Cuddalore vs Gummidipoondi
Side-by-side air quality comparison between Cuddalore 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 | Cuddalore | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 13.70 | 10.60 |
| PM10(µg/m³) | 17.10 | 11.90 |
| NO₂(µg/m³) | 16.80 | 12.70 |
| SO₂(µg/m³) | 7.60 | 6.00 |
| O₃(µg/m³) | 36.00 | 51.00 |
| CO(µg/m³) | 425.00 | 298.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Gummidipoondi averaged 107 — a 55-point (106%) gap, with Gummidipoondi the more polluted and Cuddalore the cleaner of the two. On 314 days when both cities reported, Cuddalore was cleaner on 285 of them; the average daily gap was 53 AQI points.
Seasonality & days
Cuddalore peaks in January, while Gummidipoondi peaks in November. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Gummidipoondi 49 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); 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 Cuddalore's 23.