Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2015.

2015 Population Exposed to Unhealthy Levels of PM2.5 (%)

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 1990.

1990 Population Exposed to Unhealthy Levels of PM2.5 (%)

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 1995.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2000.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2005.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2010.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2011.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2012.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2017.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2014.

Percentage of population exposed to ambient concentrations of PM 2.5 that exceed the World Health Organization guideline value in 2013.

Percentage of population exposed to ambient concentrations of PM2.5 that exceed the World Health Organization guideline value in 2016.