A method of controlling a drying process in a laundry drying apparatus, in particular in a dryer or in a washer dryer, wherein the laundry drying apparatus comprises: a cabinet which houses the drying apparatus components, a laundry treatment chamber (22, 28) for drying laundry, a process air circulation arrangement (20, 22) for circulating process air through the treatment chamber (22, 28), wherein the process air is guided in a process air channel from a treatment chamber outlet to a treatment chamber inlet such that the treatment chamber (22, 28) and the process air channel form a process air loop, a first temperature detector unit (46, 50) adapted to detect a first temperature state (Tin, Tamb) indicative of the ambient temperature being ambient to the laundry drying apparatus or to the drying apparatus cabinet, and a second temperature detector unit (46, 48) adapted to detect a second temperature state (deltaT) indicative of the operation temperature of the laundry drying apparatus; wherein the method is characterised by comprising the steps of: detecting the first and the second temperature states (Tin, Tamb; deltaT), selecting a first laundry dryness control routine or a second dryness control routine in dependency of the detected first and second temperature states (Tin, Tamb; deltaT), and drying the laundry in the treatment chamber (22, 28) according to the selected one of the first or second laundry dryness control routines, wherein a first operation parameter or a first operation parameter set used for controlling the laundry dryness according to the first laundry dryness control routine is different from a second operation parameter or a second operation parameter set used for controlling laundry dryness according to the second laundry dryness control routine. a cabinet which houses the drying apparatus components, a laundry treatment chamber (22, 28) for drying laundry, a process air circulation arrangement (20, 22) for circulating process air through the treatment chamber (22, 28), wherein the process air is guided in a process air channel from a treatment chamber outlet to a treatment chamber inlet such that the treatment chamber (22, 28) and the process air channel form a process air loop, a first temperature detector unit (46, 50) adapted to detect a first temperature state (Tin, Tamb) indicative of the ambient temperature being ambient to the laundry drying apparatus or to the drying apparatus cabinet, and a second temperature detector unit (46, 48) adapted to detect a second temperature state (deltaT) indicative of the operation temperature of the laundry drying apparatus; wherein the method is characterised by comprising the steps of: detecting the first and the second temperature states (Tin, Tamb; deltaT), selecting a first laundry dryness control routine or a second dryness control routine in dependency of the detected first and second temperature states (Tin, Tamb; deltaT), and drying the laundry in the treatment chamber (22, 28) according to the selected one of the first or second laundry dryness control routines, wherein a first operation parameter or a first operation parameter set used for controlling the laundry dryness according to the first laundry dryness control routine is different from a second operation parameter or a second operation parameter set used for controlling laundry dryness according to the second laundry dryness control routine. detecting the first and the second temperature states (Tin, Tamb; deltaT), selecting a first laundry dryness control routine or a second dryness control routine in dependency of the detected first and second temperature states (Tin, Tamb; deltaT), and drying the laundry in the treatment chamber (22, 28) according to the selected one of the first or second laundry dryness control routines, wherein a first operation parameter or a first operation parameter set used for controlling the laundry dryness according to the first laundry dryness control routine is different from a second operation parameter or a second operation parameter set used for controlling laundry dryness according to the second laundry dryness control routine.