Regular Weekend Masses

All of our Masses are celebrated in our new Church building at 403 North Main St. in O'Fallon. The original church building, which we refer to as our Chapel, is primarily used for devotional prayers. Several of our weekly Masses are celebrated in the Motherhouse of the Sisters of the Most Precious Blood, which is across the street from Assumption's property, at 204 North Main St. 

Regular Weekend Masses

Saturday Vigil: 5pm

Sunday: 8am, 10am, 12-Noon, 5:30pm (Life Teen, All are welcome)

Daily Masses

Monday-Friday: 6:30am (Motherhouse), 8am

Saturday: 9am (Motherhouse)

Holy Day Masses

Vigil for Feast: 5pm

Feast Day: 6:30am (Motherhouse), 8am and 7pm

Feast Day Mass times are subject to change. Please refer to bulletin for special Mass schedules.

Sacrament of Reconciliation

Saturday: 4pm-4:45pm

Regular Devotions in our Chapel

(white-stone, original church building at 3rd St.)

24 Hour Prayer Chapel: Enter via the north Chapel side/ramp entrance; please contact the parish office for entry code.

Eucharistic Adoration/Benediction: Tuesdays 8:30am - 6:30pm

Mother of Perpetual Help Devotion: Tuesdays 6:30pm

Rosary: Thursdays after Mass, and 30 minutes before all Sunday Masses

Stations of the Cross: Tuesdays (on your own) & Fridays during Lent (communally)

Votive Candles for Prayer Intentions: Available near Pieta statue, right rear chamber of Chapel