Karnal vs Tiruchirappalli
Side-by-side air quality comparison between Karnal 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 | Karnal | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 110.80 | 5.40 |
| PM10(µg/m³) | 258.90 | 6.60 |
| NO₂(µg/m³) | 55.20 | 7.20 |
| SO₂(µg/m³) | 12.50 | 3.10 |
| O₃(µg/m³) | 10.00 | 38.00 |
| CO(µg/m³) | 1037.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karnal averaged an AQI of 102 while Tiruchirappalli averaged 50 — a 52-point (104%) gap, with Karnal the more polluted and Tiruchirappalli the cleaner of the two. On 79 days when both cities reported, Tiruchirappalli was cleaner on 79 of them; the average daily gap was 95 AQI points.
Seasonality & days
Karnal peaks in November, while Tiruchirappalli peaks in January. Karnal logged 0.1% Severe days and 46.2% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Karnal 53 days, Tiruchirappalli 46 days.
Year-over-year progress
Karnal has improved by 71 AQI points (41%) from 2019 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Karnal reached AQI 456 at Sector-12 (HSPCB) on 2019-11-03; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Karnal spans 1 CPCB stations with a 0-point spread (min 128, max 128); 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 Karnal's 270. That's a significant difference of 261 points.