Asansol vs Kollam
Side-by-side air quality comparison between Asansol and Kollam.
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 Kollam averaged 84 — a 61-point (73%) gap, with Asansol the more polluted and Kollam the cleaner of the two. On 1034 days when both cities reported, Kollam was cleaner on 779 of them; the average daily gap was 72 AQI points.
Seasonality & days
Asansol peaks in December, while Kollam peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Kollam 65 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); Kollam spans 1 stations with a 0-point spread (min 84, max 84).