Abstract: Devices, systems, and method for monitoring air quality are provided. Digital out-of-home advertising display units are located within a geographic area. The units include an electronic display for displaying advertising images located at a housing, an open loop pathway for ambient air extending between an ingestion and exhaustion area of the housing. An air quality monitoring device located along the open loop pathway includes comprising sensor(s) for measuring characteristics of encountered gasses which are electronically communicated by a network connectivity device to a monitoring station. The monitoring station generates visual representations of the received measurements, at least one of which summarizes the measurements from multiple ones of the units.

Abstract: A system and method for monitoring air quality is disclosed. A housing for an electronic display has a first pathway which extends between an ingestion area and an exhaustion area. An air quality monitoring device is located along said pathway and has one or more sensors that measure the concentration of various gases. The air quality monitoring device has a housing with a second pathway which connects an entrance aperture to exit aperture. The entrance aperture being configured to permit a portion of the ambient air in the first pathway to enter the second pathway.