Chennai vs Kishanganj
Side-by-side air quality comparison between Chennai and Kishanganj.
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 Kishanganj averaged 144 — a 76-point (112%) gap, with Kishanganj the more polluted and Chennai the cleaner of the two. On 623 days when both cities reported, Chennai was cleaner on 414 of them; the average daily gap was 86 AQI points.
Seasonality & days
Chennai peaks in December, while Kishanganj peaks in January. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Kishanganj was 0.2% Severe and 37.099999999999994% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Kishanganj 23 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Kishanganj has improved by 136 AQI points (48.6%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Kishanganj hit AQI 417 at SDM Office Khagra (BSPCB) on 2022-02-01.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Kishanganj spans 1 stations with a 0-point spread (min 156, max 156).