Chennai vs Palwal
Side-by-side air quality comparison between Chennai and Palwal.
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 Palwal averaged 95 — a 27-point (40%) gap, with Palwal the more polluted and Chennai the cleaner of the two. On 1608 days when both cities reported, Chennai was cleaner on 920 of them; the average daily gap was 60 AQI points.
Seasonality & days
Chennai peaks in December, while Palwal peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Palwal was 0.2% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Palwal 37 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Palwal has improved by 91 AQI points (48.9%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Palwal hit AQI 465 at Shyam Nagar (HSPCB) on 2019-11-14.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Palwal spans 1 stations with a 0-point spread (min 120, max 120).