Considered about one-thirtieth the width of a human hair, PM2.5 consists of dust, black carbon, heavy metals, sulphates, nitrates and smoke, particles capable of penetrating deep into the lungs and bloodstream.

Considered about one-thirtieth the width of a human hair, PM2.5 consists of dust, black carbon, heavy metals, sulphates, nitrates and smoke, particles capable of penetrating deep into the lungs and bloodstream.

The report reveals serious negligence by the Haryana State Pollution Control Board (HSPCB). Out of 37 Continuous Ambient Air Quality Monitoring Stations (CAAQMS) set up across the state, 35 remained non-functional for several months.