Geographic position of O'Fallon
O'Fallon is located in the Northern Hemisphere and the Western Hemisphere. Its coordinates are 38.8106° N, 90.6999° W.
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Distance from the Equator:
about 4,320 km (2,684 mi)
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Distance from the North Pole:
about 5,698 km (3,541 mi)
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Distance from the South Pole:
about 14,339 km (8,910 mi)
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Distance from the Prime Meridian:
about 7,868 km (4,889 mi) west
O'Fallon lies in the temperate latitude zone. This latitude affects daylight length, seasonal variation and how local solar time compares with standard clock time.
Population Ranking of O'Fallon
With a population of 85,040, O'Fallon ranks as the 463rd most populous city in United States, out of 3,397 cities tracked on this site.
Nearest Airport to O'Fallon
St. Louis Lambert International Airport (STL / KSTL) is a major international airport located about 29 km (18 mi) from O'Fallon.
Current local time at the airport is 06:28:12.
Daylight saving time changes in O'Fallon
O'Fallon uses the IANA time zone identifier America/Chicago. The current local offset is UTC-5 / CDT.
2026
Previous change: Daylight saving time started
- The offset changed from UTC-6 / CST to UTC-5 / CDT.
- The clock was moved forward from 02:00 to 03:00 local time.
2026
Next change: Standard time starts
- The offset will change from UTC-5 / CDT to UTC-6 / CST.
- The clock will be moved back from 02:00 to 01:00 local time.
Best Time to Call O'Fallon
Business hours in O'Fallon (9 AM-5 PM local time) fall at these local times elsewhere:
- New York: 10:00 AM - 6:00 PM ( Convenient)
- Los Angeles: 7:00 AM - 3:00 PM ( Partial overlap)
- London: 3:00 PM - 11:00 PM ( Partial overlap)
- Dubai: 6:00 PM - 2:00 AM (next day) ( Partial overlap)
- Mumbai: 7:30 PM - 3:30 AM (next day) ( Partial overlap)
- Tokyo: 11:00 PM - 7:00 AM (next day) ( Outside normal hours)
- Sydney: 12:00 AM (next day) - 8:00 AM (next day) ( Outside normal hours)
Times shown reflect current UTC offsets and may shift by up to an hour around daylight saving transitions.
Time Difference from O'Fallon
Compare time in O'Fallon with major cities worldwide.
Time now in other cities in United States
Frequently Asked Questions
What time zone is O'Fallon in?
O'Fallon follows the America/Chicago time zone, the official IANA identifier used by computers and databases worldwide to track local time accurately. Right now, this puts O'Fallon at UTC-5.
What time is it in O'Fallon right now?
The current local time in O'Fallon is 06:28:12 on Wednesday, 26 August 2026. This page updates automatically, so refreshing it will always show the live time.
Does O'Fallon observe daylight saving time?
Yes. O'Fallon is currently observing daylight saving time, which temporarily shifts the clock forward by one hour compared to standard time.
How far ahead or behind UTC is O'Fallon?
O'Fallon is currently UTC-5, meaning local time is 5 hours behind Coordinated Universal Time (UTC).
What is the nearest airport to O'Fallon?
St. Louis Lambert International Airport (STL) is the nearest airport to O'Fallon, located about 29 km away. The current local time at the airport is 06:28:12.
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