Why do you use hay with the adjective foggy?

Question

Niebla is a noun (fog) so shouldn't the translation of hay niebla be there's fog...And it's foggy would be está neblinoso?

Inma Sánchez · Accepted Answer

Hola Evan
We use the most natural translations in English. Although the literal translations that you are suggesting are correct, it'd sound a bit unnatural to say it like that so we went for the more idiomatic ones.  I hope this clarified it.
Saludos
Inma

Bryan Stevens · Answer

A better question than How would you say "It is foggy" in Spanish? would be How would you say "There is fog" in Spanish?

Bryan Stevens · Answer

A better question than How would you say "It is foggy" in Spanish? would be How would you say "There is fog" in Spanish?

Inma Sánchez · Answer

Hola Bryan

As previously replied to Evan in this thread, using the sentence "there is fog" wouldn´t sound natural in English, that´s why we´re using the most common and natural "it´s foggy". In this topic about phrases to talk about the weather, there is a bit of memorising to do I´m afraid because some of the typical weather phrases in English don´t coincide literally with what we say in Spanish.

Un saludo cordial.

Inma