Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 18

First Quarter 51%

14:34

23:19

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

Sun - Rise: 06:46, Set: 19:04, Transit: 12:55. Moon - Rise: 14:34, Set: 23:19. Civil Dark: 19:31 - 06:19. Nautical Dark: 20:03 - 05:48. Astro Dark: 20:35 - 05:16

Total Clouds (% Sky Obscured)

44
60
86
86
64
88
55
32
41
54
72
85
71
49
30
25
42
91
70
37
36
41
41
35

Low Clouds (% Sky Obscured)

3
2
2
5
19
28
29
28
41
54
72
85
71
49
17
13
14
13
12
11
12
15
19
16

Medium Clouds (% Sky Obscured)

24
33
38
40
36
33
31
0
0
0
19
32
17
0
0
5
12
9
17
15
12
32
35
27

High Clouds (% Sky Obscured)

13
26
25
24
2
20
0
0
2
1
0
0
0
1
2
2
8
35
28
37
36
35
2
2

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)

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

Chance of Frost

Temperature (°C)

23
22
22
24
25
26
27
28
29
29
28
27
26
25
23
22
22
21
20
19
19
18
18
17

Feels Like (°C)

26
25
23
25
26
27
26
29
30
29
27
26
26
25
23
23
21
20
18
18
18
18
17
16

Dew Point (°C)

22
21
20
20
18
17
17
17
17
16
17
17
16
16
14
13
12
11
11
10
9
9
8
7

Relative Humidity (%)

95
95
88
80
67
58
54
51
48
47
50
53
55
57
55
54
52
55
54
55
54
55
54
51

Pressure (mb)

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

Ozone (du)

271
269
270
270
270
269
268
269
270
272
271
271
272
274
275
275
274
273
272
271
270
270
269
270

Saturday 19

Waxing Gibbous 61%

15:21

00:16

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 OK
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 06:47, Set: 19:02, Transit: 12:54. Moon - Rise: 15:21, Set: 00:16. Civil Dark: 19:29 - 06:20. Nautical Dark: 20:01 - 05:49. Astro Dark: 20:33 - 05:17

Total Clouds (% Sky Obscured)

41
45
46
50
70
92
63
71
61
67
63
57
48
98
60
53
56
57
98
97
99
99
100
100

Low Clouds (% Sky Obscured)

15
15
10
10
7
5
3
4
3
4
5
7
7
4
10
18
26
33
13
15
32
52
43
49

Medium Clouds (% Sky Obscured)

23
26
26
21
54
86
45
43
46
52
52
39
48
95
59
51
52
50
43
56
95
58
81
99

High Clouds (% Sky Obscured)

2
1
25
44
21
28
24
32
23
23
10
5
5
42
2
6
4
13
70
81
87
73
88
64

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
1
3
1
1
0
0
3
6
16

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
7
8
9
9
8
7
7
6
6
6
7
8
9
9
8
7
7
6
6
6
6
6
6

Chance of Frost

Temperature (°C)

17
16
17
18
19
20
21
22
23
23
23
23
22
20
19
18
18
18
17
17
17
17
17
17

Feels Like (°C)

15
15
15
16
17
18
18
21
22
22
22
22
21
19
17
18
18
17
17
16
16
16
16
16

Dew Point (°C)

6
5
5
5
5
5
7
6
6
7
7
7
8
10
11
11
12
11
11
12
11
11
12
12

Relative Humidity (%)

49
48
45
43
40
37
40
35
34
34
35
35
41
53
60
63
65
66
67
68
68
67
70
72

Pressure (mb)

1021
1021
1022
1022
1022
1022
1022
1021
1021
1021
1020
1020
1020
1021
1021
1021
1022
1021
1021
1021
1020
1020
1019
1019

Ozone (du)

270
270
271
271
269
268
268
267
267
268
269
269
269
269
270
271
273
273
274
274
274
274
273
272

Sunday 20

Waxing Gibbous 70%

16:02

01:17

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
05 Bad

Sun - Rise: 06:47, Set: 19:01, Transit: 12:54. Moon - Rise: 16:02, Set: 01:17. Civil Dark: 19:27 - 06:21. Nautical Dark: 19:59 - 05:50. Astro Dark: 20:31 - 05:18

Total Clouds (% Sky Obscured)

100
100
98
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
100
100
100

Low Clouds (% Sky Obscured)

97
96
95
94
95
97
94
93
95
92
95
94
94
88
86
84
82
84
88
92
95
98
100
98

Medium Clouds (% Sky Obscured)

99
47
95
80
100
97
86
85
61
100
100
100
98
83
97
97
95
98
90
97
95
52
48
48

High Clouds (% Sky Obscured)

59
62
36
44
73
69
100
100
98
100
85
32
74
100
99
100
88
78
83
75
83
92
100
99

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
3
5
9
9
9
9
2
1
0
0
0
2
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
Light Rain
Very Light Rain
None
None
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
Very Light Rain
Light Rain
Light Rain
Moderate Rain
Light Rain
None
None
None

Precipitation Probability (%)

45
35
28
45
82
82
60
52
85
83
95
95
80
75
67
70
87
95
95
95
95
60
18
18

Precipitation Amount (mm)

0
0
0
0
0.4
0.3
0
0
0.6
0.4
0.9
1
0.4
0.2
0
0
0.2
0.6
1.4
3
0.7
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
18
19
20
20
21
21
22
22
22
21
21
21
21
21
21
21
20
19
19
18
18
17

Feels Like (°C)

16
16
16
17
18
19
20
21
23
23
23
23
24
22
23
23
23
22
22
21
21
19
18
17

Dew Point (°C)

12
12
12
13
14
14
16
16
17
17
18
20
20
20
20
20
20
20
20
19
19
18
17
16

Relative Humidity (%)

70
68
70
70
69
70
75
74
75
74
80
91
94
94
92
92
94
96
98
96
98
96
98
95

Pressure (mb)

1018
1018
1018
1018
1017
1017
1016
1015
1014
1014
1013
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1015
1015
1015

Ozone (du)

273
274
274
273
274
274
273
272
271
271
272
271
272
272
272
272
273
273
273
270
271
272
274
275

Monday 21

Waxing Gibbous 79%

16:36

02:21

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
05 Bad

Sun - Rise: 06:48, Set: 18:59, Transit: 12:54. Moon - Rise: 16:36, Set: 02:21. Civil Dark: 19:26 - 06:22. Nautical Dark: 19:57 - 05:51. Astro Dark: 20:30 - 05:19

Total Clouds (% Sky Obscured)

100
100
100
100
99
97
96
95
88
79
69
80
89
100
100
99
99
99
99
99
99
100
100
100

Low Clouds (% Sky Obscured)

96
92
89
86
83
80
78
80
82
79
69
80
88
93
90
91
90
91
95
96
95
92
90
90

Medium Clouds (% Sky Obscured)

48
63
46
47
90
85
62
73
67
27
57
71
24
30
60
51
79
79
87
95
95
96
96
98

High Clouds (% Sky Obscured)

99
92
95
94
85
86
80
70
52
35
12
40
69
91
96
84
77
62
64
57
71
86
100
93

ISS Passover

Visibility (miles)

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

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

Precipitation Probability (%)

17
10
14
14
16
52
34
41
37
13
20
32
25
14
17
6
26
30
40
55
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1.5
1.3
1.4

Wind Speed/Direction (mph)

7
7
8
8
8
9
8
8
7
7
8
8
7
7
6
6
7
7
8
8
8
8
8
9

Chance of Frost

Temperature (°C)

17
16
16
16
17
17
18
18
19
19
19
19
18
17
16
16
16
16
16
16
16
16
16
16

Feels Like (°C)

16
16
16
16
16
17
17
18
19
19
18
18
17
16
15
15
15
16
16
16
16
16
16
15

Dew Point (°C)

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

Relative Humidity (%)

95
95
92
92
92
90
93
93
95
95
93
95
95
93
95
95
96
98
96
96
98
96
96
98

Pressure (mb)

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

Ozone (du)

276
276
277
277
278
278
278
278
279
280
279
280
281
282
281
280
280
281
281
281
280
279
278
279

Tuesday 22

Waxing Gibbous 87%

17:06

03:26

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
05 Bad

Sun - Rise: 06:49, Set: 18:57, Transit: 12:53. Moon - Rise: 17:06, Set: 03:26. Civil Dark: 19:24 - 06:22. Nautical Dark: 19:56 - 05:52. Astro Dark: 20:28 - 05:20

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
99
99
99
98
97
96
95
95
95
96
97
99
100
100

Low Clouds (% Sky Obscured)

92
94
97
99
100
100
100
100
98
99
99
98
96
95
92
92
93
94
94
94
94
94
94
94

Medium Clouds (% Sky Obscured)

99
100
96
93
91
54
74
53
55
72
90
89
88
88
81
75
68
64
60
59
65
64
59
45

High Clouds (% Sky Obscured)

86
77
85
93
100
100
100
100
89
87
86
86
88
90
87
83
81
72
62
40
56
74
83
89

ISS Passover

Visibility (miles)

3
5
9
9
9
9
7
5
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

Light Rain
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
88
55
43
47
50
40
49
48
44
38
36
32
25
27
29
30
32
31
28
26
26
25
24

Precipitation Amount (mm)

0.9
0.6
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
11
12
12
12
12
12
12
12
13
13
13
12
12
11
11
11
11
11
10
11
11
11
11

Chance of Frost

Temperature (°C)

16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
15
15
15
14
14

Feels Like (°C)

15
15
14
14
14
14
14
14
13
14
15
14
14
14
14
13
14
13
13
13
13
12
12
11

Dew Point (°C)

16
16
15
15
15
14
14
14
14
15
15
14
14
14
14
14
14
14
13
13
13
13
12
12

Relative Humidity (%)

96
96
95
93
93
92
90
90
89
89
89
87
87
86
86
86
86
87
86
86
87
87
87
89

Pressure (mb)

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

Ozone (du)

280
279
280
280
280
282
282
282
281
281
282
282
283
284
285
285
286
286
287
288
290
290
290
290

Wednesday 23

Waxing Gibbous 93%

17:31

04:31

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
05 Bad

Sun - Rise: 06:50, Set: 18:56, Transit: 12:53. Moon - Rise: 17:31, Set: 04:31. Civil Dark: 19:22 - 06:23. Nautical Dark: 19:54 - 05:53. Astro Dark: 20:26 - 05:21

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99
100
100

Low Clouds (% Sky Obscured)

92
90
93
93
96
96
96
96
98
98
98
98
98
99
99
98
98
98
98
98
96
98
97
95

Medium Clouds (% Sky Obscured)

38
29
24
19
19
20
21
28
33
33
34
28
27
25
10
5
5
11
16
26
31
36
46
56

High Clouds (% Sky Obscured)

92
100
78
56
33
48
62
75
84
94
100
97
94
92
80
68
56
36
23
8
8
8
8
32

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

Precipitation Probability (%)

22
19
19
18
15
18
19
15
18
20
7
18
22
16
42
66
80
83
90
90
90
85
71
81

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.4
0.4
0.5
0.5
0.3
0.4

Wind Speed/Direction (mph)

11
11
10
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
10
10
10

Chance of Frost

Temperature (°C)

14
13
13
14
14
15
15
16
17
17
17
17
17
17
17
16
16
16
16
16
16
16
16
16

Feels Like (°C)

11
11
10
10
11
11
12
12
12
14
15
15
15
15
14
14
15
14
14
14
14
14
14
14

Dew Point (°C)

12
12
11
12
12
13
13
13
14
14
14
14
14
14
14
14
14
14
14
14
14
15
15
15

Relative Humidity (%)

89
89
89
87
86
86
85
85
83
83
83
83
83
83
85
85
87
87
89
90
90
92
93
92

Pressure (mb)

1025
1025
1026
1026
1026
1026
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024
1023
1023
1023
1023

Ozone (du)

291
292
293
293
294
295
295
295
295
296
296
297
299
300
301
302
303
304
305
305
306
307
307
308

Thursday 24

Waxing Gibbous 97%

17:54

05:37

Sun - Rise: 06:51, Set: 18:54, Transit: 12:53. Moon - Rise: 17:54, Set: 05:37. Civil Dark: 19:21 - 06:24. Nautical Dark: 19:52 - 05:54. Astro Dark: 20:24 - 05:22

Total Clouds (% Sky Obscured)

Low Clouds (% Sky Obscured)

Medium Clouds (% Sky Obscured)

High Clouds (% Sky Obscured)

ISS Passover

Visibility (miles)

Fog (%)

Precipitation Type

Precipitation Probability (%)

Precipitation Amount (mm)

Wind Speed/Direction (mph)

Chance of Frost

Temperature (°C)

Feels Like (°C)

Dew Point (°C)

Relative Humidity (%)

Pressure (mb)

Ozone (du)

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

Generated: 18/09/26 05:33:01. Forecast: 18/09/26 to 24/09/26. Timezone: UTC-4.00