The Aérophile Company which manufactures tethered gas balloons as tourist and cultural attractions recently announced the launch of its tethered gas balloon called the AERO30NG Aérophile 5500 model. The purpose of this model is twofold. The balloon will serve as a tourist attraction but more importantly using a color coded system it will report the degree of atmospheric pollution. Located in the Parc Andre Citroën in Paris, the balloon’s color will change based on the level of pollution. Airparif, which is an organization in France that measures the air quality in France, will collect pollution data using several sensors located throughout the city of Paris. Two measurements of pollution will be displayed by the balloon - ambient air quality and air pollution produced by automobile emissions. According to Physorg.com:
The balloon’s color signifies the ambient air quality using three projectors that are located in the middle of the balloon. For example, red signifies highly polluted air, orange for polluted, yellow for moderate, light green for clean, and green for very clean.
In addition to monitoring the pollution levels the balloon will provide non-polluting rides for up to 30 people at a time.