Chennai vs Katni
Side-by-side air quality comparison between Chennai and Katni.
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 Katni averaged 105 — a 37-point (54%) gap, with Katni the more polluted and Chennai the cleaner of the two. On 1523 days when both cities reported, Chennai was cleaner on 955 of them; the average daily gap was 69 AQI points.
Seasonality & days
Chennai peaks in December, while Katni peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Katni was 0% Severe and 39.3% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Katni 62 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Katni has improved by 93 AQI points (47%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Katni hit AQI 350 at Gole Bazar (MPPCB) on 2019-11-01.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Katni spans 1 stations with a 0-point spread (min 137, max 137).