Preheat the air fryer to 400°F (200°C) for optimal searing and a crisp finish.
Pat the salmon fillet dry with a paper towel to remove excess moisture and ensure the exterior gets perfectly golden.
In a small bowl, whisk together the avocado oil, garlic powder, paprika, sea salt, and black pepper to create a savory rub.
Brush the oil mixture evenly over the salmon fillet and the trimmed asparagus spears until well coated.
Arrange the salmon and asparagus in the air fryer basket in a single layer, ensuring there is enough space for air to circulate.
Air fry for 8 to 10 minutes, or until the salmon reaches an internal temperature of 145°F and flakes easily with a fork.
While the salmon is cooking, combine the Greek yogurt, finely chopped fresh dill, lemon juice, and lemon zest in a separate bowl.
Plate the warm salmon and asparagus immediately, finishing with a generous dollop of the zesty dill sauce.