As wildfire smoke blankets the East Coast, Air Quality Index and PM2.5 numbers are everywhere. Here’s what they mean. Air Quality Index, or AQI, and PM2.5, particulate matter which measures 2.5 ...
A collaborative team of researchers led by the Washington University in St. Louis (WUSTL) recently examined long-term trends in ambient fine particulate matter known as PM2.5 between 1998 and 2019 to ...
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