Hempstead Town officials announced that the following senior centers are cooling sites open to the public from 9 a.m. to 4:45 p.m. through Friday:

Baldwin, 1810 N. Grand Ave., 516-546-7110; Bellmore, 2000 Bellmore Ave., 516-221-9696; Cedarhurst, 200 Cedarhurst Avenue, 516-295-1177, (open until 4:30 p.m.); East Meadow, 1485 Front Street, 516-794-2458; Elmont, 138 Elmont Rd., Elmont, 516-354-4777; Franklin Square, 1182 Martha Place, 516-328-3010; Green Acres, 400 Flower Rd., Valley Stream, 516-872-8810; Levittown, 555 N. Newbridge Rd., 516-433-5454; Merrick, 2550 Clubhouse Road, 516-868-4777; Oceanside, 2900 Rockaway Ave., 516-766-8888; Rosa Parks Senior Center, 2 Babylon Tpke., Roosevelt, 516-867-1612; Salisbury, 460 Salisbury Park Dr., Westbury, 516-333-5440; Uniondale-Hempstead, 840 Uniondale Ave., Uniondale, 516-292-1313; Uniondale-Merrick, 750 Jerusalem Ave., Uniondale, 516-538-5050, and Wantagh, 1150 Seamans Neck Rd., 516-785-8505.

Hours of operation also will be extended at the following pools:

Roosevelt, closing at 7 p.m.; Forest City Park, 8 p.m.; Rath (Franklin Square Park District), 8 p.m.; Walker Memorial, 8 p.m.; Azaela Road, 8 p.m.; Hewlett, 8 p.m.; Blue Grass Lane, closing at 8 p.m.; Slate Lane, 8 p.m.; Malibu Beach Club, 8 p.m., and Town Park at the Sands, 7 p.m.

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Lifeguards will be on duty for an extra hour (until 7 p.m.) at the following beaches:

Town Park Point Lookout; Lido Beach Town Park; Lido West Town Park; Town Park at Sands; Hewlett Point Park; East Atlantic Beach; Atlantic Beach Estates; and Point Lookout Civic Beach