Ariyalur vs Gummidipoondi
Side-by-side air quality comparison between Ariyalur 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 | Ariyalur | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 10.50 |
| PM10(µg/m³) | 8.30 | 12.00 |
| NO₂(µg/m³) | 7.50 | 11.90 |
| SO₂(µg/m³) | 6.50 | 6.80 |
| O₃(µg/m³) | 43.00 | 52.00 |
| CO(µg/m³) | 133.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Gummidipoondi averaged 107 — a 61-point (133%) gap, with Gummidipoondi the more polluted and Ariyalur the cleaner of the two. On 546 days when both cities reported, Ariyalur was cleaner on 525 of them; the average daily gap was 67 AQI points.
Seasonality & days
Ariyalur peaks in March, while Gummidipoondi peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Gummidipoondi 49 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Gummidipoondi spans 1 stations with a 0-point spread (min 99, max 99).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Gummidipoondi's 18.