In a large pot, bring water to a boil and add a pinch of salt. Add the elbow macaroni and cook according to package instructions until al dente, usually about 8-10 minutes.
Once cooked, drain the pasta in a colander and rinse under cold water to cool it down. Set aside to drain completely.
In a large mixing bowl, combine the chopped dill pickles, cherry tomatoes, red onion, and celery.
In a separate bowl, whisk together the mayonnaise, pickle juice, Dijon mustard, garlic powder, and season with salt and pepper to taste.
Add the cooled pasta to the vegetable mixture and gently fold in the dressing until everything is well combined.
Taste and adjust seasoning if needed. Garnish with fresh dill if desired.
Refrigerate for at least 30 minutes before serving to allow the flavors to meld.