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Diesel Particulate Matter in Outdoor Air

Summary Indicator Report Data View Options

Diesel Particulate Matter in Outdoor Air by County, New Jersey, 2019

Why Is This Important?

Diesel engines emit a complex mixture of air pollutants, including both particles and gases. Diesel particulate matter includes soot, metallic abrasion particles, sulfates, and silicates. Because of their small size, inhaled particles may penetrate deep into the lungs. Exposures have been linked to symptoms such as headache, dizziness, nausea, coughing, difficulty in breathing, and irritation of the eyes , nose and throat. Prolonged exposures can lead to heart disease, lung disease, and lung cancer. It has been estimated that hundreds of New Jersey residents die or suffer respiratory illnesses every year from harmful diesel particulate matter.


Mean of modeled annual average diesel particulate matter concentration for census tracts in a county

Data Sources

How the Measure is Calculated

Numerator:Modeled mean diesel particulate matter concentration in micrograms per cubic meter

How Are We Doing?

All New Jersey counties exceed the health benchmark of 0.0033 micrograms of diesel particulate matter per cubic meter of air. The highest ambient air concentration can be found in Hudson County.

What Is Being Done?

The NJDEP's Diesel Risk Reduction Program is reducing the amount of particulate matter emitted by diesel vehicles. Key strategies of the program include: a mandatory diesel retrofit program; idling restrictions; a heavy duty diesel vehicle inspection program; and efforts to reduce emissions at New Jersey's ports.

Available Services

To view select air quality data collected at outdoor monitors across the United States go to: [] New Jersey County Risk Ratio tables can be found at the following URL: []

More Resources

The USEPA Integrated Risk Information System provides more detailed information about diesel engine exhaust and research studies on its health effects at the following URL: [] New Jersey Statewide Average 2005 NATA Modeled Air Concentrations and comparisons to health benchmarks can be found at: [] U.S. Department of Energy Vehicle Idle Reduction Savings Worksheet: [] NJ Clean Air Council 2012 Public Hearing (Transportation & Small Sources of Air Pollution) [] Stop the Soot: [] Recommended actions for reducing emissions: [] Federal Air Toxics Program: [] NJDEP "What's in My Community?" mapping application: [] On the map you will find every facility with an air permit registered with the Division of Air Quality at the New Jersey Department of Environmental Protection.

Indicator Data Last Updated On 05/09/2023, Published on 05/11/2023
Environmental Public Health Tracking Project, New Jersey Department of Health, PO Box 369, Trenton, NJ 08625-0369, e-mail: (