The best way to know if salmon is done cooking is to check the internal temperature with a food thermometer. Salmon is done when it reaches an internal temperature of 145 degrees Fahrenheit.u003cbr/u003eu003cbr/u003eAnother way to know if salmon is cooked through is to flake it with a fork - if it flakes easily, it's done. Keep in mind that overcooked salmon will taste dry and rubbery, so cook it just until it's cooked through but still moist and juicy.