Hassan vs Tiruchirappalli
Side-by-side air quality comparison between Hassan 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 | Hassan | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 2.80 | 5.60 |
| PM10(µg/m³) | 4.30 | 6.40 |
| NO₂(µg/m³) | 3.60 | 6.80 |
| SO₂(µg/m³) | 0.70 | 3.40 |
| O₃(µg/m³) | 40.00 | 40.00 |
| CO(µg/m³) | 121.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hassan averaged an AQI of 60 while Tiruchirappalli averaged 50 — a 10-point (20%) gap, with Hassan the more polluted and Tiruchirappalli the cleaner of the two. On 57 days when both cities reported, Tiruchirappalli was cleaner on 43 of them; the average daily gap was 18 AQI points.
Seasonality & days
Hassan peaks in March, while Tiruchirappalli peaks in January. Hassan logged 0% Severe days and 92.5% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Hassan 51 days, Tiruchirappalli 46 days.
Year-over-year progress
Hassan has improved by 4 AQI points (6.2%) from 2021 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Hassan reached AQI 212 at BKatihalli (KSPCB) on 2024-05-11; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Hassan spans 1 CPCB stations with a 0-point spread (min 63, max 63); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Hassan has better air quality with an AQI of 5 compared to Tiruchirappalli's 9.