This research examines the effect of adding titanium dioxide to concrete as an innovative solution to address air pollution and enhance self-cleaning properties. Titanium dioxide acts as a photocatalyst that is activated by ultraviolet radiation, helping to break down harmful pollutants such as nitrogen oxides (NOₓ), sulfur oxides (SOₓ), and volatile organic compounds (VOCs). These pollutants are converted into less harmful compounds that can be easily washed away by rain or dispersed by wind. A reference sample and three additional samples were prepared, containing different proportions of titanium dioxide added to the concrete mixture—3%, 4%, and 5% of the cement weight. The purpose of varying these ratios was to study their impact on key characteristics such as compressive strength, workability, and durability, as well as their effectiveness in reducing pollutants and achieving self-cleaning behavior. The results showed that increasing the amount of titanium dioxide improved the concrete’s ability to self-clean and remove contaminants. In terms of mechanical properties, concrete containing titanium dioxide achieved compressive strengths above the target average for all tested ratios. Among the studied mixtures, the 4% titanium dioxide content proved to be the most effective, offering the best balance between compressive strength, resistance to pollutants, and color stability, thereby enhancing performance in polluted environments. Although self-cleaning concrete involves a higher initial cost due to the addition of titanium dioxide, this expense is partly offset by reduced maintenance needs and long-term environmental and economic benefits. Therefore, titanium dioxide-enhanced concrete represents a sustainable and valuable option for future construction applications................. Keywords:................ Photocatalysis, Eco-friendly concrete, Titanium dioxide (TiO₂), Improving air quality.