A circuit board cooling system comprises a cooling unit comprising fans, pressures sensors that measure air pressure at their locations, and a sensor processing unit coupled with the pressure sensors. The cooling unit operates according to an operating configuration and generates air flow to cool a portion of a circuit board. The pressure sensors comprise a first pressure sensor located between the portion of the circuit board and the cooling unit; and a second pressure sensor located such that the portion of the circuit board is between the second pressure sensor and the cooling unit. A sensor processing unit is configured to: obtain the air pressure data measured by the plurality of pressure sensors; and adjust the operating configuration of the cooling unit based on a cooling specification and a comparison of the obtained air pressure data measured by the first pressure sensor and the second pressure sensor.