Kannur vs Tiruchirappalli
Side-by-side air quality comparison between Kannur 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 | Kannur | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 5.00 | 5.40 |
| PM10(µg/m³) | 9.60 | 6.60 |
| NO₂(µg/m³) | 2.80 | 7.20 |
| SO₂(µg/m³) | 1.00 | 3.10 |
| O₃(µg/m³) | 50.00 | 38.00 |
| CO(µg/m³) | 138.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kannur averaged an AQI of 65 while Tiruchirappalli averaged 50 — a 15-point (30%) gap, with Kannur the more polluted and Tiruchirappalli the cleaner of the two. On 43 days when both cities reported, Kannur was cleaner on 28 of them; the average daily gap was 21 AQI points.
Seasonality & days
Kannur peaks in February, while Tiruchirappalli peaks in January. Kannur logged 0% Severe days and 92% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Kannur 103 days, Tiruchirappalli 46 days.
Year-over-year progress
Kannur has worsened by 11 AQI points (20.4%) from 2020 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Kannur reached AQI 258 at Thavakkara Kannur (PCB) on 2021-04-14; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Kannur spans 1 CPCB stations with a 0-point spread (min 66, max 66); 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 Kannur's 10.