The Arlington Heights Memorial Library is open during the following hours:
Monday through Friday: 9 a.m.–10 p.m.
Saturday: 9 a.m.–8 p.m.
Sunday: 11 a.m.–8 p.m.
The library is closed on those holidays approved annually by the Board of Library Trustees. It also may close for special circumstances or due to an emergency.
Selected services are also available electronically 24/7, and the drive-up window hours may be extended to provide service.