Abstract: An air quality monitor includes a housing defining an inlet and an outlet, a fan, and one or more sensors disposed in the housing. The fan is configured to transport air along a nonlinear flow path from the inlet of the housing to the outlet of the housing. The one or more sensors are arranged along the nonlinear flow path and include a first sensor positioned upstream of the fan and a second sensor positioned downstream of the fan. The first sensor is configured to sense a first parameter of the air and the second sensor is configured to sense a second parameter of the air.