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India: CPCB addresses stark Delhi pollution data gap on Diwali night
Executive Summary
AI-generatedIndia's Central Pollution Control Board (CPCB) clarified that the significant discrepancy between official and private air quality readings in Delhi during Diwali night was due to methodological differences, not data underreporting. The CPCB stated that its monitoring equipment is calibrated only up to 1,000 micrograms per cubic metre, causing extreme pollution spikes to be excluded from the official 24-hour average. The body is currently reviewing its monitoring methodology in light of these events and technological advancements.
Key Insights
- Official CPCB data showed a much lower Air Quality Index (AQI) than private platforms during Diwali, which was blanketed in toxic smog.
- The CPCB attributed the data gap to differences in measurement methodology, asserting that the official figures were not deliberately underreported.
- CPCB analyzers are calibrated to measure particulate matter only up to 1,000 micrograms per cubic metre, excluding extreme readings.
- Several air pollution monitoring stations went offline during the peak pollution period on the festival of lights.
- The CPCB confirmed it is reviewing its existing monitoring methodology to account for advancements in technology and international practices.
Topic context
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