The data shows the volume of particulate matter 2.5 micrometers (PM2.5) emissions in the U.S. from 1970 to 2016. In 2016, there was 6.16 million tons of PM2.5 emissions. Particulate matter is a mixture of tiny particles and liquid droplets. They are usually composed of acids, organic chemicals, metals, and soil or dust particles.
1990 | 7560 |
1995 | 6929 |
2000 | 7288 |
2005 | 5592 |
2006 | 5736 |
2007 | 5881 |
2008 | 6014 |
2009 | 5988 |
2010 | 5964 |
2011 | 6100 |
2012 | 6222 |
2013 | 6345 |
2014 | 6220 |
2015 | 6191 |
2016 | 6163 |