India, Dec. 25 -- With the air quality oscillating between the "severe" and "poor" categories over the past week across the National Capital Region (NCR), the Noida authority has focused on monitoring, mitigation and enforcement measures as its response under the Graded Response Action Plan (Grap), official records suggest.

In Noida region, between December 14 and December 22, dust suppression formed a key part of the response as pollution control measure. Treated water was sprinkled daily across nearly 280 km of road stretches, while static and truck-mounted anti-smog guns were operated at designated locations to curb particulate pollution.

On Wednesday (December 24), the air quality index (AQI) stood at 273 in Noida and 259 in Greater...