После дождя в парке прохладно.

After the rain, it is cool in the park.

Breakdown of После дождя в парке прохладно.

• парк: the park
• в: in
• дождь: the rain
• после: after

Questions & Answers about После дождя в парке прохладно.

Why is it дождя and not дождь?

Because после requires the genitive case.

• Dictionary form: дождь = rain
• Genitive singular: дождя

So после дождя means after rain / after the rain.

This is a very common pattern in Russian:

• после урока = after the lesson
• после работы = after work
• после фильма = after the movie

Why is it в парке?

Because в is being used to mean in, expressing location, and after в with location Russian uses the prepositional case.

• Dictionary form: парк
• Prepositional singular: в парке

Compare:

• в парке = in the park
• в парк = into the park

So here, since the sentence says where it is cool, not movement into the park, в парке is correct.

Why is there no word for it is?