Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 6

Waning Gibbous 84%

00:33

08:37

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

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)

64
56
53
17
20
0
2
5
2
5
76
47
50
74
46
64
61
75
88
69
93
41
43
44

Low Clouds (% Sky Obscured)

26
25
22
12
15
0
1
4
2
5
68
47
37
30
2
4
29
60
64
35
41
21
14
22

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
26
18
14
26
30
50
48
31
35
30
23
19
15
15

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
Light Rain
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
2
3
6
2
1
8
26
51
7
9
2
2
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.5
0
0
0
0
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

57
56
58
59
55
49
42
38
35
35
36
35
37
42
47
50
52
52
54
55
56
56
63
70

Pressure (mb)

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

Ozone (du)

341
340
340
341
340
336
336
338
343
347
346
345
343
343
342
345
350
353
353
352
351
354
354
353

Tuesday 7

Waning Gibbous 76%

01:28

09:20

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

Sun - Rise: 06:34, Set: 19:32, Transit: 13:03. Moon - Rise: 01:28, Set: 09:20. Civil Dark: 19:59 - 06:06. Nautical Dark: 20:32 - 05:33. Astro Dark: 21:06 - 04:59

Total Clouds (% Sky Obscured)

2
43
40
12
21
20
16
27
67
72
61
49
41
23
17
11
0
0
0
0
0
0
0
0

Low Clouds (% Sky Obscured)

2
43
40
11
21
20
16
25
65
60
47
14
25
21
15
11
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
11
9
8
15
8
6
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 (%)

5
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)

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

Chance of Frost

Temperature (°C)

6
6
5
5
5
6
7
8
9
10
11
11
11
10
9
8
7
5
4
3
2
1
1
0

Feels Like (°C)

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

Dew Point (°C)

2
2
0
-2
-1
-2
-3
-5
-6
-7
-9
-9
-9
-10
-11
-11
-10
-11
-11
-11
-11
-11
-12
-13

Relative Humidity (%)

75
76
71
62
66
58
49
39
33
28
25
24
25
24
23
25
29
30
32
36
38
39
38
37

Pressure (mb)

1019
1020
1021
1022
1023
1024
1024
1025
1025
1025
1025
1025
1026
1027
1028
1029
1030
1032
1033
1034
1034
1035
1035
1035

Ozone (du)

355
357
358
357
360
364
367
367
368
367
368
368
370
373
374
373
375
379
389
394
391
390
390
389

Wednesday 8

Waning Gibbous 67%

02:16

10:11

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 OK
17 OK
18 OK
19 Good
20 Good
21 Good
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good

Sun - Rise: 06:32, Set: 19:33, Transit: 13:03. Moon - Rise: 02:16, Set: 10:11. Civil Dark: 20:00 - 06:05. Nautical Dark: 20:33 - 05:32. Astro Dark: 21:07 - 04:58

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
0
0
4
35
43
40
0
0
0
0
0
1
1
1
1

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
4
35
43
40
0
0
0
0
0
0
0
0
0

Medium 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

High Clouds (% Sky Obscured)

0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1

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)

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

Chance of Frost

Temperature (°C)

-0
-1
-1
-1
0
2
4
6
7
9
10
11
11
11
11
10
7
6
5
4
3
3
2
2

Feels Like (°C)

-4
-3
-4
-4
-3
-1
1
4
6
7
8
9
10
9
8
7
4
3
2
1
1
1
0
1

Dew Point (°C)

-13
-13
-14
-14
-13
-13
-13
-12
-12
-12
-12
-11
-10
-8
-7
-6
-5
-5
-6
-7
-6
-6
-5
-5

Relative Humidity (%)

38
37
38
38
36
32
28
26
23
21
20
20
22
24
28
34
40
45
46
47
50
54
58
60

Pressure (mb)

1036
1036
1037
1038
1039
1039
1040
1040
1039
1039
1038
1037
1037
1036
1036
1037
1038
1039
1039
1039
1040
1040
1040
1039

Ozone (du)

389
387
386
383
379
378
374
370
366
363
364
368
369
368
365
362
361
361
363
363
364
364
366
374

Thursday 9

Waning Gibbous 57%

02:56

11:09

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

Sun - Rise: 06:31, Set: 19:34, Transit: 13:02. Moon - Rise: 02:56, Set: 11:09. Civil Dark: 20:01 - 06:03. Nautical Dark: 20:34 - 05:30. Astro Dark: 21:09 - 04:56

Total Clouds (% Sky Obscured)

4
11
14
17
21
33
53
68
52
21
50
61
76
63
43
25
25
20
21
25
20
20
21
15

Low Clouds (% Sky Obscured)

2
8
13
17
19
26
33
25
21
11
9
9
8
6
3
0
0
0
0
0
0
0
2
3

Medium Clouds (% Sky Obscured)

0
0
0
0
1
1
2
1
0
0
10
19
31
23
13
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

1
1
1
1
21
33
53
60
40
10
32
44
63
51
42
25
25
20
21
25
20
20
21
15

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

Chance of Frost

Temperature (°C)

2
2
2
2
3
5
7
9
11
12
14
15
15
15
13
12
10
9
8
7
7
7
6
6

Feels Like (°C)

1
1
1
1
2
4
5
7
8
9
12
11
11
11
9
8
7
6
6
5
4
5
4
4

Dew Point (°C)

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

Relative Humidity (%)

63
65
69
70
68
63
55
46
40
35
32
31
33
37
43
49
55
62
65
69
70
74
76
78

Pressure (mb)

1039
1039
1039
1039
1040
1040
1040
1040
1039
1038
1037
1036
1035
1035
1035
1035
1035
1036
1036
1036
1036
1035
1035
1034

Ozone (du)

378
376
376
370
365
363
366
366
370
368
363
361
360
358
355
359
362
362
362
361
358
356
351
349

Friday 10

Third Quarter 47%

03:31

12:11

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

Sun - Rise: 06:29, Set: 19:35, Transit: 13:02. Moon - Rise: 03:31, Set: 12:11. Civil Dark: 20:02 - 06:01. Nautical Dark: 20:36 - 05:28. Astro Dark: 21:10 - 04:54

Total Clouds (% Sky Obscured)

7
16
24
26
23
14
15
13
13
11
17
16
20
24
20
20
18
29
27
27
35
48
50
57

Low Clouds (% Sky Obscured)

5
16
24
26
23
14
15
13
13
11
2
1
0
0
0
0
0
0
0
0
0
0
12
27

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
8
8
12
13
4
5
5
9
27
35
48
50
57

High Clouds (% Sky Obscured)

7
3
0
0
4
1
4
3
7
6
12
11
10
9
7
6
15
29
27
27
35
48
50
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
1
1
3
5
4
7
8
7
25
33

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

Chance of Frost

Temperature (°C)

5
5
5
5
6
9
11
14
16
17
19
20
21
21
20
18
17
16
15
14
13
13
12
12

Feels Like (°C)

4
6
5
6
7
9
12
15
16
17
18
20
20
20
20
20
20
15
15
15
15
15
14
12

Dew Point (°C)

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

Relative Humidity (%)

80
83
83
83
75
67
57
49
43
40
37
37
36
36
42
47
55
57
60
64
65
69
72
75

Pressure (mb)

1034
1034
1034
1034
1034
1034
1034
1033
1032
1031
1030
1026
1026
1025
1025
1025
1025
1025
1025
1025
1025
1025
1024
1024

Ozone (du)

347
349
349
350
347
347
346
343
342
341
342
341
340
340
338
337
336
336
337
338
337
337
336
338

Saturday 11

Waning Crescent 37%

04:00

13:16

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

Sun - Rise: 06:28, Set: 19:36, Transit: 13:02. Moon - Rise: 04:00, Set: 13:16. Civil Dark: 20:04 - 06:00. Nautical Dark: 20:37 - 05:27. Astro Dark: 21:11 - 04:52

Total Clouds (% Sky Obscured)

83
92
88
83
62
41
20
18
13
10
10
9
11
20
29
38
41
43
43
37
29
24
36
40

Low Clouds (% Sky Obscured)

44
41
37
34
29
24
20
18
13
10
10
8
5
2
0
0
1
1
2
6
10
13
24
19

Medium Clouds (% Sky Obscured)

79
77
73
69
46
23
0
0
0
0
0
0
0
0
0
0
2
3
5
6
8
9
12
14

High Clouds (% Sky Obscured)

0
0
0
0
0
0
2
3
4
4
6
7
9
19
27
34
35
31
20
7
2
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 (%)

33
34
27
16
12
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
5

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

Chance of Frost

Temperature (°C)

12
11
11
12
12
13
14
16
18
19
21
21
21
21
20
19
18
17
16
15
15
15
15
14

Feels Like (°C)

12
13
12
12
12
12
12
12
13
14
15
21
21
20
20
20
20
16
16
16
16
16
16
14

Dew Point (°C)

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

Relative Humidity (%)

76
79
77
76
72
64
57
49
46
44
41
41
42
42
46
50
54
58
62
66
65
64
66
67

Pressure (mb)

1024
1024
1025
1026
1026
1026
1026
1026
1026
1026
1025
1025
1024
1024
1024
1024
1025
1025
1025
1026
1026
1026
1026
1027

Ozone (du)

339
340
341
342
343
340
337
334
335
336
337
337
336
336
337
337
338
338
339
339
338
337
335
334

Sunday 12

Waning Crescent 28%

04:00

14:23

Sun - Rise: 06:26, Set: 19:37, Transit: 13:01. Moon - Rise: 04:00, Set: 14:23. Civil Dark: 20:05 - 05:58. Nautical Dark: 20:38 - 05:25. Astro Dark: 21:13 - 04:50

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: 06/04/26 03:39:43. Forecast: 06/04/26 to 12/04/26. Timezone: UTC-4.00