Chandrapur vs Gummidipoondi
Side-by-side air quality comparison between Chandrapur and Gummidipoondi.
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 | Chandrapur | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 22.50 | 10.50 |
| PM10(µg/m³) | 32.50 | 12.00 |
| NO₂(µg/m³) | 9.80 | 11.90 |
| SO₂(µg/m³) | 13.50 | 6.80 |
| O₃(µg/m³) | 87.00 | 52.00 |
| CO(µg/m³) | 183.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2022, Chandrapur averaged an AQI of 123 while Gummidipoondi averaged 107 — a 16-point (15%) gap, with Chandrapur the more polluted and Gummidipoondi the cleaner of the two. On 341 days when both cities reported, Gummidipoondi was cleaner on 232 of them; the average daily gap was 69 AQI points.
Seasonality & days
Chandrapur peaks in March, while Gummidipoondi peaks in November. Chandrapur logged 0.3% Severe days and 58.800000000000004% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Chandrapur 37 days, Gummidipoondi 49 days.
Year-over-year progress
Chandrapur has improved by 1 AQI points (0.8%) from 2017 to 2022; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Chandrapur reached AQI 500 at MIDC Khutala (MPCB) on 2017-11-14; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Chandrapur spans 1 CPCB stations with a 0-point spread (min 100, max 100); Gummidipoondi spans 1 stations with a 0-point spread (min 99, max 99).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Chandrapur's 38.