Current Time in Oak Brook, DuPage County, Illinois, USA

12:23:11 PM

12:23:11

CDT (Central Daylight Time) · UTC−05:00

America/Chicago

Clock format
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Time zone details

Oak Brook is observing daylight saving time in 2026

Daylight in Oak Brook

Sunrise6:28 AMSolar noon12:47 PMSunset7:06 PM
Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 49 daysUpcomingView detailsWeather nowLoading current forecast…Forecast details

Location facts

Place

Country
USA
State
Illinois
County
DuPage County
Place type
Populated place
Country currency
US Dollar (USD)

Practical

Languages
English, Spanish, Hawaiian, French
Dialing code
+1
Population
8,091
Elevation
202 m

Geography

Geographic coordinates
41° 49' N / 87° 55' W
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Clock changes in Oak Brook

Next clock change

Upcoming

2:00 AM CDT1:00 AM CST

Clocks move back 1 hour

2026

  1. past

    Daylight saving time starts

    2:00 AM CST3:00 AM CDT

    Clocks move forward 1 hour

  2. upcoming

    Daylight saving time ends

    2:00 AM CDT1:00 AM CST

    Clocks move back 1 hour

Future clock changes, 2027–2030

Sun & Moon details

Sun

Sunrise
Solar noon
Sunset
Daylight duration
12 hr 37 min2 min 46 sec shorter than the previous day

Twilight

Civil twilight
–
Nautical twilight
–
Astronomical twilight
–
New MoonMoon illumination3%
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Saturday, September 12, 2026

View Oak Brook on SavvyTime's time-zone map

Sun

Sunrise
Sunset
Day length
12 hr 37 min2 min 46 sec shorter than the previous day
Solar noon
(52.1° altitude)

Civil twilight

Dawn to dusk
–

Additional twilight

Nautical dawn to dusk
–
Astronomical dawn to dusk
–

Moon

Phase
New Moon (3% illuminated)
Moonrise
Moonset
Previous principal phase
New Moon — Thursday, September 10, 2026 at
Next principal phase
First Quarter — Friday, September 18, 2026 at

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local dateSunriseSunsetDay lengthDaily change
12 hr 37 min2 min 46 sec shorter than the previous day
12 hr 34 min2 min 45 sec shorter than the previous day
12 hr 32 min2 min 46 sec shorter than the previous day
12 hr 29 min2 min 47 sec shorter than the previous day
12 hr 26 min2 min 46 sec shorter than the previous day
12 hr 23 min2 min 47 sec shorter than the previous day
12 hr 20 min2 min 46 sec shorter than the previous day

Weather forecast for Oak Brook

Temperature unit
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Plan around Oak Brook

Upcoming public holidays in Illinois

  1. Columbus Day
  2. Election Day
  3. Veterans Day

Frequently asked questions

What time zone is Oak Brook in?
Oak Brook currently uses Central Daylight Time (CDT). Its IANA time zone is America/Chicago.
When is the next clock change in Oak Brook?
Clocks in Oak Brook move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from CDT (UTC−05:00) to CST (UTC−06:00)
Is Oak Brook currently on daylight saving time?
Oak Brook is observing daylight saving time in 2026
What is the UTC offset in Oak Brook right now?
Oak Brook is currently UTC−05:00