Asansol vs Tiruchirappalli
Side-by-side air quality comparison between Asansol 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Tiruchirappalli averaged 50 — a 95-point (190%) gap, with Asansol the more polluted and Tiruchirappalli the cleaner of the two. On 82 days when both cities reported, Tiruchirappalli was cleaner on 82 of them; the average daily gap was 185 AQI points.
Seasonality & days
Asansol peaks in December, while Tiruchirappalli peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Tiruchirappalli 46 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).