Chapra vs Gummidipoondi
Side-by-side air quality comparison between Chapra 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Gummidipoondi averaged 107 — a 42-point (39%) gap, with Chapra the more polluted and Gummidipoondi the cleaner of the two. On 716 days when both cities reported, Gummidipoondi was cleaner on 543 of them; the average daily gap was 106 AQI points.
Seasonality & days
Chapra peaks in January, while Gummidipoondi peaks in November. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Gummidipoondi 49 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Gummidipoondi spans 1 stations with a 0-point spread (min 99, max 99).