Alwar vs Gummidipoondi
Side-by-side air quality comparison between Alwar 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 | Alwar | Gummidipoondi |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 10.50 |
| PM10(µg/m³) | 158.30 | 12.00 |
| NO₂(µg/m³) | 14.30 | 11.90 |
| SO₂(µg/m³) | 8.50 | 6.80 |
| O₃(µg/m³) | 76.00 | 52.00 |
| CO(µg/m³) | 357.00 | 286.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Gummidipoondi averaged 107 — a 19-point (22%) gap, with Gummidipoondi the more polluted and Alwar the cleaner of the two. On 1024 days when both cities reported, Alwar was cleaner on 608 of them; the average daily gap was 43 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Gummidipoondi was 0% Severe and 59.1% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Gummidipoondi 49 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Gummidipoondi has worsened by 8 AQI points (8.1%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Gummidipoondi hit AQI 326 at Anthoni Pillai Nagar (TNPCB) on 2023-12-22.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); 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 Alwar's 139. That's a significant difference of 121 points.