Kollam vs Rourkela
Side-by-side air quality comparison between Kollam and Rourkela.
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 Rourkela averaged 115 — a 31-point (37%) gap, with Rourkela the more polluted and Kollam the cleaner of the two. On 301 days when both cities reported, Kollam was cleaner on 254 of them; the average daily gap was 72 AQI points.
Seasonality & days
Kollam peaks in January, while Rourkela peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Rourkela was 0% Severe and 32.9% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Rourkela 60 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Rourkela has improved by 112 AQI points (49.3%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Rourkela hit AQI 344 at Raghunathpali (OSPCB) on 2024-01-01.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Rourkela spans 3 stations with a 29-point spread (min 106, max 135).