Sun Times in Oak Brook
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Frequently Asked Questions
What time is sunrise in Oak Brook?
Sunrise in Oak Brook on Monday, August 17, 2026 is at 6:02 AM (America/Chicago). This time is calculated from the city's coordinates.
What time is sunset in Oak Brook?
Sunset in Oak Brook on Monday, August 17, 2026 is at 7:48 PM (America/Chicago). This time is calculated from the city's coordinates.
When is golden hour in Oak Brook?
Morning golden hour in Oak Brook ends at 6:40 AM. Evening golden hour starts at 7:10 PM.
How long is the day in Oak Brook?
On Monday, August 17, 2026 in Oak Brook there are 13 hours and 46 minutes of daylight between sunrise and sunset.
What time is the sun at its highest point in Oak Brook?
The sun reaches its highest point (solar noon) in Oak Brook at 12:55 PM (America/Chicago). This is when the sun crosses the meridian and shadows are at their shortest.
What time does it get dark in Oak Brook?
In Oak Brook, sunset is at 7:48 PM and it gets fully dark (astronomical dusk) at 9:33 PM (America/Chicago). Civil twilight ends at 8:18 PM when outdoor activities need artificial light.
How long does twilight last in Oak Brook?
Twilight in Oak Brook lasts approximately 105 minutes from sunset to full darkness (astronomical dusk). This includes civil twilight, nautical twilight, and astronomical twilight.
What is the earliest sunrise of the year in Oak Brook?
The earliest sunrise in Oak Brook in 2026 is at 5:16 AM on June 8 (America/Chicago). This occurs around the summer solstice when days are longest.
What is the latest sunset of the year in Oak Brook?
The latest sunset in Oak Brook in 2026 is at 8:30 PM on June 20 (America/Chicago). This occurs shortly after the summer solstice.
What time does it actually get dark after sunset in Oak Brook?
After sunset at 7:48 PM in Oak Brook, civil twilight ends at 8:18 PM — about 30 minutes later — when the sky becomes too dark for outdoor activities without artificial light. Full darkness (astronomical dusk) arrives at 9:33 PM (America/Chicago).
What these times mean
Solar times in Oak Brook shift throughout the year. Each stage of the day brings distinct light that photographers, outdoor planners, and everyday users rely on.
- Dawn
- The first usable twilight before sunrise, when the horizon brightens and color gradually returns to the sky.
- Sunrise
- The moment the upper edge of the sun appears above the horizon, starting direct daylight.
- Golden Hour
- The low-angle window just after sunrise and just before sunset, producing warm, soft light favored by photographers.
- Sunset
- The moment the upper edge of the sun drops below the horizon, ending direct sunlight for the day.
- Dusk
- The fading twilight after sunset, ending with astronomical dusk when the sky becomes fully dark.
Monthly daylight in Oak Brook
Sunrise, sunset, and total daylight in Oak Brook on the 15th of each month for 2026. Times reflect the city's local timezone.
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:16 AM | 4:46 PM | 9h 29m |
| February | 6:47 AM | 5:25 PM | 10h 38m |
| March | 7:03 AM | 6:58 PM | 11h 55m |
| April | 6:11 AM | 7:32 PM | 13h 21m |
| May | 5:31 AM | 8:05 PM | 14h 34m |
| June | 5:16 AM | 8:28 PM | 15h 12m |
| July | 5:30 AM | 8:25 PM | 14h 55m |
| August | 6:00 AM | 7:51 PM | 13h 52m |
| September | 6:32 AM | 7:00 PM | 12h 29m |
| October | 7:04 AM | 6:10 PM | 11h 06m |
| November | 6:41 AM | 4:30 PM | 9h 50m |
| December | 7:12 AM | 4:21 PM | 9h 09m |
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