Iran Iran, PM2.5 air pollution, mean annual exposure (micrograms per cubic meter)

Year Value Rank Change Change,%
2020 32.3 43 -1.73 -5.08%
2019 34 41 -3.66 -9.72%
2018 37.7 38 +2.66 +7.6%
2017 35 41 -2.47 -6.58%
2016 37.5 41 -1.21 -3.14%
2015 38.7 39 +2.33 +6.4%
2014 36.4 38 -2.38 -6.15%
2013 38.8 37 +0.745 +1.96%
2012 38 43 -1.6 -4.05%
2011 39.6 40 +1.3 +3.39%
2010 38.3 36 +0.992 +2.66%
2009 37.3 37 +0.953 +2.62%
2008 36.4 43 +0.81 +2.28%
2007 35.6 46 +0.563 +1.61%
2006 35 46 +0.211 +0.606%
2005 34.8 47 -0.176 -0.504%
2004 35 47 -0.42 -1.19%
2003 35.4 47 -0.501 -1.4%
2002 35.9 47 -0.42 -1.16%
2001 36.3 49 -0.176 -0.483%
2000 36.5 48 +0.184 +0.507%
1999 36.3 48 +0.45 +1.26%
1998 35.8 47 +0.563 +1.6%
1997 35.3 46 +0.524 +1.51%
1996 34.8 46 +0.332 +0.964%
1995 34.4 47 +0.18 +0.526%
1994 34.2 47 +0.162 +0.476%
1993 34.1 47 +0.133 +0.39%
1992 33.9 48 +0.0906 +0.267%
1991 33.9 49 +0.0365 +0.108%
1990 33.8 50

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