Barry Nix, 48,works on the back of a D.C. sanitation truck. (Sarah L. Voisin/THE WASHINGTON POST)

Crews will begin one hour earlier than usual — at 6 a.m. — on Wednesday, Thursday and Friday, according to the D.C. Department of Public Works. Residents can put their trash and recycling out beginning at 6 p.m. the night before pickup.

The earlier start time is intended to keep workers, and trash, out of the intense heat and humidity.

Temperatures are expected to reach about 95 degrees Wednesday, but high humidity could make it feel as hot as 105 degrees in some areas. The National Weather Service has issued a heat advisory for the region.

Maggie Fazeli Fard

Metro tips

Commuting today? Dr. Gridlock has tips for keeping cool. And WMATA has suspended its “no drinking” policy for Wednesday and Thursday, to allow commuters on the Metro to drink water.

Cooling centers open in the area

Rockville in Montgomery County has opened four cooling centers for residents due to Wednesday’s high temperatures. The centers are located at the following facilities and are open during normal business hours:

Lincoln Park Community Center, 357 Frederick Ave.; Rockville Senior Center, 1150 Carnation Drive; Thomas Farm Community Center, 700 Fallsgrove Drive; Twinbrook Community Recreation Center, 12920 Twinbrook Parkway.

Victor Zapana

Prince George’s County opened seven air-conditioned cooling locations, including two reserved for seniors only, and five others for the general public.

Cooling centers are open for seniors at the following locations:

New Carrollton Nutrition Center, 6016 Princess Garden Parkway, Lanham, MD from 10 a.m. to 5 p.m.; Camp Springs Senior Activity Center, 6420 Allentown Road, Camp Springs, MD from 9 a.m. to 3 p.m.;

Cooling centers open for the General Public at the following County locations from 10 a.m. to 9 p.m.:

Rollingcrest-Chillum Community Center, 6120 Sargent Road, Chillum, MD; Hillcrest Heights Community Center, 2300 Oxon Run Drive, Temple Hills, MD; Oakcrest Community Center, 1300 Capitol Heights Boulevard, Capitol Heights, MD; Fairland Sports and Aquatics Center, 13820 and 13950 Old Gunpowder Road, Laurel, MD; Palmer Park Community Center, 7720 Barlowe Road, Landover, MD

— Miranda S. Spivack

District pool hours extended

More than a dozen District pools will extend operating hours until 8:30 and 9:30 p.m. Wednesday through Friday because of expected high temperatures. City officials, however, are encouraging residents to stay indoors.

The following pools will be open until 8:30 p.m.:

Banneker Recreation Center Pool in Ward 1; Jelleff Recreation Center Pool in Ward 2; Harry Thomas Sr. Pool in Ward 5; Rosedale Pool in Ward 6; Benning Park Pool in Ward 7; Anacostia Pool, Fort Stanton Pool and Oxon Run Pool in Ward 8.

The following pools will be open until 9:30 p.m.:

Volta Park Pool and Francis Pool in Ward 2; Upshur Recreation Center Pool in Ward 4; Theodore Hagans Jr. Pool in Ward 5; Fort Dupont Pool in Ward 7; and Barry Farm Pool in Ward 8.

Nikita Stewart

Find the latest weather forecast and a heat wave survival guide at the Capital Weather Gang.