Ranchi Faces Rising Pollution After Festive Fireworks, AQI Hits 193

Air quality in Ranchi took a downturn after the Diwali celebrations, with the Air Quality Index (AQI) climbing to 193 in some parts of the city. Records over three days show a continuous rise: the daily average AQI moved from 142‑152 on November 7, to 156‑164 on November 8, and peaked between 163 and 189 on November 9.

The most polluted zones were Sector‑2 (193), Deepatoli (191), Dhumsatoli and Gandhi Nagar Colony (both 189), and Kokar Chowk (186). PM2.5 particles remained the chief contaminant, amplified by firecracker emissions and the fine ash they release.

Cooler temperatures and weak wind currents typical of early November limited the vertical mixing of air, allowing pollutants to accumulate near the ground. This effect is most pronounced during dawn and dusk, when temperature inversions often trap particulate matter.

Medical professionals caution that elevated PM2.5 can penetrate deep into the respiratory tract, posing serious health risks for children, seniors, and individuals with pre‑existing lung conditions. They recommend limiting outdoor exposure during high‑pollution windows and avoiding intense physical activities outdoors.

While Diwali fireworks contributed significantly to the spike, authorities note that vehicle exhaust, road dust, and the prevailing weather pattern also played substantial roles in the post‑festival pollution surge.