Nagapattinam vs Tiruchirappalli
Side-by-side air quality comparison between Nagapattinam 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 | Nagapattinam | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 11.50 | 3.70 |
| PM10(µg/m³) | 16.20 | 4.40 |
| NO₂(µg/m³) | 1.50 | 1.10 |
| SO₂(µg/m³) | 3.10 | 1.90 |
| O₃(µg/m³) | 100.00 | 90.00 |
| CO(µg/m³) | 174.00 | 116.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nagapattinam averaged an AQI of 60 while Tiruchirappalli averaged 50 — a 10-point (20%) gap, with Nagapattinam the more polluted and Tiruchirappalli the cleaner of the two. On 34 days when both cities reported, Tiruchirappalli was cleaner on 25 of them; the average daily gap was 13 AQI points.
Seasonality & days
Nagapattinam peaks in November, while Tiruchirappalli peaks in January. Nagapattinam logged 0% Severe days and 91.5% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Nagapattinam 8 days, Tiruchirappalli 46 days.
Year-over-year progress
The worst recorded day for Nagapattinam reached AQI 113 at Velippalayam (TNPCB) on 2024-12-16; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Nagapattinam spans 1 CPCB stations with a 0-point spread (min 60, max 60); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 6 compared to Nagapattinam's 19.