Ratlam vs Tiruchirappalli
Side-by-side air quality comparison between Ratlam 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 | Ratlam | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 31.00 | 6.00 |
| PM10(µg/m³) | 47.60 | 7.80 |
| NO₂(µg/m³) | 8.60 | 6.70 |
| SO₂(µg/m³) | 15.80 | 3.00 |
| O₃(µg/m³) | 55.00 | 40.00 |
| CO(µg/m³) | 205.00 | 131.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ratlam averaged an AQI of 113 while Tiruchirappalli averaged 50 — a 63-point (126%) gap, with Ratlam the more polluted and Tiruchirappalli the cleaner of the two. On 87 days when both cities reported, Tiruchirappalli was cleaner on 86 of them; the average daily gap was 84 AQI points.
Seasonality & days
Ratlam peaks in November, while Tiruchirappalli peaks in January. Ratlam logged 0% Severe days and 46.4% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Ratlam 59 days, Tiruchirappalli 46 days.
Year-over-year progress
Ratlam has improved by 19 AQI points (14.4%) from 2018 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Ratlam reached AQI 302 at Shasthri Nagar Ratlam (Lab) on 2020-11-11; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Ratlam spans 1 CPCB stations with a 0-point spread (min 103, max 103); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 10 compared to Ratlam's 53.