Chennai vs Kanchipuram
Side-by-side air quality comparison between Chennai and Kanchipuram.
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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Chennai | Kanchipuram |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 9.40 |
| PM10(µg/m³) | 13.10 | 11.10 |
| NO₂(µg/m³) | 14.20 | 10.40 |
| SO₂(µg/m³) | 10.10 | 4.60 |
| O₃(µg/m³) | 56.00 | 44.00 |
| CO(µg/m³) | 308.00 | 243.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Kanchipuram averaged 51 — a 17-point (33%) gap, with Chennai the more polluted and Kanchipuram the cleaner of the two. On 141 days when both cities reported, Kanchipuram was cleaner on 132 of them; the average daily gap was 70 AQI points.
Seasonality & days
Chennai peaks in December, while Kanchipuram peaks in February. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Kanchipuram was 0% Severe and 94% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Kanchipuram 18 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Kanchipuram has improved by 18 AQI points (26.1%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Kanchipuram hit AQI 320 at Kilambi (TNPCB) on 2023-05-22.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Kanchipuram spans 1 stations with a 0-point spread (min 57, max 57).
Verdict
🏆 Kanchipuram has better air quality with an AQI of 16 compared to Chennai's 20.