Chennai vs Indore
Side-by-side air quality comparison between Chennai and Indore.
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, Chennai averaged an AQI of 68 while Indore averaged 84 — a 16-point (24%) gap, with Indore the more polluted and Chennai the cleaner of the two. On 1546 days when both cities reported, Chennai was cleaner on 860 of them; the average daily gap was 52 AQI points.
Seasonality & days
Chennai peaks in December, while Indore peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Indore was 0% Severe and 45.099999999999994% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Indore 65 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Indore has improved by 47 AQI points (35.9%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Indore hit AQI 359 at Maguda Nagar (IMC) on 2024-09-18.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Indore spans 6 stations with a 69-point spread (min 52, max 121).