Gummidipoondi vs Hisar
Side-by-side air quality comparison between Gummidipoondi and Hisar.
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 | Hisar |
|---|---|---|
| PM2.5(µg/m³) | 7.70 | 65.20 |
| PM10(µg/m³) | 10.90 | 421.90 |
| NO₂(µg/m³) | 2.40 | 0.00 |
| SO₂(µg/m³) | 7.40 | 5.60 |
| O₃(µg/m³) | 108.00 | 156.00 |
| CO(µg/m³) | 145.00 | 230.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Gummidipoondi averaged an AQI of 107 while Hisar averaged 136 — a 29-point (27%) gap, with Hisar the more polluted and Gummidipoondi the cleaner of the two. On 646 days when both cities reported, Gummidipoondi was cleaner on 482 of them; the average daily gap was 84 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; Hisar was 1.6% Severe and 29.700000000000003% Good-or-Satisfactory. Longest clean-air streaks: Gummidipoondi 49 days, Hisar 34 days.
Year-over-year progress
Gummidipoondi has worsened by 8 AQI points (8.1%) from 2021 to 2024; Hisar has improved by 39 AQI points (22.3%) over the same window. The worst recorded day for Gummidipoondi reached AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22; Hisar hit AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02.
Station-level disparity
Gummidipoondi spans 1 CPCB stations with a 0-point spread (min 99, max 99); Hisar spans 1 stations with a 0-point spread (min 168, max 168).
Verdict
🏆 Gummidipoondi has better air quality with an AQI of 13 compared to Hisar's 390. That's a significant difference of 377 points.