Cuddalore vs Tiruchirappalli
Side-by-side air quality comparison between Cuddalore 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 | Cuddalore | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 15.00 | 5.60 |
| PM10(µg/m³) | 18.20 | 6.40 |
| NO₂(µg/m³) | 15.90 | 6.80 |
| SO₂(µg/m³) | 10.00 | 3.40 |
| O₃(µg/m³) | 39.00 | 40.00 |
| CO(µg/m³) | 353.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Tiruchirappalli averaged 50 — a 2-point (4%) gap, with Cuddalore the more polluted and Tiruchirappalli the cleaner of the two. On 61 days when both cities reported, Tiruchirappalli was cleaner on 43 of them; the average daily gap was 26 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Tiruchirappalli 46 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); 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 Cuddalore's 25.