This paper analyzes the relationship between economic growth and environmental quality in the seven countries with the lowest level of production per inhabitant in Latin America, namely Paraguay, Guatemala, Bolivia, Honduras, El Salvador, Nicaragua and Venezuela, for the period 1990-2018. The methodology consists of estimating a panel model of random effects and fixed effects data. The results show that economic growth has a significant impact, along with other variables, on per capita carbon dioxide emissions in the countries under study. In turn, it was found that the countries in their initial stages of production considerably carbon dioxide emissions, while they exceed that period, achieve an inflection point in the curve that decreases their level of environmental degradation, as well as is sustained by the Kuznets' approaches with his environmental curve hypothesis.