Kolār vs Tiruchirappalli
Side-by-side air quality comparison between Kolār 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 | Kolār | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 5.00 | 3.80 |
| PM10(µg/m³) | 8.80 | 4.70 |
| NO₂(µg/m³) | 1.40 | 1.00 |
| SO₂(µg/m³) | 1.80 | 1.70 |
| O₃(µg/m³) | 87.00 | 94.00 |
| CO(µg/m³) | 138.00 | 114.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolār averaged an AQI of 65 while Tiruchirappalli averaged 50 — a 15-point (30%) gap, with Kolār the more polluted and Tiruchirappalli the cleaner of the two. On 70 days when both cities reported, Tiruchirappalli was cleaner on 47 of them; the average daily gap was 22 AQI points.
Seasonality & days
Kolār peaks in September, while Tiruchirappalli peaks in January. Kolār logged 0.9% Severe days and 85.30000000000001% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Kolār 17 days, Tiruchirappalli 46 days.
Year-over-year progress
Kolār has improved by 56 AQI points (46.3%) from 2018 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Kolār reached AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Kolār spans 1 CPCB stations with a 0-point spread (min 71, max 71); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 6 compared to Kolār's 9.