CPCB Clarifies AQI Discrepancies During Delhi's Diwali Pollution Spike
· India · LiveMint, Hindustan Times
The Central Pollution Control Board has dismissed allegations of under-reporting air quality data in Delhi, attributing discrepancies to hardware limitations and scientific methodology. Older particulate-matter analysers were calibrated to measure only up to 1,000 micrograms per cubic metre, causing the system to treat higher readings as errors during peak firecracker usage. The CPCB noted that its National Air Quality Index reflects sustained 24-hour exposure, whereas private platforms often react to sharp hourly spikes. The agency is currently replacing older instruments and expanding its monitoring network to prevent future data gaps.
Why it matters
The clarification addresses public concern over the accuracy of official pollution data, which is critical for public health policy and emergency measures in Delhi.
Read the original report — LiveMint
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