Kolkata City Dashboard
A city warming at +0.03°C per decade, where 218 million Metro rides a year coexist with shrinking wetlands and the lowest crime rate among India's major metros. Across 19 domains and 30+ open data sources, this dashboard turns Kolkata's public records into an interactive portrait of a metropolis in transition.
Population
15.9M
Urban Agglomeration, 2026 est.
Max / Min Temp
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Warming Trend
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Per decade since 1951
Latest AQI
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Temp–AQI Link
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Correlation (−1 = strong inverse)
Crime Rate
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Per 100K people, 2023 (lowest among 6 metros)
Explore the Data
Demographics
The only major Indian metro losing population — 125 years of Census data tell the story
Climate & Weather
Kolkata is warming at +0.032°C per decade. 73 years of India Meteorological Dept records show the shift.
Air Quality
Winter inversions trap pollution, monsoons wash it away. Daily AQI since 2022.
Healthcare
97.5% institutional births but 58% women anemic — National Family Health Survey reveals the paradox
Education
86.5% government schools, 99.6% have electricity — but only 31% have computer labs
Crime & Safety
Lowest crime rate among India's 6 major metros at 68.7 per 100K
Traffic & Transport
Metro ridership fully recovered post-COVID. Road deaths declining since 2018.
Budget & Governance
Where Kolkata Municipal Corporation's money comes from and where it goes — a decade of municipal finance
Cross-Domain Insights
When temperature drops, pollution spikes. Weather, AQI, and governance connected.
Real Estate
Housing price index trends — NHB RESIDEX and RBI HPI for Kolkata vs other metros, size-wise affordability.
Employment
Workforce participation, unemployment trends, and informal economy composition from PLFS and e-Shram.
Energy
Electricity consumption, peak demand, and T&D losses — CEA state data plus CESC city-level insights.
Digital Infra
Telecom subscriber growth, internet penetration, and public grievance resolution for Kolkata Metro circle.
Disease Surveillance
Dengue, malaria, and waterborne disease outbreaks — seasonal patterns linked to climate and flooding.
Water & Flooding
Hooghly river gauge levels, monsoon flood events, and rainfall-flooding correlations.
Judiciary
Case pendency, institution vs disposal trends, and judge-to-population ratios for Kolkata courts.
Land Use
Urban green cover change, built-up expansion, and East Kolkata Wetlands shrinkage from satellite data.
Open-Meteo API — Weather & Air Quality
India Meteorological Dept (OpenCity.in) — Temperature 1951-2024
National Crime Records Bureau (OpenCity.in) — Crime 2021-2023
National Family Health Survey (NFHS-5) — Healthcare Indicators
Unified District Info System for Education (OpenCity.in) — Education Data
Kolkata Metro / Indian Railways — Ridership
WB Traffic Police — Road Accidents
Census 2011 — Demographics & Amenities
Kolkata Municipal Corporation Budget Statements — Finance 2017-2027
Official Hospital Websites + WB Dept. of H&FW — Infrastructure
RBI Housing Price Index (DBIE) + NHB RESIDEX — Real Estate 2009-2024
Periodic Labour Force Survey (PLFS) — Employment 2017-2024
e-Shram Portal — Informal Worker Registrations
Central Electricity Authority (CEA) + CESC — Energy 2014-2024
TRAI Quarterly Performance Reports — Telecom 2015-2024
CPGRAMS (DARPG) — Public Grievance Resolution 2018-2024
IDSP/NVBDCP — Disease Surveillance 2018-2024
Central Water Commission — Flood Gauge Data 2015-2025
National Judicial Data Grid (NJDG) + India Justice Report — Judiciary 2018-2024
ISRO Bhuvan LULC + Copernicus Global Land Cover — Land Use 2005-2022
Ramsar / EKWMA Reports — East Kolkata Wetlands Area
Election Commission of India + WBSEC (OpenCity.in) — KMC Elections 2010-2021
Demographics & Wards — KMC (city proper), 144 wards, ~206 sq km. Source: Census 2011.
Climate — Alipore Observatory (IMD station, south Kolkata, within KMC) + Open-Meteo reanalysis (~25 km grid cell).
Air Quality — Open-Meteo / CAMS atmospheric model (~40 km grid cell centred on Kolkata). Modeled, not station-observed.
Healthcare — Kolkata revenue district (~185 sq km, slightly smaller than KMC). Source: NFHS-5.
Education — Kolkata education district (~185 sq km, approx. matches revenue district). Source: UDISE+.
Crime — Kolkata Police Commissionerate (~530 sq km, ~2.5x larger than KMC). Source: NCRB.
Transport — Mixed: Metro network (cross-boundary), city accidents (Kolkata Police area), state data (all West Bengal), NH data (national highways).
Budget — KMC (~206 sq km). Source: KMC budget statements.
Real Estate — RBI HPI covers 10 cities (Kolkata as a whole); NHB RESIDEX covers metro-level assessment.
Employment — WB Urban (PLFS proxy for Kolkata metro); e-Shram covers Kolkata district registrations.
Energy — State-level (WB) for CEA data; city-level for CESC licensed area (~567 sq km, larger than KMC).
Digital — Kolkata Metro telecom circle (TRAI); CPGRAMS covers West Bengal state.
Disease — Kolkata district. Curated from IDSP weekly reports and NVBDCP summaries (PDF-only).
Water — Garden Reach gauge station, Hooghly River. CWC flood bulletins (PDF-only, curated).
Judiciary — Kolkata district courts (4 courts); Calcutta High Court (state-level). Source: NJDG snapshots.
Land Use — KMC area (~206 sq km). Satellite-derived from ISRO Bhuvan + Copernicus. Built-up trend extended to 2022.
Population (home page) — Urban Agglomeration (~1,204 sq km, includes Howrah, Salt Lake, etc.). Source: UN World Urbanization Prospects.