Kalyān vs Tiruchirappalli
Side-by-side air quality comparison between Kalyān 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 | Kalyān | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 22.10 | 5.40 |
| PM10(µg/m³) | 40.40 | 6.60 |
| NO₂(µg/m³) | 23.10 | 7.20 |
| SO₂(µg/m³) | 21.70 | 3.10 |
| O₃(µg/m³) | 19.00 | 38.00 |
| CO(µg/m³) | 174.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kalyān averaged an AQI of 95 while Tiruchirappalli averaged 50 — a 45-point (90%) gap, with Kalyān the more polluted and Tiruchirappalli the cleaner of the two. On 81 days when both cities reported, Tiruchirappalli was cleaner on 80 of them; the average daily gap was 71 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kalyān logged 0.1% Severe days and 46.4% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Kalyān 78 days, Tiruchirappalli 46 days.
Year-over-year progress
Kalyān has improved by 4 AQI points (4%) from 2019 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Kalyān reached AQI 414 at Khadakpada (MPCB) on 2022-01-24; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Kalyān spans 2 CPCB stations with a 18-point spread (min 98, max 116); 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 Kalyān's 40.