Armenia ranked 63rd out of 180 countries on Environmental Performance Index (EPI) in 2018. Its rank on subindex Environmental Health (which is weighted at 40% in EPI) is 109, while Armenia's rank on subindex of Ecosystem Vitality (weighted at 60% in EPI) is 27th best in the world. This suggests that main environmental issues in Armenia are with population health, while environment vitality is of lesser concern. Out of sub-subindices contributing to Environmental Health subindex ranking on Air Quality to which population is exposed is particularly unsatisfying.