Gummidipoondi vs Kalyān
Side-by-side air quality comparison between Gummidipoondi and Kalyān.
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 | Gummidipoondi | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 10.60 | 22.10 |
| PM10(µg/m³) | 11.90 | 40.40 |
| NO₂(µg/m³) | 12.70 | 23.10 |
| SO₂(µg/m³) | 6.00 | 21.70 |
| O₃(µg/m³) | 51.00 | 19.00 |
| CO(µg/m³) | 298.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Kalyān averaged 95 — a 12-point (13%) gap, with Gummidipoondi the more polluted and Kalyān the cleaner of the two. On 665 days when both cities reported, Gummidipoondi was cleaner on 406 of them; the average daily gap was 59 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Kalyān peaks in January. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Kalyān 78 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Kalyān's 40.