Tens of thousands of people are heading into the weekend without power after deadly storms hit the Pittsburgh area on Tuesday, and Duquesne Light says it will be days until everything is fully restored.

At the storm's peak, Duquesne Light said about 325,000 customers, more than half of the utility's service territory in Allegheny and Beaver counties, lost power. Crews have restored power to over 250,000 homes, but tens of thousands still don't have electricity. 

First Energy also had 380,000 homes without power after the storm. In the company's latest update on Thursday, First Energy said it had restored power to more than 275,000 people, though tens of thousands are still without it on Friday. 

"I understand the frustration many of you have as you are still dealing with the loss of power, downed trees and much, much more, such as loss of food. That frustration is natural but please don't make the city and Duquesne Light crew workers working to preserve power the target of your frustration. I assure you we are working as long and as hard as we can," Pittsburgh Mayor Ed Gainey said at a press conference on Friday. 

After evaluating damage from the "unprecedented" storm, Duquesne Light Company says all power will be restored by 11 p.m. on Tuesday, May 6, though most customers will see the lights come back on before then. 

The utility says it has brought in over 500 additional contractors to help. In the meantime, Duquesne Light is reminding people to stay at least 30 feet away from downed wires, broken poles and other safety hazards.

"Always assume that a downed wire is live and never approach a downed wire or any objects that are around or touching a wire, including puddles," Duquesne Light said.  

The company says it prioritizes public safety hazards first, followed by public health and safety facilities, major circuits, then small neighborhoods and individual homes. 

First Energy on Thursday posted estimated restoration times to its website, with all power expected to be restored on Monday, May 5 at the latest.  

First Energy says it has more than 4,700 "internal and external" resources working around the clock to restore power. It prioritizes repairs that will address the largest number of customers before moving on to more isolated issues. 

"Hundreds of isolated issues affect individual or small numbers of customers. These are the most time-consuming repairs because they require our crews to go to each individual location to make the repairs. Many of the isolated issues include repairs to 'service drops,' which are wires attached to each home to deliver electricity from the neighborhood power line. These wires are often damaged by fallen trees and large branches," First Energy explained. 

Frustration is mounting at a senior living facility in Hampton Township, as residents continue to go without power.

"It's not as difficult as you might think, although we're getting tired of it at this point. It would be nice to have the lights," said Kathleen Nicotra, as she sits outside with her oxygen tubes.

The power went out at Hampton Field Village on Tuesday. Residents say they don't have electricity in their rooms, but a backup generator is keeping some lights and outlets working in the lobby and the first floor.

Luckily for 83-year-old Nicotra, that's where her room is, allowing for the oxygen to keep flowing.

"It comes down the hallway on an extension cord. I use my big tank that I have in the room, and these are little ones that I fill up and then I get out of the room."

While Nicotra lives on the first floor, Norman Foote is on the third and he uses a walker. He said the walk to his room is a long one from the only working elevator. There are two in the building.

"We need the facilities the power provides, and we're not getting it," Foote explained.

Seniors say they were told power would be restored on Friday. When KDKA-TV's Mamie Bah asked Foote if he believed that, he said no, "Because I've heard before other times that they said it was going to be on and they weren't, and they should've given priority to this place." 

"This is almost a hospital," Foote continued. 

KDKA-TV reached out to Duquesne Light to ask about the senior living facility but didn't hear back. Presbyterian SeniorCare Network, which manages the senior facility, sent this statement: 

"We can state that our emergency procedures are being followed, which include backup generators operating in the building and team members doing everything in their power to make sure residents are safe, secure, and comfortable during this outage."

There's no mention of when electricity will be restored.

Seniors say it's time. They don't want to spend another night in the dark.

"I spend a lot of time watching the news, so without that, I'm pretty lost," said Foote.

"We would like to see some other activities you can do when the lights are on, you know, it's hard to do things," explained Nicotra.

The facility has a cooling trailer outside to keep the food cold. 

It's a testament to the strength of Tuesday's storm that three days later, crews are still cutting trees off of houses. That's the case in many places, including Hampton Township.

Landlord Ron Rice got a call on Wednesday from tenants about the destruction trees caused. One fell on top of the house. While his tenants were inside, they are OK. 

"Are tenants are in there now," said Rice.

The neighboring homeowners are also cleaning up. Large trees take over their front yards as well. Some have power, but others still do not, including Rice's property.

"It was quite a storm," said Rice.

Duquesne Light is reminding residents without power to stay safe. Use flashlights or battery-operated lanterns, not candles, for lighting. Keep generators far from buildings and don't run them in confined spaces like garages, because it could lead to carbon monoxide poisoning. People are encouraged to continue checking on elderly and vulnerable people who might need extra help.

Duquesne Light is also warning customers to look out for scams. The company says there are "bad actors who attempt to take advantage of difficult situations" by pretending to be with the utility. If you're unsure whether Duquesne Light has actually called you, hang up and call 888-393-7100 to verify.