Abstract. Air pollution reduces breathing capacity in athletes and affects their performance. Some pollutants that cause health disorders, such as tropospheric ozone (O3), particulate matter (PMx), carbon monoxide (CO) have been separately identified. Nitrogen oxides (NOx) and sulfur oxides (SOX). These are usually concentrated in urban centers and are mainly, though not exclusively, caused by normal human activities such as transportation, heating, cooking, and agricultural and industrial activities. The aforementioned factors cause various diseases such as cancer, cardiovascular, respiratory and affect the performance of athletes. Conclusion: During training and physical activity, the amount of oxygen consumption increases and suspended particles, ozone, nitrogen oxide, sulfur oxide penetrates deep into the lungs and even blood flow, which is more common among endurance athletes than in the open air. But the health that sports brings is beyond the harm of air pollution, but still air pollution has a negative effect on the performance of athletes.