Clear Outside v1.0 - International Weather Forecasts For Astronomers

Monday 20

Waxing Crescent 16%

09:06

00:14

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

Sun - Rise: 06:13, Set: 19:45, Transit: 13:00. Moon - Rise: 09:06, Set: 00:14. Civil Dark: 20:13 - 05:45. Nautical Dark: 20:48 - 05:10. Astro Dark: 21:24 - 04:34

Total Clouds (% Sky Obscured)

81
73
73
78
79
74
54
44
81
7
3
2
2
2
0
0
0
0
0
2
3
2
4
4

Low Clouds (% Sky Obscured)

73
73
56
75
65
65
11
7
64
6
3
2
2
2
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

37
0
38
25
32
32
32
28
38
0
0
0
0
0
0
0
0
0
0
0
0
0
3
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
2
3
3

ISS Passover

Visibility (miles)

9
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 (%)

8
0
18
2
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
11
9
10
12
13
12
9
7
8
8
7
7
6
6
5
5
5
5
5
5
5
4
4

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

2
-0
0
-5
-9
-9
-10
-10
-8
-7
-7
-7
-7
-8
-9
-11
-12
-11
-11
-12
-12
-13
-13
-14

Relative Humidity (%)

60
50
52
33
24
23
25
25
31
36
41
45
45
44
43
39
38
39
41
38
32
27
23
20

Pressure (mb)

1023
1022
1022
1022
1021
1022
1023
1023
1024
1026
1027
1027
1027
1028
1028
1028
1028
1028
1029
1030
1030
1030
1030
1030

Ozone (du)

410
411
412
412
412
413
410
404
411
425
425
417
415
414
414
413
412
412
413
411
400
393
391
389

Tuesday 21

Waxing Crescent 26%

10:16

01:16

12 Good
13 Good
14 Good
15 Good
16 OK
17 OK
18 Bad
19 OK
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

Sun - Rise: 06:12, Set: 19:46, Transit: 12:59. Moon - Rise: 10:16, Set: 01:16. Civil Dark: 20:14 - 05:43. Nautical Dark: 20:49 - 05:09. Astro Dark: 21:25 - 04:32

Total Clouds (% Sky Obscured)

4
7
5
3
27
38
65
47
79
90
82
77
54
95
100
100
100
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

0
0
3
0
0
0
39
2
23
25
22
17
4
30
30
8
50
72
75
77
85
81
93
100

Medium Clouds (% Sky Obscured)

3
7
5
3
14
19
18
24
27
29
31
39
32
40
60
100
100
100
100
100
100
100
100
81

High Clouds (% Sky Obscured)

4
3
0
0
0
0
0
0
0
0
5
0
2
2
98
59
95
100
100
100
100
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
3
3
2
5
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
Light Rain
Light Rain
Light Rain
Light Rain
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
7
6
18
8
25
39
37
20
84
95
95
95
95
65

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.8
1.5
1.9
2.4
0.9
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-14
-13
-13
-11
-10
-9
-7
-6
-6
-6
-6
-3
-2
-1
-0
-0
1
2
2
6
7
7
7
7

Relative Humidity (%)

18
17
17
18
20
21
25
28
31
32
35
45
53
58
58
57
63
66
68
85
91
91
90
88

Pressure (mb)

1029
1028
1027
1025
1024
1024
1024
1023
1024
1024
1024
1024
1023
1022
1021
1020
1020
1019
1019
1018
1017
1018
1017
1017

Ozone (du)

384
385
385
384
380
376
376
378
377
375
376
375
374
373
376
375
375
374
370
369
373
372
371
373

Wednesday 22

Waxing Crescent 37%

11:30

02:06

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

Sun - Rise: 06:10, Set: 19:47, Transit: 12:59. Moon - Rise: 11:30, Set: 02:06. Civil Dark: 20:15 - 05:42. Nautical Dark: 20:50 - 05:07. Astro Dark: 21:27 - 04:30

Total Clouds (% Sky Obscured)

100
100
100
98
78
73
69
47
23
8
49
55
65
56
60
55
48
47
52
49
44
34
33
38

Low Clouds (% Sky Obscured)

100
100
100
96
67
63
69
40
0
0
49
55
65
56
60
55
48
47
52
49
44
34
33
34

Medium Clouds (% Sky Obscured)

36
44
23
30
32
12
0
0
17
8
37
21
7
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

16
20
1
1
1
1
2
1
0
0
0
0
0
0
0
0
0
0
0
4
3
2
1
7

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 (%)

30
10
1
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
5
5
4
3
2
2
2
2
2
2
3
3
3
3
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

9
10
10
11
12
13
14
13
12
11
11
11
10
10
10
9
9
8
8
8
10
13
15
17

Feels Like (°C)

7
7
9
9
11
13
13
13
12
13
13
12
12
11
11
10
9
9
9
9
10
13
15
17

Dew Point (°C)

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

Relative Humidity (%)

88
85
85
84
81
78
80
86
89
93
95
96
96
96
96
96
96
96
95
90
77
62
51
45

Pressure (mb)

1017
1016
1016
1015
1015
1015
1015
1015
1015
1016
1016
1016
1016
1016
1015
1015
1016
1016
1016
1016
1017
1017
1017
1017

Ozone (du)

372
372
374
376
376
371
370
367
365
365
366
367
366
364
363
365
367
367
367
367
367
368
368
366

Thursday 23

First Quarter 49%

No Rise

02:44

12 OK
13 Bad
14 OK
15 Good
16 Good
17 Good
18 Good
19 Good
20 Good
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

Sun - Rise: 06:09, Set: 19:48, Transit: 12:59. Moon - Rise: No Rise, Set: 02:44. Civil Dark: 20:17 - 05:40. Nautical Dark: 20:51 - 05:05. Astro Dark: 21:28 - 04:28

Total Clouds (% Sky Obscured)

42
50
31
18
6
8
7
16
15
67
55
56
55
59
62
64
87
88
85
84
87
93
97
86

Low Clouds (% Sky Obscured)

33
31
22
13
4
2
0
2
3
2
2
2
0
0
2
3
19
14
7
5
5
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
2
3
9
9
3
2
7
13
59
54
43
46
27
18
7
17
28
38
39

High Clouds (% Sky Obscured)

13
21
13
7
0
1
2
3
2
11
15
15
26
26
18
35
47
50
56
52
57
45
39
21

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
1
0
4

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
9
10
10
10
8
6
5
5
5
5
5
5
5
4
3
4
3
4
3
4
5
6

Chance of Frost

Temperature (°C)

19
20
21
22
22
22
21
20
18
17
16
14
14
13
13
12
12
12
12
13
13
14
15
16

Feels Like (°C)

18
18
18
20
19
19
19
19
17
16
13
11
10
10
10
10
11
10
9
10
10
11
11
13

Dew Point (°C)

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

Relative Humidity (%)

41
40
38
37
38
38
38
42
49
48
49
51
50
50
51
54
54
52
49
48
48
47
51
47

Pressure (mb)

1016
1015
1015
1014
1013
1013
1013
1013
1013
1014
1014
1014
1014
1014
1013
1013
1013
1012
1012
1012
1012
1012
1012
1012

Ozone (du)

365
366
366
365
364
364
362
362
361
360
362
363
363
363
363
364
362
362
361
364
365
364
363
362

Friday 24

Waxing Gibbous 60%

12:43

03:15

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:07, Set: 19:49, Transit: 12:59. Moon - Rise: 12:43, Set: 03:15. Civil Dark: 20:18 - 05:39. Nautical Dark: 20:52 - 05:04. Astro Dark: 21:29 - 04:27

Total Clouds (% Sky Obscured)

72
61
58
58
60
61
49
46
43
92
93
94
96
98
98
99
99
99
99
99
99
99
99
99

Low Clouds (% Sky Obscured)

0
0
12
24
35
37
39
40
37
33
30
38
47
56
76
80
81
83
85
88
89
86
83
81

Medium Clouds (% Sky Obscured)

40
43
39
37
29
27
27
30
26
32
72
69
68
57
85
89
97
95
95
98
85
72
60
64

High Clouds (% Sky Obscured)

9
0
1
2
6
8
10
11
17
13
75
70
70
70
95
95
95
94
92
86
74
32
25
41

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
3
9
5
4
3
2
2
2
2
3
4
5

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
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

6
7
17
21
23
33
36
32
27
21
18
65
79
84
95
95
95
95
95
95
95
95
95
95

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0.4
0.7
0.5
0.9
1.3
1.8
1.6
1.5
1.4
1.3
1.2
1.1
0.8

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

17
18
18
18
19
19
18
17
15
14
13
12
11
10
10
10
10
10
10
10
10
10
11
11

Feels Like (°C)

13
15
15
16
17
17
17
17
16
14
11
10
9
8
8
8
8
8
8
8
8
8
9
9

Dew Point (°C)

5
6
7
7
8
8
7
7
7
6
5
5
7
8
9
9
9
9
9
9
9
9
10
10

Relative Humidity (%)

46
46
49
50
47
48
49
52
56
59
58
64
77
88
91
91
93
96
96
96
96
95
96
95

Pressure (mb)

1012
1011
1011
1010
1010
1010
1010
1010
1011
1011
1011
1012
1012
1011
1011
1011
1011
1010
1010
1011
1011
1011
1010
1010

Ozone (du)

362
364
363
362
361
362
362
362
360
359
359
359
359
360
359
360
362
363
364
365
365
364
364
363

Saturday 25

Waxing Gibbous 71%

13:54

03:41

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
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad

Sun - Rise: 06:06, Set: 19:50, Transit: 12:59. Moon - Rise: 13:54, Set: 03:41. Civil Dark: 20:19 - 05:37. Nautical Dark: 20:54 - 05:02. Astro Dark: 21:31 - 04:25

Total Clouds (% Sky Obscured)

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

Low Clouds (% Sky Obscured)

78
75
65
56
45
50
54
58
67
77
86
82
79
78
85
90
95
98
100
100
100
100
100
99

Medium Clouds (% Sky Obscured)

61
65
70
83
90
74
57
38
25
13
0
21
4
5
0
0
0
0
0
0
0
0
0
1

High Clouds (% Sky Obscured)

71
100
100
100
100
100
100
100
100
100
83
64
34
12
4
1
0
0
3
7
11
24
56
71

ISS Passover

Visibility (miles)

6
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

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

Precipitation Probability (%)

73
60
59
61
66
60
49
32
28
24
21
19
14
6
10
9
9
7
5
1
8
10
11
10

Precipitation Amount (mm)

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

Wind Speed/Direction (mph)

7
7
6
6
5
5
6
6
7
6
6
6
5
4
4
4
4
4
4
4
4
4
5
5

Chance of Frost

Temperature (°C)

11
12
12
12
12
12
12
11
11
10
9
9
9
9
8
8
8
8
9
9
9
10
11
12

Feels Like (°C)

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

Dew Point (°C)

11
11
11
11
11
11
10
10
9
9
8
8
8
8
7
7
7
7
7
7
7
7
7
7

Relative Humidity (%)

95
95
95
93
93
93
92
93
91
93
93
93
93
95
93
93
93
93
90
88
85
81
76
72

Pressure (mb)

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

Ozone (du)

363
362
362
362
363
363
365
366
368
368
368
369
370
371
371
371
372
372
370
368
366
365
365
364

Sunday 26

Waxing Gibbous 80%

15:01

04:04

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
06 Bad
07 Bad

Sun - Rise: 06:05, Set: 19:51, Transit: 12:59. Moon - Rise: 15:01, Set: 04:04. Civil Dark: 20:20 - 05:36. Nautical Dark: 20:55 - 05:01. Astro Dark: 21:32 - 04:23

Total Clouds (% Sky Obscured)

99
99
98
96
94
93
92
92
95
97
99
97
88
92
86
94
93
86
88
85

Low Clouds (% Sky Obscured)

98
96
94
89
86
82
80
75
81
89
93
77
61
50
35
25
6
12
13
10

Medium Clouds (% Sky Obscured)

1
3
21
39
57
66
76
90
88
90
87
81
79
72
80
88
92
86
84
80

High Clouds (% Sky Obscured)

62
48
32
18
0
0
0
10
19
36
60
65
53
35
23
11
13
6
1
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

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 (%)

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

5
5
5
5
5
5
5
6
6
6
5
5
5
4
4
4
4
5
5
5

Chance of Frost

Temperature (°C)

12
13
14
14
14
14
13
13
12
12
11
11
10
10
10
9
9
8
9
9

Feels Like (°C)

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

Dew Point (°C)

7
7
6
6
7
7
7
7
7
7
7
7
6
6
6
5
5
5
4
3

Relative Humidity (%)

67
65
61
61
62
62
66
70
72
73
76
76
76
76
76
76
75
77
72
67

Pressure (mb)

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

Ozone (du)

364
363
363
364
366
367
367
368
368
367
367
366
366
366
367
367
368
368
367
366

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

Generated: 20/04/26 12:05:31. Forecast: 20/04/26 to 26/04/26. Timezone: UTC-4.00