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Ozone smog slightly worse for Erie while year-round fine particle pollution improves for third year, finds 2018 State of the Air Report

Editors Note: Updated Trend Charts and rankings for metropolitan areas and county grades are available at on April 18, 2018 at 12:01 a.m. EDT.

(April 18, 2018) - Erie, PA

The American Lung Association’s 2018 “State of the Air” report found that ozone air pollution in the 2-county Erie-Meadville metro area and throughout much of the Mid-Atlantic worsened when compared with last year’s report, even as fine particle pollution levels continued their steady improvement.  The “State of the Air” report gives results for three measures of air pollution—days with elevated ozone, and daily and annual values for fine particle pollution. 


For the fourth consecutive year, Erie County, with the only official monitoring in the metro area, met the current national standard for year-round particle pollution, and had the third year in a row showing improvement.  As a result of Erie County making a significant improvement and posting its best ever value for this pollutant, the Erie-Meadville metro area’s national rank also improved markedly:  The area jumped from 25th worst to 58th worst in the country, taking it well off the “Worst 25 Cities” list for this pollutant measure.


For the daily measure of fine particle pollution in the metro area, not only did Erie County continue its nine-year streak of equaling or improving upon the previous year’s performance, but did so while earning passing grades. Repeating last year’s performance, Erie continued to earn an “A” grade with zero days of unhealthful air quality, placing the metro area on the list of “Cleanest Cities” in the country for this pollutant.  The metro area’s rank also improved, from 100th worst last year to 112th worst of 201 metro areas in the current report, with fewer areas nationwide being tied for “Cleanest.”


For ozone, Erie County posted worse results than in last year’s report, but continued with a passing grade under the current standard for only the second year, and continuing to earn a “C.”  As a result, the metro area’s rank worsened from 104th worst last year to 88th worst of 227 in the current report.  This is in keeping with a trend seen in most U.S. cities toward higher ozone pollution levels than in last year’s report. 


Compared to the 2017 report, the Erie-Meadville metro area, even as it continued improvement in year-round particle pollution, saw a slight increase in unhealthy days for ozone.  This is in keeping with trends seen across the nation for both higher ozone and lower particle pollution levels than in last year’s report.


“The 2018 ‘State of the Air’ report finds that unhealthful levels of ozone in Erie can still occasionally put our citizens at risk for premature death and other serious health effects such as asthma attacks and greater difficulty breathing for those living with a lung disease such as COPD.  As long as there are many days with high ozone levels, people with lung diseases such as asthma will continue to need medical attention,” said Kevin Stewart, Director of Environmental Health, American Lung Association of the Mid-Atlantic.  “Across the nation, the report found continued improvement in air quality, but still, more than four in 10 Americans – 133.9 million – live in counties that have unhealthful levels of either ozone or particle pollution, where their health is at risk.”


The trends in this year’s report, which covers data collected by states, cities, counties, tribes and federal agencies in 2014-2016, confirm the ongoing challenges to reduce each pollutant in the changing political and outdoor climate.


“We can and should do more to save lives,” Stewart said. “The American Lung Association in Pennsylvania calls on our members of Congress to defend the Clean Air Act, currently under threat from those who want to weaken this effective public health law. We also call on the U.S. Environmental Protection Agency to implement and enforce the law instead of trying to roll back major safeguards such as the Clean Power Plan and cleaner cars, both steps that help us fight climate change and reduce air pollution.” 


For 19 years, “State of the Air” has provided a report card on the two most widespread outdoor air pollutants, ozone pollution, also known as smog, and particle pollution, also called soot. The report analyzes particle pollution in two ways: through average annual particle pollution levels and short-term spikes in particle pollution. Both ozone and particle pollution are dangerous to public health and can increase the risk of premature death and other serious health effects such as lung cancer, asthma attacks, cardiovascular damage, and developmental and reproductive harm.


Ozone Pollution

 “Ozone especially harms children, older adults and those with asthma and other lung diseases,” said Stewart. “When older adults or children with asthma breathe ozone-polluted air, too often they end up in the doctor’s office, the hospital or the emergency room. Ozone can even shorten life itself.”


This report documents how warmer temperatures brought by climate change make ozone more likely to form and harder to clean up. This year’s report also revealed that ozone levels increased in most cities nationwide, in large part due to warmer temperatures in 2016, the second hottest year on record in the U.S. Over the past decades, ozone pollution has decreased nationwide because the nation has cleaned up major sources of the emissions that create ozone, especially coal-fired power plants and vehicles.


Fine Particle Pollution

Nationwide, the best progress in this year’s report came in reducing year-round levels of particle pollution, and Erie County’s performance was consistent with that trend.


“Particle pollution is made of soot, chemicals, and tiny particles that come from coal-fired power plants, diesel emissions, wildfires and wood-burning devices. These particles are so small that they can lodge deep in the lungs and trigger asthma attacks, heart attacks and strokes, and can even be lethal,” said Stewart. “Year-round particle pollution levels have dropped thanks to the cleanup of coal-fired power plants and the retirement of old, dirty diesel engines.”


“State of the Air” 2018 also tracked short-term spikes in particle pollution, as these can be extremely dangerous and even lethal.  While Erie was listed among the nation’s cleanest counties for its second year, this was not always the case.  In other parts of the country, many daily spikes of fine particle pollution were directly linked to weather patterns such as drought or to events such as wildfires, which are likely to increase because of climate change.  In some localities, high emissions from wood-burning devices have also been a factor.


While the report examined data from 2014-2016, this 19th annual report provides online information on air pollution trends back to the first report covering 1996-1998. Learn more about Pennsylvania’s rankings, as well as air quality in the Erie-Meadville metro area and across the nation in the “State of the Air” report at For media interested in speaking with an expert about lung health and healthy air, contact the American Lung Association in Pennsylvania Communications Director Ewa Dworakowski by calling 717-971-1123 or 717-503-3903 (cell) or emailing [email protected] .




About the American Lung Association in Pennsylvania

The American Lung Association in Pennsylvania is the leading organization working to save lives by improving lung health and preventing lung disease, through research, education and advocacy. The work of the American Lung Association in Pennsylvania is focused on four strategic imperatives: to defeat lung cancer; to improve the air we breathe; to reduce the burden of lung disease on individuals and their families; and to eliminate tobacco use and tobacco-related diseases. For more information about the American Lung Association in Pennsylvania, a holder of the Better Business Bureau Wise Giving Guide Seal, or to support the work it does, call 1-800-LUNGUSA (1-800-586-4872) or visit:


American Lung Association in Pennsylvania

810 River Ave., Suite 140 · Pittsburgh, PA 15212



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