Gummidipoondi vs Gwalior
Side-by-side air quality comparison between Gummidipoondi and Gwalior.
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 | Gwalior |
|---|---|---|
| PM2.5(µg/m³) | 10.50 | 39.10 |
| PM10(µg/m³) | 12.00 | 89.40 |
| NO₂(µg/m³) | 11.90 | 12.30 |
| SO₂(µg/m³) | 6.80 | 6.20 |
| O₃(µg/m³) | 52.00 | 61.00 |
| CO(µg/m³) | 286.00 | 248.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Gwalior averaged 136 — a 29-point (27%) gap, with Gwalior the more polluted and Gummidipoondi the cleaner of the two. On 722 days when both cities reported, Gummidipoondi was cleaner on 559 of them; the average daily gap was 71 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Gummidipoondi logged 0% Severe days and 59.1% Good-or-Satisfactory days; Gwalior was 0.4% Severe and 31.5% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Gwalior 47 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Gwalior has improved by 12 AQI points (8.1%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Gwalior hit AQI 450 at City Center (MPPCB) on 2021-11-09.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Gwalior spans 4 stations with a 53-point spread (min 112, max 165).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 18 compared to Gwalior's 90. That's a significant difference of 72 points.