An air quality measurement system is responsible for measuring the amount of contaminants present in the air.
When air quality is good (it has few contaminants), people can breathe this air indefinitely without affecting their health. When bad, some health complications may occur, such as eye irritations, breathing and even heart problems. To keep air quality levels in controlled in ranges that are permissible, the authorities may take measures such as prohibiting the movement of vehicles emitting pollution, or the operation of some industries with certain emission characteristics.