LOS ANGELES — Smoke from the Bobcat and El Dorado fires continues to blanket Southern California, prompting the South Coast Air Quality Management District to issue its 10th straight day of advisories.

Some residents of Los Angeles County, growing weary of the thick, hazy air, say they’re at their wits’ end.

“You can barely see to the end of the block,” Pasadena resident Stewart Pajares said Wednesday.

Pajares said he felt burning in his eyes and lungs, and when asked what concerned him most about the region’s poor air quality, he said, “breathing.”

Onshore winds will likely begin moving smoke out of the South Coast air basin Wednesday afternoon, the South Coast AQMD said, but “modest smoke impacts” from Northern and Central California fires are likely to persist. Current air quality readings are still lingering in the 150-200 range, which is considered unhealthy by the Environmental Protection Agency.

EPA officials said they are working hard to keep people informed about the risks of the poor air.

“We do need to learn to live with smoke,” EPA air resource advisor Katie Stewart said. “And it’s unfortunate, but we need to be smoke-ready every year.”

Stewart said home improvements such as window caulking and replacing worn-out weather stripping can help prevent smoke and poor-quality air from entering houses.

She also said residents with HVAC systems can set the air to circulate so it’s not being pulled in from outside, and recommended that people without those systems use portable air filters to create “clean air shelters” in one or two rooms of their homes.

But after several days of smoky air, such filters are increasingly tough to come by: Local hardware stores have seen a run on customers looking for air purifiers.

“We have some left,” said Rosie Gonzalez of Virgil Hardware in Glendale, “but it’s down to a really limited quantity.”

Financial factors are also a challenge. Portable air filters — if you can get your hands on one — typically run between $100 and $150, Stewart said.

That has left many low-income residents out of luck, particularly since the city’s smoke relief centers opened for only one day last week and haven’t reopened.

City of Los Angeles Public Information Officer Rose Watson said the Department of Recreation and Parks is working with the Emergency Management Division to reopen relief centers this week, but locations and availability haven’t yet been announced.

The county’s estimated 66,000 homeless residents also have limited recourse from the unhealthy air. “It’s going to be worse for them in proportion to the amount of extra pollution they experience,” said Suzanne Paulson, director of the Center for Clean Air at UCLA, “because they’re not getting any sort of protective effects from being inside.”