MUMBAI, Nov. 18 -- The Maharashtra Pollution Control Board (MPCB) will begin an ambitious exercise to monitor air pollution across busy traffic junctions in the city using drones (unmanned aerial vehicles or UAVs) this month.

Air quality monitors mounted on drones will provide real-time data on ground level tailpipe emission from vehicles. The exercise is being carried out on an experimental basis to determine the concentration of different pollutants close to the surface, and identify the altitude at which vertical dispersion takes place (natural factors such as wind scattering accumulated particles).

"For ambient air quality, we currently have little knowledge about site-specific concentration of pollutants such as particulate matter, n...