Chennai vs Chittoor
Side-by-side air quality comparison between Chennai and Chittoor.
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 Chittoor averaged 76 — a 8-point (12%) gap, with Chittoor the more polluted and Chennai the cleaner of the two. On 281 days when both cities reported, Chittoor was cleaner on 225 of them; the average daily gap was 39 AQI points.
Seasonality & days
Chennai peaks in December, while Chittoor peaks in October. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Chittoor was 0% Severe and 84.9% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Chittoor 37 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Chittoor has worsened by 5 AQI points (7%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Chittoor hit AQI 348 at Gangineni Cheruvu (APPCB) on 2023-11-13.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Chittoor spans 1 stations with a 0-point spread (min 72, max 72).