Kolkata vs Mangalore
Side-by-side air quality comparison between Kolkata and Mangalore.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Mangalore averaged 61 — a 40-point (66%) gap, with Kolkata the more polluted and Mangalore the cleaner of the two. On 895 days when both cities reported, Mangalore was cleaner on 798 of them; the average daily gap was 98 AQI points.
Seasonality & days
Kolkata peaks in January, while Mangalore peaks in February. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Mangalore was 0% Severe and 87.2% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Mangalore 64 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Mangalore has improved by 9 AQI points (12.9%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Mangalore hit AQI 235 at Kadri (KSPCB) on 2023-11-17.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Mangalore spans 1 stations with a 0-point spread (min 68, max 68).