Bidar vs Gummidipoondi
Side-by-side air quality comparison between Bidar 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 | Bidar | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 16.00 | 10.50 |
| PM10(µg/m³) | 23.10 | 12.00 |
| NO₂(µg/m³) | 6.30 | 11.90 |
| SO₂(µg/m³) | 2.50 | 6.80 |
| O₃(µg/m³) | 68.00 | 52.00 |
| CO(µg/m³) | 199.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bidar averaged an AQI of 85 while Gummidipoondi averaged 107 — a 22-point (26%) gap, with Gummidipoondi the more polluted and Bidar the cleaner of the two. On 599 days when both cities reported, Bidar was cleaner on 419 of them; the average daily gap was 45 AQI points.
Seasonality & days
Bidar peaks in January, while Gummidipoondi peaks in November. Bidar logged 0.1% Severe days and 72.5% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Gummidipoondi 49 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); 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 Bidar's 27.