Clear Outside v1.0 - International Weather Forecasts For Astronomers

Sunday 7

Waning Gibbous 84%

19:39

10:51

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

Sun - Rise: 07:11, Set: 16:35, Transit: 11:53. Moon - Rise: 19:39, Set: 10:51. Civil Dark: 17:05 - 06:41. Nautical Dark: 17:39 - 06:07. Astro Dark: 18:12 - 05:34

Total Clouds (% Sky Obscured)

43
25
16
12
60
73
91
86
84
87
57
64
24
3
0
0
0
0
0
3
36
50
45
73

Low 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

Medium Clouds (% Sky Obscured)

43
25
0
0
0
0
5
5
2
4
0
0
0
3
0
0
0
0
0
0
0
0
0
17

High Clouds (% Sky Obscured)

24
19
2
12
52
72
88
83
82
80
26
25
10
0
0
0
0
0
0
1
18
25
25
41

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
1
1
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
2
1
3
3
6
7
8
8
6
4
4
4
3
2
4
2
1
2
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
2
2
2
4
4
5
5
5
6
7
9
9
9
8
5
4
8
9
11
12
11
9
7

Chance of Frost

Temperature (°C)

1
-1
-1
-2
-2
-2
-1
0
-0
1
1
-1
0
-0
-1
2
6
8
9
9
9
8
8
6

Feels Like (°C)

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

Dew Point (°C)

-9
-9
-10
-10
-11
-11
-10
-9
-9
-8
-7
-8
-8
-8
-9
-7
-4
-5
-5
-5
-6
-5
-4
-5

Relative Humidity (%)

47
51
51
52
51
49
50
51
53
53
56
56
53
56
54
54
46
40
37
36
35
39
43
46

Pressure (mb)

1021
1022
1022
1021
1020
1020
1019
1019
1018
1017
1017
1017
1017
1018
1019
1019
1018
1018
1017
1016
1016
1016
1016
1017

Ozone (du)

290
288
288
289
288
287
288
287
286
287
287
284
283
283
285
289
293
299
308
310
303
306
310
310

Monday 8

Waning Gibbous 74%

20:54

11:22

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:12, Set: 16:35, Transit: 11:54. Moon - Rise: 20:54, Set: 11:22. Civil Dark: 17:06 - 06:41. Nautical Dark: 17:39 - 06:07. Astro Dark: 18:12 - 05:35

Total Clouds (% Sky Obscured)

100
100
100
61
90
98
100
76
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100

Low 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

Medium Clouds (% Sky Obscured)

24
59
69
46
31
3
5
43
43
0
0
0
0
0
0
0
16
2
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
56
64
98
100
56
100
100
100
100
98
100
100
100
100
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
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
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3

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)

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

Chance of Frost

Temperature (°C)

5
3
4
4
3
5
5
3
3
3
4
4
2
2
3
4
6
9
10
9
12
12
11
8

Feels Like (°C)

-1
-3
-2
-1
-2
-1
-1
-2
-3
-3
-2
-2
-3
-2
-2
-1
2
6
6
6
8
8
8
5

Dew Point (°C)

-5
-7
-7
-6
-6
-6
-6
-7
-8
-8
-8
-8
-8
-8
-7
-7
-6
-3
-3
-3
-2
-1
-1
-2

Relative Humidity (%)

48
49
47
48
50
44
43
46
46
46
43
43
46
47
47
46
44
41
40
41
40
40
43
50

Pressure (mb)

1017
1018
1018
1017
1017
1016
1016
1015
1014
1014
1013
1011
1010
1010
1009
1009
1008
1008
1007
1006
1005
1004
1004
1005

Ozone (du)

310
307
306
307
306
304
302
304
307
307
306
308
312
314
314
316
315
315
313
311
311
311
306
297

Tuesday 9

Waning Gibbous 64%

22:05

11:47

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:12, Set: 16:35, Transit: 11:54. Moon - Rise: 22:05, Set: 11:47. Civil Dark: 17:06 - 06:42. Nautical Dark: 17:40 - 06:08. Astro Dark: 18:12 - 05:35

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
99
100
95
94
95
80
69
79
69
68
97
97
97
100
96
96
96
93

Low Clouds (% Sky Obscured)

0
0
0
0
3
29
41
49
22
17
19
19
24
22
13
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
45
37
24
12
21
11
8
5
3
3
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

100
100
100
100
100
100
80
100
83
81
83
43
36
67
67
68
97
97
97
100
96
96
96
93

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 (%)

3
5
4
6
7
11
13
16
15
16
14
12
12
6
12
8
5
5
5
3
3
6
5
3

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

Chance of Frost

Temperature (°C)

6
7
6
7
7
6
7
6
6
6
5
3
2
2
1
2
8
11
13
13
13
13
12
10

Feels Like (°C)

3
4
3
3
3
3
3
4
2
3
1
-2
-3
-3
-2
1
7
9
9
10
10
11
10
7

Dew Point (°C)

-2
-2
-1
-1
-0
-1
-2
-1
-2
-0
-1
-2
-2
-2
-2
-2
-0
1
1
1
1
1
2
0

Relative Humidity (%)

54
53
64
54
62
61
55
61
57
64
66
71
78
80
80
73
57
47
43
41
43
43
49
51

Pressure (mb)

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

Ozone (du)

293
293
292
290
290
292
293
289
287
282
281
277
276
276
275
275
276
278
280
279
280
280
281
280

Wednesday 10

Waning Gibbous 54%

23:12

12:09

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
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:13, Set: 16:36, Transit: 11:54. Moon - Rise: 23:12, Set: 12:09. Civil Dark: 17:06 - 06:43. Nautical Dark: 17:40 - 06:09. Astro Dark: 18:13 - 05:36

Total Clouds (% Sky Obscured)

95
80
91
82
79
95
100
100
100
100
100
95
95
90
89
84
80
79
66
81
80
88
89
93

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
3
5
3
3
3
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
36
3
2
2
1
0
0

High Clouds (% Sky Obscured)

95
80
91
82
79
95
100
100
100
100
100
95
94
88
83
81
80
79
49
72
65
72
75
77

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 (%)

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

10
7
6
6
7
10
7
8
6
6
5
4
3
3
4
2
4
3
5
4
4
3
5
4

Chance of Frost

Temperature (°C)

8
8
7
8
7
7
6
5
6
6
6
5
6
6
8
8
11
12
9
11
12
12
11
7

Feels Like (°C)

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

Dew Point (°C)

-1
-1
-1
1
-1
-2
-1
-1
-1
-1
-1
-1
-1
-1
1
2
1
1
3
3
2
2
2
1

Relative Humidity (%)

53
53
57
62
54
52
58
66
64
64
62
65
64
65
61
63
51
49
67
58
52
50
55
66

Pressure (mb)

1007
1008
1008
1008
1008
1008
1007
1008
1007
1007
1008
1008
1009
1010
1011
1012
1013
1014
1015
1014
1013
1012
1012
1013

Ozone (du)

280
279
280
280
278
278
278
278
279
277
279
280
283
284
286
287
288
286
285
285
288
290
288
287

Thursday 11

Third Quarter 43%

00:15

12:30

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

Sun - Rise: 07:14, Set: 16:36, Transit: 11:55. Moon - Rise: 00:15, Set: 12:30. Civil Dark: 17:06 - 06:44. Nautical Dark: 17:40 - 06:10. Astro Dark: 18:13 - 05:37

Total Clouds (% Sky Obscured)

85
82
74
78
21
85
93
97
100
98
100
100
99
99
98
87
70
56
63
66
72
58
44
38

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
1
10
18
26
26
22
22
22
22
26
13
12
5

Medium Clouds (% Sky Obscured)

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

High Clouds (% Sky Obscured)

69
62
67
71
20
79
89
95
100
98
100
100
93
88
83
68
55
36
47
57
67
53
39
24

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
0
0
0
0
0
0
0
3
6
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
12
17
18
19
19
19
16
12
6
6
4
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
3
3
3
4
3
4
3
3
3
2
7
5
4
2
1
2
3
4
4
4
4
3
2

Chance of Frost

Temperature (°C)

4
3
3
3
3
5
7
7
7
6
6
5
1
1
2
1
2
2
1
2
2
1
0
-1

Feels Like (°C)

0
-1
-0
0
2
4
4
4
3
4
3
-1
-5
-3
-2
-2
-2
-3
-5
-4
-5
-6
-7
-7

Dew Point (°C)

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

Relative Humidity (%)

75
79
79
73
69
68
64
64
60
67
64
61
91
89
86
83
83
80
80
76
73
70
71
72

Pressure (mb)

1015
1015
1015
1015
1014
1014
1014
1014
1014
1015
1015
1018
1025
1027
1028
1030
1030
1031
1031
1029
1028
1026
1026
1026

Ozone (du)

285
287
286
285
284
284
282
279
278
277
278
280
284
284
284
284
285
287
289
288
287
287
287
287

Friday 12

Waning Crescent 34%

01:17

12:50

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

Sun - Rise: 07:15, Set: 16:36, Transit: 11:55. Moon - Rise: 01:17, Set: 12:50. Civil Dark: 17:06 - 06:44. Nautical Dark: 17:40 - 06:10. Astro Dark: 18:13 - 05:37

Total Clouds (% Sky Obscured)

47
52
59
61
63
66
59
52
43
37
66
80
82
83
85
81
73
68
53
39
24
31
36
37

Low Clouds (% Sky Obscured)

7
10
12
18
11
2
3
3
3
2
1
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
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

34
50
59
44
46
47
30
23
9
4
5
11
23
42
73
81
73
68
53
34
14
23
29
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
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)

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

Chance of Frost

Temperature (°C)

-1
-2
-2
-3
-3
-3
-2
-2
-2
-1
0
2
3
4
4
4
6
9
12
14
14
14
12
10

Feels Like (°C)

-7
-6
-5
-5
-6
-7
-8
-5
-6
-6
-6
-5
-5
-0
-1
-1
-1
-2
-2
10
9
9
9
9

Dew Point (°C)

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

Relative Humidity (%)

75
75
78
81
79
78
78
75
71
70
61
53
46
43
40
38
31
26
22
22
23
23
26
30

Pressure (mb)

1026
1026
1025
1025
1024
1023
1021
1020
1019
1018
1017
1015
1014
1014
1014
1013
1013
1012
1012
1011
1010
1010
1011
1012

Ozone (du)

287
286
285
284
284
283
282
281
280
279
279
280
280
277
274
271
268
265
262
262
262
261
263
265

Saturday 13

Waning Crescent 25%

02:17

13:11

17 OK
18 OK
19 OK
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 OK
04 OK
05 OK
06 Good
07 Good
08 Good
09 Good
10 Good

Sun - Rise: 07:15, Set: 16:36, Transit: 11:56. Moon - Rise: 02:17, Set: 13:11. Civil Dark: 17:06 - 06:45. Nautical Dark: 17:40 - 06:11. Astro Dark: 18:13 - 05:38

Total Clouds (% Sky Obscured)

35
33
30
51
69
85
83
82
80
62
45
27
20
14
7
7
7
7

Low Clouds (% Sky Obscured)

9
19
28
44
59
79
79
79
79
55
31
7
5
2
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

High Clouds (% Sky Obscured)

25
18
6
9
11
13
10
6
3
9
14
20
15
11
6
6
6
6

ISS Passover

Visibility (miles)

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

Precipitation Type

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

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

5
3
2
4
3
3
3
3
3
3
3
3
3
2
2
2
1
1

Chance of Frost

Temperature (°C)

7
4
2
0
0
0
1
-1
-1
-1
-1
-3
-3
-4
-3
-3
-1
0

Feels Like (°C)

9
0
1
1
1
0
-0
-4
-3
-4
-4
-5
-5
-6
-6
-5
-5
-5

Dew Point (°C)

-7
-7
-3
-1
-2
-2
-1
-3
-3
-4
-4
-7
-7
-9
-9
-9
-9
-9

Relative Humidity (%)

36
47
66
91
89
88
88
86
84
81
80
75
72
68
63
59
54
50

Pressure (mb)

1014
1016
1017
1019
1020
1020
1020
1020
1020
1021
1020
1020
1019
1019
1019
1018
1018
1017

Ozone (du)

267
267
266
266
266
265
265
266
267
268
266
264
261
256
251
247
245
244

Forecast for Boulder, Boulder, United States of America (40.01,-105.27)

Generated: 07/12/25 17:18:17. Forecast: 07/12/25 to 13/12/25. Timezone: UTC-7.00