Time in O'Fallon, United States now
11:02:41 PM
Saturday, September 12, 2026
CDT · UTC-05:00
Time zone
CDT
UTC-05:00
America/Chicago
Daylight saving
On (DST in effect)
Back 1h on
November 1, 2026
Sun
↑ 6:39 AM ↓ 7:11 PM
Day length 12h 32m
Solar noon 12:55 PM
Time difference
Calculating the difference from your location…
Nearby cities in Illinois (8)
O'Fallon facts
- Country
- United States
- Region
- Illinois
- Coordinates
- 38.5923, -89.9112
- Population
- 29,002
Frequently asked
What time is it in O'Fallon right now?
The current local time in O'Fallon is shown above and updates live every second. O'Fallon is on CDT (UTC-05:00).
What time zone is O'Fallon in?
O'Fallon uses the America/Chicago time zone, currently CDT (UTC-05:00).
Is O'Fallon on daylight saving time?
Yes. O'Fallon is currently observing daylight saving time (CDT, UTC-05:00). Clocks change next on November 1, 2026.
What is the time difference between O'Fallon and New York?
New York is +1h relative to O'Fallon (New York is currently 12:02 AM).
Live clock; time-zone & DST data from the IANA Time Zone Database.
