Gummidipoondi vs Kollam
Side-by-side air quality comparison between Gummidipoondi and Kollam.
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 | Kollam |
|---|---|---|
| PM2.5(µg/m³) | 10.60 | 4.60 |
| PM10(µg/m³) | 11.90 | 7.10 |
| NO₂(µg/m³) | 12.70 | 4.40 |
| SO₂(µg/m³) | 6.00 | 1.50 |
| O₃(µg/m³) | 51.00 | 30.00 |
| CO(µg/m³) | 298.00 | 89.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Kollam averaged 84 — a 23-point (27%) gap, with Gummidipoondi the more polluted and Kollam the cleaner of the two. On 864 days when both cities reported, Kollam was cleaner on 513 of them; the average daily gap was 44 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Kollam peaks in January. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Kollam 65 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Kollam spans 1 stations with a 0-point spread (min 84, max 84).
Verdict
🏆 Kollam has better air quality with an AQI of 8 compared to Gummidipoondi's 18.