Karnal vs Thrissur
Side-by-side air quality comparison between Karnal 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 | Karnal | Thrissur |
|---|---|---|
| PM2.5(µg/m³) | 130.90 | 8.60 |
| PM10(µg/m³) | 553.20 | 10.10 |
| NO₂(µg/m³) | 43.30 | 9.80 |
| SO₂(µg/m³) | 17.00 | 3.30 |
| O₃(µg/m³) | 43.00 | 29.00 |
| CO(µg/m³) | 906.00 | 163.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karnal averaged an AQI of 102 while Thrissur averaged 57 — a 45-point (79%) gap, with Karnal the more polluted and Thrissur the cleaner of the two. On 1090 days when both cities reported, Thrissur was cleaner on 801 of them; the average daily gap was 64 AQI points.
Seasonality & days
Karnal peaks in November, while Thrissur peaks in February. Karnal logged 0.1% Severe days and 46.2% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Karnal 53 days, Thrissur 52 days.
Year-over-year progress
Karnal has improved by 71 AQI points (41%) from 2019 to 2024; Thrissur has improved by 21 AQI points (26.9%) over the same window. The worst recorded day for Karnal reached AQI 456 at Sector-12 (HSPCB) on 2019-11-03; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Karnal spans 1 CPCB stations with a 0-point spread (min 128, max 128); 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 Karnal's 473. That's a significant difference of 459 points.