Firefighters clean up after the Eaton Fire in California. Health experts recommend wearing particle-filtering masks, goggles, gloves, and other personal protective equipment while cleaning up the potentially toxic ash and smoke after the burn.
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DAVID PASHAEE/Middle East Images/AFP via Getty
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Topline:
Previous scientific research shows that the detritus left behind after a fire can be laden with toxic compounds and gases, from heavy metals to burned plastics to asbestos.
Why it matters: Exposure to the ash and even air can cause short-term health impacts, from the runny eyes Ronaghi experienced to respiratory issues and mor
Keep reading ... for tips on how to protect yourself while cleaning up after the fires.
Reza Ronaghi lost his home in the Los Angeles wildfires last week.
"Not a single house survived in our two-block area," he said.
Ronaghi is a pulmonologist at the University of California, Los Angeles. So he is well-acquainted with the health risks associated with breathing in wildfire smoke. But even he, a medical professional, was shocked to see how many potential health risks lurked in the detritus, ash, and smoke left behind after the fires.
"This is not just a regular fire," he said. The ash contains material from "thousands of houses and all the material the house was made of, the inside, the appliances, the roof, the list goes on."
But what alarmed him more was how little health and safety guidance officials offered to residents returning to the neighborhood to see what was left of their homes.
He and several neighbors were allowed back into their Pacific Palisades neighborhood a few days after the burn; the ground was still smoking. He wore an N95 mask, but quickly realized he should have more thoroughly protected himself — with gloves, goggles, a respirator mask like those used when working with chemicals, and long clothes that he could remove and bag immediately after leaving the area.
After just 20 or 30 minutes, he said, his eyes were watering and his nose was irritated. Later on, he realized his skin was irritated where it had accidentally been exposed.
Previous scientific research shows that the detritus left behind after a fire can be laden with toxic compounds and gases, from heavy metals to burned plastics to asbestos. Exposure to the ash and even air can cause short-term health impacts, from the runny eyes Ronaghi experienced to respiratory issues and more.
But it's not just the immediate health issues that concern Ronaghi. The exposure people experience now, he worries, could lead to health effects down the road.
Exposure to toxic materials left behind after houses burn can be "actually much more dangerous than what smoke may do to your lungs alone," he said.
So as people return to their homes, he wants them to take care — because "right now, we're talking about long-term consequences."
It matters what materials have burned
Wildfire smoke and ash can be dangerous to people's health even when a fire burns primarily trees and plants. But fires that burn through man-made materials are often filled with a more toxic mix. After California's 2018 Camp Fire, researchers found abnormally high concentrations of lead downwind of the burn, which they suspect came from the houses that went up in smoke. Researchers in Los Angeles have found preliminary suggestions that the ash there has high concentrations of metals, as well. Exposure to lead can lead to short-term problems like headaches or dizziness. High exposures have been associated with issues from cognitive trouble to reproductive and cardiovascular problems.
It's not just metals. Appliances, coolant fluid, polyester curtains, cleaning products — all the manmade parts of a house can produce a rich suite of health-harming compounds and gases, like benzene and formaldehyde, and polycyclic aromatic hydrocarbons, or PAHs.
A chimney stands against the back wall of a house reduced to ashes in the Palisades Fire in Malibu, California. Experts warn the smoke, ash and debris left after the fires can pose short- and long-term health risks.
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CECILIA SANCHEZCECILIA SANCHEZ/AFP via Getty Images
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AFP
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But research on the long-term effects of wildfire smoke has only recently begun.
Surveys after the Lahaina wildfires in 2023 found that residents exposed to smoke and ash experienced increases in heart, kidney, and mental health issues. An EPA-led study exposed mice to smoke from army burn pits, which include many materials that might be found in burning homes and cars; the mice exposed to the smoke showed signs of inflammation and lung injury.
In the most damaged and contaminated areas, officials will usually send in debris-removal teams to clear away the most dangerous waste and ash. But Ronaghi stressed that anyone visiting the area before that process is complete should take precautions.
He recommends anyone visiting burn sites use N95 masks or respirators, if possible, along with goggles to protect their eyes (ski or swim goggles would work in a pinch, he says); gloves; and long clothes that they can remove before returning to wherever they're staying. Bag those clothes during transport, and wash them immediately upon arriving home, other experts suggest, to avoid bringing hazards into your living space.
Even those whose homes are still standing, including those far from the front lines of the fire, may be contending with ash and smoke. Research conducted after the 2021 Marshall Fire in Boulder, Colo., found that "smoke managed to penetrate indoors and through cracks underneath doors and windows," in homes downwind of the fire, said Joost de Gouw, a University of Colorado, Boulder atmospheric chemist and author of one of the studies. Residents reported health disturbances, from headaches to respiratory problems, for weeks afterward.
Hazardous gases associated with the wildfire smoke, such as benzene and naphthalene, could be detected in homes downwind of the Marshall Fire long after the burns were put out. Those gases, another study suggested, could have been absorbed by textiles, mattresses, and maybe even the wood framing and drywall in homes.
Those gases take time to dissipate, de Gouw said, during which period residents may still be exposed.
Firefighters spray flames from the Palisades Fire in Los Angeles, California. The smoke and ash from the fires spread across the city — and now residents are worried about how to clean up safely.
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Getty Images North America
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After the fire, "all of these gases that were absorbed into building materials were slowly being rereleased through indoor air, where you were smelling them," he said. "That process took about five weeks before everything ventilated out again."
How to clean up
Even for those farther from the burned neighborhoods, the cleanup could be dangerous — and could stretch over weeks.
Because the leftover ash and smoke can contain dangerous components, experts who spoke with NPR recommend protecting yourself thoroughly whenever you clean your home if it was affected by wildfire smoke.
"People who are going back to these homes should wear N95 masks to protect themselves," said Colleen Reid, a health geographer at the University of Colorado, Boulder, who worked on one of the Marshall Fire smoke studies. "We found that when people cleaned, it resuspended that ash," lifting it back into the air where people might inhale it.
Reid also suggests wearing gloves and long-sleeved clothes and pants while cleaning.
She said scientists are still working on coming up with rigorously tested recommendations for best cleaning practices after wildfires. But a 2023 study shows that cleaning a home's hard surfaces by dusting, wiping down with damp cloths, and mopping can effectively lower the concentrations of smoke-associated gases.
Reid suggests "using a HEPA-filter vacuum, and really cleaning all the surfaces — like wiping them down to try to remove those sources of the chemicals that are off-gassing."
More porous surfaces, like couches and other textiles, can persist as an ongoing source of exposure; Reid suggests replacing them, if possible.
de Gouw and other researchers found that constantly running air filters with activated carbon lowered the gas concentrations in those first weeks after the fire. But concentrations went back up when the air filters were stopped — so "it's important to keep them running for those few weeks," he said.
The message, said de Gouw, is to clean everything one can carefully and thoroughly, because the smoke can affect nearly every part of a home — even in houses far from the fire line. Any efforts to lower the dose of potentially dangerous smoke and ash byproducts can help protect people, he said.
Ronaghi is still dealing with the fallout of the fires. For now, his family is dealing with the loss of their home and figuring out how, and where, to rebuild their life.
But as he processes, he wants to make sure others understand the ongoing risks.
"Most of the time we hear about fires and we say, okay, you know, we'll be okay. We're kind of removed from it," he said.
But for people across Los Angeles, it's all too possible to be exposed to health-damaging toxins right now: "And you won't know for a very, very, very long time," he said. "That's why it's super important" to protect yourself.
Jorge "Coqui" H. Rodriguez speaks at a press conference outside Dodger Stadium on Wednesady to demand the Dodgers not visit the White House following their 2025 World Series win.
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J.W. Hendricks
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Topline:
Less than 24 hours before season opener, longtime Dodgers fans demand the team divest from immigration detention centers and decline the White House visit.
More details: More than 30 people joined Richard Santillan on Wednesday morning for a press conference held near 1000 Vin Scully Drive to convey a message directly to the team. “We are demanding that the Dodgers stop participating in funding of inhumane treatment of families and do not go to the White House to celebrate with the criminal in chief,” Evelyn Escatiola told the crowd. “Together we have the power to make a change.”
Since 1977, Richard Santillan has been to every Opening Day game at Dodger Stadium.
“The tradition goes from my father, to me, to my children and grandchildren. Some of my best memories are with my father and children here at Dodger Stadium,” Santillan told The LA Local, smiling under the shade of palm trees near the entrance to the ballpark Wednesday morning. He was there to protest the team less than 24 hours before Opening Day.
Santillan, like countless other loyal Dodgers fans, is grappling with his fan identity over the team’s decision to accept an invitation to the White House and owner Mark Walter’s ties to ICE detention facilities.
More than 30 people joined Santillan on Wednesday morning for a press conference held near 1000 Vin Scully Drive to convey a message directly to the team.
“We are demanding the Dodgers stop participating in funding of inhumane treatment of families and do not go to the White House to celebrate with the criminal in chief,” Evelyn Escatiola told the crowd. “Together, we have the power to make a change.”
Escatiola, a former dean of East Los Angeles College and longtime community organizer, urged fans to flex their economic power by “letting the Dodgers know that we do not support repression.”
Jorge “Coqui” Rodriguez, a lifelong Dodgers fan, spoke to the crowd and called on Dodgers ownership to divest from immigration detention centers owned and operated by GEO Group and CoreCivic.
Jorge Coqui H Rodriguez speaks at a press conference outside Dodger Stadium on March 25, 2026, to demand the Dodgers not to visit the White House following their 2025 World Series win.
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J.W. Hendricks
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The LA Local
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In a phone interview a day before the protest, Rodriguez told The LA Local he did not want the Dodgers using his “cheve” or beer money to fund detention centers.
“They can’t take our parking money, our cacahuate money, our cheve money, our Dodger Dog money and invest those funds into corporations that are imprisoning people. It’s wrong,” Rodriguez said.
Rodriguez considers the Dodgers one of the most racially diverse teams and said the players need to support fans at a time when heightened immigration enforcement has become more common across L.A.
The team’s 2025’s visit to the White House drew ire from the largely Latino fan base, citing the Trump administration’s ongoing attacks on immigrants.
The team again came under fire after not releasing a statement on the impacts of ICE raids on its mostly Latino fan base at the height of immigration enforcement last summer. The team later agreed to invest $1 million to support families affected by immigration enforcement.
When he learned the Dodgers were pledging only $1 million to families in need, Rodriguez called the amount a “slap in the face.”
“These guys just bought the Lakers for billions of dollars and they give a million dollars to fight for legal services? That’s a joke,” Rodriguez said. “They need to have a moral backbone and not be investing in those companies.”
According to reporting from the Los Angeles Times, former Dodgers pitcher Clayton Kershawsaid last week that he is looking forward to the trip.
“I went when President [Joe] Biden was in office. I’m going to go when President [Donald] Trump is in office,” Kershaw said. “To me, it’s just about getting to go to the White House. You don’t get that opportunity every day, so I’m excited to go.”
The Dodgers have yet to announce when their planned visit will take place.
Santillan sometimes laments his decision to give up his season tickets in protest of the team. His connection to the stadium and the memories he has made there with family and friends will last a lifetime, he said. On Thursday, he will uphold his tradition and be there for the first pitch of the season, but with a heavy heart.
“It’s a family tradition, but the Dodgers have a lot of work to do,” he said.
Destiny Torres
is LAist's general assignment reporter and brings you the top news you need for the day.
Published March 25, 2026 3:38 PM
The warmer weather and high water flow are causing an early outbreak of black flies in the San Gabriel Valley.
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Courtesy SGV Mosquito and Vector Control District
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Topline:
The warmer weather and high water flow are causing an early outbreak of black flies in the San Gabriel Valley, according to officials.
What are black flies? Black flies are tiny, pesky insects that often get mistaken for mosquitoes. The biting flies breed near foothill communities like Altadena, Azusa, San Dimas and Glendora. They also thrive near flowing water.
What you need to know: Black flies fly in large numbers and long distances. When they bite both humans and pets, they aim around the eyes and the neck. While the bites can be painful, they don’t transmit diseases in L.A. County.
A population spike: Anais Medina Diaz, director of communications at the SGV Mosquito and Vector Control District, told LAist that at this time last year, surveillance traps had single-digit counts of adult black flies, but this year those traps are collecting counts above 500.
So, why is the population growing? Diaz said the surge is unusual for this time of year.
“We are experiencing them now because of the warmer temperatures we've been having,” Diaz said. “And of course, all the water that's going down through the river, we have a high flow of water that is not typical for this time of year.”
What officials are doing: Officials say teams are identifying and treating public sources where black flies can thrive, but that many of these sites are influenced by natural or infrastructure conditions outside their control.
How to protect yourself: Black flies can be hard to avoid outside in dense vegetation, but you can reduce the chance of a bite by:
Wearing loose-fitted clothing that covers the entire body.
Wearing a hat with netting on top.
Spraying on repellent, but check the label. For a repellent to be effective, it needs to have at least 15% DEET, the only active ingredient that works against black flies.
Turning off any water features like fountains for at least 24 hours, especially in foothill communities.
See an uptick in black flies in your area? Here's how to report it
SGV Mosquito and Vector Control District Submit a tip here You can also send a tip to district@sgvmosquito.org (626) 814-9466
Greater Los Angeles Vector Control District Submit a service request here You can also send a service request to info@GLAmosquito.org (562) 944-9656
Orange County Mosquito and Vector Control Submit a report here You can also send a report to ocvcd@ocvector.org (714) 971-2421 or (949) 654-2421
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Robert Garrova
explores the weird and secret bits of SoCal that would excite even the most jaded Angelenos. He also covers mental health.
Published March 25, 2026 3:28 PM
Jeremy Kaplan and Florence at READ Books in Eagle Rock.
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Courtesy Jeremy Kaplan
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Topline:
Local favorite mom and pop shop READ Books in Eagle Rock is facing displacement due to a steep rent hike. The owners say they’re just one of several small businesses along Eagle Rock Boulevard struggling to keep up with lease increases.
The backstory: Over the past 19 years, many in the neighborhood have come to love READ Books for its eclectic collection of used titles and their shop dog Florence.
What happened? The building where Kaplan and his wife Debbie rent was recently sold and the rent increased by more than 130% to $2,805 a month, Kaplan said. He told LAist it was an increase his small business simply could not absorb.
What's next? While he looks for a new spot, Kaplan says he’s forming a coalition of local businesses and activist groups to see what can be done to help other small businesses facing similar displacement. He wants to address the displacement issue for businesses like his, which have made Eagle Rock the distinctive neighborhood that it is today.
Read on... for what small businesses can do.
A local favorite mom-and-pop bookshop in Eagle Rock is facing displacement due to a steep rent hike. The owners say theirs is just one of several small businesses along Eagle Rock Boulevard struggling to keep up with lease increases.
Over the past 19 years, many in the neighborhood have come to love READ Books for its eclectic collection of used titles and shop dog Florence.
Co-owner Jeremy Kaplan said it’s been a delight to grow with the community over the years.
“Like seeing kids come back in, who were in grade school and now they’re in college,” Kaplan said.
But the building where Kaplan and wife Debbie rent was recently sold, and the rent increased by more than 130% to $2,805 a month, Kaplan said. He told LAist it was an increase his small business simply could not absorb.
Kaplan said he originally was given 30 days notice of the rent increase. After some research, assistance from Councilmember Ysabel Jurado’s office and some pro-bono legal help, Kaplan said he pushed back and got the 90-day notice he’s afforded by state law.
California Senate Bill 1103 requires landlords to give businesses with five or less employees 90 days’ notice for rent increases exceeding 10%, among other protections.
Systems Real Estate, the property management company, did not immediately respond to LAist’s request for comment.
What can small businesses do?
Nadia Segura, directing attorney of the Small Business Program at pro bono legal aid non-profit Bet Tzedek said California law does not currently allow for rent control for commercial tenancies.
Outside of the protections under SB 1103, Segura said small businesses like READ Books don’t have much other recourse. And even then, commercial landlords are not required to inform their tenants of their protections under the law.
“There’s still a lot of people that don’t know about SB 1103. And then it’s very sad that they tell them they have these rent increases and within a month they have to leave,” Segura said.
She said her group is seeing steep rent hikes like this for commercial tenants across the city.
“We are seeing this even more with the World Cup coming up, the Olympics coming up. And I will say it was very sad to see that also after the wildfires,” Segura said.
Part of Bet Tzedek’s ongoing work is to advocate for small businesses, working with landlords who are increasing rents to see if they are willing to give business owners longer leases that lock in rents.
While he looks for a new spot, Kaplan says he’s forming a coalition of local businesses and activist groups to see what can be done to help other small businesses facing similar displacement. He wants to address the displacement issue for businesses like his, which have made Eagle Rock the distinctive neighborhood that it is today.
Owl Talk, a longtime Eagle Rock staple selling clothing and accessories in a unit in the same building as READ Books, is facing a “more than double” rent increase, according to a post on their Instagram account.
Kaplan said he’s been in touch with the office of state Assemblywoman Jessica Caloza and wants to explore the possibility of introducing legislation to set up protections for small businesses like his, including rent-control measures or a vacancy tax for landlords. Kaplan said he also reached out to the office of state Sen. Maria Durazo.
By his count, Kaplan said there are about a dozen businesses within surrounding blocks that are at risk of closing their doors or have shuttered due to rent increases or other struggles.
When READ Books was founded during the Great Recession, Kaplan said he knew it was a longshot to open a bookstore at the same time so many were struggling to stay in business.
“It was kind of interesting to be doing something that neighborhoods needed. That was important to me growing up, that was important to my children, that was important to my wife growing up,” Kaplan said.
“And then somebody comes in and says, ‘We’re gonna over double your rent.”
Kavish Harjai
writes about infrastructure that's meant to help us move about the region.
Published March 25, 2026 3:12 PM
A field team member of the Bureau of Street Lighting installs a solar-powered light in Filipinotown.
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Mayor Bass Communications Office
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Topline:
The Los Angeles City Council approved a plan in a 13-1 vote on Tuesday to send ballots to more than half a million property owners asking if they are willing to pay more per year to fortify the city’s streetlight repair budget, most of which has essentially been frozen since the 1990s. The item still requires L.A. Mayor Karen Bass’ signature, but her office confirmed to LAist on Wednesday that she’ll approve it.
Frozen budget: Most of the city’s Bureau of Street Lighting budget comes from an assessment that people who own property illuminated by lights pay on their county property tax bill. The amount people pay depends on the kind of property they own and how much they benefit from lighting. A typical single-family home currently pays $53 annually, and in total, the assessments bring in about $45 million annually for the city to repair and maintain streetlights. Changing the amount the Bureau of Street Lighting gets from the assessment requires a vote among property owners who benefit from the lights.
Ballots: L.A. City Council’s vote gives city staff the green light to prepare and send out those ballots. Miguel Sangalang, who oversees the bureau, said at a committee meeting earlier this month that he expects to send out ballots by April 17. Notices about the ballots will be sent out prior to the ballots themselves.
Near unanimous vote: L.A.City Councilmember Monica Rodriguez was the only “No” vote on Tuesday, saying she wanted to see a more current strategic plan for the bureau. Sangalang said the bureau developed a plan in 2022 that lays out how money will be spent. Councilmember Imelda Padilla was absent for the vote.
Vote count: Votes will be weighted according to the assessment amount. Basically, the more you’re asked to pay yearly to maintain streetlights, the more your vote will count. Ballots received before June 2 will be tabulated by the L.A. City Clerk.
How much more money: According to a report, the amount needed in assessments from property owners to meet the repair and maintenance needs of the city’s streetlighting in the next fiscal year is nearly $112 million.
Use of the money: Sangalang said at a March 11 committee meeting that the extra funds would be used to double the number of staff to handle repairs and procure solar streetlights, which don’t face the threat of copper wire theft. That would all potentially reduce the time it takes to repair simple fixes down to a week. Currently, city residents wait for months to see broken streetlights repaired.The assessment would come with a three-year auditing mechanism.
Topline:
The Los Angeles City Council approved a plan in a 13-1 vote Tuesday to send ballots to more than a half-million property owners asking if they are willing to pay more per year to fortify the city’s streetlight repair budget, most of which essentially has been frozen since the 1990s. The item still requires L.A. Mayor Karen Bass’ signature, but her office confirmed to LAist on Wednesday that she’ll approve it.
Frozen budget: Most of the city’s Bureau of Street Lighting budget comes from an assessment that people who own property illuminated by lights pay on their county property tax bill. The amount people pay depends on the kind of property they own and how much they benefit from lighting. A typical single-family home currently pays $53 annually, and in total, the assessments bring in about $45 million annually for the city to repair and maintain streetlights. Changing the amount the Bureau of Street Lighting gets from the assessment requires a vote among property owners who benefit from the lights.
Ballots: L.A. City Council’s vote gives city staff the green light to prepare and send out those ballots. Miguel Sangalang, who oversees the bureau, said at a committee meeting earlier this month that he expects to send out ballots by April 17. Notices about the ballots will be sent out prior to the ballots themselves.
Near unanimous vote: L.A.City Councilmember Monica Rodriguez was the only “No” vote Tuesday, saying she wanted to see a more current strategic plan for the bureau. Sangalang said the bureau developed a plan in 2022 that lays out how money will be spent. Councilmember Imelda Padilla was absent for the vote.
Vote count: Votes will be weighted according to the assessment amount. Basically, the more you’re asked to pay yearly to maintain streetlights, the more your vote will count. Ballots received before June 2 will be tabulated by the L.A. City Clerk.
How much more money: According to a report, the amount needed in assessments from property owners to meet the repair and maintenance needs of the city’s streetlighting in the next fiscal year is nearly $112 million.
Use of the money: Sangalang said at a March 11 committee meeting that the extra funds would be used to double the number of staff to handle repairs and procure solar streetlights, which don’t face the threat of copper wire theft. That would all potentially reduce the time it takes to repair simple fixes down to a week. Currently, city residents wait for months to see broken streetlights repaired. The assessment would come with a three-year auditing mechanism.