, Transit: 11:58. Moon - Rise: 06:19, Set: 15:13. Civil Dark: 17:08 - 06:47. Nautical Dark: 17:42 - 06:13. Astro Dark: 18:15 - 05:40

Total Clouds (% Sky Obscured)

20
10
10
2
3
16
22
45
16
24
55
54
50
52
60
71
83
83
85
86
89
93
90
77

Low Clouds (% Sky Obscured)

0
0
0
1
2
2
2
0
0
0
0
0
0
0
0
0
0
14
22
30
42
51
63
62

Medium Clouds (% Sky Obscured)

20
10
0
0
0
0
0
0
0
0
3
36
3
0
17
34
55
55
58
57
64
74
81
67

High Clouds (% Sky Obscured)

5
5
0
0
0
16
22
45
16
20
15
22
38
44
36
32
33
29
43
18
25
45
8
6

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
9

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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

85
88
91
93
91
93
91
91
91
91
89
89
91
91
89
89
88
86
80
88
91
93
96
96

Pressure (mb)

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

Ozone (du)

288
293
297
299
301
299
301
303
306
307
306
300
301
302
302
300
297
295
295
297
297
299
299
299

Thursday 18

Waning Crescent 0%

07:17

16:01

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
11 Bad
12 OK
13 OK
14 OK
15 OK
16 OK

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)

82
76
83
91
98
99
99
100
100
100
100
100
100
100
91
81
72
51
35
14
19
24
27
24

Low Clouds (% Sky Obscured)

62
61
69
76
83
75
66
57
61
66
71
76
81
86
89
81
72
51
35
14
19
24
25
24

Medium Clouds (% Sky Obscured)

52
55
52
76
89
92
84
90
97
98
100
100
100
100
91
81
72
51
31
0
0
0
0
0

High Clouds (% Sky Obscured)

70
70
70
71
76
81
89
100
100
100
100
100
100
100
82
62
43
24
12
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
2
0
0
0
4
4
1
2
6
1
1
4
7
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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Moderate Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None

Precipitation Probability (%)

11
12
17
22
28
32
31
88
95
95
95
95
95
95
95
95
95
89
66
33
28
14
0
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0.5
1.7
1.5
2
1.7
3.2
3.5
3.4
2.2
1.4
0.3
0
0
0
0
0
0

Wind Speed/Direction (mph)

4
5
5
6
8
9
10
11
13
13
15
15
16
20
19
15
14
16
16
16
17
16
16
16

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

100
100
98
98
98
96
98
98
96
95
93
95
93
92
84
78
73
69
65
60
57
56
56
56

Pressure (mb)

1018
1017
1016
1015
1014
1012
1011
1009
1008
1006
1004
1002
1000
1000
1000
1001
1001
1001
1002
1003
1003
1005
1006
1008

Ozone (du)

299
299
299
297
298
301
302
302
302
304
304
304
310
314
316
322
328
333
335
337
338
337
335
334

Friday 19

New Moon 1%

08:08

16:56

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

Sun - Rise: 07:19, Set: 16:39, Transit: 11:59. Moon - Rise: 08:08, Set: 16:56. Civil Dark: 17:09 - 06:48. Nautical Dark: 17:43 - 06:14. Astro Dark: 18:16 - 05:41

Total Clouds (% Sky Obscured)

21
9
7
6
7
7
9
8
15
23
35
25
12
0
0
0
4
19
37
38
37
35
33
50

Low Clouds (% Sky Obscured)

21
9
7
6
7
7
9
6
15
23
35
25
12
0
0
0
0
0
0
0
1
1
0
3

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
1
0
1
1
0
0
0
0
11
22
21
20
21
23
17

High Clouds (% Sky Obscured)

0
0
0
0
0
1
1
2
4
5
6
5
12
0
0
0
4
19
30
20
13
7
1
33

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)

15
14
14
13
13
13
13
13
13
12
11
11
9
8
7
6
6
6
5
5
5
6
6
7

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

1
1
-0
-5
-4
-5
-5
-5
-5
-6
-6
-6
-6
-6
-6
-7
-6
-5
-5
-5
-5
0
-1
-1

Dew Point (°C)

-5
-6
-7
-8
-9
-10
-10
-10
-10
-10
-10
-10
-10
-11
-11
-12
-12
-12
-12
-13
-13
-12
-11
-10

Relative Humidity (%)

55
55
55
53
52
51
52
52
52
53
54
54
53
52
50
47
44
42
39
35
33
35
37
40

Pressure (mb)

1009
1011
1013
1014
1015
1016
1017
1018
1019
1020
1020
1021
1022
1023
1023
1024
1025
1026
1025
1025
1024
1024
1023
1023

Ozone (du)

331
329
327
326
326
325
323
320
318
315
312
309
308
307
306
306
307
307
305
304
302
298
295
291

Saturday 20

Waxing Crescent 3%

08:53

16:56

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

Sun - Rise: 07:19, Set: 16:40, Transit: 12:00. Moon - Rise: 08:53, Set: 16:56. Civil Dark: 17:10 - 06:49. Nautical Dark: 17:44 - 06:15. Astro Dark: 18:17 - 05:42

Total Clouds (% Sky Obscured)

68
86
86
87
88
74
60
47
54
60
64
76
89
100
95
93
93
89
85
80

Low Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
1
1
1
2
6
4
4
4
5
28
51
74

Medium Clouds (% Sky Obscured)

11
5
4
8
12
20
19
18
18
18
19
24
27
29
28
23
16
21
28
35

High Clouds (% Sky Obscured)

67
86
86
87
88
71
43
14
42
60
64
76
89
100
74
52
38
70
61
51

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
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)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

45
50
53
58
63
66
72
79
85
86
89
93
93
93
93
91
90
88
81
77

Pressure (mb)

1023
1023
1023
1023
1022
1022
1021
1020
1019
1018
1017
1016
1016
1016
1015
1015
1015
1014
1013
1011

Ozone (du)

292
293
293
293
293
292
292
291
290
288
287
285
283
280
277
277
276
276
275
275

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

Generated: 14/12/25 17:33:40. Forecast: 14/12/25 to 20/12/25. Timezone: UTC-5.00