Continuous Ambient Air Quality Monitoring Network (Kolkata)
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Kolkata's pollution board runs monitors across the city feeding a public dashboard — but the 2024 data they produced, PM2.5 at 45.6 µg/m³, worst in India after Delhi, triggers no automatic response.
what does this mean?
The strongest source is an independent non-academic evaluation: an audit office, a government or EU review, or an NGO. It grades who did the looking — not how well the project went. All four grades →Part of 1001 Smart Cities — 1,167 documented projects · 🏙️ 6 more in Kolkata · 🌫️ Air quality guide · 🌱 Environment projects
The West Bengal Pollution Control Board (WBPCB) — a state agency, not Kolkata Municipal Corporation — operates continuous ambient air-quality monitoring stations (CAAQMS) in Kolkata, including at least two automatic stations at Victoria Memorial and Rabindra Bharati University plus several more named monitoring points (Ballygunge, Fort William, Jadavpur, Rabindra Sarobar) feeding both WBPCB's own EMIS citizen portal and the national Central Pollution Control Board's real-time Air Quality Index. The network measures, but Kolkata's air keeps failing what it measures: independent analysis by the University of Chicago's Energy Policy Institute found Kolkata's 2024 annual average PM2.5 at 45.6 micrograms per cubic metre — nearly nine times the WHO guideline and the second-worst among Indian metros after Delhi — and WBPCB's own chairman has publicly conceded it will be hard to cut pollution further without addressing sources outside the city's "regional air-shed." Unlike Delhi's GRAP, a bad Kolkata reading does not automatically trigger any enforcement action.
🎓 Lesson
A public monitoring network that faithfully reports bad air is not the same project as one that acts on it — Kolkata has the former; Delhi's GRAP, by contrast, wires its readings to an automatic trigger.
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1001 Smart Cities (2026). “Continuous Ambient Air Quality Monitoring Network (Kolkata)” — Kolkata, India. The Smart City Atlas. https://1001smartcities.org/projects/kolkata-wbpcb-air-quality-monitoring/ (last verified 2026-08-02). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.