Peripheral monitoring stations skewing Delhi's air quality index, HT analysis finds
· India · Hindustan Times, Indian Express
A Hindustan Times analysis of Delhi's air quality monitoring network found that newly added stations on the city's periphery are significantly inflating the overall Air Quality Index. The study revealed a widening discrepancy between the central monitoring system and the expanded network, with the new stations reporting consistently higher pollution levels. This geographical imbalance raises concerns about the accuracy of the data used to trigger emergency measures under the Graded Response Action Plan. The analysis examined data collected over a period preceding Diwali, when pollution levels typically peak across the national capital region.
Why it matters
Delhi residents relying on the official AQI to make health decisions may be misled by inflated pollution readings from peripheral stations, potentially delaying protective measures during critical pollution episodes. The discrepancy directly impacts the effectiveness of GRAP-III curbs, which are triggered based on the officially reported index values. Accurate hyperlocal data is essential for triggering timely construction bans, truck entry restrictions, and public health advisories during winte
Read the original report — Hindustan Times
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