A particulates detector that is adapted to detect a particulate concentration at a predetermined sensed position, the device comprising: an optical particulate sensor that outputs a sensor output value (Vs) depending on the particulate concentration at the sensed position; and a correction section that is adapted to determine a corrected value (Vc) by correcting the sensor output value (Vs) as a value indicating the particulate concentration, wherein, the correction section is adapted to perform the determination of the corrected value (Vc), such that the particulate concentration indicated by the corrected value (Vc) decreases with decrease in wind speed at the sensed position in a case where the sensor output value (Vs) is fixed, the correction section is adapted to estimate the wind speed at the sensed position based on wind speed correlated information correlated with the wind speed at the sensed position or to acquire the wind speed at the sensed position from a wind speed sensor that is adapted to detect the wind speed at the sensed position, characterized in that the correction section is adapted to determine the corrected value (Vc) to be the sensor output value (Vs), when there is no difference between the wind speed at the sensed position and a criterion wind speed (Sd) determined in advance, and the correction section is adapted to determine the corrected value (Vc) to be lower in the particulate concentration than the sensor output value (Vs), when the wind speed at the sensed position is lower than the criterion wind speed (Sd), and the correction section is adapted to increase a difference between the sensor output value (Vs) and the corrected value (Vc) with decrease in wind speed at the sensed position. an optical particulate sensor that outputs a sensor output value (Vs) depending on the particulate concentration at the sensed position; and a correction section that is adapted to determine a corrected value (Vc) by correcting the sensor output value (Vs) as a value indicating the particulate concentration, wherein, the correction section is adapted to perform the determination of the corrected value (Vc), such that the particulate concentration indicated by the corrected value (Vc) decreases with decrease in wind speed at the sensed position in a case where the sensor output value (Vs) is fixed, the correction section is adapted to estimate the wind speed at the sensed position based on wind speed correlated information correlated with the wind speed at the sensed position or to acquire the wind speed at the sensed position from a wind speed sensor that is adapted to detect the wind speed at the sensed position, characterized in that the correction section is adapted to determine the corrected value (Vc) to be the sensor output value (Vs), when there is no difference between the wind speed at the sensed position and a criterion wind speed (Sd) determined in advance, and the correction section is adapted to determine the corrected value (Vc) to be lower in the particulate concentration than the sensor output value (Vs), when the wind speed at the sensed position is lower than the criterion wind speed (Sd), and the correction section is adapted to increase a difference between the sensor output value (Vs) and the corrected value (Vc) with decrease in wind speed at the sensed position.