Cloud seeding is a weather-modification technique used to enhance precipitation (rain or snow) by injecting tiny particles—such as silver iodide, dry ice or salts - into clouds. These particles act as condensation or ice nuclei around which water vapour can accumulate, encouraging droplets or ice crystals to clump, grow heavier and fall as precipitation. The method can be carried out from aircraft, rockets or ground-based generators depending on the source of the cloud particles. 

Despite its promise, the technique has limitations. Its effectiveness depends heavily on existing cloud conditions - clouds must already contain moisture or supercooled liquid water. Experts estimate it may increase precipitation by about 5–15 % in optimal cases.

 Furthermore, it operates on a very local scale and cannot create rain from clear skies or large-scale storms. While used globally in drought-prone or snow-dependent regions, it remains a tool with modest impact—not a solution to large-scale climate or water-scarcity challenges.