Air Quality Action and Outreach by CAPHE & Partners

Apportionment of PM₂.₅ Sources Across Sites and Time Periods: An Application and Update for Detroit, Michigan


This new study identifies the major sources that contribute to PM₂.₅ levels in Southwest Detroit, one of the most polluted areas in Michigan. Air pollution causes many harmful health effects, especially the tiny particles known as soot or particulate matter (PM₂.₅) that penetrate deep into the lungs. PM₂.₅ in the outdoor air is estimated to cause early deaths of 47,800 people in the US each year. While exposure to air pollution is widespread, people of color are exposed to higher levels of PM₂.₅. The US Environmental Protection Agency (EPA) sets health-based outdoor air standards for PM₂.₅. Read on to learn more about PM₂.₅ pollution in Southwest Detroit.


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Preliminary Analysis of First Quarter 2019 and 2020 Ambient Air Quality in Southeast Michigan

Air pollution is associated with adverse environmental and health impacts, and there has been considerable interest regarding recent changes in pollutant levels that may have resulted from the pandemic and state-wide shut-down.  This analysis shows trends and changes in levels of four air pollutants — particulate matter (PM₂.₅), sulfur dioxide (SO₂), nitrogen oxides (NOx), and black carbon —  measured in Detroit and SE Michigan over the 2019-2020 period.

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CAPHE’s work is made possible by funding from the National Institute of Environmental Health Sciences (RO1ES022616, RO1ES032389), and the Fred A. and Barbara M. Erb Family Foundation.  Additional support is provided by the Michigan Center on Lifestage Environmental Exposures and Disease (M-LEEaD), #P30ES017885.