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Discrete Data Reports

The Bureau of Air Quality uses "discrete" or manual method monitoring for two Criteria Pollutants - Lead and PM2.5. A discrete method is generally a "manual" method of sampling, most commonly using an air filter to trap air pollutants from ambient air for a defined, or "discrete," period of time. The filter is then removed from the collection site and analyzed in a DEP-accredited laboratory. PA DEP's monitoring strategy generally requires the installation of monitors in areas under PA DEP's jurisdiction having high population density and/or high levels of contaminants, based on EPA guidance and population information from the U.S. Office of Management and Budget (OMB). Monitoring data for discrete-method monitors are available below.

2022 Quarterly Data

Choose from the links below to get a report, by quarter, of the latest available 24-hour concentrations for the DEP's filter-based lead and PM2.5 data. Please note that concentration data for 2022 may undergo further QA/QC analyses before it is finalized by May 1, 2023.
QuarterPDF Summary
Jan–Mar Lead PM2.5
Apr–Jun Lead PM2.5
Jul–Sep  
Oct–Dec  

Concentration Data By Year

Choose from the links below to get a report, by year, of 24-hour concentrations for the DEP's filter-based lead, and PM2.5 data.
YearPDF Summary
2021 Lead PM2.5
2020 Lead PM2.5
2019 Lead PM2.5

Concentration Data By Year – Palmerton, PA

Choose from the links below to get a report, by year, of 24-hour concentrations for the DEP's filter-based criteria lead data at its two monitoring sites in Palmerton, PA. The Palmerton lead monitor began operating in July 2012. The Palmerton High School lead monitor began operating in May 2020.
YearPDF Summary
2021 Lead 
2020 Lead 
2019 Lead 
2018 Lead 
2017 Lead 
2016 Lead 
2015 Lead 
2014 Lead 
2013 Lead 
2012 Lead