Updated: 12 p.m. Wednesday, August 16

Three cooling centers will reopen today at 1 p.m. for the fourth day in a row of high temperatures in Multnomah County. Since Monday, afternoon temperatures in Portland and Gresham have surpassed 100 degrees. Wednesday's high is forecasted at 102.

The following locations will be open 1 to 8 p.m. through Wednesday evening. Everyone is welcome, including pets. 

  • Multnomah County East, 600 N.E. 8th St., Gresham, staffed by Multnomah County employees
  • Cook Plaza, 19421 S.E. Stark St., Gresham, staffed by Cultivate Initiatives
  • Old Town Cooling Center, 435 N.W. Glisan St., Portland, staffed by Do Good Multnomah 

Both Multnomah County and the city of Portland declared an emergency due to the extreme heat. During the triple digit heat wave, TriMet will not turn anyone away for inability to pay, as long as the rider tells the driver they’re headed to a cooling center.

In addition to the temporary sites, the Lloyd Center is open regular mall hours, 11 a.m. to 7 p.m., offering respite from the heat. A county spokesperson said a nonprofit organization is operating a cooling room with snacks and water in the mall's former Ulta store.

Residents are also encouraged to visit libraries during regular hours, but check the location’s hours before you go. Many county libraries are closed for construction. 

An interactive map of pools, splash pads and cooling centers can be found here.

County officials warn anyone swimming in lakes, rivers, or streams to beware of toxic algae detected on parts of the Willamette River in Portland, including Riverplace Marina downtown, and waterways in Sauvie Island. The algae can be especially harmful to pets. 

"Children and pets should stay out of the water anywhere near where toxic algae has been identified," a county advisory states. "Dogs can get extremely ill and even die within minutes to hours from exposure to the toxins by drinking the water, licking their fur, or eating the toxins from floating mats or dried crust along the shore."

Need to cool off outside? Portland Parks & Recreation is also reminding the public that splash pads and fountains are open and active, as well as misting stations at the following 14 parks:

• Argay Park (3898 NE 141st Ave)

• Glenhaven Park (8000 NE Siskiyou St)

• Floyd Light Park/Rose Petal Fountain (10620 SE Stark St)

• Harney Park (8498 SE 67th Ave)

• Holladay Park (1198 NE Multnomah St)

• Knott Park (2505 NE 117th Ave)

• Lents Park (4603 SE 92nd Ave)

• Lynchwood Park (17301 SE Haig St)

• McKenna Park (7129 N Wall St)

• Mt Scott Community Center (5527 SE 72nd Ave)

• Normandale Park (1260 NE 57th Ave)

• Powell Park (Curb Service south of Powell in SE 22nd Ave)

• Wilshire Park (3350 NE Skidmore St)

• Woodstock Park (4701 SE 47th Ave)

On Monday, PGE advised its customers to reduce power usage as much as possible, noting stress on the power grid during the heat wave could cause power outages.