Current Time in O'Fallon, Illinois, USA

7:38:54 AM

07:38:54

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

America/Chicago

Clock format
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Time zone details

O'Fallon is observing daylight saving time in 2026

Daylight in O'Fallon

Sunrise6:38 AMSolar noon12:55 PMSunset7:12 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
Country currency
US Dollar (USD)

Practical

Languages
English, Spanish, Hawaiian, French
Dialing code
+1
Population
29,002

Geography

Geographic coordinates
38° 35' N / 89° 54' W
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Convert O'Fallon time

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Popular conversions (current offsets)

O'Fallon to EDT 1 hour aheadO'Fallon to MDT 1 hour behindO'Fallon to PDT 2 hours behindO'Fallon to AKDT 3 hours behindO'Fallon to HST 5 hours behindO'Fallon to ADT 2 hours ahead

All times shown relative to O'Fallon local time

Clock changes in O'Fallon

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 34 min2 min 28 sec shorter than the previous day

Twilight

Civil twilight
–
Nautical twilight
–
Astronomical twilight
–
New MoonMoon illumination3%
View full Sun & Moon detailsHide full Sun & Moon details

Saturday, September 12, 2026

View O'Fallon on SavvyTime's time-zone map

Sun

Sunrise
Sunset
Day length
12 hr 34 min2 min 28 sec shorter than the previous day
Solar noon
(55.4° 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 34 min2 min 28 sec shorter than the previous day
12 hr 31 min2 min 28 sec shorter than the previous day
12 hr 29 min2 min 28 sec shorter than the previous day
12 hr 26 min2 min 28 sec shorter than the previous day
12 hr 24 min2 min 28 sec shorter than the previous day
12 hr 21 min2 min 29 sec shorter than the previous day
12 hr 19 min2 min 28 sec shorter than the previous day

Weather forecast for O'Fallon

Temperature unit
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Plan around O'Fallon

Time context

O'Fallon follows the same clock and daylight-saving rules as Chicago

Current time offsetUTC−05:00 (CDT)

View time differences

Upcoming public holidays in Illinois

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

Nearby places

Fairview HeightsSaint Clair CountyUSA7 kmWBellevilleSaint Clair CountyUSA10 kmSWCollinsvilleMadison CountyUSA11 kmNWEast Saint LouisSaint Clair CountyUSA21 kmWGranite CityMadison CountyUSA24 kmNWEdwardsvilleMadison CountyUSA25 kmNSt. LouisCity of Saint LouisUSA25 kmWLemaySaint Louis CountyUSA33 kmWSpanish LakeSaint Louis CountyUSA34 kmNWUniversity CitySaint Louis CountyUSA35 kmWClaytonSaint Louis CountyUSA36 kmWOakvilleSaint Louis CountyUSA37 kmW
Browse places in USA

Frequently asked questions

What time zone is O'Fallon in?
O'Fallon currently uses Central Daylight Time (CDT). Its IANA time zone is America/Chicago.
When is the next clock change in O'Fallon?
Clocks in O'Fallon 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 O'Fallon currently on daylight saving time?
O'Fallon is observing daylight saving time in 2026
What is the UTC offset in O'Fallon right now?
O'Fallon is currently UTC−05:00