Diamond Bar, CA community calendar
Explore upcoming community events, local activities, public meetings, concerts, festivals, and seasonal things to do in Diamond Bar, CA. Verify final times, locations, and availability with the organizer before attending.
Upcoming schedule
Sunday, September 13, 2026
Diamond Bar's free Grandparents Day Celebration will run from 10 a.m. to noon Sunday, September 13, at the Diamond Bar Center, 1600 Grand Avenue. The event includes indoor and outdoor games, face painting, dancing, a ph...
Tuesday, September 15, 2026
The Diamond Bar City Council is scheduled to meet at 6:30 p.m. Tuesday, September 15, in the South Coast Air Quality Management District Auditorium at 21865 Copley Drive. Residents may attend in person, join online or b...
Saturday, September 19, 2026
The City will hold an informational presentation on Measure Q from 9 to 11 a.m. Saturday, September 19, in the City Hall Windmill Room at 21810 Copley Drive. The presentation will explain the City's financial challenges...
Sunday, September 20, 2026
Beerfest and Taste of Diamond Bar is scheduled for 3 to 7 p.m. Sunday, September 20, at the Grand View Ballroom, 1600 Grand Avenue. Tickets are $55, and the event is open only to adults age 21 and older. The program inc...
Monday, September 21, 2026
An evening Measure Q informational presentation is scheduled for 6:30 to 8:30 p.m. Monday, September 21, in the City Hall Windmill Room at 21810 Copley Drive. City staff will discuss the City's financial challenges and...
Tuesday, September 22, 2026
The Diamond Bar Planning Commission is scheduled to meet at 6:30 p.m. Tuesday, September 22, in the City Hall Windmill Room at 21810 Copley Drive. Agendas are posted the Friday before the meeting. Residents may attend i...
Wednesday, September 23, 2026
Walnut/Diamond Bar Sheriff's Station personnel will offer free catalytic converter etching from 9 to 11 a.m. Wednesday, September 23, at Calvary Chapel Golden Springs, 22324 Golden Springs Drive. The vehicle identificat...
Thursday, September 24, 2026
The Diamond Bar Parks and Recreation Commission is scheduled to meet from 6:30 to 8 p.m. Thursday, September 24, in the City Hall Windmill Room at 21810 Copley Drive. Residents may attend in person or send written comme...
Monday, September 28, 2026
The City will hold its evening Measure Q informational presentation from 6:30 to 8:30 p.m. Monday, September 28, in the City Hall Windmill Room at 21810 Copley Drive. The session will explain the City's financial challe...
Local event questions
This guide currently organizes 9 upcoming events connected to Diamond Bar, CA, including public community activities and local happenings when those records are available.
LocalNewsAndEvents refreshes the Diamond Bar, CA event guide as public-safe schedules are added or changed. Always verify final event details with the organizer before attending.
Use the dated event cards on this page to browse upcoming things to do in Diamond Bar, CA. Events are ordered by date and link to individual detail pages with available local context.
Not necessarily. Admission, registration, age restrictions, and availability vary by event. Check the individual event details and the organizer's current information before making plans.
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