Chennai vs Faridabad
Side-by-side air quality comparison between Chennai and Faridabad.
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 Faridabad averaged 181 — a 113-point (166%) gap, with Faridabad the more polluted and Chennai the cleaner of the two. On 2190 days when both cities reported, Chennai was cleaner on 1857 of them; the average daily gap was 132 AQI points.
Seasonality & days
Chennai peaks in December, while Faridabad peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Faridabad was 6.9% Severe and 15.7% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Faridabad 19 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Faridabad has improved by 42 AQI points (18.8%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Faridabad hit AQI 500 at New Industrial Town (HSPCB) on 2024-05-10.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Faridabad spans 4 stations with a 25-point spread (min 184, max 209).