Dust particles contribute to cloud formation by functioning as hygroscopic nuclei upon which water vapor in the atmosphere condenses to create cloud droplets. Dust particles can attract electrical charges and act as nuclei for the creation of ice crystals, especially in high-altitude clouds.
The existence of dust particles as cloud condensation nuclei is especially essential in areas with limited natural cloud condensation nuclei, such as over oceans, where sea salt particles can operate as nuclei but have lower quantities than in continental areas. Dust blown from deserts, agricultural areas, or industrial locations can dramatically increase cloud formation when transported over oceans or other moist places.