Nagapattinam vs Thrissur
Side-by-side air quality comparison between Nagapattinam and Thrissur.
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 | Thrissur |
|---|---|---|
| PM2.5(µg/m³) | 12.50 | 8.60 |
| PM10(µg/m³) | 16.20 | 10.10 |
| NO₂(µg/m³) | 9.80 | 9.80 |
| SO₂(µg/m³) | 4.10 | 3.30 |
| O₃(µg/m³) | 38.00 | 29.00 |
| CO(µg/m³) | 211.00 | 163.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nagapattinam averaged an AQI of 60 while Thrissur averaged 57 — a 3-point (5%) gap, with Nagapattinam the more polluted and Thrissur the cleaner of the two. On 43 days when both cities reported, Thrissur was cleaner on 29 of them; the average daily gap was 20 AQI points.
Seasonality & days
Nagapattinam peaks in November, while Thrissur peaks in February. Nagapattinam logged 0% Severe days and 91.5% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Nagapattinam 8 days, Thrissur 52 days.
Year-over-year progress
The worst recorded day for Nagapattinam reached AQI 113 at Velippalayam (TNPCB) on 2024-12-16; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Nagapattinam spans 1 CPCB stations with a 0-point spread (min 60, max 60); Thrissur spans 1 stations with a 0-point spread (min 68, max 68).
Verdict
🏆 Thrissur has better air quality with an AQI of 14 compared to Nagapattinam's 21.