Delhi's vibrant colours pale as the city gasps for air each winter. Pollution levels soar, with the AQI often exceeding 500. In 2015, the Delhi High Court dubbed the city a ‘gas chamber’ due to its escalating pollution, demanding urgent action from both State and Central governments. With the air quality dipping each year, Delhi implements various measures to combat this crisis. One is the odd-even rule, which the government tried for a few years with limited success.   This year, in response to rising pollution levels, the Graded Response Action Plan (GRAP) was enforced, introducing specific rules based on pollution…

Imagine a scenario where Chennai's residents can access real-time air quality data of their surroundings to decide whether to step out, stay home, or avoid certain routes. This level of air pollution monitoring could well be a reality soon. Currently, Chennai relies on two main systems of air quality monitoring — manual monitoring stations and Continuous Ambient Air Quality Monitoring Stations (CAAQMS). While these are crucial, theoy come with high operational costs; around Rs 3 lakh for manual stations and several crores for CAAQMS setups. The Indian Institute of Technology Madras (IIT-M) has developed a mobile air pollution monitoring sensor…