An indoor air quality (IAQ) system for a building, comprising: an IAQ sensor module that is located within the building and that comprises at least one of: a temperature sensor configured to measure a temperature of air at the IAQ sensor module; a relative humidity (RH) sensor configured to measure a RH of the air at the IAQ sensor module; a particulate sensor configured to measure an amount of particulate of at least a predetermined size present in the air at the IAQ sensor module; a volatile organic compound (VOC) sensor configured to measure an amount of VOCs present in the air at the IAQ sensor module; and a carbon dioxide sensor configured to measure an amount of carbon dioxide present in the air at the IAQ sensor module; and a plurality of mitigation devices ; at least one of a thermostat and an IAQ control module configured to, in response to a determination that one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide is greater than a predetermined value while one of the plurality of mitigation devices is off: determine an area between: a baseline value; and a curve formed by the one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide; and selectively turn on the one of the plurality of mitigation devices based on the area. an IAQ sensor module that is located within the building and that comprises at least one of: a temperature sensor configured to measure a temperature of air at the IAQ sensor module; a relative humidity (RH) sensor configured to measure a RH of the air at the IAQ sensor module; a particulate sensor configured to measure an amount of particulate of at least a predetermined size present in the air at the IAQ sensor module; a volatile organic compound (VOC) sensor configured to measure an amount of VOCs present in the air at the IAQ sensor module; and a carbon dioxide sensor configured to measure an amount of carbon dioxide present in the air at the IAQ sensor module; and a plurality of mitigation devices ; a temperature sensor configured to measure a temperature of air at the IAQ sensor module; a relative humidity (RH) sensor configured to measure a RH of the air at the IAQ sensor module; a particulate sensor configured to measure an amount of particulate of at least a predetermined size present in the air at the IAQ sensor module; a volatile organic compound (VOC) sensor configured to measure an amount of VOCs present in the air at the IAQ sensor module; and a carbon dioxide sensor configured to measure an amount of carbon dioxide present in the air at the IAQ sensor module; and a plurality of mitigation devices ; at least one of a thermostat and an IAQ control module configured to, in response to a determination that one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide is greater than a predetermined value while one of the plurality of mitigation devices is off: determine an area between: a baseline value; and a curve formed by the one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide; and selectively turn on the one of the plurality of mitigation devices based on the area. determine an area between: a baseline value; and a curve formed by the one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide; and a baseline value; and a curve formed by the one of the temperature, the RH, the amount of particulate, the amount of VOCs, and the amount of carbon dioxide; and selectively turn on the one of the plurality of mitigation devices based on the area. <EOS>