– Common coarse particulate matter (PM10): 13 μg/m^3
– Second-highest common coarse particulate matter (PM10): 34 μg/m^3 (341.2% under EPA commonplace)
– Common wonderful particulate matter (PM2.5): 8.5 μg/m^3 (41.2% under EPA commonplace)
Though Baltimore Metropolis and Baltimore County have work to do on decreasing smog, the town was given a B grade for the quantity of soot within the air, whereas the county was given an A grade. Nonetheless, Baltimore fared worse by way of ozone, touchdown within the #17 spot amongst cities with the very best ozone days. In Howard County, which is residence to Columbia, Maryland, the soot grade was additionally an A.