Chandigarh vs Gummidipoondi
Side-by-side air quality comparison between Chandigarh 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 | Chandigarh | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 46.30 | 10.50 |
| PM10(µg/m³) | 63.60 | 12.00 |
| NO₂(µg/m³) | 30.10 | 11.90 |
| SO₂(µg/m³) | 10.30 | 6.80 |
| O₃(µg/m³) | 64.00 | 52.00 |
| CO(µg/m³) | 602.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Gummidipoondi averaged 107 — a 46-point (43%) gap, with Chandigarh the more polluted and Gummidipoondi the cleaner of the two. On 1034 days when both cities reported, Gummidipoondi was cleaner on 758 of them; the average daily gap was 75 AQI points.
Seasonality & days
Chandigarh peaks in January, while Gummidipoondi peaks in November. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Gummidipoondi 49 days.
Year-over-year progress
Chandigarh has worsened by 27 AQI points (21.4%) from 2019 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Gummidipoondi spans 1 stations with a 0-point spread (min 99, max 99).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Chandigarh's 78. That's a significant difference of 60 points.