Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 45%

12:51

23:44

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

Sun - Rise: 05:50, Set: 20:25, Transit: 13:07. Moon - Rise: 12:51, Set: 23:44. Civil Dark: 20:56 - 05:19. Nautical Dark: 21:35 - 04:40. Astro Dark: 22:19 - 03:56

Total Clouds (% Sky Obscured)

24
20
16
16
2
2
2
2
2
11
13
18
6
0
9
12
4
19
3
47
63
100
100
100

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
11
13
18
6
0
9
12
4
19
0
0
5
25
44
45

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
12
22

High Clouds (% Sky Obscured)

0
0
0
0
1
2
2
2
2
2
1
0
0
0
0
0
0
0
3
47
63
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 (%)

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

Chance of Frost

Temperature (°C)

19
18
16
15
17
19
21
23
25
26
28
29
29
29
29
28
27
25
23
21
21
20
20
20

Feels Like (°C)

20
19
18
16
17
20
22
24
26
28
30
31
30
30
30
29
28
26
25
23
21
20
19
20

Dew Point (°C)

9
9
7
6
7
7
7
6
7
8
8
8
8
10
11
12
13
15
15
14
14
14
14
15

Relative Humidity (%)

53
54
55
54
52
44
38
33
31
30
29
28
27
30
33
35
41
51
58
62
65
68
71
72

Pressure (mb)

1014
1014
1015
1015
1016
1016
1017
1017
1016
1016
1016
1015
1015
1014
1014
1014
1014
1014
1014
1015
1015
1014
1014
1014

Ozone (du)

337
337
338
339
340
341
339
334
333
331
331
330
327
326
326
326
325
326
323
320
319
319
321
325

Tuesday 21

First Quarter 55%

13:55

00:09

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
01 Bad
02 Bad

Sun - Rise: 05:51, Set: 20:24, Transit: 13:07. Moon - Rise: 13:55, Set: 00:09. Civil Dark: 20:55 - 05:20. Nautical Dark: 21:34 - 04:41. Astro Dark: 22:17 - 03:57

Total Clouds (% Sky Obscured)

100
100
100
100
99
98
99
100
100
100
100
99
100
100
100
100
100
100
100
100
100
96
99
86

Low Clouds (% Sky Obscured)

49
32
47
69
80
69
83
72
77
81
81
75
67
61
62
54
32
41
73
86
68
80
71
79

Medium Clouds (% Sky Obscured)

37
72
71
96
64
50
46
28
54
40
21
17
12
44
90
100
100
100
100
70
78
75
66
46

High Clouds (% Sky Obscured)

100
100
100
100
92
55
76
97
99
99
100
83
100
100
100
100
100
92
69
70
100
68
94
65

ISS Passover

Visibility (miles)

9
9
3
2
2
2
9
9
9
9
9
9
9
4
8
2
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
Light Rain
Light Rain
None
None
Light Rain
Light Rain
Moderate Rain
None
Light Rain
Moderate Rain
Ice pellet
Light Rain
Very Light Rain
None
None

Precipitation Probability (%)

2
33
59
49
62
61
30
32
61
95
78
62
63
95
95
95
95
95
95
95
95
88
48
43

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
1.1
0.4
0
0
1
2.1
4.6
0
0.5
3.7
1
1.3
0.3
0
0

Wind Speed/Direction (mph)

5
6
5
5
6
7
8
9
9
9
9
9
8
8
5
11
7
5
6
7
8
7
7
7

Chance of Frost

Temperature (°C)

20
20
20
20
21
22
23
25
26
27
26
27
28
28
27
26
26
25
25
25
24
24
24
24

Feels Like (°C)

21
21
21
23
22
24
25
27
28
29
28
29
30
29
30
27
27
27
27
27
25
25
25
25

Dew Point (°C)

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

Relative Humidity (%)

75
79
89
95
95
95
95
89
86
76
68
64
59
53
54
92
95
94
94
94
94
94
92
92

Pressure (mb)

1013
1013
1013
1012
1012
1012
1011
1011
1010
1010
1010
1009
1008
1007
1005
1006
1006
1006
1006
1007
1007
1006
1006
1005

Ozone (du)

320
320
318
321
322
325
324
324
324
320
320
318
316
315
311
309
311
314
320
321
326
329
329
330

Wednesday 22

Waxing Gibbous 65%

14:58

00:38

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

Sun - Rise: 05:51, Set: 20:23, Transit: 13:07. Moon - Rise: 14:58, Set: 00:38. Civil Dark: 20:54 - 05:20. Nautical Dark: 21:33 - 04:42. Astro Dark: 22:16 - 03:59

Total Clouds (% Sky Obscured)

96
64
64
68
37
29
34
40
52
58
57
29
44
37
35
32
55
33
28
17
19
16
14
9

Low Clouds (% Sky Obscured)

62
56
49
47
37
29
34
40
40
39
41
29
42
37
35
32
53
33
28
17
16
8
0
0

Medium Clouds (% Sky Obscured)

70
8
0
33
4
0
17
0
0
0
0
0
0
0
0
0
0
1
3
4
9
13
14
9

High Clouds (% Sky Obscured)

61
45
55
60
3
0
0
0
2
4
3
3
30
6
5
3
35
3
0
0
3
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
7
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 (%)

18
8
5
3
19
33
17
8
12
1
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
7
7
7
7
9
10
11
12
12
12
14
14
13
12
11
10
7
6
5
5
6
6
6

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

25
25
25
24
25
27
27
27
26
26
26
26
26
25
26
25
25
23
22
22
20
19
18
17

Dew Point (°C)

23
23
22
22
22
21
20
19
17
17
16
15
13
12
12
13
13
13
12
12
11
10
10
10

Relative Humidity (%)

97
95
95
94
91
84
77
67
59
55
49
44
39
38
39
43
48
50
53
57
58
59
60
61

Pressure (mb)

1005
1005
1005
1006
1007
1007
1008
1009
1009
1010
1010
1010
1011
1011
1011
1011
1012
1013
1014
1015
1016
1016
1016
1017

Ozone (du)

332
336
339
341
345
350
350
353
352
352
346
342
339
338
337
337
336
337
336
338
339
340
342
342

Thursday 23

Waxing Gibbous 74%

16:01

01:13

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

Sun - Rise: 05:52, Set: 20:23, Transit: 13:07. Moon - Rise: 16:01, Set: 01:13. Civil Dark: 20:53 - 05:21. Nautical Dark: 21:32 - 04:43. Astro Dark: 22:15 - 04:00

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
3
6
9
8
6
3
2
1
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
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)

5
5
4
4
4
4
5
5
6
5
5
5
5
5
5
5
5
4
2
2
3
2
2
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

10
9
8
9
10
10
9
9
8
7
7
6
6
6
6
6
8
10
10
9
9
9
9
9

Relative Humidity (%)

64
64
63
64
62
55
49
42
37
33
30
27
26
25
26
27
33
43
45
47
52
53
54
54

Pressure (mb)

1017
1018
1018
1018
1019
1020
1020
1021
1021
1021
1020
1020
1020
1019
1019
1020
1020
1020
1020
1021
1021
1021
1021
1021

Ozone (du)

344
345
345
344
345
345
345
343
340
339
338
337
341
346
348
346
345
344
345
345
346
348
349
349

Friday 24

Waxing Gibbous 82%

17:01

01:54

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

Sun - Rise: 05:53, Set: 20:22, Transit: 13:07. Moon - Rise: 17:01, Set: 01:54. Civil Dark: 20:53 - 05:22. Nautical Dark: 21:31 - 04:44. Astro Dark: 22:13 - 04:01

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
20
40
64
40
58
75
64
50
33
36
42
48
45
43
43
50

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
9
19
28
0
0
0
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
15
16
17
17
17
15
12
14
17
17
18
16
13

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
13
26
46
23
50
75
54
29
1
4
7
13
17
20
21
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
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)

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

Chance of Frost

Temperature (°C)

17
16
15
16
17
19
21
23
26
27
28
29
29
29
29
28
27
26
24
23
21
21
20
20

Feels Like (°C)

19
17
17
17
19
20
23
25
27
29
29
29
29
29
29
30
30
30
25
25
24
24
23
23

Dew Point (°C)

8
7
7
8
10
9
10
10
10
9
8
8
8
8
8
9
11
12
12
12
12
13
13
13

Relative Humidity (%)

55
56
57
60
60
53
47
43
37
33
28
26
27
27
27
31
36
42
47
51
57
60
62
65

Pressure (mb)

1021
1021
1021
1022
1022
1022
1022
1022
1022
1021
1021
1020
1019
1018
1018
1018
1018
1018
1019
1019
1019
1019
1019
1019

Ozone (du)

348
349
349
343
337
335
331
328
327
325
325
323
322
321
320
318
317
315
315
315
315
314
314
313

Saturday 25

Waxing Gibbous 89%

17:57

02:43

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

Sun - Rise: 05:54, Set: 20:21, Transit: 13:07. Moon - Rise: 17:57, Set: 02:43. Civil Dark: 20:52 - 05:23. Nautical Dark: 21:30 - 04:45. Astro Dark: 22:12 - 04:03

Total Clouds (% Sky Obscured)

68
90
73
57
42
28
13
0
2
3
5
14
24
37
35
28
22
15
11
3
3
2
0
0

Low Clouds (% Sky Obscured)

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

Medium Clouds (% Sky Obscured)

9
6
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

54
70
61
50
38
24
13
0
1
1
1
14
24
37
32
20
8
8
5
3
2
1
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 (%)

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)

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

Chance of Frost

Temperature (°C)

19
18
18
19
20
21
23
25
27
28
29
30
31
31
31
30
28
27
26
25
24
23
22
21

Feels Like (°C)

19
20
20
20
21
21
25
26
27
27
28
29
34
33
32
32
32
33
25
25
25
24
24
23

Dew Point (°C)

13
13
13
13
13
13
13
13
13
12
11
10
10
10
10
12
14
15
15
15
15
14
15
14

Relative Humidity (%)

67
69
71
68
65
62
54
46
40
35
32
29
28
27
27
32
40
47
50
53
57
59
63
65

Pressure (mb)

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

Ozone (du)

315
316
318
318
318
318
319
319
319
321
323
325
324
324
324
325
325
326
326
326
326
326
326
326

Sunday 26

Waxing Gibbous 94%

18:47

No Set

Sun - Rise: 05:55, Set: 20:20, Transit: 13:07. Moon - Rise: 18:47, Set: No Set. Civil Dark: 20:51 - 05:24. Nautical Dark: 21:29 - 04:46. Astro Dark: 22:11 - 04:04

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: 20/07/26 03:39:12. Forecast: 20/07/26 to 26/07/26. Timezone: UTC-4.00