Kollam vs Prayagraj
Side-by-side air quality comparison between Kollam and Prayagraj.
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 Prayagraj averaged 80 — a 4-point (5%) gap, with Kollam the more polluted and Prayagraj the cleaner of the two. On 800 days when both cities reported, Kollam was cleaner on 565 of them; the average daily gap was 56 AQI points.
Seasonality & days
Kollam peaks in January, while Prayagraj peaks in November. Kollam logged 0% Severe days and 81% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Kollam 65 days, Prayagraj 69 days.
Year-over-year progress
Kollam has improved by 2 AQI points (2.3%) from 2020 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Kollam reached AQI 272 at Polayathode Kollam (PCB) on 2024-04-06; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Kollam spans 1 CPCB stations with a 0-point spread (min 84, max 84); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).