In a control system for an automotive air conditioner, a solar insolation correction coefficient includes two types of values one of which is a value (11L, 11R) expressed by a directly body-transmitted solar insolation component which is a solar insolation directly received by the body of a driver and/or a passenger, whereas the other is a value (12) expressed by a vehicle applied solar insolation component which is a solar insolation received by a vehicle to thereby increase the in-vehicle temperature. Accordingly, the target temperature for conditioned air discharged from the outlets can be set in such a manner as to correspond to the solar insolation which the driver actually receives.