Oak Brook in numbers
- Coordinates
- 41.8328, -87.9289
- Elevation
- 202 m above sea level
- Population
- 8 091
- Region
- Illinois
- Country
- United States, North America
- Capital
- Washington, D.C. — 978 km away
What time is it in Oak Brook, Illinois, United States
Below is the local time in Oak Brook, Illinois, United States, kept in the America/Chicago zone (−6).
Oak Brook, United States
Saturday, 7 November 2026
UTC−6 · America/Chicago
Local time in Oak Brook
UTC−6 · no daylight saving time
Local time in Oak Brook, Illinois.
The sun today
Sunrise 6:32 AM Solar noon 11:37 AM Sunset 4:41 PM Daylight 10 h 08 min Night 13 h 52 min Civil twilight 6:03 AM – 5:10 PM
Weather in Oak Brook right now
Loading the current weather…
Weather data by Open-Meteo, updated every 30 minutes.
Oak Brook and its neighbours
Postal codes
- 60523
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
Largest cities in Illinois
Same time zone — America/Chicago
- Chicago United States
- Houston United States
- San Antonio United States
- Dallas United States
- Fort Worth United States
- Austin United States
Nearby places
- Fullersburg — 1.9 km
- Mammoth Springs — 2.9 km
- Western Springs — 3.5 km
- Hinsdale — 3.6 km
- Yorkfield — 3.8 km
- Utopia — 4.2 km
Time and daylight in Oak Brook
The name of the time zone in Oak Brook is America/Chicago, and it runs UTC−6. Daylight saving time: No.
The sun rises at 6:32 AM, sets at 4:41 PM, and stays over Oak Brook for 10 h 08 min. That is today's daylight.
Fullersburg and Mammoth Springs sit nearby and do not run ahead of or behind Oak Brook.
Records show 1 postal code for Oak Brook.
Questions and answers
- Which time zone determines the local time in Oak Brook?
- Local time in Oak Brook is determined by America/Chicago, with an offset of −6.
- Does Oak Brook use summer time?
- No.
- Can you tell me the sunset time in Oak Brook?
- In Oak Brook the sun sets at 4:41 PM.