Air quality monitoring stations unevenly distributed in Delhi-NCR

Delhi currently has 39 continuous air quality monitoring stations. However, most of them are situated in the southern and central parts of the city. Peripheral and north-western regions have very few stations, and some parts of the National Capital Region do not have a single monitoring point.

According to the Centre for Science and Environment, about 28 per cent of Delhi’s area is well monitored, while 49 per cent is within a 5km buffer zone. Around 21 per cent falls into a data shadow zone, meaning these areas receive very limited information on real-time air quality.

Experts say that without proper monitoring, the authorities cannot accurately assess pollution levels or design effective clean-air policies. They also warn that heavily populated outer regions remain significantly under-monitored. The report calls for a better spread of stations and stronger scientific planning to improve air-quality management across the city.

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