Puducherry vs Tiruchirappalli
Side-by-side air quality comparison between Puducherry 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 | Puducherry | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 16.40 | 5.60 |
| PM10(µg/m³) | 19.20 | 6.40 |
| NO₂(µg/m³) | 18.50 | 6.80 |
| SO₂(µg/m³) | 8.80 | 3.40 |
| O₃(µg/m³) | 37.00 | 40.00 |
| CO(µg/m³) | 394.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Puducherry averaged an AQI of 55 while Tiruchirappalli averaged 50 — a 5-point (10%) gap, with Puducherry the more polluted and Tiruchirappalli the cleaner of the two. On 85 days when both cities reported, Tiruchirappalli was cleaner on 65 of them; the average daily gap was 21 AQI points.
Seasonality & days
Puducherry peaks in December, while Tiruchirappalli peaks in January. Puducherry logged 0% Severe days and 95.4% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Puducherry 117 days, Tiruchirappalli 46 days.
Year-over-year progress
Puducherry has worsened by 1 AQI points (1.9%) from 2021 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Puducherry reached AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Puducherry spans 1 CPCB stations with a 0-point spread (min 56, max 56); 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 Puducherry's 27.