The destruction of the ozone layer is caused by environmental pollution, and man mainly generates this, so schools must promote love and respect for the planet in children from an early age. For this reason, the general objective of this study was to analyze the environmental awareness of fourth-grade elementary school students in a public institution in Lima, Peru, and the specific objective was to determine and explain the affective, cognitive, conative and active dimensions of elementary school students. The article was methodologically developed with a mixed approach and sequential explanatory design. The sample consisted of 135 fourth-grade students of the “María Reiche Grosse” school of the district of Puente Piedra. The techniques used were the survey and the interview, and a questionnaire and an interview guide were used as instruments. The results show that there is an adequate environmental awareness that reflects a medium level in the affective, cognitive and conative dimensions, while in the active dimension, they are at a high level; this is evidenced in the attitudes, feelings, values and pro-environmental actions that the students have as a result of the knowledge they have acquired regarding the environment.