Niebla vs. neblina
The Spanish words niebla and neblina both refer to the meteorological phenomena commonly known as fog, mist, or haze. However, there is a slight difference in their usage depending on the intensity and density of the phenomenon they describe.
Niebla
A2Niebla refers to a more dense, thick, or heavy type of fog or mist that notably reduces visibility. This term is typically used when the meteorological conditions are quite severe.
La niebla era tan densa que apenas podíamos ver el camino.
(The fog was so dense that we could barely see the road.)
Es peligroso conducir en condiciones de niebla.
(It is dangerous to drive in foggy conditions.)
Neblina
B1Neblina, on the other hand, refers to a lighter, less dense type of fog or mist. It reduces visibility but not as severely as niebla.
Desperté temprano y vi la neblina saliendo del lago.
(I woke up early and saw the mist rising from the lake.)
En la mañana había una suave neblina.
(There was a gentle mist in the morning.)
Summary
While niebla and neblina both refer to types of fog or mist, niebla refers to a more severe, heavy, denser form that significantly reduces visibility. On contrary, neblina denotes a lighter, less dense form of fog or mist.