Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 31

Waxing Gibbous 99%

18:15

05:59

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

Sun - Rise: 06:45, Set: 19:25, Transit: 13:05. Moon - Rise: 18:15, Set: 05:59. Civil Dark: 19:52 - 06:18. Nautical Dark: 20:24 - 05:45. Astro Dark: 20:57 - 05:12

Total Clouds (% Sky Obscured)

80
81
83
67
71
71
51
66
36
21
68
69
88
95
99
32
38
86
79
34
15
50
64
93

Low Clouds (% Sky Obscured)

24
81
28
6
29
17
0
0
4
0
0
0
27
36
39
32
33
14
30
0
0
0
0
0

Medium Clouds (% Sky Obscured)

43
81
45
43
40
40
35
40
35
21
0
0
0
0
0
0
0
0
0
0
0
50
64
60

High Clouds (% Sky Obscured)

6
81
70
4
10
23
3
16
3
3
68
69
73
78
82
16
23
67
37
34
15
50
64
64

ISS Passover

Visibility (miles)

9
9
7
6
6
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
Very Light Rain
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
47
10
4
0
0
0
0
0
0
0
0
3
7
5
3
2
0
0
3
8
2

Precipitation Amount (mm)

0
0
0.3
0.3
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
8
9
10
10
11
11
12
13
13
14
14
14
13
13
13
13
13
12
12
13
13

Chance of Frost

Temperature (°C)

17
16
16
15
14
14
14
15
16
18
20
22
24
25
26
26
26
25
24
23
22
21
20
19

Feels Like (°C)

16
14
13
14
13
13
13
13
14
17
19
21
23
22
23
23
23
23
22
20
19
18
16
16

Dew Point (°C)

13
12
12
12
12
11
11
11
11
11
12
13
13
13
13
13
13
13
13
12
12
11
12
12

Relative Humidity (%)

74
75
78
80
84
82
83
79
73
64
58
54
50
48
46
45
44
47
50
51
53
55
61
61

Pressure (mb)

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

Ozone (du)

316
315
317
315
316
318
316
314
313
312
313
312
313
315
319
320
322
323
324
324
324
325
326
326

Wednesday 1

Full Moon 100%

19:19

06:20

01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 OK
11 OK
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

Sun - Rise: 06:43, Set: 19:26, Transit: 13:04. Moon - Rise: 19:19, Set: 06:20. Civil Dark: 19:53 - 06:16. Nautical Dark: 20:25 - 05:44. Astro Dark: 20:59 - 05:10

Total Clouds (% Sky Obscured)

100
100
95
81
86
100
91
41
44
37
36
73
97
92
88
86
58
100
71
100
100
99
100
100

Low Clouds (% Sky Obscured)

1
50
11
28
45
44
46
25
15
1
0
38
62
73
80
55
29
66
33
40
87
68
73
98

Medium Clouds (% Sky Obscured)

99
76
91
81
83
94
79
41
4
37
36
59
17
13
9
19
12
15
25
37
90
56
42
81

High Clouds (% Sky Obscured)

89
99
86
54
68
100
79
40
41
37
16
45
59
36
24
73
58
96
71
100
100
99
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
5
5
9
9
9
9
9
6
9
9
9
9
9
9
2
4
9
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
Very Light Rain
None
None
None
None
None
Very Light Rain
None
None
Very Light Rain
Very Light Rain
None
Very Light Rain
Moderate Rain
Moderate Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

20
6
5
22
44
72
66
23
4
4
6
26
44
38
40
53
52
42
85
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0.3
0.3
0
0
0
0
0
0.2
0
0
0.3
0.2
0
0.3
2.7
3
1.5
1.1
0.8

Wind Speed/Direction (mph)

13
11
11
12
12
12
10
10
10
11
11
11
11
11
10
10
9
6
3
2
3
6
8
6

Chance of Frost

Temperature (°C)

19
18
18
18
17
17
16
17
18
20
23
25
26
26
26
26
26
25
24
22
20
19
18
17

Feels Like (°C)

16
16
17
16
15
15
15
16
17
19
21
23
24
25
25
25
25
26
24
25
20
19
17
17

Dew Point (°C)

12
13
14
13
14
14
15
16
16
16
17
17
16
17
18
17
14
13
14
14
17
17
17
15

Relative Humidity (%)

66
72
78
73
81
85
90
95
89
76
69
62
56
56
59
57
49
46
54
62
84
91
93
92

Pressure (mb)

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

Ozone (du)

326
326
326
327
329
329
330
331
331
330
329
330
329
330
331
333
331
329
328
330
332
333
332
333

Thursday 2

Waning Gibbous 100%

20:22

06:42

01 Bad
02 Bad
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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:42, Set: 19:27, Transit: 13:04. Moon - Rise: 20:22, Set: 06:42. Civil Dark: 19:54 - 06:14. Nautical Dark: 20:26 - 05:42. Astro Dark: 21:00 - 05:09

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
93
94
99
100
97
93
99
100
97

Low Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
96
93
90
90
90
90
90
92
92
92

Medium Clouds (% Sky Obscured)

97
37
81
75
66
61
56
34
36
27
28
23
22
27
30
18
0
0
0
4
4
7
10
13

High Clouds (% Sky Obscured)

100
100
27
95
37
33
32
32
34
5
5
23
25
16
20
14
14
14
15
8
7
9
6
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
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 (%)

77
70
10
8
2
5
7
8
3
0
0
0
0
0
3
0
0
0
0
5
6
7
9
9

Precipitation Amount (mm)

0
0.5
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
8
9
10
10
10
10
10
10
10
9
9
9
9
9
9
10
10
10
10
9
9
8

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

16
15
14
13
11
8
7
7
6
6
6
7
8
8
9
11
12
11
9
7
7
5
5
6

Dew Point (°C)

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

Relative Humidity (%)

93
92
92
92
90
88
87
88
87
85
82
81
80
76
67
61
61
62
67
72
77
81
81
84

Pressure (mb)

1022
1022
1023
1023
1023
1024
1026
1027
1027
1028
1028
1028
1028
1028
1028
1027
1027
1027
1027
1028
1028
1029
1028
1028

Ozone (du)

334
335
333
331
331
333
331
331
330
328
327
325
323
322
324
323
323
322
321
321
321
321
320
320

Friday 3

Waning Gibbous 99%

21:26

07:05

01 Bad
02 Bad
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 OK
17 OK
18 OK
19 OK
20 OK
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:40, Set: 19:28, Transit: 13:04. Moon - Rise: 21:26, Set: 07:05. Civil Dark: 19:55 - 06:13. Nautical Dark: 20:28 - 05:40. Astro Dark: 21:01 - 05:07

Total Clouds (% Sky Obscured)

99
98
100
100
100
99
99
98
95
93
88
67
60
55
41
35
16
9
25
25
30
25
50
73

Low Clouds (% Sky Obscured)

95
97
99
100
99
99
99
98
95
93
87
67
57
53
41
34
16
9
3
0
0
0
15
29

Medium Clouds (% Sky Obscured)

17
14
13
9
6
2
0
0
0
0
0
0
0
0
0
0
0
0
0
10
5
5
17
28

High Clouds (% Sky Obscured)

7
4
4
3
3
3
1
0
0
0
0
0
0
0
0
0
0
0
25
25
30
25
50
73

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

Precipitation Probability (%)

7
6
4
0
1
0
0
0
0
3
10
0
1
3
5
4
8
28
17
15
37
51
56
61

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.3
0.4

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

8
8
8
9
9
9
10
10
12
15
17
19
21
23
23
25
25
24
23
22
20
19
18
17

Feels Like (°C)

6
6
7
6
7
8
9
10
12
14
15
17
20
21
22
23
24
24
22
20
19
18
17
17

Dew Point (°C)

6
6
6
7
7
8
8
9
10
11
11
13
13
13
13
13
14
14
14
14
14
13
14
14

Relative Humidity (%)

85
87
87
87
88
90
91
91
89
80
69
68
59
54
52
47
48
51
56
61
67
69
77
82

Pressure (mb)

1028
1028
1028
1027
1027
1027
1027
1027
1027
1027
1026
1026
1025
1025
1024
1023
1022
1022
1022
1022
1022
1023
1023
1023

Ozone (du)

320
320
321
320
322
323
324
326
328
329
328
328
330
332
332
332
332
332
332
331
331
330
331
333

Saturday 4

Waning Gibbous 95%

22:30

07:31

01 Bad
02 Bad
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
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:39, Set: 19:29, Transit: 13:04. Moon - Rise: 22:30, Set: 07:31. Civil Dark: 19:56 - 06:11. Nautical Dark: 20:29 - 05:39. Astro Dark: 21:02 - 05:05

Total Clouds (% Sky Obscured)

100
95
76
67
62
62
52
99
76
58
95
94
56
55
53
50
52
59
64
63
52
51
64
70

Low Clouds (% Sky Obscured)

44
50
56
62
60
57
52
37
18
0
0
0
0
4
6
10
7
4
0
0
0
1
7
13

Medium Clouds (% Sky Obscured)

34
20
19
16
11
8
5
10
14
20
23
24
26
0
2
0
0
0
0
1
1
1
1
0

High Clouds (% Sky Obscured)

100
93
30
15
22
24
34
99
73
54
89
81
41
51
51
50
52
59
64
51
16
8
0
0

ISS Passover

Visibility (miles)

2
8
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

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 (%)

45
16
0
0
0
0
0
0
0
0
0
0
3
8
15
11
16
17
7
13
16
2
4
3

Precipitation Amount (mm)

0.2
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
5
5
5
5
6
7
7
7
8
9
9
10
11
10
9
9
9
9
10
10

Chance of Frost

Temperature (°C)

17
16
16
15
15
15
15
16
18
20
22
23
25
27
26
27
27
26
24
23
22
21
20
19

Feels Like (°C)

16
16
16
17
17
17
17
17
17
20
23
23
25
27
26
27
27
27
26
26
21
21
21
20

Dew Point (°C)

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

Relative Humidity (%)

89
86
89
92
92
93
95
90
82
75
67
60
53
49
47
46
45
49
53
58
60
62
63
64

Pressure (mb)

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

Ozone (du)

341
344
340
336
333
330
328
325
323
322
320
321
319
318
318
318
317
317
317
317
317
317
317
317

Sunday 5

Waning Gibbous 90%

23:33

08:01

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 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad

Sun - Rise: 06:37, Set: 19:30, Transit: 13:03. Moon - Rise: 23:33, Set: 08:01. Civil Dark: 19:57 - 06:10. Nautical Dark: 20:30 - 05:37. Astro Dark: 21:04 - 05:03

Total Clouds (% Sky Obscured)

71
65
60
62
72
80
89
77
65
54
47
41
34
33
38
39
60
80
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

19
33
47
62
72
80
89
75
61
47
40
32
23
15
11
7
31
66
100
100
100
100
96
96

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
4
36
68
100
100
100
100
99
99

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
8
24
28
33
32
33
37
38
58
76
90
93
92
95
86
78

ISS Passover

Visibility (miles)

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

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
Very Light Rain
Light Rain
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
1
2
20
29
34
76
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.7
1
0.9
1.4
1.1
1
1.1

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

18
18
17
17
17
17
17
17
19
20
22
23
24
26
24
22
20
18
17
15
14
14
13
12

Feels Like (°C)

19
19
15
15
15
15
15
15
15
16
16
17
18
19
23
23
22
21
20
19
11
11
11
12

Dew Point (°C)

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

Relative Humidity (%)

66
67
68
71
73
72
71
70
63
59
53
50
48
45
51
61
71
74
79
85
84
84
84
86

Pressure (mb)

1017
1017
1016
1015
1015
1015
1015
1014
1014
1014
1013
1012
1011
1010
1010
1010
1009
1010
1010
1010
1011
1011
1011
1011

Ozone (du)

317
317
317
317
317
317
316
316
316
315
315
314
314
314
313
311
310
310
310
309
308
307
306
305

Monday 6

Waning Gibbous 84%

00:33

08:37

Sun - Rise: 06:35, Set: 19:31, Transit: 13:03. Moon - Rise: 00:33, Set: 08:37. Civil Dark: 19:58 - 06:08. Nautical Dark: 20:31 - 05:35. Astro Dark: 21:05 - 05:01

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: 31/03/26 01:30:16. Forecast: 31/03/26 to 06/04/26. Timezone: UTC-4.00