Miles E. Keogh, National Association of Clean Air Agencies
State and local air pollution agencies work around the clock to improve air quality everywhere. And by working with our EPA partners, we’ve seen terrific success! READ MORE
“State of the Air” 2026 marks a critical crossroads in efforts to protect everyone, especially children, from the harms of air pollution in the United States. Federal actions to weaken, delay and eliminate highly successful, health-protective programs are creating significant risk to ongoing pollution cleanup.
Under the Clean Air Act, EPA has historically driven enormous progress in cleaning up pollution from the transportation, electricity, buildings and industrial sectors for over 55 years. Clean air takes work. We all breathe healthier air because of decades of EPA actions to clean up air pollution. Scientists, epidemiologists, economists and other experts at EPA have tracked, analyzed and expanded the nation’s understanding of air pollution at the community level, how it harms health, and what can be done to reduce it. Now, however, that progress is at risk.
This year’s “State of the Air” report focuses on the American Lung Association’s overarching call to action to tell EPA: “Our kids’ health counts.”
With 46% of U.S. children breathing failing air, tell the Environmental Protection Agency to restore its mission and put kids’ health first.
Contrary to its mission, EPA has recently acted to weaken, delay or revoke key health protections that will leave children in the U.S. more exposed and more vulnerable to the consequences of many different pollutants, including ozone and particle pollution. These actions reflect not only a departure from decades of clean air progress in the U.S. but are accompanied by the unprecedented elimination of health calculations from agency cost-benefit analyses. Stated again bluntly: EPA announced they will no longer calculate the monetary value of lives saved and health harms avoided when they change pollution standards.
EPA’s decision to eliminate calculating the costs of air pollution-related emergencies, ranging from pediatric asthma attacks to hospitalizations to premature deaths, devalues the health of children. The agency claims that there is uncertainty in health cost estimations, but the long-established science says otherwise. What’s more, the agency has continued including calculations of savings to polluting industries in rulemakings. The combined effect of these choices is that any effort to eliminate or weaken clean air protections will hide the costs of the significant increases in ozone pollution, fine particles and other pollutants that will lead to emergency department visits, hospitalizations or premature death.
EPA must not devalue the benefits of removing deadly pollution from the air children breathe. This should always be the case, but is especially important now considering recent federal actions to weaken and roll back air pollution standards. The federal government under the current Administration has proposed or finalized weakened controls on ozone-forming emissions, particles and other pollutants related to cars, trucks, power plants and other sources that harm childhood lung development and function, in addition to lifelong health concerns.
The overarching call to action of the “State of the Air” 2026 report is for EPA to return to its mission and to value the health of children in the U.S., by restoring clean air safeguards and counting the costs of pollution on public health.
“State of the Air” 2025 noted that EPA launched a broad effort to roll back a wide range of air pollution protections and investments in clean technologies, as well as cutting staff at key public health agencies. Since then, federal actions have weakened, delayed and repealed many life-saving protections, statutory deadlines have been missed, foundational climate science findings have been ignored, and additional attacks on clean air safeguards have been launched with increased frequency.
While many of these actions remain in a proposal phase, others have already been issued as final rules or repeals. Notable examples of final or proposed federal actions related to air pollution that threaten the health of all people in the U.S., particularly children, include:
While the federal government’s actions threaten to increase ozone and particle pollution for hundreds of millions of people, states and cities still have many tools in their toolbox to reduce emissions that harm kids’ health.
States can invest in infrastructure to support increased use of electric vehicles, walking, biking and transit rather than expanding highway capacity, and require more electricity (including electricity used by data centers) to come from truly clean, non-combustion energy sources like wind, solar, geothermal and tidal. They can also adopt policies to reduce emissions from buildings, industrial manufacturing facilities and freight activities such as rules to ensure cleaner operations at warehouses, railyards or ports.
At the local level, investments in healthier, more sustainable transportation options (transit, pedestrian, electric school and transit buses), community-level clean energy programs and encouragement of “smart surfaces” can help protect health from air pollution. “Smart surfaces” include cool roofs, porous pavement, more green space and solar panels that help reduce heat in neighborhoods and protect health from the combined health harms of pollution and dangerously high temperatures. Local agencies can also adopt limits on emissions from residential appliances or commercial and industrial heating systems. Air quality and public health agencies can communicate health risks, provide incentives and share other, locally-informed opportunities to curb pollution.
Individuals can keep themselves safe on days with poor air quality and help their friends and families do the same – by doing things like checking daily air pollution forecasts at Airnow.gov, preparing for wildfires and other disasters (learn more at Lung.org/disaster) and reducing emissions from their vehicle or home energy use.
Above all: you can also use the power of your personal voice. Even in a time when clean air protections are under threat, the fact remains: people nationwide want and deserve clean air. The need for clean air is universal and nonpartisan. And sharing a story is powerful–whether it’s a time when you had asthma symptoms on a smoggy day, your child having to spend days indoors because of wildfire smoke, or your concerns about the actions of the current EPA to gut clean air protections. That’s true when you take your story to leaders, but it’s also true with family, friends and other members of your community.
EPA must return to its mission, must value the health of the nation’s children and must follow science and the law to protect public health.
"During a review of the National Ambient Air Quality Standard for particulate matter, EPA's Office of Research and Development asked me to develop a new NAAQS PM2.5 standard method – that is, to come up with a better way to measure fine particles to ensure a better health outcome for the American people. I led a research group at EPA that developed the new method and wrote the material in the code of federal regulations explaining how to make and report these measurements. The PM2.5 method is still the method used by the U.S. today as well as the rest of the world.
One of the most important aspects of the new method was to ensure it was both accurate and precise in its measurements. The PM2.5 methodology included a rigorous quality assurance program to make certain that the reported measurements were legitimate. It allowed any manufacturer who met the requirements to get approval from EPA to construct and sell their instruments. EPA’s Office of Research and Development played a key role in ensuring the legitimacy of the method and controlling its cost."
State and local clean air agencies deliver air quality improvements by working together with communities, companies, elected leaders, and civic organizations to carry out the programs that cut emissions and improve public health and prosperity. Whether it’s developing and implementing state plans, deploying air pollution monitors, helping small businesses comply with the law, or enforcing regulations that protect the public, state and local air pollution agencies work around the clock to improve air quality everywhere. And by working with our EPA partners, we’ve seen terrific success! While more work remains to be done to protect clean air for all, since Congress passed the Clean Air Act in 1970, air pollution has dropped sharply while the economy has grown.
Science is essential as the U.S. Environmental Protection Agency carries out its mission to protect human health and the environment. In fact, laws passed by Congress require the EPA to use the “best available science” in many decisions about regulations, permits, cleaning up contaminated sites and responding to emergencies.
In addition to being an academic researcher who works on air pollution, from 2022 to 2024, I served as assistant administrator of the EPA’s Office of Research and Development and the EPA science adviser. The Office of Research and Development is the agency’s scientific research arm and the EPA’s primary source for gathering and developing the best available science for decision-makers.
During my time at the EPA, the Office of Research and Development’s work informed regulatory decisions involving air, water, land and chemicals. It informed enforcement actions, as well as cleanup and emergency response efforts in EPA’s regions. State agencies and tribal nations also look to the EPA for expertise on the best available science, since they typically do not have resources to develop this science themselves.
EPA’s role in implementing the Clean Air Act
When I first joined EPA in 1991, the 1990 Clean Air Act Amendments had just been finalized, and we were taking on the task of implementing those amendments. Since that time, many people have stated that the Clean Air Act and especially the 1990 Clean Air Act Amendments have been some of the most successful pieces of legislation ever written. It is hard to argue that point when you look at air pollution levels from the 1970s compared to today and contrast that to the growth in Gross Domestic Product (GDP) over the same period. But as a new EPA employee, one of the things that I did not appreciate until I worked at EPA for a while was that all of that success does not come just from EPA writing rules and publishing them in the Federal Register. That is only the very beginning of the process. It is the implementation of those rules that actually gets the air quality benefits, and that implementation process is one that includes a multitude of participants, all of whom engage with EPA staff on a regular basis to make it work.
State, local and tribal air agencies are on the front lines for implementing most of the clean air rules and the regulated entities carry much of the burden for reducing the emissions under those rules. But what really makes all this work so well is the engagement of all the players working together to get the emissions reductions that yield cleaner air in a way that is both beneficial to the environment while also minimizing the impact on the regulated entity. Most of my career was spent interacting with state, local, tribal air agency partners to listen to their concerns, work together to find solutions to challenging problems and to use their input to make rules as implementable as possible. In the same way, I spent an equal amount of time engaging with stakeholders in the regulated community as they were most knowledgeable about their facilities and often had excellent suggestions on how best to implement various regulations in the most cost-effective and efficient manner. They also had ideas how we could improve many of the implementation tools they needed and used.
I realized that throughout my career that not only do EPA staff care deeply about the mission of the Agency and protecting public health and the environment, but they also have a deep respect for those they work with in both government and the private sector. They appreciate that the role of a civil servant is to serve… to serve the people of this country and that includes all the people. Those that work for state, local and tribal air agencies, those in the regulated community, as well as all of the people that live and breathe air in this country.
When rules are written, they are not done haphazardly, but with great care to consider all input provided during public comment periods. They are developed to be as cost-effective as possible, to consider the impacts on the regulated community while also fulfilling the mission of the Agency to protect public health and the environment. EPA civil servants bring their technical and policy knowledge to every issue to make sure that everyone is heard, and all aspects of the solution are studied to make sure the best possible outcome is achieved. The expertise of these scientists and engineers and the many years of experience is critical to making the best decisions possible and with that expertise, unnecessary consequences of an action can be avoided.
When people in this country take a deep breath, they want to have confidence that the air they inhale is clean and not harmful to them. They expect that and they deserve that as citizens of the United States. The most important thing I learned during my 30+ year career is that the civil servants in the EPA air office care deeply about providing clean air for everyone and doing it in the most efficient and effective way possible. Across government, that is what civil servants do… they serve. They serve the American people every day.
State and local air pollution agencies work around the clock to improve air quality everywhere. And by working with our EPA partners, we’ve seen terrific success! READ MORE
The most important thing I learned during my 30+ year career is that the civil servants in the EPA air office care deeply about providing clean air for everyone and doing it in the most efficient and effective way possible. READ MORE
During my time at the EPA, the Office of Research and Development’s work informed regulatory decisions involving air, water, land and chemicals. It informed enforcement actions, as well as cleanup and emergency response efforts in EPA’s regions. READ MORE
EPA's Office of Research and Development asked me to develop a new NAAQS PM2.5 standard method – that is, to come up with a better way to measure fine particles to ensure a better health outcome for the American people. READ MORE
Page last updated: April 8, 2026
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