Confirmed via official St. Charles Parks and Recreation park page: McNair Park's Day Camp Area has 4 shared tennis/pickleball courts. St. Charles Parks & Rec also runs organized pickleball leagues there (Tue/Thu evenings). Court count and hours per official site; address partially confirmed via official site text ("Day Camp Area: 3200 Droste").
McNair Park has 4 tennis/pickleball courts (Day Camp Area, shared lines).
McNair Park offers outdoor pickleball.
Free
Yes — McNair Park is open to the public.
Dawn - midnight (Apr 1-Nov 14); Dawn - 10pm (Nov 15-Mar 31), per official park page
McNair Park is located at 3200 Droste Rd, St. Charles, MO 63301.
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