An air quality monitoring network (AQMN) having the ability to provide high spatial resolution real-time information is one of the key tools for developing management strategies for air quality improvement. National Environmental Engineering Research Institute (CSIR-NEERI) has deployed a Sensor-based Wireless Air Quality Monitoring Network (SWAQMN) to monitor real-time particulate matter (PM₁₀ and PM_2.5) concentrations in a highly urbanized megacity, Delhi, the capital of India. The sensors are equipped in a device, called Polludrone and located at ten locations covering different land use and source activities in the city. The Polludrone monitored data was compared with another calibrated PM monitor (GRIMM) for PM₁₀ and PM_2.5 concentrations and found a similar trend with correlation coefficient (r²) values of 0.73 and 0.85, respectively. The hourly average concentrations of PM₁₀ and PM_2.5 were found to be 446 and 242 μg/m³ by PM monitor, whereas the Polludrone recorded corresponding values as 314 μg/m³ and 176 μg/m³, respectively. Daily, diurnal and seasonal variability in PM₁₀ and PM_2.5 levels are analyzed at 09 locations in Delhi city using SWAQMN. Further, sensor's monitored data were compared with nearest located Continuous Ambient Air Quality Monitoring Stations (CAAQMS) in the form of Air Quality Index (AQI) and found the AQI values are comparable in all the four seasons. The sensor monitored low AQI values as compared to CAAQMS during monsoon and summer seasons. The present analysis suggests that the sensor-based network (low/affordable cost) can be successfully operated to get the real time air quality levels in an urban area.

能够提供高空间分辨率实时信息的空气质量监测网络（AQMN）是制定改善空气质量管理策略的关键工具之一。美国国家环境工程研究院（CSIR-NEERI）已部署了基于传感器的无线空气质量监测网络（SWAQMN），以监测城市高度发达的大都市德里的实时颗粒物（PM ₁₀和PM _2.5）浓度。印度。传感器安装在称为Polludrone的设备中，位于十个地点，涵盖城市中不同的土地利用和源活动。将Polludrone监测的数据与另一个针对PM ₁₀和PM _2.5的校准PM监测器（GRIMM）进行了比较浓度并发现相似的趋势，相关系数（r ²）值分别为0.73和0.85。通过PM监测仪发现，PM ₁₀和PM _2.5的每小时平均浓度分别为446和242μg / m ³，而Polludrone记录的相应值分别为314μg/ m ³和176μg / m ³。PM ₁₀和PM _2.5中的每日，每日和季节性变化使用SWAQMN在德里市的09个地点分析了这些污染物的水平。此外，以空气质量指数（AQI）的形式将传感器的监测数据与最近的连续环境空气质量监测站（CAAQMS）进行了比较，发现在所有四个季节中AQI值均具有可比性。与季风和夏季相比，CAAQMS传感器监测的AQI值较低。目前的分析表明，基于传感器的网络（低/负担得起的成本）可以成功运行，以获取市区的实时空气质量水平。