Gummidipoondi vs Siliguri
Side-by-side air quality comparison between Gummidipoondi and Siliguri.
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 | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 10.50 | 77.80 |
| PM10(µg/m³) | 12.00 | 98.30 |
| NO₂(µg/m³) | 11.90 | 11.30 |
| SO₂(µg/m³) | 6.80 | 6.80 |
| O₃(µg/m³) | 52.00 | 115.00 |
| CO(µg/m³) | 286.00 | 523.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Siliguri averaged 81 — a 26-point (32%) gap, with Gummidipoondi the more polluted and Siliguri the cleaner of the two. On 680 days when both cities reported, Siliguri was cleaner on 347 of them; the average daily gap was 55 AQI points.
Seasonality & days
Gummidipoondi peaks in November, while Siliguri peaks in February. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Siliguri 180 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Siliguri's 160. That's a significant difference of 142 points.