Allentown Metro Area Improves Slightly for all 3 Measures of Air Pollution in ‘State of the Air Report’; Ranks 4th Most Polluted in Mid-Atlantic for Ozone Pollution, Earns C Grade

The Lung Association’s 25th annual “State of the Air” report grades exposure to unhealthy levels of ground-level ozone air pollution, annual particle pollution and short-term spikes in particle pollution over a three-year period. This year’s report includes air quality data from 2020-2022 and is updated to reflect the new annual particle pollution standard that the U.S. Environmental Protection Agency (EPA) finalized in February.

“In the 25 years that the American Lung Association has been doing our ‘State of the Air’ report, we have seen incredible improvement in the nation’s air quality. Unfortunately, more than 131 million people still live in places with unhealthy levels of air pollution, and the Harrisburg metro area still has work to do,” said Aimee VanCleave, Director of Advocacy for the American Lung Association. “Climate change is making air pollution more likely to form and more difficult to clean up, so there are actions we can and must take to improve air quality in Pennsylvania, including adopting zero-emission standards for passenger vehicles and heavy-duty trucks. We are also calling on EPA to set long-overdue stronger national limits on ozone pollution.”

Ground-level Ozone Pollution in the Allentown-Bethlehem-Easton, PA-NJ metro area:

The “State of the Air” report looked at levels of ozone “smog,” the air pollutant affecting the largest number of people in the United States. The Allentown-Bethlehem-Easton, PA-NJ metro area ranked 79th worst in the nation for ozone pollution. The ranking was based on the area’s worst county’s average number of unhealthy days—1 day per year, a C grade, in Northampton County, PA. This was better than the area's ranking in last year's report of 65th worst, with 1.3 days per year, also a C grade. 

Particle Pollution in the Allentown-Bethlehem-Easton metro area:

The report also tracked short-term spikes in particle pollution, which can be extremely dangerous and even deadly. The Allentown-Bethlehem-Easton, PA-NJ metro area ranked 79th 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—1.3 days per year, a C grade, in Northampton County, PA. This was better than the area's ranking in last year's report of 74th worst, with 1.5 days per year, also a C grade. 

For the year-round average level of particle pollution, the area’s worst county, Lehigh County, PA, received a passing grade for pollution levels below the federal standard that was recently updated by the United States Environmental Protection Agency. The Allentown-Bethlehem-Easton, PA-NJ metro area ranked 84th worst in the nation. This was better than the area's ranking in last year's report of 79th worst in the nation.

In addition to the Allentown-Bethlehem-Easton metro area metro area, other notable findings across Pennsylvania include:

• The Philadelphia-Reading-Camden, PA-NJ-DE-MD metro area improved for all three pollutant measures in this year’s report, including setting new record best-ever values for ozone smog and year-round particle pollution. Despite improvement in ozone, it still earns a failing grade and is now worst-ranked in the Mid-Atlantic region for ozone smog.
• Harrisburg-York-Lebanon, PA Metro Area Ranked 37th most polluted in the U.S. for year-round particle pollution and second worst in the Mid-Atlantic; third worst for daily particle pollution; and earns B grade for ozone.
• The Pittsburgh-New Castle-Weirton metro area was the worst in the Mid-Atlantic for both measures of particle pollution, earning failing grades for both; and third worst in region for ozone smog with a D grade.

The “State of the Air” report found that nationally, more than 131 million people live in an area that received a failing grade for at least one measure of air pollution, and 43.9 million people live in areas with failing grades for all three measures. In the three years covered by this report, individuals in the U.S. experienced the highest number of days when particle pollution reached “very unhealthy” and “hazardous” levels in the history of reporting the “State of the Air.” Communities of color are disproportionately exposed to unhealthy air and are also more likely to be living with one or more chronic conditions that make them more vulnerable to air pollution, including asthma, diabetes and heart disease. The report found that a person of color in the U.S. is more than twice as likely as a white individual to live in a community with a failing grade on all three pollution measures.

Both ozone and particle pollution can cause premature death and other serious health effects such as asthma attacks, heart attacks, strokes, preterm births and impaired cognitive functioning later in life. Particle pollution can also cause lung cancer.

EPA recently finalized new air pollution rules that will help clean up particle pollution and address climate change. Now, the Lung Association is urging EPA to set long overdue stronger national limits on ozone pollution. Stronger limits would help people protect themselves and drive cleanup of polluting sources across the country. See the full report results and sign the petition at Lung.org/SOTA.