Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 5

First Quarter 58%

10:51

02:18

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

Sun - Rise: 07:03, Set: 17:25, Transit: 12:14. Moon - Rise: 10:51, Set: 02:18. Civil Dark: 17:53 - 06:35. Nautical Dark: 18:26 - 06:03. Astro Dark: 18:57 - 05:30

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
4
1
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
0

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)

0
0
0
0
0
0
2
1
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 (%)

49
29
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
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
8
17
25
18
8
8
7
9
9
18
4
4
2
4
3
1
2
1
1

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
7
2
16
25
25
23
23
21
20
19
19
17
15
13
10
8
11
12
13
14
17
14
10

Chance of Frost

Temperature (°C)

6
5
7
11
13
14
14
14
14
13
12
11
10
9
8
9
9
9
8
8
8
8
8
7

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

37
39
35
29
29
30
30
31
34
36
39
38
42
46
51
43
41
41
40
40
41
40
37
35

Pressure (mb)

1005
1005
1004
1004
1003
1003
1003
1003
1004
1004
1004
1005
1006
1007
1008
1008
1008
1008
1009
1009
1009
1009
1009
1009

Ozone (du)

287
289
286
282
281
278
276
276
275
276
277
277
278
279
281
282
284
285
285
284
282
283
284
284

Thursday 6

Waxing Gibbous 69%

11:31

03:30

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 Good
19 OK
20 Bad
21 OK
22 OK
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 Good

Sun - Rise: 07:02, Set: 17:26, Transit: 12:14. Moon - Rise: 11:31, Set: 03:30. Civil Dark: 17:55 - 06:34. Nautical Dark: 18:27 - 06:02. Astro Dark: 18:58 - 05:29

Total Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
16
25
25
15
48
54
34
21
7
0
0
11
4
10
8

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
38
29
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
16
25
25
15
18
27
28
17
5
0
0
9
3
6
3

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
2
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
51
77
8
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 (%)

1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
2
1
2
7
6

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
0
1
0
1
2
3
4
4
4
4
4
4
3
3
1
3
1
1
1
1
1
1
1

Chance of Frost

Temperature (°C)

5
3
3
5
8
9
10
10
9
9
9
6
4
4
4
3
3
2
1
0
-0
-1
-1
-1

Feels Like (°C)

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

Dew Point (°C)

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

Relative Humidity (%)

43
50
56
50
37
41
39
40
44
46
47
59
66
63
63
63
64
66
66
63
59
59
58
57

Pressure (mb)

1010
1012
1014
1014
1013
1013
1012
1010
1010
1010
1010
1010
1011
1012
1012
1011
1011
1011
1011
1010
1010
1010
1010
1010

Ozone (du)

282
283
283
284
285
284
286
286
284
283
285
286
286
285
286
289
291
291
291
290
290
290
291
291

Friday 7

Waxing Gibbous 79%

12:20

04:35

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 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 07:01, Set: 17:28, Transit: 12:14. Moon - Rise: 12:20, Set: 04:35. Civil Dark: 17:56 - 06:33. Nautical Dark: 18:28 - 06:01. Astro Dark: 18:59 - 05:28

Total Clouds (% Sky Obscured)

6
4
3
0
5
0
0
0
0
0
0
0
0
0
0
27
37
40
44
42
37
28
14
14

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
12
17
26
31
21
9
0
0

Medium Clouds (% Sky Obscured)

2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
17
18
18
32
26
26
21
14
13

High Clouds (% Sky Obscured)

1
1
1
0
2
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
4
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
9
8
6
5
4
5
6
6
6
1
3
4
7
15
15
20
27
33
35
49
52
46
50

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
1
0
0
3
4
5
5
9
12
12
7
9
10
10
9
8
5
7
3
4
4
14
16

Chance of Frost

Temperature (°C)

-1
-1
0
3
7
10
12
14
14
14
13
9
7
7
8
8
7
6
5
4
3
4
3
3

Feels Like (°C)

-2
-2
-1
2
5
8
10
13
13
13
11
8
6
6
6
5
4
5
5
2
2
1
-3
-2

Dew Point (°C)

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

Relative Humidity (%)

57
60
54
47
42
37
33
30
30
30
39
51
52
48
43
43
44
49
60
62
65
53
45
40

Pressure (mb)

1011
1011
1011
1009
1008
1006
1004
1003
1002
1001
1001
1002
1002
1002
1002
1002
1002
1001
1002
1003
1004
1007
1010
1012

Ozone (du)

291
291
290
290
290
290
290
289
287
286
285
285
286
287
286
283
283
283
283
284
285
282
281
282

Saturday 8

Waxing Gibbous 88%

13:19

05:29

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

Sun - Rise: 07:00, Set: 17:29, Transit: 12:14. Moon - Rise: 13:19, Set: 05:29. Civil Dark: 17:57 - 06:32. Nautical Dark: 18:29 - 05:59. Astro Dark: 19:00 - 05:27

Total Clouds (% Sky Obscured)

11
6
4
2
0
0
0
0
5
11
16
26
59
39
34
34
24
62
81
90
90
86
50
16

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
3
4
6
8
9
11
15
20
21
21
18
16
18
49
16
11

Medium Clouds (% Sky Obscured)

11
6
4
2
0
0
0
0
5
7
11
20
29
29
34
34
24
62
66
62
44
24
10
4

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
2
4
3
20
4
3
4
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
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

45
20
46
39
3
15
13
0
1
2
0
7
4
2
6
7
5
9
16
19
29
27
10
16

Precipitation Amount (mm)

0
0
0.3
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)

11
10
10
11
11
10
11
13
15
12
13
13
9
8
8
5
5
5
4
5
7
9
7
5

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

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

Dew Point (°C)

-11
-13
-13
-12
-14
-14
-14
-15
-15
-15
-13
-12
-13
-13
-12
-11
-11
-11
-11
-12
-12
-12
-12
-12

Relative Humidity (%)

35
33
33
31
26
22
20
16
16
15
21
27
29
34
39
45
50
53
53
52
51
50
51
52

Pressure (mb)

1013
1016
1017
1017
1017
1016
1013
1012
1011
1011
1012
1013
1015
1018
1020
1022
1023
1024
1024
1024
1024
1024
1025
1026

Ozone (du)

284
286
287
290
291
293
294
295
297
299
298
301
305
307
307
309
309
310
312
312
313
315
318
322

Sunday 9

Waxing Gibbous 94%

14:26

No Set

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

Sun - Rise: 06:59, Set: 17:30, Transit: 12:14. Moon - Rise: 14:26, Set: No Set. Civil Dark: 17:58 - 06:31. Nautical Dark: 18:30 - 05:58. Astro Dark: 19:02 - 05:26

Total Clouds (% Sky Obscured)

11
1
0
0
0
5
10
20
19
23
22
34
51
64
65
82
89
75
63
49
42
34
13
9

Low Clouds (% Sky Obscured)

6
0
0
0
0
5
10
20
19
23
22
34
51
64
65
82
89
72
55
37
25
13
2
2

Medium Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
4
9
11
9
5
3
16
27
39
35
32
25
8
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
9
27
40
33
26
20
20
18
13
5

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 (%)

12
1
7
4
0
2
4
3
5
5
4
7
7
7
10
11
10
10
8
2
6
5
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
2
1
1
3
3
4
6
7
7
8
8
7
6
6
4
4
4
3
3
2
3
3
3

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-7
-6
-6
-5
-5
-4
-4
-3
-3
-3
-3
-3
-3
-3
-4
-4
-5
-5
-7
-7
-7
-7
-7
-8

Dew Point (°C)

-12
-12
-13
-12
-12
-12
-12
-12
-12
-12
-12
-11
-12
-12
-12
-13
-14
-14
-15
-15
-15
-15
-15
-15

Relative Humidity (%)

54
54
51
47
44
42
40
40
37
37
37
44
44
47
47
45
44
42
43
44
45
48
50
51

Pressure (mb)

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

Ozone (du)

324
324
325
325
326
327
329
329
330
330
329
328
328
327
326
327
327
328
332
336
340
341
342
343

Monday 10

Waxing Gibbous 98%

15:35

06:12

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

Sun - Rise: 06:57, Set: 17:31, Transit: 12:14. Moon - Rise: 15:35, Set: 06:12. Civil Dark: 17:59 - 06:30. Nautical Dark: 18:31 - 05:57. Astro Dark: 19:03 - 05:25

Total Clouds (% Sky Obscured)

7
4
7
9
12
21
31
44
69
66
78
70
63
55
54
56
55
70
84
99
98
96
95
77

Low Clouds (% Sky Obscured)

2
2
4
3
12
9
9
8
26
44
63
55
49
42
47
46
49
65
82
99
98
96
95
72

Medium Clouds (% Sky Obscured)

0
0
2
4
5
11
14
21
29
45
57
52
48
38
35
33
27
49
71
93
78
63
47
33

High Clouds (% Sky Obscured)

2
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
8
8
8
8
6
3
0
0
0
0
3
5
8

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
Snow
None
None
None
Snow
Snow
None
None
Snow
None

Precipitation Probability (%)

0
0
0
0
0
0
1
2
8
12
13
21
24
27
32
31
25
31
36
46
34
28
35
27

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.1
0
0
0
0.1
0.3
0
0
0.1
0

Wind Speed/Direction (mph)

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

Chance of Frost

Temperature (°C)

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

Feels Like (°C)

-8
-9
-9
-9
-9
-10
-4
-5
-4
-4
-3
-3
-5
-4
-4
-4
-4
-5
-7
-7
-7
-8
-8
-8

Dew Point (°C)

-15
-15
-15
-14
-14
-14
-13
-12
-12
-11
-10
-10
-10
-10
-10
-8
-7
-5
-6
-6
-6
-7
-8
-8

Relative Humidity (%)

50
50
49
48
45
43
42
42
41
44
49
53
55
57
59
69
78
90
89
89
90
87
87
87

Pressure (mb)

1024
1024
1024
1024
1023
1022
1020
1019
1017
1017
1017
1017
1018
1019
1020
1021
1021
1022
1022
1023
1024
1025
1026
1026

Ozone (du)

346
350
353
359
365
370
372
374
376
380
384
387
390
393
396
396
397
397
395
392
390
390
389
389

Tuesday 11

Waxing Gibbous 100%

16:44

06:47

Sun - Rise: 06:56, Set: 17:32, Transit: 12:14. Moon - Rise: 16:44, Set: 06:47. Civil Dark: 18:00 - 06:28. Nautical Dark: 18:32 - 05:55. Astro Dark: 19:04 - 05:24

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 Niwot, Boulder, United States of America (40.10,-105.17)

Generated: 05/02/25 06:02:14. Forecast: 05/02/25 to 11/02/25. Timezone: UTC-7.00