Iowa air monitors recorded 91 exceedances of National Ambient Air Quality Standards during 2014, with the vast majority (71) occurring at three locations in Muscatine.
Of the 76 exceedances of sulfur dioxide standards in the state, 66 were recorded in Muscatine at the Musser Park, Greenwood Cemetery and Muscatine High School air monitoring stations. Of the 15 exceedances of fine particulate matter (less than 2.5 microns) statewide, five occurred at Muscatine monitors.