Kollam vs Tālcher
Side-by-side air quality comparison between Kollam and Tālcher.
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, Kollam averaged an AQI of 84 while Tālcher averaged 127 — a 43-point (51%) gap, with Tālcher the more polluted and Kollam the cleaner of the two. On 947 days when both cities reported, Kollam was cleaner on 603 of them; the average daily gap was 46 AQI points.
Seasonality & days
Kollam peaks in January, while Tālcher peaks in December. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Tālcher was 0.2% Severe and 43.1% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Tālcher 44 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Tālcher has improved by 63 AQI points (33.2%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Tālcher hit AQI 414 at Talcher (OSPCB) on 2018-11-27.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Tālcher spans 1 stations with a 0-point spread (min 132, max 132).