the influence of moisture, temperature, and sunlight on the severity of air pollution effects on materials, Solution Moisture, temperature, sunlight and air movement influence the attack rate of pollutants. Moisture is the most important corrosive item without which there can be minor corrosion even in the most severely polluted environments. Water pollutants like suspended particles or dissolved inorganic compounds can also adversely affect pumps, industrial equipments, bridges and other installations. Obviously these kinds of effects are superficial not severe, but in fact, the magnitude of the effect is high, draining huge economy on the repair or replacement of components. .