Dewās vs Gummidipoondi
Side-by-side air quality comparison between Dewās 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 | Dewās | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 31.30 | 10.50 |
| PM10(µg/m³) | 47.80 | 12.00 |
| NO₂(µg/m³) | 7.10 | 11.90 |
| SO₂(µg/m³) | 15.10 | 6.80 |
| O₃(µg/m³) | 66.00 | 52.00 |
| CO(µg/m³) | 208.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Dewās averaged an AQI of 98 while Gummidipoondi averaged 107 — a 9-point (9%) gap, with Gummidipoondi the more polluted and Dewās the cleaner of the two. On 943 days when both cities reported, Dewās was cleaner on 490 of them; the average daily gap was 48 AQI points.
Seasonality & days
Dewās peaks in December, while Gummidipoondi peaks in November. Dewās logged 0% Severe days and 47.7% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Dewās 101 days, Gummidipoondi 49 days.
Year-over-year progress
Dewās has improved by 48 AQI points (32.9%) from 2017 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Dewās reached AQI 327 at Bhopal Chauraha (MPPCB) on 2023-07-01; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Dewās spans 1 CPCB stations with a 0-point spread (min 106, max 106); 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 Dewās's 53.