Gummidipoondi vs Nalbāri
Side-by-side air quality comparison between Gummidipoondi and Nalbāri.
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 | Nalbāri |
|---|---|---|
| PM2.5(µg/m³) | 10.60 | 57.90 |
| PM10(µg/m³) | 11.90 | 64.70 |
| NO₂(µg/m³) | 12.70 | 7.60 |
| SO₂(µg/m³) | 6.00 | 5.20 |
| O₃(µg/m³) | 51.00 | 112.00 |
| CO(µg/m³) | 298.00 | 397.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Nalbāri averaged 129 — a 22-point (21%) gap, with Nalbāri the more polluted and Gummidipoondi the cleaner of the two. On 571 days when both cities reported, Gummidipoondi was cleaner on 328 of them; the average daily gap was 67 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Nalbāri peaks in January. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Nalbāri 18 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Nalbāri's 97. That's a significant difference of 79 points.