Chennai vs Noida
Side-by-side air quality comparison between Chennai and Noida.
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 Noida averaged 182 — a 114-point (168%) gap, with Noida the more polluted and Chennai the cleaner of the two. On 2275 days when both cities reported, Chennai was cleaner on 1955 of them; the average daily gap was 134 AQI points.
Seasonality & days
Chennai peaks in December, while Noida peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Noida was 8.9% Severe and 16.5% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Noida 14 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Noida has improved by 79 AQI points (30.3%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Noida hit AQI 500 at Sector-1 (UPPCB) on 2019-11-01.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Noida spans 4 stations with a 15-point spread (min 195, max 210).