Sunrise and sunset times in Boulder, IL
Check out today's and tomorrow's sunrise and sunset times in Boulder, IL, United States, as well as the whole calendar for August 2026.
Today
August 20, 2026 . Current time: 11:47:09 am
First light at 5:47:44 am
Sunrise time: 6:14:17 am
Sunset time: 7:46:11 pm
Last light at 8:12:44 pm
Day length: 13 hours, 31 minutes
7 hours, 59 minutes left for today's sunset in Boulder
Moon will rise on Aug 20 at 2:45 PM
Moon will set on Aug 20 at 11:52 PMMoon phase: 🌓 First Quarter (56%)🌕 Full moon: Aug 27 at 11:19 PM · 🌑 New moon: Sep 10 at 10:27 PMTomorrow
August 21, 2026
First light at 5:48:42 am
Sunrise time: 6:15:11 am
Sunset time: 7:44:47 pm
Last light at 8:11:16 pm
Day length: 13 hours, 29 minutes
Tomorrow will be 2 minutes shorter than today in Boulder
Moon will rise on Aug 21 at 3:43 PM Moon will set on Aug 22 at 12:00 AMMoon phase: 🌔 Waxing Gibbous (69%)
- Boulder, Illinois
- Latitude: 38.696667
- Longitude: -89.225555
- Time zone: Central Time CDT
Shortest day in Boulder, IL
The shortest day of the year will be in 4 months, during the winter solstice on December 21, 2026, with a daylight length of 9 hours and 30 minutes.Longest day in Boulder, IL
The longest day of the year was 1 month and 29 days ago, during the summer solstice on June 21, 2026, with a daylight length of 14 hours and 55 minutes.
August 2026 - Boulder, Illinois - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of August in Boulder.
The day length shortens by 1 hour, 5 minutes over the course of August 2026 in Boulder, IL - from 14 hours, 12 minutes on the first day to 13 hours, 6 minutes on the last day.
| Day | First Light | Sunrise | Sunset | Last Light | Day Length | Day Length Variation | Solar Noon
Time of day when the sun reaches its highest point in the sky.
|
Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night Length
Calculated form this day's sunset to the next day's sunrise.
|
Moon phase |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat, Aug 1 | 5:29:11 am | 5:57:14 am | 8:09:14 pm | 8:37:18 pm | 14h 12m 0s | 14h 12m 0s | 1:03:14 pm | 56.6° | 4:53:00 am | 9:13:29 pm | 4:13:39 am | 9:52:50 pm | 9h 48m 53s | 🌖 (93%) |
| Sun, Aug 2 | 5:30:09 am | 5:58:07 am | 8:08:13 pm | 8:36:11 pm | 14h 10m 6s | -1m -54s | 1:03:10 pm | 56.3° | 4:54:07 am | 9:12:13 pm | 4:14:59 am | 9:51:21 pm | 9h 50m 48s | 🌖 (87%) |
| Mon, Aug 3 | 5:31:07 am | 5:59:01 am | 8:07:10 pm | 8:35:03 pm | 14h 8m 9s | -1m -57s | 1:03:05 pm | 56° | 4:55:14 am | 9:10:57 pm | 4:16:20 am | 9:49:51 pm | 9h 52m 44s | 🌖 (80%) |
| Tue, Aug 4 | 5:32:06 am | 5:59:54 am | 8:06:06 pm | 8:33:54 pm | 14h 6m 12s | -1m -57s | 1:03:00 pm | 55.8° | 4:56:21 am | 9:09:39 pm | 4:17:40 am | 9:48:20 pm | 9h 54m 41s | 🌖 (70%) |
| Wed, Aug 5 | 5:33:04 am | 6:00:47 am | 8:05:00 pm | 8:32:43 pm | 14h 4m 13s | -1m -59s | 1:02:54 pm | 55.5° | 4:57:28 am | 9:08:19 pm | 4:19:00 am | 9:46:47 pm | 9h 56m 41s | 🌖 (60%) |
| Thu, Aug 6 | 5:34:03 am | 6:01:41 am | 8:03:53 pm | 8:31:31 pm | 14h 2m 12s | -2m -1s | 1:02:47 pm | 55.2° | 4:58:35 am | 9:06:59 pm | 4:20:21 am | 9:45:13 pm | 9h 58m 42s | 🌗 (49%) |
| Fri, Aug 7 | 5:35:01 am | 6:02:35 am | 8:02:45 pm | 8:30:18 pm | 14h 0m 10s | -2m -2s | 1:02:40 pm | 55° | 4:59:42 am | 9:05:37 pm | 4:21:41 am | 9:43:39 pm | 10h 0m 44s | 🌘 (37%) |
| Sat, Aug 8 | 5:36:00 am | 6:03:29 am | 8:01:35 pm | 8:29:03 pm | 13h 58m 6s | -2m -4s | 1:02:32 pm | 54.7° | 5:00:50 am | 9:04:14 pm | 4:23:01 am | 9:42:03 pm | 10h 2m 48s | 🌘 (27%) |
| Sun, Aug 9 | 5:36:59 am | 6:04:23 am | 8:00:24 pm | 8:27:48 pm | 13h 56m 1s | -2m -5s | 1:02:23 pm | 54.4° | 5:01:57 am | 9:02:50 pm | 4:24:21 am | 9:40:26 pm | 10h 4m 53s | 🌘 (17%) |
| Mon, Aug 10 | 5:37:58 am | 6:05:17 am | 7:59:12 pm | 8:26:31 pm | 13h 53m 55s | -2m -6s | 1:02:14 pm | 54.1° | 5:03:04 am | 9:01:25 pm | 4:25:40 am | 9:38:48 pm | 10h 6m 59s | 🌘 (9%) |
| Tue, Aug 11 | 5:38:57 am | 6:06:11 am | 7:57:59 pm | 8:25:12 pm | 13h 51m 48s | -2m -7s | 1:02:05 pm | 53.8° | 5:04:11 am | 8:59:58 pm | 4:27:00 am | 9:37:09 pm | 10h 9m 6s | 🌘 (3%) |
| Wed, Aug 12 | 5:39:56 am | 6:07:05 am | 7:56:44 pm | 8:23:53 pm | 13h 49m 39s | -2m -9s | 1:01:54 pm | 53.5° | 5:05:18 am | 8:58:31 pm | 4:28:19 am | 9:35:30 pm | 10h 11m 15s | 🌘 (0%) |
| Thu, Aug 13 | 5:40:55 am | 6:07:59 am | 7:55:29 pm | 8:22:33 pm | 13h 47m 30s | -2m -9s | 1:01:44 pm | 53.2° | 5:06:25 am | 8:57:03 pm | 4:29:38 am | 9:33:50 pm | 10h 13m 24s | 🌑 (0%) |
| Fri, Aug 14 | 5:41:53 am | 6:08:53 am | 7:54:12 pm | 8:21:12 pm | 13h 45m 19s | -2m -11s | 1:01:32 pm | 52.9° | 5:07:31 am | 8:55:34 pm | 4:30:56 am | 9:32:09 pm | 10h 15m 35s | 🌒 (3%) |
| Sat, Aug 15 | 5:42:52 am | 6:09:47 am | 7:52:54 pm | 8:19:49 pm | 13h 43m 7s | -2m -12s | 1:01:21 pm | 52.6° | 5:08:38 am | 8:54:03 pm | 4:32:14 am | 9:30:27 pm | 10h 17m 47s | 🌒 (8%) |
| Sun, Aug 16 | 5:43:51 am | 6:10:41 am | 7:51:35 pm | 8:18:26 pm | 13h 40m 54s | -2m -13s | 1:01:08 pm | 52.3° | 5:09:44 am | 8:52:32 pm | 4:33:32 am | 9:28:44 pm | 10h 20m 0s | 🌒 (15%) |
| Mon, Aug 17 | 5:44:49 am | 6:11:35 am | 7:50:16 pm | 8:17:02 pm | 13h 38m 41s | -2m -13s | 1:00:55 pm | 51.9° | 5:10:50 am | 8:51:01 pm | 4:34:50 am | 9:27:01 pm | 10h 22m 13s | 🌒 (23%) |
| Tue, Aug 18 | 5:45:48 am | 6:12:29 am | 7:48:55 pm | 8:15:37 pm | 13h 36m 26s | -2m -15s | 1:00:42 pm | 51.6° | 5:11:56 am | 8:49:28 pm | 4:36:07 am | 9:25:18 pm | 10h 24m 28s | 🌒 (32%) |
| Wed, Aug 19 | 5:46:46 am | 6:13:23 am | 7:47:33 pm | 8:14:11 pm | 13h 34m 10s | -2m -16s | 1:00:28 pm | 51.3° | 5:13:02 am | 8:47:55 pm | 4:37:23 am | 9:23:33 pm | 10h 26m 44s | 🌒 (41%) |
| Thu, Aug 20 | 5:47:44 am | 6:14:17 am | 7:46:11 pm | 8:12:44 pm | 13h 31m 54s | -2m -16s | 1:00:14 pm | 51° | 5:14:07 am | 8:46:21 pm | 4:38:39 am | 9:21:49 pm | 10h 29m 0s | 🌓 (51%) |
| Fri, Aug 21 | 5:48:42 am | 6:15:11 am | 7:44:47 pm | 8:11:16 pm | 13h 29m 36s | -2m -18s | 12:59:59 pm | 50.6° | 5:15:12 am | 8:44:46 pm | 4:39:55 am | 9:20:03 pm | 10h 31m 18s | 🌔 (60%) |
| Sat, Aug 22 | 5:49:40 am | 6:16:05 am | 7:43:23 pm | 8:09:48 pm | 13h 27m 18s | -2m -18s | 12:59:44 pm | 50.3° | 5:16:17 am | 8:43:11 pm | 4:41:10 am | 9:18:18 pm | 10h 33m 36s | 🌔 (69%) |
| Sun, Aug 23 | 5:50:38 am | 6:16:59 am | 7:41:58 pm | 8:08:19 pm | 13h 24m 59s | -2m -19s | 12:59:28 pm | 49.9° | 5:17:22 am | 8:41:35 pm | 4:42:25 am | 9:16:32 pm | 10h 35m 54s | 🌔 (78%) |
| Mon, Aug 24 | 5:51:35 am | 6:17:52 am | 7:40:32 pm | 8:06:49 pm | 13h 22m 40s | -2m -19s | 12:59:12 pm | 49.6° | 5:18:26 am | 8:39:58 pm | 4:43:39 am | 9:14:45 pm | 10h 38m 14s | 🌔 (85%) |
| Tue, Aug 25 | 5:52:33 am | 6:18:46 am | 7:39:05 pm | 8:05:18 pm | 13h 20m 19s | -2m -21s | 12:58:55 pm | 49.3° | 5:19:30 am | 8:38:21 pm | 4:44:52 am | 9:12:59 pm | 10h 40m 35s | 🌔 (91%) |
| Wed, Aug 26 | 5:53:30 am | 6:19:40 am | 7:37:37 pm | 8:03:47 pm | 13h 17m 57s | -2m -22s | 12:58:38 pm | 48.9° | 5:20:33 am | 8:36:43 pm | 4:46:05 am | 9:11:12 pm | 10h 42m 56s | 🌔 (96%) |
| Thu, Aug 27 | 5:54:27 am | 6:20:33 am | 7:36:09 pm | 8:02:15 pm | 13h 15m 36s | -2m -21s | 12:58:21 pm | 48.6° | 5:21:37 am | 8:35:05 pm | 4:47:18 am | 9:09:24 pm | 10h 45m 18s | 🌔 (99%) |
| Fri, Aug 28 | 5:55:24 am | 6:21:27 am | 7:34:40 pm | 8:00:43 pm | 13h 13m 13s | -2m -23s | 12:58:03 pm | 48.2° | 5:22:40 am | 8:33:27 pm | 4:48:30 am | 9:07:37 pm | 10h 47m 40s | 🌕 (100%) |
| Sat, Aug 29 | 5:56:21 am | 6:22:20 am | 7:33:11 pm | 7:59:10 pm | 13h 10m 51s | -2m -22s | 12:57:45 pm | 47.9° | 5:23:43 am | 8:31:48 pm | 4:49:42 am | 9:05:49 pm | 10h 50m 2s | 🌖 (99%) |
| Sun, Aug 30 | 5:57:17 am | 6:23:13 am | 7:31:41 pm | 7:57:37 pm | 13h 8m 28s | -2m -23s | 12:57:27 pm | 47.5° | 5:24:45 am | 8:30:09 pm | 4:50:53 am | 9:04:01 pm | 10h 52m 25s | 🌖 (95%) |
| Mon, Aug 31 | 5:58:14 am | 6:24:06 am | 7:30:10 pm | 7:56:03 pm | 13h 6m 4s | -2m -24s | 12:57:08 pm | 47.1° | 5:25:47 am | 8:28:29 pm | 4:52:03 am | 9:02:13 pm | 10h 54m 50s | 🌖 (90%) |
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Sunrise and Sunset photos in Boulder, IL
Enjoy this beautiful gallery of images of the sunset and sunrise at Boulder, IL. All images provided by our fantastic community of photographers!
Year distribution of sunrise and sunset times in Boulder, IL - 2026
The following graph shows sunrise and sunset times in Boulder, IL for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Boulder, IL.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Boulder, IL
In Boulder, IL, the earliest sunrise of 2026 is on June 13 at 5:30 am, while the latest sunrise is on October 31 at 7:21 am. The earliest sunset is on December 6 at 4:36 pm, and the latest sunset is on June 28 at 8:27 pm.
Boulder, IL gets 5h 25m more daylight on the longest day than on the shortest one (14h 55m versus 9h 30m). Averaged over the whole year, a day lasts 12h 14m.
Places near Boulder, IL
These nearby towns and cities have almost the same sunrise and sunset times as Boulder, IL — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Keyesport 7 kmHuey 12 kmPatoka 13 kmSandoval 13 kmJunction City 15 kmCarlyle 16 kmVernon 17 kmOdin 17 km