Current Time in O'Fallon
United States · America/Chicago · Pop. 85,040
Sun & Daylight
Sunrise
05:59 AM
Sunset
08:19 PM
Solar Noon
01:09 PM
Day Length
-9.7h
Weather
⛅
21.5°C
Partly cloudy
Feels Like
22.7°C
Humidity
70%
Wind
5.2 km/h
UV Index
4.75
Timezone
- IANA ID
- America/Chicago
- Abbreviation
- CDT
- UTC Offset
- UTC-05:00
- DST Active
- Yes
- Next Change
- Nov 1, 2026
- Elevation
- 165m