BETHLEHEM, Pa. — Fine particulate air pollution in the Lehigh Valley exceeds World Health Organization standards, but the lowest concentrations are in residential areas removed from highways, according to a $100,000 regional air monitoring project.
While none of the air monitoring locations so far evaluated exceeded the United States’ standard for a daily average of PM 2.5 concentrations, all but one of the sites measured are nearly double the World Health Organization’s stricter guidelines, researchers behind the Lehigh Valley Breathes project said in its latest update.
“Although PM 2.5 pollution standards have been strengthened many times based on evolving science, even at low levels of exposure, this pollution poses serious harm to human health.”…