When fog forms, the air is usually saturated with moisture. Thus, small droplets form and creates fog. Suspended fine dust can serve as condensation nuclei during the formation of fog. So my question is: when fog forms overnight over a city, is the air cleaned of fine dust, as the dust particles are now trapped within the water droplets?
Fog does trap Particles in the air That is why it’s not recommend to drink fog water . It would be drinking dirty water which is relatively harmless to plant and insect life. And fine Mist sprayers are used around construction site to trap air particles keep dirt from coming out