Ahmedabad vs Tiruchirappalli
Side-by-side air quality comparison between Ahmedabad and Tiruchirappalli.
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 | Ahmedabad | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 23.50 | 5.60 |
| PM10(µg/m³) | 38.60 | 6.40 |
| NO₂(µg/m³) | 6.50 | 6.80 |
| SO₂(µg/m³) | 5.20 | 3.40 |
| O₃(µg/m³) | 41.00 | 40.00 |
| CO(µg/m³) | 163.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ahmedabad averaged an AQI of 117 while Tiruchirappalli averaged 50 — a 67-point (134%) gap, with Ahmedabad the more polluted and Tiruchirappalli the cleaner of the two. On 88 days when both cities reported, Tiruchirappalli was cleaner on 88 of them; the average daily gap was 145 AQI points.
Seasonality & days
Ahmedabad peaks in November, while Tiruchirappalli peaks in January. Ahmedabad logged 0.1% Severe days and 23.7% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Ahmedabad 25 days, Tiruchirappalli 46 days.
Year-over-year progress
Ahmedabad has worsened by 52 AQI points (80%) from 2016 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Ahmedabad reached AQI 430 at Raikhad (IITM) on 2023-03-17; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Ahmedabad spans 9 CPCB stations with a 44-point spread (min 95, max 139); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 9 compared to Ahmedabad's 39.