Indore vs Kolkata
Side-by-side air quality comparison between Indore and Kolkata.
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, Indore averaged an AQI of 84 while Kolkata averaged 101 — a 17-point (20%) gap, with Kolkata the more polluted and Indore the cleaner of the two. On 1546 days when both cities reported, Indore was cleaner on 919 of them; the average daily gap was 68 AQI points.
Seasonality & days
Indore peaks in November, while Kolkata peaks in January. Indore logged 0% Severe days and 45.099999999999994% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Indore 65 days, Kolkata 75 days.
Year-over-year progress
Indore has improved by 47 AQI points (35.9%) from 2019 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Indore reached AQI 359 at Maguda Nagar (IMC) on 2024-09-18; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Indore spans 6 CPCB stations with a 69-point spread (min 52, max 121); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).