New Lung Association Report: 628,220 Children in Nevada Are Breathing Some of the Most Polluted Air in the Country
Federal actions threaten progress in protecting Nevada children from air pollution, according to the American Lung Association’s “State of the Air” report.LAS VEGAS, NV | April 21, 2026
Today, the American Lung Association released its 27th annual “State of the Air” report, which finds that nearly half of the children in the U.S. are breathing unhealthy levels of air pollution, including 628,220 kids in Nevada. The Las Vegas-Henderson, NV metro area ranked 11th worst in the nation for ozone pollution. The ranking was based on the area’s worst county’s average number of unhealthy days—22.3 days per year, an F grade, in Clark County, Nevada. This was worse than the area's ranking in last year's report of 12th worst, with 22.2 days per year, an F grade.
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The Lung Association’s “State of the Air” report grades counties’ air quality in terms of unhealthy levels of ground-level ozone air pollution (also known as smog), and year-round and short-term spikes in particle pollution (also known as soot) over a three-year period (2022-2024). The report also ranks counties and metropolitan areas in cleanest and most polluted lists for each pollutant. Both ozone and particle pollution can cause premature death and other serious health effects such as asthma attacks, heart attacks and strokes, preterm births and impaired cognitive functioning later in life. Particle pollution can also cause lung cancer.
Infants, children and teens as a group are more susceptible to the health impacts of air pollution. Their lungs are still developing; they breathe more air for their body size than adults and they are frequently exposed to outdoor air. Air pollution exposure in childhood can cause long-term harm, including reduced lung growth, new asthma cases and increased risk of respiratory diseases.
“Clean air is essential to the health and wellbeing of families across Nevada. Children deserve to breathe air that won’t make them sick,” said Melissa Ramos, senior manager, clean air advocacy and public policy for the American Lung Association. “Unfortunately, too many people in the Las Vegas metro area are living with unhealthy levels of ozone and particle pollution. This air pollution is causing kids to have asthma attacks, contributing to chronic health conditions, and making people who work outdoors sick.”
Ramos added: “To compound the issue further, the U.S. Environmental Protection Agency’s (EPA) rollbacks of critical healthy air rules are diminishing years of clean air progress. We urge Nevada policymakers to take action to improve our air quality, including cleaning up pollution from our electricity grid and vehicles on our roads
Nationally, the report found that 33.5 million children in the U.S., or 46% of people under 18 years old, live in an area that received a failing grade for at least one measure of air pollution. In total, 44% of people of all ages in the U.S. (152 million people in total) live in a county that received a failing grade for at least one measure of air pollution. 32.9 million people live in counties with failing grades for all three measures.
Key Findings for Las Vegas-Henderson, NV metro area:
Ground-level Ozone Pollution:
Ozone “smog” affects the largest number of people in the U.S. Smog forms when gases from tailpipes, smokestacks, factories and other pollution sources react with sunlight. It is a powerful respiratory irritant with effects that have been likened to a sunburn of the lungs.
- The Las Vegas-Henderson, NV metro area ranked 11th worst in the nation for ozone pollution.
- The ranking was based on the area’s worst county’s average number of unhealthy days—22.3 days per year, an F grade, in Clark County, Nevada.
- This was worse than the area's ranking in last year's report of 12th worst, with 22.2 days per year, an F grade.
Particle Pollution:
Fine particle pollution can be extremely dangerous and even deadly. These particles come from wildfires, wood-burning stoves, coal-fired power plants, diesel engines and other sources. The report has two grades for particle pollution: one for “short-term” particle pollution, or daily spikes, and one for the annual average “year-round” level that represents the concentration of particles in each location.
- The Las Vegas-Henderson, NV metro area ranked 31st worst in the nation for short-term particle pollution.
- The ranking was based on the area’s worst county’s average number of unhealthy days—5 days per year, an F grade, in Clark County, Nevada.
- This was worse than the area's ranking in last year's report of 46th worst, with 4.2 days per year, an F grade.
- For the year-round average level of particle pollution, the area’s worst county, Clark County, Nevada, received a passing grade for pollution levels below the federal standard.
- The Las Vegas-Henderson, NV metro area ranked 66th worst in the nation.
- This was worse than the area's ranking in last year's report of 89th worst in the nation.
Additionally, the report ranked the Reno-Carson City-Gardnerville Ranchos area 110th in the nation for ozone pollution and 37th worst in the nation for short-term particle pollution.
The American Lung Association in Nevada calls on our policymakers to clean up dirty pollution by transitioning away from fossil fuels and instead investing in clean energy and transportation choices. Our kids deserve to breathe clean air. We can spur economic development, improve the air we breathe, and protect the health of our families through zero-emission solutions.
The Lung Association is calling on everyone to urge EPA to value the health of America’s kids. Historically, EPA has played an essential role in protecting people’s health from air pollution. The current EPA has retreated from its public health foundation by rolling back clean air protections. This EPA has also taken the recent step of eliminating health-related information from its economic analyses, meaning that the costs of pollution to kids, families and communities will not be counted as policies are undone. EPA must not devalue kids’ health.
See the full report results and take action at Lung.org/sota.
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The American Lung Association is the leading organization working to save lives by improving lung health and preventing lung disease through education, advocacy and research. The work of the American Lung Association is focused on four strategic imperatives: to defeat lung cancer; to champion clean air for all; to improve the quality of life for those with lung disease and their families; and to create a tobacco-free future. For more information about the American Lung Association, which has a 4-star rating from Charity Navigator and is a Platinum-Level GuideStar Member, call 1-800-LUNGUSA (1-800-586-4872) or visit: Lung.org. To support the work of the American Lung Association, find a local event at Lung.org/events.
For more information, contact:
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