US Patent 10112618 Traffic pollution indicator

A traffic pollution indicator mounts to an air vent of a car or other vehicle to detect pollution and present pollution information to passengers. The traffic pollution indicator includes one or more sensors for detecting pollution, one or more microcontrollers and one or more communication devices to communicate with one or more display devices. Pollution is typically detected as a change in pollution levels by the traffic pollution indicator. Various display devices or a screen of the traffic pollution indicator present sensor information, in various visual representations, to passengers.